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Wan H, Wang K, Luo X, Zhang C, Deng K, Lin S, Xie J, Luo Q, Lei X, Ding L. Algal-mediated nitrogen removal and sustainability of algal-derived dissolved organic matter supporting denitrification. BIORESOURCE TECHNOLOGY 2024; 407:131083. [PMID: 38972430 DOI: 10.1016/j.biortech.2024.131083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 07/04/2024] [Accepted: 07/04/2024] [Indexed: 07/09/2024]
Abstract
Algae-mediated nitrogen removal from low carbon vs. nitrogen (C/N) wastewater techniques has garnered significant attention due to its superior autotrophic assimilation properties. This study investigated the ammonium-N removal potential of four algae species from low C/N synthetic wastewater. Results showed that 95 % and 99 % of ammonium-N are eliminated at initial concentrations of 11.05 ± 0.98 mg/L and 42.51 ± 2.20 mg/L with little nitrate and nitrite accumulation. The compositions of secreted algal-derived dissolved organic matter varied as C/N decreased and showed better bioavailability for nitrate-N removal by Pseudomonas sp. SZF15 without pre-oxidation, achieving an efficiency of 99 %. High-throughput sequencing revealed that the aquatic microbial communities, dominated by Scenedesmus, Kalenjinia, and Micractinium, remain relatively stable across different C/N, aligning with the underlying metabolic pathways. These findings may provide valuable insights into the sustainable elimination of multiple nitrogen contaminants from low C/N wastewater.
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Affiliation(s)
- Huiqin Wan
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Kangpeng Wang
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Xianxin Luo
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
| | - Chao Zhang
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Kai Deng
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Shusen Lin
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Jingming Xie
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Qi Luo
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Xu Lei
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Lin Ding
- College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China
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2
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Gao S, Wang H, Yuan S. Theory of Stoichiometric Intraguild Predation: Algae, Ciliate, and Daphnia. Bull Math Biol 2024; 86:79. [PMID: 38777905 DOI: 10.1007/s11538-024-01306-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 04/30/2024] [Indexed: 05/25/2024]
Abstract
Consumers respond differently to external nutrient changes than producers, resulting in a mismatch in elemental composition between them and potentially having a significant impact on their interactions. To explore the responses of herbivores and omnivores to changes in elemental composition in producers, we develop a novel stoichiometric model with an intraguild predation structure. The model is validated using experimental data, and the results show that our model can well capture the growth dynamics of these three species. Theoretical and numerical analyses reveal that the model exhibits complex dynamics, including chaotic-like oscillations and multiple types of bifurcations, and undergoes long transients and regime shifts. Under moderate light intensity and phosphate concentration, these three species can coexist. However, when the light intensity is high or the phosphate concentration is low, the energy enrichment paradox occurs, leading to the extinction of ciliate and Daphnia. Furthermore, if phosphate is sufficient, the competitive effect of ciliate and Daphnia on algae will be dominant, leading to competitive exclusion. Notably, when the phosphorus-to-carbon ratio of ciliate is in a suitable range, the energy enrichment paradox can be avoided, thus promoting the coexistence of species. These findings contribute to a deeper understanding of species coexistence and biodiversity.
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Affiliation(s)
- Shufei Gao
- College of Science, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Hao Wang
- Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, Alberta, T6G 2G1, Canada
| | - Sanling Yuan
- College of Science, University of Shanghai for Science and Technology, Shanghai, 200093, China.
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3
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Ahme A, Happe A, Striebel M, Cabrerizo MJ, Olsson M, Giesler J, Schulte-Hillen R, Sentimenti A, Kühne N, John U. Warming increases the compositional and functional variability of a temperate protist community. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171971. [PMID: 38547992 DOI: 10.1016/j.scitotenv.2024.171971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/22/2024] [Accepted: 03/23/2024] [Indexed: 04/06/2024]
Abstract
Phototrophic protists are a fundamental component of the world's oceans by serving as the primary source of energy, oxygen, and organic nutrients for the entire ecosystem. Due to the high thermal seasonality of their habitat, temperate protists could harbour many well-adapted species that tolerate ocean warming. However, these species may not sustain ecosystem functions equally well. To address these uncertainties, we conducted a 30-day mesocosm experiment to investigate how moderate (12 °C) and substantial (18 °C) warming compared to ambient conditions (6 °C) affect the composition (18S rRNA metabarcoding) and ecosystem functions (biomass, gross oxygen productivity, nutritional quality - C:N and C:P ratio) of a North Sea spring bloom community. Our results revealed warming-driven shifts in dominant protist groups, with haptophytes thriving at 12 °C and diatoms at 18 °C. Species responses primarily depended on the species' thermal traits, with indirect temperature effects on grazing being less relevant and phosphorus acting as a critical modulator. The species Phaeocystis globosa showed highest biomass on low phosphate concentrations and relatively increased in some replicates of both warming treatments. In line with this, the C:P ratio varied more with the presence of P. globosa than with temperature. Examining further ecosystem responses under warming, our study revealed lowered gross oxygen productivity but increased biomass accumulation whereas the C:N ratio remained unaltered. Although North Sea species exhibited resilience to elevated temperatures, a diminished functional similarity and heightened compositional variability indicate potential ecosystem repercussions for higher trophic levels. In conclusion, our research stresses the multifaceted nature of temperature effects on protist communities, emphasising the need for a holistic understanding that encompasses trait-based responses, indirect effects, and functional dynamics in the face of exacerbating temperature changes.
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Affiliation(s)
- Antonia Ahme
- Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany.
| | - Anika Happe
- Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Schleusenstraße 1, 26382 Wilhelmshaven, Germany
| | - Maren Striebel
- Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Schleusenstraße 1, 26382 Wilhelmshaven, Germany
| | - Marco J Cabrerizo
- Department of Ecology, University of Granada, Campus Fuentenueva s/n 1, 18071 Granada, Spain; Department of Ecology and Animal Biology, University of Vigo, Campus Lagoas Marcosende s/n, 36310 Vigo, Spain
| | - Markus Olsson
- Department of Ecology, Environment and Plant Sciences, Stockholm University, Svante Arrhenius väg 20A, 106 91 Stockholm, Sweden
| | - Jakob Giesler
- Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Ruben Schulte-Hillen
- Albert-Ludwigs-Universität Freiburg, Fahnenbergplatz, 79104 Freiburg i.Br., Germany
| | - Alexander Sentimenti
- Albert-Ludwigs-Universität Freiburg, Fahnenbergplatz, 79104 Freiburg i.Br., Germany
| | - Nancy Kühne
- Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
| | - Uwe John
- Alfred-Wegener-Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany; Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg, Ammerländer Heersstraße 231, 26129 Oldenburg, Germany
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4
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Amelot M, Robert M, Mouchet M, Kopp D. Gadiform species display dietary shifts in the Celtic Sea. MARINE ENVIRONMENTAL RESEARCH 2023; 192:106224. [PMID: 37871469 DOI: 10.1016/j.marenvres.2023.106224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/25/2023]
Abstract
Global changes, through their impacts on ecosystem trophic structures, are behind regime shifts and cascading effects, and could result in the reorganization of whole ecosystems. The Celtic Sea is a temperate sea at risk of the above because of the interplay between climate change and fisheries. This sea has only displayed slight changes in species diversity between the late 20th century and the present day. However, this apparent stability in species diversity could be hiding structural transformations, including the rearrangement of trophic relationships. Historical stomach content database offers the opportunity to investigate changes in ecosystem trophic structure. Based on such database, this study explored shifts in the feeding habits of gadiform species in the Celtic Sea in the 1980s, 1990s, and 2010s. To this end, it examined dietary generalism and composition for four top predator fish species. During the target period, generalists maintained their diets, while specialists adopted more generalist diets. There were also decreases in frequencies of occurrence of certain fishes within the diets of gadiform species. These recent changes in trophic structure organization have likely been caused by the influence of global changes on both top-down and bottom-up processes that occurred in the Celtic Sea.
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Affiliation(s)
- Morgane Amelot
- Centre d'Ecologie et des Sciences de la Conservation, UMR 7204 MNHN-CNRS-Sorbonne Université, Muséum National d'Histoire Naturelle de Paris, Paris, France.
| | - Marianne Robert
- DECOD (Ecosystem Dynamics and Sustainability), IFREMER, Institut Agro, INRAE, Lorient, France
| | - Maud Mouchet
- Centre d'Ecologie et des Sciences de la Conservation, UMR 7204 MNHN-CNRS-Sorbonne Université, Muséum National d'Histoire Naturelle de Paris, Paris, France
| | - Dorothée Kopp
- DECOD (Ecosystem Dynamics and Sustainability), IFREMER, Institut Agro, INRAE, Lorient, France
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5
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Beck M, Billoir E, Floury M, Usseglio-Polatera P, Danger M. A 34-year survey under phosphorus decline and warming: Consequences on stoichiometry and functional trait composition of freshwater macroinvertebrate communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159786. [PMID: 36377090 DOI: 10.1016/j.scitotenv.2022.159786] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 10/24/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Worldwide, freshwater systems are subjected to increasing temperatures and nutrient changes. Under phosphorus and nitrogen enrichment consumer communities are often thought to shift towards fast-growing and P-rich taxa, supporting the well-known link between growth rate and body stoichiometry. While these traits are also favoured under warming, the temperature effect on stoichiometry is less clear. As recently shown, there is a general link between functional traits and body stoichiometry, which makes the integration of stoichiometric traits a promising tool to help understanding the mechanisms behind taxonomic and functional community responses to nutrient changes and/or warming. Yet, such approaches have been scarcely developed at community level and on a long-term perspective. In this study, we investigated long-term responses in stoichiometry and functional trait composition of macroinvertebrate communities to nutrient changes (decreasing water P; increasing water N:P) and warming over a 34-year period in the Middle Loire River (France), testing the potentially opposing responses to these drivers. Both drivers should cause shifts in species composition, which will alter the overall community stoichiometry and functional composition following assumptions from ecological stoichiometry theory. We found that the macroinvertebrate community shifted towards P-poor taxa, causing significant trends in overall community stoichiometry which indicates long-term changes in the nutrient pool provided by these consumers (i.e. decrease in %N and %P, increase in N:P). Further, while the former high-P conditions favoured traits associated to detritus feeding and fast development (i.e. small maximum body size, short life duration), recent conditions favoured predators and slow-developing taxa. These results suggest nutrients to be a more important driver than temperature over this period. By providing a pivotal link between environmental changes and functional trait composition of communities, approaches based on stoichiometric traits offer sound perspectives to investigate ecological relationships between multiple drivers operating at various scales and ecosystem functioning.
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Affiliation(s)
| | | | - Mathieu Floury
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F- 69622, Villeurbanne, France
| | | | - Michael Danger
- LIEC, Université de Lorraine, France; Institut Universitaire de France, Paris, France
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6
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Chang M, DeAngelis DL, Janse JH, Janssen AB, Troost TA, van Wijk D, Mooij WM, Teurlincx S. A generically parameterized model of Lake eutrophication: The impact of Stoichiometric ratios and constraints on the abundance of natural phytoplankton communities (GPLake-S). Ecol Modell 2022. [DOI: 10.1016/j.ecolmodel.2022.110142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Dashkova V, Malashenkov DV, Baishulakova A, Davidson TA, Vorobjev IA, Jeppesen E, Barteneva NS. Changes in Phytoplankton Community Composition and Phytoplankton Cell Size in Response to Nitrogen Availability Depend on Temperature. Microorganisms 2022; 10:microorganisms10071322. [PMID: 35889045 PMCID: PMC9324377 DOI: 10.3390/microorganisms10071322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/02/2022] [Accepted: 06/15/2022] [Indexed: 02/01/2023] Open
Abstract
The climate-driven changes in temperature, in combination with high inputs of nutrients through anthropogenic activities, significantly affect phytoplankton communities in shallow lakes. This study aimed to assess the effect of nutrients on the community composition, size distribution, and diversity of phytoplankton at three contrasting temperature regimes in phosphorus (P)–enriched mesocosms and with different nitrogen (N) availability imitating eutrophic environments. We applied imaging flow cytometry (IFC) to evaluate complex phytoplankton communities changes, particularly size of planktonic cells, biomass, and phytoplankton composition. We found that N enrichment led to the shift in the dominance from the bloom-forming cyanobacteria to the mixed-type blooming by cyanobacteria and green algae. Moreover, the N enrichment stimulated phytoplankton size increase in the high-temperature regime and led to phytoplankton size decrease in lower temperatures. A combination of high temperature and N enrichment resulted in the lowest phytoplankton diversity. Together these findings demonstrate that the net effect of N and P pollution on phytoplankton communities depends on the temperature conditions. These implications are important for forecasting future climate change impacts on the world’s shallow lake ecosystems.
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Affiliation(s)
- Veronika Dashkova
- School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 00010, Kazakhstan
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
- Correspondence: (V.D.); (N.S.B.)
| | - Dmitry V. Malashenkov
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
- National Laboratory Astana, Nur-Sultan 00010, Kazakhstan
| | - Assel Baishulakova
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
| | - Thomas A. Davidson
- Department of Ecoscience, Aarhus University Center for Water Technology (WATEC), 8000 Aarhus, Denmark; (T.A.D.); (E.J.)
| | - Ivan A. Vorobjev
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
| | - Erik Jeppesen
- Department of Ecoscience, Aarhus University Center for Water Technology (WATEC), 8000 Aarhus, Denmark; (T.A.D.); (E.J.)
- Sino-Danish Centre for Education and Research, Beijing 100049, China
- Limnology Laboratory, Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, Ankara 06800, Turkey
- Institute of Marine Sciences, Middle East Technical University, Erdemli-Mersin 33731, Turkey
| | - Natasha S. Barteneva
- School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 00010, Kazakhstan; (D.V.M.); (A.B.); (I.A.V.)
- The Environment & Resource Efficiency Cluster, Nazarbayev University, Nur-Sultan 00010, Kazakhstan
- Correspondence: (V.D.); (N.S.B.)
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8
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Ren Z, Zhang Y, Li X, Zhang C. Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.901107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Thermokarst lakes are formed following ice-rich permafrost thaw and widely distribute in the cold regions with high latitude and elevation. However, the micro-eukaryotic communities (MECs) in thermokarst lakes are not well studied. Employing 18S rRNA gene sequencing, we assessed the biogeography of MECs and their driving factors in sediments of thermokarst lakes across the Qinghai-Tibet Plateau (QTP). Results showed that Diatom, Gastrotricha, Nematozoa, Ciliophora, and Cercozoa were dominant lineages in relative abundance and OTU richness. MECs varied substantially across the lakes in terms of diversity and composition. Structural equation modeling and mantel test showed that both OTU richness and community structure of MECs had close relationships with spatial factors, climatic factors, and sediment properties, particularly with latitude, mean annual precipitation, pH, as well as nutrient concentrations and stoichiometric ratios. Moreover, different groups of microbial eukaryotes (taxonomic groups and co-occurrence modules) responded differentially to the measured environmental variables. The results suggested that the biogeography of sediment MECs of thermokarst lakes on the QTP were jointly controlled by spatial and climatic factors as well as sediment properties. This study provides the first view of the composition, diversity, and underlying drivers of MECs dynamic in surface sediments of thermokarst lakes across the QTP.
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Dai M, Wang T, Wang Y, Xu J. Effects of Warming and Phosphorus Enrichment on the C:N:P Stoichiometry of Potamogeton crispus Organs. FRONTIERS IN PLANT SCIENCE 2022; 13:814255. [PMID: 35422837 PMCID: PMC9002266 DOI: 10.3389/fpls.2022.814255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
The loss of submerged macrophytes from freshwater ecosystems is accelerating owing to the combined effects of eutrophication and climate change. Submerged macrophytes depend on spring clear water; however, increased water temperatures and excessive phosphorus (P) inputs often lead to the dominance of phytoplankton. It is still not clear how the stoichiometric characteristics of carbon (C), nitrogen (N), and P in different tissues of submerged macrophytes respond to P enrichment and temperature increases. In this study, we established 36 mesocosm ecosystems to explore the effects of warming and P addition on the leaf, turion, stem, and seed stoichiometry of Potamogeton crispus. The results revealed that different functional plant organs show distinct responses to P addition and warming, which demonstrates the importance of evaluating the responses of different submerged macrophyte organs to environmental changes. In addition, interactive effects between P addition and warming were observed in the leaf, turion, and seed C:N:P stoichiometry, which highlights the importance of multifactorial studies. Our data showed that warming caused a decrease in the C content in most organs, with the exception of the stem; P addition increased the P content in most organs, with the exception of seed; N content in the turion and seed were influenced by interactive effects. Collectively, P addition could help P. crispus to resist the adverse effects of high temperatures by aiding growth and asexual reproduction, and asexual propagules were found to be more sensitive to P enrichment than sexual propagules.
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Affiliation(s)
- Mingzhe Dai
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Tao Wang
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yuyu Wang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Jun Xu
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
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10
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Schulhof MA, Van de Waal DB, Declerck SAJ, Shurin JB. Phytoplankton functional composition determines limitation by nutrients and grazers across a lake productivity gradient. Ecosphere 2022. [DOI: 10.1002/ecs2.4008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Marika A. Schulhof
- Division of Biological Sciences Section of Ecology, Behavior & Evolution, University of California San Diego La Jolla California USA
- Department of Aquatic Ecology Netherlands Institute of Ecology (NIOO‐KNAW) Wageningen The Netherlands
| | - Dedmer B. Van de Waal
- Department of Aquatic Ecology Netherlands Institute of Ecology (NIOO‐KNAW) Wageningen The Netherlands
| | - Steven A. J. Declerck
- Department of Aquatic Ecology Netherlands Institute of Ecology (NIOO‐KNAW) Wageningen The Netherlands
- Laboratory of Aquatic Ecology Evolution and Conservation, KU Leuven Leuven Belgium
| | - Jonathan B. Shurin
- Division of Biological Sciences Section of Ecology, Behavior & Evolution, University of California San Diego La Jolla California USA
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11
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Diehl S, Berger SA, Uszko W, Stibor H. Stoichiometric mismatch causes a warming‐induced regime shift in experimental plankton communities. Ecology 2022; 103:e3674. [PMID: 35253210 PMCID: PMC9285514 DOI: 10.1002/ecy.3674] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 08/26/2021] [Accepted: 09/16/2021] [Indexed: 11/28/2022]
Abstract
In many ecosystems, consumers respond to warming differently than their resources, sometimes leading to temporal mismatches between seasonal maxima in consumer demand and resource availability. A potentially equally pervasive, but less acknowledged threat to the temporal coherence of consumer‐resource interactions is mismatch in food quality. Many plant and algal communities respond to warming with shifts toward more carbon‐rich species and growth forms, thereby diluting essential elements in their biomass and intensifying the stoichiometric mismatch with herbivore nutrient requirements. Here we report on a mesocosm experiment on the spring succession of an assembled plankton community in which we manipulated temperature (ambient vs. +3.6°C) and presence versus absence of two types of grazers (ciliates and Daphnia), and where warming caused a dramatic regime shift that coincided with extreme stoichiometric mismatch. At ambient temperatures, a typical spring succession developed, where a moderate bloom of nutritionally adequate phytoplankton was grazed down to a clear‐water phase by a developing Daphnia population. While warming accelerated initial Daphnia population growth, it speeded up algal growth rates even more, triggering a massive phytoplankton bloom of poor food quality. Consistent with the predictions of a stoichiometric producer–grazer model, accelerated phytoplankton growth promoted the emergence of an alternative system attractor, where the extremely low phosphorus content of the abundant algal food eventually drove Daphnia to extinction. Where present, ciliates slowed down the phytoplankton bloom and the deterioration of its nutritional value, but this only delayed the regime shift. Eventually, phytoplankton also grew out of grazer control in the presence of ciliates, and the Daphnia population crashed. To our knowledge, the experiment is the first empirical demonstration of the “paradox of energy enrichment” (grazer starvation in an abundance of energy‐rich but nutritionally imbalanced food) in a multispecies phytoplankton community. More generally, our results support the notion that warming can exacerbate the stoichiometric mismatch at the plant–herbivore interface and limit energy transfer to higher trophic levels.
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Affiliation(s)
- Sebastian Diehl
- Integrated Science Lab, Department of Ecology and Environmental Science Umeå University Umeå Sweden
- Department Biologie II, Ludwig‐Maximilians‐Universität München, Grosshaderner Str. 2, D‐82152 Planegg Martinsried Germany
| | - Stella A. Berger
- Department Biologie II, Ludwig‐Maximilians‐Universität München, Grosshaderner Str. 2, D‐82152 Planegg Martinsried Germany
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Department of Experimental Limnology, Zur alten Fischerhütte 2, 16775 Stechlin Germany
| | - Wojciech Uszko
- Integrated Science Lab, Department of Ecology and Environmental Science Umeå University Umeå Sweden
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Department of Experimental Limnology, Zur alten Fischerhütte 2, 16775 Stechlin Germany
| | - Herwig Stibor
- Department Biologie II, Ludwig‐Maximilians‐Universität München, Grosshaderner Str. 2, D‐82152 Planegg Martinsried Germany
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12
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Krama T, Krams R, Munkevics M, Willow J, Popovs S, Elferts D, Dobkeviča L, Raibarte P, Rantala M, Contreras-Garduño J, Krams IA. Physiological stress and higher reproductive success in bumblebees are both associated with intensive agriculture. PeerJ 2022; 10:e12953. [PMID: 35256917 PMCID: PMC8898004 DOI: 10.7717/peerj.12953] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 01/26/2022] [Indexed: 01/11/2023] Open
Abstract
Free-living organisms face multiple stressors in their habitats, and habitat quality often affects development and life history traits. Increasing pressures of agricultural intensification have been shown to influence diversity and abundance of insect pollinators, and it may affect their elemental composition as well. We compared reproductive success, body concentration of carbon (C) and nitrogen (N), and C/N ratio, each considered as indicators of stress, in the buff-tailed bumblebee (Bombus terrestris). Bumblebee hives were placed in oilseed rape fields and semi-natural old apple orchards. Flowering season in oilseed rape fields was longer than that in apple orchards. Reproductive output was significantly higher in oilseed rape fields than in apple orchards, while the C/N ratio of queens and workers, an indicator of physiological stress, was lower in apple orchards, where bumblebees had significantly higher body N concentration. We concluded that a more productive habitat, oilseed rape fields, offers bumblebees more opportunities to increase their fitness than a more natural habitat, old apple orchards, which was achieved at the expense of physiological stress, evidenced as a significantly higher C/N ratio observed in bumblebees inhabiting oilseed rape fields.
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Affiliation(s)
| | - Ronalds Krams
- Daugavpils University, Daugavpils, Latvia,Estonian University of Life Sciences, Tartu, Estonia
| | | | | | | | | | | | | | | | | | - Indrikis A. Krams
- Daugavpils University, Daugavpils, Latvia,University of Latvia, Riga, Latvia,University of Tartu, Tartu, Estonia
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13
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Lewis WM, Roberson J. Phytoplankton growth regulation by dissolved P and mortality regulation by endogenous cell death over 35 years of P control in a Mountain Lake. JOURNAL OF PLANKTON RESEARCH 2022; 44:3-21. [PMID: 35095343 PMCID: PMC8790835 DOI: 10.1093/plankt/fbab084] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 10/27/2021] [Indexed: 06/14/2023]
Abstract
Dynamics of phytoplankton and phosphorus were quantified in Lake Dillon, Colorado, over 35 years of P control. The lake provides an example of early intervention for P enrichment rather than remediation of advanced eutrophication. Phosphorus control began with tertiary treatment of effluent, which caused a phytoplankton decline (8.1-4.5 μg L-1 chla); a second decline (4.6-2.5 μg L-1 chla) occurred later following replacement of failing septic systems. Results showed that bioavailable phosphorus (BAP) loading was the only significant correlate of phytoplankton biomass; total P loading was not significantly related to biomass measured as chlorophyll. Phytoplankton composition changed greatly over the study interval, even though there was no long-term trend in potential causes of phytoplankton abundance other than reduction in BAP. Gradual decline of BAP loading also appears to have been the cause of large, gradual changes in phytoplankton community composition. Factors typically assumed to control phytoplankton mortality accounted for only ~50% of phytoplankton biomass turnover; the balance of mortality appears to be accounted for by endogenous cell mortality.
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14
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Krams R, Munkevics M, Popovs S, Dobkeviča L, Willow J, Contreras Garduño J, Krama T, Krams IA. Ecological Stoichiometry of Bumblebee Castes, Sexes, and Age Groups. Front Physiol 2021; 12:696689. [PMID: 34721052 PMCID: PMC8548625 DOI: 10.3389/fphys.2021.696689] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 09/22/2021] [Indexed: 11/13/2022] Open
Abstract
Ecological stoichiometry is important for revealing how the composition of chemical elements of organisms is influenced by their physiological functions and ecology. In this study, we investigated the elemental body composition of queens, workers, and males of the bumblebee Bombus terrestris, an important pollinator throughout Eurasia, North America, and northern Africa. Our results showed that body elemental content differs among B. terrestris castes. Young queens and workers had higher body nitrogen concentration than ovipositing queens and males, while castes did not differ significantly in their body carbon concentration. Furthermore, the carbon-to-nitrogen ratio was higher in ovipositing queens and males. We suggest that high body nitrogen concentration and low carbon-to-nitrogen ratio in young queens and workers may be related to their greater amount of flight muscles and flight activities than to their lower stress levels. To disentangle possible effects of stress in the agricultural landscape, further studies are needed to compare the elemental content of bumblebee bodies between natural habitats and areas of high-intensity agriculture.
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Affiliation(s)
- Ronalds Krams
- Chair of Plant Health, Estonian University of Life Sciences, Tartu, Estonia.,Department of Biotechnology, Daugavpils University, Daugavpils, Latvia
| | - Māris Munkevics
- Department of Biotechnology, Daugavpils University, Daugavpils, Latvia.,Department of Zoology and Animal Ecology, Faculty of Biology, University of Latvia, Riga, Latvia
| | - Sergejs Popovs
- Department of Biotechnology, Daugavpils University, Daugavpils, Latvia
| | - Linda Dobkeviča
- Department of Environmental Science, Faculty of Geography and Earth Sciences, University of Latvia, Riga, Latvia
| | - Jonathan Willow
- Chair of Plant Health, Estonian University of Life Sciences, Tartu, Estonia
| | - Jorge Contreras Garduño
- Escuela Nacional de Estudios Superiores Unidad Morelia, Universidad Nacional Autónoma de México, Morelia, Mexico
| | - Tatjana Krama
- Chair of Plant Health, Estonian University of Life Sciences, Tartu, Estonia.,Department of Biotechnology, Daugavpils University, Daugavpils, Latvia
| | - Indrikis A Krams
- Department of Biotechnology, Daugavpils University, Daugavpils, Latvia.,Department of Zoology and Animal Ecology, Faculty of Biology, University of Latvia, Riga, Latvia.,Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
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15
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Coyne KJ, Salvitti LR, Mangum AM, Ozbay G, Main CR, Kouhanestani ZM, Warner ME. Interactive effects of light, CO2 and temperature on growth and resource partitioning by the mixotrophic dinoflagellate, Karlodinium veneficum. PLoS One 2021; 16:e0259161. [PMID: 34705875 PMCID: PMC8550395 DOI: 10.1371/journal.pone.0259161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 10/14/2021] [Indexed: 11/25/2022] Open
Abstract
There is little information on the impacts of climate change on resource partitioning for mixotrophic phytoplankton. Here, we investigated the hypothesis that light interacts with temperature and CO2 to affect changes in growth and cellular carbon and nitrogen content of the mixotrophic dinoflagellate, Karlodinium veneficum, with increasing cellular carbon and nitrogen content under low light conditions and increased growth under high light conditions. Using a multifactorial design, the interactive effects of light, temperature and CO2 were investigated on K. veneficum at ambient temperature and CO2 levels (25°C, 375 ppm), high temperature (30°C, 375 ppm CO2), high CO2 (30°C, 750 ppm CO2), or a combination of both high temperature and CO2 (30°C, 750 ppm CO2) at low light intensities (LL: 70 μmol photons m-2 s-2) and light-saturated conditions (HL: 140 μmol photons m-2 s-2). Results revealed significant interactions between light and temperature for all parameters. Growth rates were not significantly different among LL treatments, but increased significantly with temperature or a combination of elevated temperature and CO2 under HL compared to ambient conditions. Particulate carbon and nitrogen content increased in response to temperature or a combination of elevated temperature and CO2 under LL conditions, but significantly decreased in HL cultures exposed to elevated temperature and/or CO2 compared to ambient conditions at HL. Significant increases in C:N ratios were observed only in the combined treatment under LL, suggesting a synergistic effect of temperature and CO2 on carbon assimilation, while increases in C:N under HL were driven only by an increase in CO2. Results indicate light-driven variations in growth and nutrient acquisition strategies for K. veneficum that may benefit this species under anticipated climate change conditions (elevated light, temperature and pCO2) while also affecting trophic transfer efficiency during blooms of this species.
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Affiliation(s)
- Kathryn J. Coyne
- College of Earth, Ocean, and Environment, University of Delaware, Lewes, Delaware, United States of America
- * E-mail:
| | - Lauren R. Salvitti
- College of Earth, Ocean, and Environment, University of Delaware, Lewes, Delaware, United States of America
| | - Alicia M. Mangum
- Department of Agriculture and Natural Resources, Delaware State University, Dover, Delaware, United States of America
| | - Gulnihal Ozbay
- Department of Agriculture and Natural Resources, Delaware State University, Dover, Delaware, United States of America
| | - Christopher R. Main
- College of Earth, Ocean, and Environment, University of Delaware, Lewes, Delaware, United States of America
- Department of Natural Resources and Environmental Control, Dover, Delaware, United States of America
| | - Zohreh M. Kouhanestani
- Department of Agriculture and Natural Resources, Delaware State University, Dover, Delaware, United States of America
- Department of Fisheries and Environmental Sciences, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Golestan, Iran
| | - Mark E. Warner
- College of Earth, Ocean, and Environment, University of Delaware, Lewes, Delaware, United States of America
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16
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Wu H, Hao B, Jo H, Cai Y. Seasonality and Species Specificity of Submerged Macrophyte Biomass in Shallow Lakes Under the Influence of Climate Warming and Eutrophication. FRONTIERS IN PLANT SCIENCE 2021; 12:678259. [PMID: 34659276 PMCID: PMC8517270 DOI: 10.3389/fpls.2021.678259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
Climate warming and eutrophication caused by anthropogenic activities strongly affect aquatic ecosystems. Submerged macrophytes usually play a key role in shallow lakes and can maintain a stable clear state. It is extremely important to study the effects of climate warming and eutrophication on the growth of submerged macrophytes in shallow lakes. However, the responses of submerged macrophytes to climate warming and eutrophication are still controversial. Additionally, the understanding of the main pathways impacting submerged macrophytes remains to be clarified. In addition, the influence of seasonality on the growth responses of submerged macrophytes to climate warming and eutrophication requires further elucidation. In this study, we conducted a series of mesocosm experiments with four replicates across four seasons to study the effects of rising temperature and nutrient enrichment on the biomass of two submerged macrophytes, Potamogeton crispus and Elodea canadensis. Our results demonstrated the seasonality and species specificity of plant biomass under the influence of climate warming and eutrophication, as well as the main explanatory factors in each season. Consistent with the seasonal results, the overall results showed that E. canadensis biomass was directly increased by rising temperature rather than by nutrient enrichment. Conversely, the overall results showed that P. crispus biomass was indirectly reduced by phosphorus enrichment via the strengthening of competition among primary producers. Distinct physiological and morphological traits may induce species-specific responses of submerged macrophytes to climate warming and eutrophication, indicating that further research should take interspecies differences into account.
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Affiliation(s)
- Haoping Wu
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- Department of Bioscience, Aarhus University, Silkeborg, Denmark
| | - Beibei Hao
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- Department of Bioscience, Aarhus University, Silkeborg, Denmark
| | - Hyunbin Jo
- Department of Bioscience, Aarhus University, Silkeborg, Denmark
- Institute for Environment and Energy, Pusan National University, Busan, South Korea
| | - Yanpeng Cai
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
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17
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Fey SB, Kremer CT, Layden TJ, Vasseur DA. Resolving the consequences of gradual phenotypic plasticity for populations in variable environments. ECOL MONOGR 2021. [DOI: 10.1002/ecm.1478] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Samuel B. Fey
- Department of Biology Reed College Portland Oregon 97202 USA
| | - Colin T. Kremer
- W.K. Kellogg Biological Station Michigan State University Hickory Corners Michigan 49060 USA
- Department of Ecology and Evolutionary Biology University of California Los Angeles Los Angeles California 90096 USA
| | | | - David A. Vasseur
- Department of Ecology and Evolutionary Biology Yale University 165 Prospect Street New Haven Connecticut 06520 USA
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18
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Simulating Nutrients and Phytoplankton Dynamics in Lakes: Model Development and Applications. WATER 2021. [DOI: 10.3390/w13152088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Due to eutrophication, many lakes require periodic management and restoration, which becomes unpredictable due to internal nutrient loading. To provide better lake management and restoration strategies, a deterministic, one-dimensional water quality model MINLAKE2020 was modified from daily MINLAKE2012 by incorporating chlorophyll-a, nutrients, and biochemical oxygen demand models into the regional year-around temperature and dissolved oxygen (DO) model. MINLAKE2020 was applied to six lakes (varying depth and trophic status) in Minnesota focusing on studying the internal nutrient dynamics. The average root-mean-square errors (RMSEs) of simulated water temperature and DO in six lakes are 1.51 °C and 2.33 mg/L, respectively, when compared with profile data over 2–4 years. The average RMSE of DO simulation decreased by 24.2% when compared to the MINLAKE2012 model. The internal nutrient dynamics was studied by analyzing time series of phosphorus, chlorophyll-a, and DO over several years and by performing a sensitivity analysis of model parameters. A long-term simulation (20 years) of Lake Elmo shows that the simulated phosphorus release from sediment under the anoxic condition results in surface phosphorus increase, which matches with the observed trends. An average internal phosphorus loading increase of 92.3 kg/year increased the average daily phosphorus concentration by 0.0087 mg/L.
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19
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Cabrerizo MJ, Marañón E. Geographical and Seasonal Thermal Sensitivity of Grazing Pressure by Microzooplankton in Contrasting Marine Ecosystems. Front Microbiol 2021; 12:679863. [PMID: 34290682 PMCID: PMC8287633 DOI: 10.3389/fmicb.2021.679863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/03/2021] [Indexed: 11/18/2022] Open
Abstract
Grazing pressure, estimated as the ratio between microzooplankton grazing and phytoplankton growth rates (g:μ), is a strong determinant of microbial food-web structure and element cycling in the upper ocean. It is generally accepted that g is more sensitive to temperature than μ, but it remains unknown how the thermal dependence (activation energy, Ea) of g:μ varies over spatial and temporal scales. To tackle this uncertainty, we used an extensive literature analysis obtaining 751 paired rate estimates of μ and g from dilution experiments performed throughout the world’s marine environments. On a geographical scale, we found a stimulatory effect of temperature in polar open-ocean (∼0.5 eV) and tropical coastal (∼0.2 eV) regions, and an inhibitory one in the remaining biomes (values between −0.1 and −0.4 eV). On a seasonal scale, the temperature effect on g:μ ratios was stimulatory, particularly in polar environments; however, the large variability existing between estimates resulted in non-significant differences among biomes. We observed that increases in nitrate availability stimulated the temperature dependence of grazing pressure (i.e., led to more positive Ea of g:μ) in open-ocean ecosystems and inhibited it in coastal ones, particularly in polar environments. The percentage of primary production grazed by microzooplankton (∼56%) was similar in all regions. Our results suggest that warming of surface ocean waters could exert a highly variable impact, in terms of both magnitude and direction (stimulation or inhibition), on microzooplankton grazing pressure in different ocean regions.
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Affiliation(s)
- Marco J Cabrerizo
- Centro de Investigación Mariña, Universidade de Vigo, Vigo, Spain.,Departamento de Ecología y Biología Animal, Facultad de Ciencias del Mar, Universidade de Vigo, Vigo, Spain
| | - Emilio Marañón
- Centro de Investigación Mariña, Universidade de Vigo, Vigo, Spain.,Departamento de Ecología y Biología Animal, Facultad de Ciencias del Mar, Universidade de Vigo, Vigo, Spain
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20
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Yang JR, Yu X, Chen H, Kuo YM, Yang J. Structural and functional variations of phytoplankton communities in the face of multiple disturbances. J Environ Sci (China) 2021; 100:287-297. [PMID: 33279042 DOI: 10.1016/j.jes.2020.07.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/31/2020] [Accepted: 07/31/2020] [Indexed: 06/12/2023]
Abstract
The global decline of freshwater biodiversity caused by climate change and human activities are supposed to disrupt ecosystem services related to water quality and alter the structure and function of aquatic communities across space and time, yet the effects of the combination of these factors on plankton community ecosystem has received relatively little attention. This study aimed to explore the impacts of disturbances (e.g. human activity, temperature, precipitation, and water level) on phytoplankton community structure (i.e. community evenness and community composition) and function (i.e. resource use efficiency) in four subtropical reservoirs over 7 years from 2010 to 2016. Our results showed that community turnover (measured as community dissimilarity) was positively related to disturbance frequency, but no significant correlation was found between phytoplankton biodiversity (i.e. evenness) and disturbance frequency. Phytoplankton resource use efficiency (RUE = phytoplankton biomass/ total phosphorus) was increased with a higher frequency of disturbance with an exception of cyanobacteria. The RUE of Cyanobacteria and diatoms showed significantly negative correlations with their community evenness, while the RUE of Chlorophyta exhibited a positive correlation with their community turnover. We suggest that multiple environmental disturbances may play crucial roles in shaping the structure and functioning of plankton communities in subtropical reservoirs, and mechanism of this process can provide key information for freshwater uses, management and conservation.
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Affiliation(s)
- Jun R Yang
- Engineering Research Center of Ecology and Agricultural Use of Wetland (Ministry of Education), College of Agriculture, Yangtze University, Jingzhou 434025, China; Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Xiaoqing Yu
- Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Huihuang Chen
- Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Yi-Ming Kuo
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Jun Yang
- Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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21
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Li H, Chen Y, Zhou S, Wang F, Yang T, Zhu Y, Ma Q. Change of dominant phytoplankton groups in the eutrophic coastal sea due to atmospheric deposition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 753:141961. [PMID: 32889319 DOI: 10.1016/j.scitotenv.2020.141961] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/08/2020] [Accepted: 08/23/2020] [Indexed: 06/11/2023]
Abstract
Nutrient stoichiometry and input of trace metals may profoundly affect the growth and community structure of phytoplankton. A bioassay experiment was designed to explore the key components in atmospheric deposition that affect marine phytoplankton growth by adding aerosols and analogues nutrients and Cu to the surface water of the coastal East China Sea (ECS). Our results showed that atmospheric deposition along with the input of phosphate could largely enhance the chlorophyll a (Chl a) concentrations in this eutrophic water. Phosphorus addition lifted the proportions of T. oceanica in Diatoms and B. brevisulcata in Dinoflagellates. T. oceanica replaced S. costatum and became the dominant diatom species after the Chl a peak, probably associated with the N/P ratio approaching to 16. Atmospheric aerosols containing affluent N and little P showed limited promotion to Chl a, and the positive effect was very likely due to the soluble Cu and other trace metals supplied by the aerosol. Moreover, soluble aerosol Cu was found to be conducive to the relative abundance of most dominant class Coscinodiscophyceae, and both soluble aerosol Fe and Cu seemed to be very important for increasing the proportion of S. costatum. Soluble metals could be the key components in aerosols controlling the phytoplankton composition in the eutrophic sea and such impact might exceed affluent P provided by other exogenous sources.
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Affiliation(s)
- Haowen Li
- Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University Jiangwan Campus, Shanghai 200438, China
| | - Ying Chen
- Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University Jiangwan Campus, Shanghai 200438, China; Institute of Eco-Chongming (IEC), No.3663 Northern Zhongshan Road, Shanghai 200062, China; Institute of Atmospheric Sciences, Fudan University Jiangwan Campus, Shanghai 200438, China.
| | - Shengqian Zhou
- Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University Jiangwan Campus, Shanghai 200438, China
| | - Fanghui Wang
- Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University Jiangwan Campus, Shanghai 200438, China
| | - Tianjiao Yang
- Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University Jiangwan Campus, Shanghai 200438, China
| | - Yucheng Zhu
- Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University Jiangwan Campus, Shanghai 200438, China
| | - Qingwei Ma
- Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University Jiangwan Campus, Shanghai 200438, China
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22
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Seifert M, Rost B, Trimborn S, Hauck J. Meta-analysis of multiple driver effects on marine phytoplankton highlights modulating role of pCO 2. GLOBAL CHANGE BIOLOGY 2020; 26:6787-6804. [PMID: 32905664 DOI: 10.1111/gcb.15341] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/26/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
Responses of marine primary production to a changing climate are determined by a concert of multiple environmental changes, for example in temperature, light, pCO2 , nutrients, and grazing. To make robust projections of future global marine primary production, it is crucial to understand multiple driver effects on phytoplankton. This meta-analysis quantifies individual and interactive effects of dual driver combinations on marine phytoplankton growth rates. Almost 50% of the single-species laboratory studies were excluded because central data and metadata (growth rates, carbonate system, experimental treatments) were insufficiently reported. The remaining data (42 studies) allowed for the analysis of interactions of pCO2 with temperature, light, and nutrients, respectively. Growth rates mostly respond non-additively, whereby the interaction with increased pCO2 profusely dampens growth-enhancing effects of high temperature and high light. Multiple and single driver effects on coccolithophores differ from other phytoplankton groups, especially in their high sensitivity to increasing pCO2 . Polar species decrease their growth rate in response to high pCO2 , while temperate and tropical species benefit under these conditions. Based on the observed interactions and projected changes, we anticipate primary productivity to: (a) first increase but eventually decrease in the Arctic Ocean once nutrient limitation outweighs the benefits of higher light availability; (b) decrease in the tropics and mid-latitudes due to intensifying nutrient limitation, possibly amplified by elevated pCO2 ; and (c) increase in the Southern Ocean in view of higher nutrient availability and synergistic interaction with increasing pCO2 . Growth-enhancing effect of high light and warming to coccolithophores, mainly Emiliania huxleyi, might increase their relative abundance as long as not offset by acidification. Dinoflagellates are expected to increase their relative abundance due to their positive growth response to increasing pCO2 and light levels. Our analysis reveals gaps in the knowledge on multiple driver responses and provides recommendations for future work on phytoplankton.
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Affiliation(s)
- Miriam Seifert
- Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
| | - Björn Rost
- Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
- Universität Bremen, Bremen, Germany
| | - Scarlett Trimborn
- Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
- Universität Bremen, Bremen, Germany
| | - Judith Hauck
- Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany
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23
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Junker JR, Cross WF, Benstead JP, Huryn AD, Hood JM, Nelson D, Gíslason GM, Ólafsson JS. Flow is more Important than Temperature in Driving Patterns of Organic Matter Storage and Stoichiometry in Stream Ecosystems. Ecosystems 2020. [DOI: 10.1007/s10021-020-00585-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Keck F, Millet L, Debroas D, Etienne D, Galop D, Rius D, Domaizon I. Assessing the response of micro-eukaryotic diversity to the Great Acceleration using lake sedimentary DNA. Nat Commun 2020; 11:3831. [PMID: 32737305 PMCID: PMC7395174 DOI: 10.1038/s41467-020-17682-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 07/10/2020] [Indexed: 12/17/2022] Open
Abstract
Long-term time series have provided evidence that anthropogenic pressures can threaten lakes. Yet it remains unclear how and the extent to which lake biodiversity has changed during the Anthropocene, in particular for microbes. Here, we used DNA preserved in sediments to compare modern micro-eukaryotic communities with those from the end of the 19th century, i.e., before acceleration of the human imprint on ecosystems. Our results obtained for 48 lakes indicate drastic changes in the composition of microbial communities, coupled with a homogenization of their diversity between lakes. Remote high elevation lakes were globally less impacted than lowland lakes affected by local human activity. All functional groups (micro-algae, parasites, saprotrophs and consumers) underwent significant changes in diversity. However, we show that the effects of anthropogenic changes have benefited in particular phototrophic and mixotrophic species, which is consistent with the hypothesis of a global increase of primary productivity in lakes.
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Affiliation(s)
- François Keck
- INRAE, Université Savoie Mont Blanc, CARRTEL, 74200, Thonon-les-Bains, France.,Pole R&D ECLA, CARRTEL, 74200, Thonon-les-Bains, France
| | | | - Didier Debroas
- Université Clermont Auvergne, CNRS, Laboratoire Microorganismes: Genome et Environnement, 63000, Clermont-Ferrand, France
| | - David Etienne
- Pole R&D ECLA, CARRTEL, 74200, Thonon-les-Bains, France.,Université Savoie Mont Blanc, INRAE, CARRTEL, 73370, Le Bourget du Lac, France
| | - Didier Galop
- GEODE UMR 5602 CNRS, Université de Toulouse, 31058, Toulouse, France.,Labex DRIIHM, OHM Pyrénées, CNRS/INEE, Toulouse, France
| | - Damien Rius
- CNRS, Chrono Environnement, 25000, Besançon, France
| | - Isabelle Domaizon
- INRAE, Université Savoie Mont Blanc, CARRTEL, 74200, Thonon-les-Bains, France. .,Pole R&D ECLA, CARRTEL, 74200, Thonon-les-Bains, France.
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25
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Schulhof MA, Allen AE, Allen EE, Mladenov N, McCrow JP, Jones NT, Blanton J, Cavalheri HB, Kaul D, Symons CC, Shurin JB. Sierra Nevada mountain lake microbial communities are structured by temperature, resources and geographic location. Mol Ecol 2020; 29:2080-2093. [DOI: 10.1111/mec.15469] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 03/02/2020] [Accepted: 04/28/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Marika A. Schulhof
- Division of Biological Sciences University of California San Diego La Jolla CA USA
| | - Andrew E. Allen
- Scripps Institution of Oceanography University of California San Diego La Jolla CA USA
- Department of Microbial and Environmental Genomics J. Craig Venter Institute La Jolla CA USA
| | - Eric E. Allen
- Division of Biological Sciences University of California San Diego La Jolla CA USA
- Scripps Institution of Oceanography University of California San Diego La Jolla CA USA
| | - Natalie Mladenov
- Department of Civil, Construction, & Environmental Engineering San Diego State University San Diego CA USA
| | - John P. McCrow
- Department of Microbial and Environmental Genomics J. Craig Venter Institute La Jolla CA USA
| | - Natalie T. Jones
- Division of Biological Sciences University of California San Diego La Jolla CA USA
- School of Biological Sciences University of Queensland Brisbane Qld Australia
| | - Jessica Blanton
- Scripps Institution of Oceanography University of California San Diego La Jolla CA USA
| | - Hamanda B. Cavalheri
- Division of Biological Sciences University of California San Diego La Jolla CA USA
| | - Drishti Kaul
- Department of Microbial and Environmental Genomics J. Craig Venter Institute La Jolla CA USA
| | - Celia C. Symons
- Division of Biological Sciences University of California San Diego La Jolla CA USA
- Department of Ecology and Evolutionary Biology University of California Irvine Irvine CA USA
| | - Jonathan B. Shurin
- Division of Biological Sciences University of California San Diego La Jolla CA USA
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26
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Cabrerizo MJ, Álvarez-Manzaneda MI, León-Palmero E, Guerrero-Jiménez G, de Senerpont Domis LN, Teurlincx S, González-Olalla JM. Warming and CO 2 effects under oligotrophication on temperate phytoplankton communities. WATER RESEARCH 2020; 173:115579. [PMID: 32059127 DOI: 10.1016/j.watres.2020.115579] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/18/2020] [Accepted: 02/01/2020] [Indexed: 06/10/2023]
Abstract
Eutrophication, global warming, and rising carbon dioxide (CO2) levels are the three most prevalent pressures impacting the biosphere. Despite their individual effects are well-known, it remains untested how oligotrophication (i.e. nutrients reduction) can alter the planktonic community responses to warming and elevated CO2 levels. Here, we performed an indoor mesocosm experiment to investigate the warming × CO2 interaction under a nutrient reduction scenario (40%) mediated by an in-lake management strategy (i.e. addition of a commercial solid-phase phosphorus sorbent -Phoslock®) on a natural freshwater plankton community. Biomass production increased under warming × CO2 relative to present-day conditions; however, a Phoslock®-mediated oligotrophication reduced such values by 30-70%. Conversely, the warming × CO2 × oligotrophication interaction stimulated the photosynthesis by 20% compared to ambient nutrient conditions, and matched with higher resource use efficiency (RUE) and nutrient demand. Surprisingly, at a group level, we found that the multi-stressors scenario increased the photosynthesis in eukaryotes by 25%, but greatly impaired in cyanobacteria (ca. -25%). This higher cyanobacterial sensitivity was coupled with a reduced light harvesting efficiency and compensation point. Since Phoslock®-induced oligotrophication unmasked a strong negative warming × CO2 effect on cyanobacteria, it becomes crucial to understand how the interplay between climate change and nutrient abatement actions may alter the, ecosystems functioning. With an integrative understanding of these processes, policy makers will design more appropriate management strategies to improve the ecological status of aquatic ecosystems without compromising their ecological attributes and functioning.
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Affiliation(s)
- Marco J Cabrerizo
- Department of Ecology, Faculty of Sciences, University of Granada, Campus Fuentenueva, s/n, 18071, Granada, Spain; Centro de Investigación Mariña da Universidade de Vigo (CIM-UVigo), Illa de Toralla s/n, Vigo, 36331, Spain; Department of Ecology and Animal Biology, Faculty of Marine Sciences, University of Vigo, Campus Lagoas Marcosende, Vigo, 36310, Spain.
| | | | - Elizabeth León-Palmero
- Universitary Institute of Water Research, University of Granada, C/ Ramón y Cajal, P. O. 4, 18071, Granada, Spain.
| | - Gerardo Guerrero-Jiménez
- Universitary Institute of Water Research, University of Granada, C/ Ramón y Cajal, P. O. 4, 18071, Granada, Spain.
| | - Lisette N de Senerpont Domis
- Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg, 10, 6708 PB, Wageningen, the Netherlands; Aquatic Ecology and Water Quality Management group, Wageningen University, Wageningen, the Netherlands.
| | - Sven Teurlincx
- Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg, 10, 6708 PB, Wageningen, the Netherlands.
| | - Juan M González-Olalla
- Department of Ecology, Faculty of Sciences, University of Granada, Campus Fuentenueva, s/n, 18071, Granada, Spain.
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27
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Biogeography of Macrophyte Elemental Composition: Spatiotemporal Modification of Species-Level Traits. Ecosystems 2020. [DOI: 10.1007/s10021-020-00484-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Glibert PM. Harmful algae at the complex nexus of eutrophication and climate change. HARMFUL ALGAE 2020; 91:101583. [PMID: 32057336 DOI: 10.1016/j.hal.2019.03.001] [Citation(s) in RCA: 115] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 03/07/2019] [Indexed: 05/21/2023]
Abstract
Climate projections suggest-with substantial certainty-that global warming >1.5 °C will occur by mid-century (2050). Population is also projected to increase, amplifying the demands for food, fuel, water and sanitation, which, in turn, escalate nutrient pollution. Global projections of nutrient pollution, however, are less certain than those of climate as there are regionally decreasing trends projected in Europe, and stabilization of nutrient use in North America and Australia. In this review of the effects of eutrophication and climate on harmful algae, some of the complex, subtle, and non-intuitive effects and interactions on the physiology of both harmful and non-harmful taxa are emphasized. In a future ocean, non-harmful diatoms may be disproportionately stressed and mixotrophs advantaged due to changing nutrient stoichiometry and forms of nutrients, temperature, stratification and oceanic pH. Modeling is advancing, but there is much yet to be understood, in terms of physiology, biogeochemistry and trophodynamics and how both harmful and nonharmful taxa may change in an uncertain future driven by anthropogenic activities.
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Affiliation(s)
- Patricia M Glibert
- University of Maryland Center for Environmental Science, Horn Point Laboratory, PO Box 775, Cambridge, MD, 21613, United States.
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29
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Russo DA, Ferguson A, Beckerman AP, Pandhal J. Structural Equation Modelling Reveals That Nutrients and Physicochemistry Act Additively on the Dynamics of a Microcosm-Based Biotic Community. BIOLOGY 2019; 8:E87. [PMID: 31739593 PMCID: PMC6956329 DOI: 10.3390/biology8040087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/28/2019] [Accepted: 11/08/2019] [Indexed: 11/16/2022]
Abstract
Anthropogenic eutrophication has caused widespread environmental problems in freshwater lakes, reducing biodiversity and disrupting the classic pelagic food chain. Increasing our understanding of the exact role of nutrients and physicochemical variables on microbial dynamics, and subsequent microalgal and cyanobacterial blooms, has involved numerous studies ranging from replicate microcosm-based studies through to temporal studies of real lake data. In a previous experimental microcosm study, we utilised metaproteomics to investigate the functional changes of a microalgal-bacterial community under oligotrophic and eutrophic nutrient levels. Here, we analyse the time series data from this experiment with a combination of typically used univariate analyses and a more modern multivariate approach, structural equation modelling. Our aim was to test, using these modern methods, whether physicochemical variables and nutrient dynamics acted additively, synergistically, or antagonistically on the specific biotic community used in the microcosms. We found that nutrients (nitrogen and phosphorus) and temperature acted additively on the interactions between the microalgae and bacteria present, with the temperature effects elevated in the eutrophic conditions we applied. The data suggests that there may be no synergistic interaction between nutrients and temperature in the tested microcosms. Our approach demonstrates how the application of multivariate methods to existing datasets, in our case from nutrient-enriched freshwater microcosms, enables new information to be extracted, enhancing interpretations as well as allowing more reliable comparisons to similar published studies.
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Affiliation(s)
- David A. Russo
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK;
| | - Andrew Ferguson
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK;
| | - Andrew P. Beckerman
- Department of Animal and Plant Sciences, University of Sheffield, Alfred Denny Building, Western Bank, Sheffield S10 2TN, UK;
| | - Jagroop Pandhal
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK;
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30
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Mei L, Yang X, Zhang S, Zhang T, Guo J. Arbuscular mycorrhizal fungi alleviate phosphorus limitation by reducing plant N:P ratios under warming and nitrogen addition in a temperate meadow ecosystem. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 686:1129-1139. [PMID: 31412509 DOI: 10.1016/j.scitotenv.2019.06.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/31/2019] [Accepted: 06/03/2019] [Indexed: 06/10/2023]
Abstract
Global change apart from ecosystem processes also influences the community structure of key organisms, such as arbuscular mycorrhizal fungi (AMF). We conducted a 3-year experiment where we suppressed with benomyl mycorrhiza to understand how AMF alter the plant community structure under warming and nitrogen (N) addition. The elemental content and foliar tissue stoichiometry of the dominant species Leymus chinensis and the subordinate species Puccinellia tenuiflora were studied along with soil nutrient stoichiometries. Overall, N addition enhanced plant N: phosphorus (P) ratios at a greater level than experimental warming did. Under global change conditions, AMF symbionts significantly increased soil available P concentrations, promoted plant P absorption and decreased the plant N:P ratios. AMF alleviate P limitation by reducing plant N:P ratios. Our results highlight that the negative influence of global change on plant productivity might cancel each other out through the additive effects of AMF and that global change will increase the dependency of plants on their mycorrhizal symbionts.
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Affiliation(s)
- Linlin Mei
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China
| | - Xue Yang
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China
| | - Shuaiqing Zhang
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China
| | - Tao Zhang
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China.
| | - Jixun Guo
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China.
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31
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Gerhard M, Koussoroplis AM, Hillebrand H, Striebel M. Phytoplankton community responses to temperature fluctuations under different nutrient concentrations and stoichiometry. Ecology 2019; 100:e02834. [DOI: 10.1002/ecy.2834] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 06/25/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Miriam Gerhard
- Institute for Chemistry and Biology of the Marine Environment (ICBM) University of Oldenburg, Schleusenstrsse 1, 26382 Wilhelmshaven Germany
| | - Apostolos Manuel Koussoroplis
- Laboratoire Microorganismes Génome et Environnement (LMGE) UMR CNRS 6023 Université Clermont Auvergne, 1 ImpasseAmélie Murat, F‐63178 Aubière cedex France
- Theoretical Aquatic Ecology and Ecophysiology Group Institute of Biochemistry and Biology University of Potsdam, Am Neuen Palais 10, Maulbeerallee 2, D‐14469 Potsdam Germany
| | - Helmut Hillebrand
- Institute for Chemistry and Biology of the Marine Environment (ICBM) University of Oldenburg, Schleusenstrsse 1, 26382 Wilhelmshaven Germany
- Helmholtz Institute for Functional Marine Biodiversity (HIFMB) University of Oldenburg, Ammerländer Heerstraße 231, 26129 Oldenburg Germany
| | - Maren Striebel
- Institute for Chemistry and Biology of the Marine Environment (ICBM) University of Oldenburg, Schleusenstrsse 1, 26382 Wilhelmshaven Germany
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32
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Schulhof MA, Shurin JB, Declerck SAJ, Van de Waal DB. Phytoplankton growth and stoichiometric responses to warming, nutrient addition and grazing depend on lake productivity and cell size. GLOBAL CHANGE BIOLOGY 2019; 25:2751-2762. [PMID: 31004556 PMCID: PMC6852242 DOI: 10.1111/gcb.14660] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/27/2019] [Accepted: 04/05/2019] [Indexed: 06/07/2023]
Abstract
Global change involves shifts in multiple environmental factors that act in concert to shape ecological systems in ways that depend on local biotic and abiotic conditions. Little is known about the effects of combined global change stressors on phytoplankton communities, and particularly how these are mediated by distinct community properties such as productivity, grazing pressure and size distribution. Here, we tested for the effects of warming and eutrophication on phytoplankton net growth rate and C:N:P stoichiometry in two phytoplankton cell size fractions (<30 µm and >30 µm) in the presence and absence of grazing in microcosm experiments. Because effects may also depend on lake productivity, we used phytoplankton communities from three Dutch lakes spanning a trophic gradient. We measured the response of each community to multifactorial combinations of temperature, nutrient, and grazing treatments and found that nutrients elevated net growth rates and reduced carbon:nutrient ratios of all three phytoplankton communities. Warming effects on growth and stoichiometry depended on nutrient supply and lake productivity, with enhanced growth in the most productive community dominated by cyanobacteria, and strongest stoichiometric responses in the most oligotrophic community at ambient nutrient levels. Grazing effects were also most evident in the most oligotrophic community, with reduced net growth rates and phytoplankton C:P stoichiometry that suggests consumer-driven nutrient recycling. Our experiments indicate that stoichiometric responses to warming and interactions with nutrient addition and grazing are not universal but depend on lake productivity and cell size distribution.
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Affiliation(s)
- Marika A. Schulhof
- Division of Biological Sciences, Section of Ecology, Behavior & EvolutionUniversity of California San DiegoLa JollaCalifornia
- Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO‐KNAW)Wageningenthe Netherlands
| | - Jonathan B. Shurin
- Division of Biological Sciences, Section of Ecology, Behavior & EvolutionUniversity of California San DiegoLa JollaCalifornia
| | - Steven A. J. Declerck
- Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO‐KNAW)Wageningenthe Netherlands
| | - Dedmer B. Van de Waal
- Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO‐KNAW)Wageningenthe Netherlands
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33
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Pálffy K, Vörös L. Phytoplankton functional composition shows higher seasonal variability in a large shallow lake after a eutrophic past. Ecosphere 2019. [DOI: 10.1002/ecs2.2684] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Károly Pálffy
- Balaton Limnological Institute MTA Centre for Ecological Research 3 Klebelsberg Kuno Street Tihany H‐8237 Hungary
- GINOP Sustainable Ecosystems Group MTA Centre for Ecological Research 3 Klebelsberg Kuno Street Tihany H‐8237 Hungary
| | - Lajos Vörös
- Balaton Limnological Institute MTA Centre for Ecological Research 3 Klebelsberg Kuno Street Tihany H‐8237 Hungary
- GINOP Sustainable Ecosystems Group MTA Centre for Ecological Research 3 Klebelsberg Kuno Street Tihany H‐8237 Hungary
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34
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Li W, Xu X, Yao J, Tanaka N, Nishimura O, Ma H. Combined effects of elevated carbon dioxide and temperature on phytoplankton-zooplankton link: A multi-influence of climate change on freshwater planktonic communities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 658:1175-1185. [PMID: 30677981 DOI: 10.1016/j.scitotenv.2018.12.180] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 11/02/2018] [Accepted: 12/11/2018] [Indexed: 06/09/2023]
Abstract
It is essential to understand the combined effects of elevated CO2 and temperature on phytoplankton-zooplankton link when attempting to predict climate change responses of freshwater ecosystems. Phytoplankton species differ in stoichiometric and fatty acids composition, and this may result in phytoplankton-mediated effect on zooplankton at elevated CO2 and temperature. Beyond the isolated analysis of CO2 or temperature effect, few studies have assessed zooplankton growth under the phytoplankton-mediated effects of elevated CO2 and temperature. In this study, three algal species (green alga, diatom, cyanobacteria) were fed on zooplankton Daphnia magna, under the conditions of CO2 concentrations of ambient (390 ppm) and elevated (1000 ppm) levels and temperatures at 20, 25 and 30 °C. Elevated CO2 increased the algal biomass, while it reduced the phosphorus (P) and ω3 polyunsaturated fatty acids (ω3 PUFAs) to carbon (C) ratios. Elevated temperature decreased the P/C ratios in all algal cultures and ω3 PUFAs/C ratios in the diatom and the cyanobacteria cultures. Phytoplankton-mediated effect of elevated CO2 reduced the growth of zooplankton fed on the green and the mixed three algae culture. The stimulation of zooplankton fed on the diatom and the cyanobacteria by elevated temperature can be offset by decreasing food P and ω3 PUFAs contents. The combined effects of elevated CO2 and temperature on the growth of daphnids were mainly mediated by ω3 PUFAs/C ratios in the phytoplankton. Rising temperature as a combined direct and indirectly phytoplankton-mediated effect on zooplankton may be able to ameliorate the negative effects of elevated CO2. The results indicated that the combined effects of increased CO2 and temperature increased the fatty acid content of the green alga but not the other algae. This study highlighted that climate change with simultaneously increasing temperature and CO2 may entangle the carbon transfer in freshwater planktonic communities.
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Affiliation(s)
- Wei Li
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Shabei Road 83, Chongqing 400045, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki 6-6-06, Sendai 980-8579, Japan.
| | - Xiaoguang Xu
- School of Environment, Nanjing Normal University, Wenyuan Road 1, Nanjing 210023, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki 6-6-06, Sendai 980-8579, Japan
| | - Jingmei Yao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Shabei Road 83, Chongqing 400045, China
| | - Nobuyuki Tanaka
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki 6-6-06, Sendai 980-8579, Japan
| | - Osamu Nishimura
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba Aramaki 6-6-06, Sendai 980-8579, Japan
| | - Hua Ma
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Shabei Road 83, Chongqing 400045, China
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35
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Vinçon-Leite B, Casenave C. Modelling eutrophication in lake ecosystems: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 651:2985-3001. [PMID: 30463149 DOI: 10.1016/j.scitotenv.2018.09.320] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/24/2018] [Accepted: 09/24/2018] [Indexed: 06/09/2023]
Abstract
Eutrophication is one of the main causes of the degradation of lake ecosystems. Its intensification during the last decades has led the stakeholders to seek for water management and restoration solutions, including those based on modelling approaches. This paper presents a review of lake eutrophication modelling, on the basis of a scientific appraisal performed by researchers for the French ministries of Environment and Agriculture. After a brief introduction presenting the scientific context, a bibliography analysis is presented. Then the main results obtained with process-based models are summarized. A synthesis of the scientist recommendations in order to improve the lake eutrophication modelling is finally given before the conclusion.
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Affiliation(s)
- Brigitte Vinçon-Leite
- LEESU Ecole des Ponts ParisTech, AgroParisTech, UPEC 6-8 Avenue Blaise Pascal, 77455, Marne-la-Vallée, France.
| | - Céline Casenave
- INRA, UMR MISTEA - Mathematics, Informatics and STatistics for Environment and Agronomy, 2 place Pierre Viala, 34060, Montpellier, France
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36
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Hao B, Wu H, Jeppesen E, Li W. The response of phytoplankton communities to experimentally elevated temperatures in the presence and absence of Potamogeton crispus. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.09.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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37
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He H, Jin H, Jeppesen E, Li K, Liu Z, Zhang Y. Fish-mediated plankton responses to increased temperature in subtropical aquatic mesocosm ecosystems: Implications for lake management. WATER RESEARCH 2018; 144:304-311. [PMID: 30071399 DOI: 10.1016/j.watres.2018.07.055] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 06/27/2018] [Accepted: 07/20/2018] [Indexed: 06/08/2023]
Abstract
Although it is well established that climate warming can reinforce eutrophication in shallow lakes by altering top-down and bottom-up processes in the food web and biogeochemical cycling, recent studies in temperate zones have also shown that adverse effects of rising temperature are diminished in fishless systems. Whereas the removal of zooplanktivorous fish may be useful in attempts to mitigate eutrophication in temperate shallow lakes, it is uncertain whether similar mitigation might be achieved in warmer climates. We compared the responses of zooplankton and phytoplankton communities to climate warming in the presence and absence of fish (Aristichthys nobilis) in a 4-month mesocosm experiment at subtropical temperatures. We hypothesized that 1) fish and phytoplankton would benefit from warming, while zooplankton would suffer in fish-present mesocosms and 2) warming would favor zooplankton growth but reduce phytoplankton biomass in fish-absent mesocosms. Our results showed significant interacting effects of warming and fish presence on both phytoplankton and zooplankton. In mesocosms with fish, biomasses of fish and phytoplankton increased in heated treatments, while biomasses of Daphnia and total zooplankton declined. Warming reduced the proportion of large Daphnia in total zooplankton biomass, and reduced the zooplankton to phytoplankton biomass ratio, but increased the ratio of chlorophyll a to total phosphorus, indicating a relaxation of zooplankton grazing pressure on phytoplankton. Meanwhile, warming resulted in a 3-fold increase in TP concentrations in the mesocosms with fish present. The results suggest that climate warming has the potential to boost eutrophication in shallow lakes via both top-down (loss of herbivores) and bottom-up (elevated nutrient) effects. However, in the mesocosms without fish, there was no decline in large Daphnia or in total zooplankton biomass, supporting the conclusion that fish predation is the major driver of low large Daphnia abundance in warm lakes. In the fishless mesocosms, phytoplankton biomass and nutrient levels were not affected by temperature. Our study suggests that removing fish to mitigate warming effects on eutrophication may be potentially beneficial in subtropical lakes, though the rapid recruitment of fish in such lakes may present a challenge to success in the long-term.
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Affiliation(s)
- Hu He
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
| | - Hui Jin
- Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands
| | - Erik Jeppesen
- Department of Bioscience, Aarhus University, Aarhus, Denmark; Sino-Danish Centre for Education and Research, Beijing 100049, China
| | - Kuanyi Li
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; Sino-Danish Centre for Education and Research, Beijing 100049, China
| | - Zhengwen Liu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; Sino-Danish Centre for Education and Research, Beijing 100049, China; Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
| | - Yongdong Zhang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
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38
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Verbeek L, Gall A, Hillebrand H, Striebel M. Warming and oligotrophication cause shifts in freshwater phytoplankton communities. GLOBAL CHANGE BIOLOGY 2018; 24:4532-4543. [PMID: 29856108 DOI: 10.1111/gcb.14337] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 05/02/2018] [Accepted: 05/11/2018] [Indexed: 05/06/2023]
Abstract
While there is a lot of data on interactive effects of eutrophication and warming, to date, we lack data to generate reliable predictions concerning possible effects of nutrient decrease and temperature increase on community composition and functional responses. In recent years, a wide-ranging trend of nutrient decrease (re-oligotrophication) was reported for freshwater systems. Small lakes and ponds, in particular, show rapid responses to anthropogenic pressures and became model systems to investigate single as well as synergistic effects of warming and fertilization in situ and in experiments. Therefore, we set up an experiment to investigate the single as well as the interactive effects of nutrient reduction and gradual temperature increase on a natural freshwater phytoplankton community, using an experimental indoor mesocosm setup. Biomass production initially increased with warming but decreased with nutrient depletion. If nutrient supply was constant, biomass increased further, especially under warming conditions. Under low nutrient supply, we found a sharp transition from initially positive effects of warming to negative effects when resources became scarce. Warming reduced phytoplankton richness and evenness, whereas nutrient reduction at ambient temperature had positive effects on diversity. Our results indicate that temperature effects on freshwater systems will be altered by nutrient availability. These interactive effects of energy increase and resource decrease have major impacts on biodiversity and ecosystem function and thus need to be considered in environmental management plans.
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Affiliation(s)
- Laura Verbeek
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Wilhelmshaven, Germany
| | - Andrea Gall
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Wilhelmshaven, Germany
| | - Helmut Hillebrand
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Wilhelmshaven, Germany
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), Oldenburg, Germany
| | - Maren Striebel
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Wilhelmshaven, Germany
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39
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Lürling M, Mello MME, van Oosterhout F, de Senerpont Domis L, Marinho MM. Response of Natural Cyanobacteria and Algae Assemblages to a Nutrient Pulse and Elevated Temperature. Front Microbiol 2018; 9:1851. [PMID: 30150976 PMCID: PMC6099115 DOI: 10.3389/fmicb.2018.01851] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 07/24/2018] [Indexed: 11/29/2022] Open
Abstract
Eutrophication (nutrient over-enrichment) is the primary worldwide water quality issue often leading to nuisance cyanobacterial blooms. Climate change is predicted to cause further rise of cyanobacteria blooms as cyanobacteria can have a competitive advantage at elevated temperatures. We tested the hypothesis that simultaneous rise in nutrients and temperature will promote cyanobacteria more than a single increase in one of the two drivers. To this end, controlled experiments were run with seston from 39 different urban water bodies varying in trophic state from mesotrophic to hypertrophic. These experiments were carried out at two different temperatures, 20°C (ambient) and 25°C (warming scenario) with or without the addition of a surplus of nutrients (eutrophication scenario). To facilitate comparisons, we quantified the effect size of the different treatments, using cyanobacterial and algal chlorophyll a concentrations as a response variable. Cyanobacterial and algal chlorophyll a concentrations were determined with a PHYTO-PAM phytoplankton analyzer. Warming caused an 18% increase in cyanobacterial chlorophyll-a, while algal chlorophyll-a concentrations were on average 8% higher at 25°C than at 20°C. A nutrient pulse had a much stronger effect on chlorophyll-a concentrations than warming. Cyanobacterial chlorophyll-a concentrations in nutrient enriched incubations at 20 or 25°C were similar and 9 times higher than in the incubations without nutrient pulse. Likewise, algal chlorophyll-a concentrations were 6 times higher. The results of this study confirm that warming alone yields marginally higher cyanobacteria chlorophyll-a concentrations, yet that a pulse of additional nutrients is boosting blooms. The responses of seston originating from mesotrophic waters seemed less strong than those from eutrophic waters, which indicates that nutrient control strategies –catchment as well as in-system measures– could increase the resilience of surface waters to the negative effects of climate change.
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Affiliation(s)
- Miquel Lürling
- Aquatic Ecology and Water Quality Management Group, Department of Environmental Sciences, Wageningen University & Research, Wageningen, Netherlands.,Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands
| | - Mariana Mendes E Mello
- Aquatic Ecology and Water Quality Management Group, Department of Environmental Sciences, Wageningen University & Research, Wageningen, Netherlands.,Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Frank van Oosterhout
- Aquatic Ecology and Water Quality Management Group, Department of Environmental Sciences, Wageningen University & Research, Wageningen, Netherlands
| | - Lisette de Senerpont Domis
- Aquatic Ecology and Water Quality Management Group, Department of Environmental Sciences, Wageningen University & Research, Wageningen, Netherlands.,Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands
| | - Marcelo M Marinho
- Laboratory of Ecology and Physiology of Phytoplankton, Department of Plant Biology, Rio de Janeiro State University, Rio de Janeiro, Brazil
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40
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Combined Effects of Experimental Warming and Eutrophication on Phytoplankton Dynamics and Nitrogen Uptake. WATER 2018. [DOI: 10.3390/w10081057] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Shallow lakes are highly vulnerable to damages caused by human activities and warming trends. To assess whether and how community structures of phytoplankton and nitrogen uptake respond to the combined effects of elevated temperature and eutrophication, we performed a mesocosm experiment in field by combining a 4.5 °C increase in temperature and the addition of phosphorus. Our results demonstrated that the combination of rising temperatures and phosphorus loading stimulated the maximum biomass built up by the phytoplankton community, and changed the phytoplankton community by significantly increasing the number of Chlorophyta and Cyanophyta, and decreasing that of Cryptophyta. We also examined the effects of climate warming and eutrophication on phytoplankton nitrogen uptake and dynamics using 15N tracer techniques. The addition of phosphorus slightly increased the phytoplankton nitrate uptake velocity and relative preference index, but decreased the nitrate uptake turnover time. Warming relatively increased the ammonium uptake velocity and the relative preference index, but decreased the ammonium turnover time. In kinetic studies, NH4+ exhibited a higher maximum uptake rate (Vmax) and a lower half-saturation constant (Ks) than NO3− substrates due to temperature elevation and the addition of phosphorus. Hence, warming and eutrophication increased the capacity of phytoplankton for NH4+ uptake and their affinity at low substrate concentrations. Thus, the combined effects of climate warming and phosphorus nutrient availability may increase the prevalence of Chlorophyta and Cyanophyta, and change the nitrogen cycling of aquatic ecosystems.
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41
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Li D, Wu N, Tang S, Su G, Li X, Zhang Y, Wang G, Zhang J, Liu H, Hecker M, Giesy JP, Yu H. Factors associated with blooms of cyanobacteria in a large shallow lake, China. ENVIRONMENTAL SCIENCES EUROPE 2018; 30:27. [PMID: 30148024 PMCID: PMC6096964 DOI: 10.1186/s12302-018-0152-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 06/11/2018] [Indexed: 05/25/2023]
Abstract
BACKGROUND Eutrophication of freshwater systems can result in blooms of phytoplankton, in many cases cyanobacteria. This can lead to shifts in structure and functions of phytoplankton communities adversely affecting the quality of drinking water sources, which in turn impairs public health. Relationships between structures of phytoplankton communities and concentrations of the toxicant, microcystin-leucine-arginine (MC-LR), have not been well examined in large shallow lakes. The present study investigated phytoplankton communities at seven locations from January to December of 2015 in Tai Lake, and relationships between structures and diversities of phytoplankton communities and water quality parameters, including concentrations of MC-LR and metals, were analyzed. RESULTS A total of 124 taxa of phytoplankton were observed, and the predominant taxa were Microcystis sp. and Dolichospermum flos-aquae of Cyanophyta and Planctonema sp. of Chlorophyta. The greatest diversities of phytoplankton communities, as indicated by species richness, Simpson, Shannon-Wiener, the Berger and Parker, and the Pielou evenness indices, were observed in spring. Furthermore, productivity of phytoplankton was significantly and negatively correlated with diversities. These results demonstrated that Simpson, Shannon-Wiener, the Berger and Parker, and the Pielou evenness indices of phytoplankton communities were significantly related to trophic status and overall primary productivity in Tai Lake. In addition, temperature of surface water, pH, permanganate index, biochemical oxygen demand, total phosphorus, arsenic, total nitrogen/total phosphorous ratio, and MC-LR were the main factors associated with structures of phytoplankton communities in Tai Lake. CONCLUSION The present study provided helpful information on phytoplankton community structure and diversity in Tai Lake from January to December of 2015. Our findings demonstrated that Simpson, Shannon-Wiener, the Berger and Parker, and the Pielou evenness indices could be used to assess and monitor for status and trends in water quality of Tai Lake. In addition, MC-LR was one of the main factors associated with structures of phytoplankton communities in Tai Lake. The findings may help to address important ecological questions about the impact of a changing environment on biodiversity of lake ecosystems and the control of algae bloom. Further studies are needed to explore the relationship between MC-LR and phytoplankton communities in the laboratory.
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Affiliation(s)
- Di Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046 China
- Jiangsu Environmental Monitoring Center, Nanjing, Jiangsu 210036 China
| | - Naicheng Wu
- Department of Hydrology and Water Resources Management, Kiel University, Kiel, 24118 Germany
| | - Song Tang
- National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing, 100021 China
| | - Guanyong Su
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094 China
| | - Xuwen Li
- Jiangsu Environmental Monitoring Center, Nanjing, Jiangsu 210036 China
| | - Yong Zhang
- Jiangsu Environmental Monitoring Center, Nanjing, Jiangsu 210036 China
| | - Guoxiang Wang
- School of the Environment, Nanjing Normal University, Nanjing, Jiangsu 210023 China
| | - Junyi Zhang
- Wuxi Environmental Monitoring Center, Wuxi, Jiangsu 214000 China
| | - Hongling Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046 China
| | - Markus Hecker
- Toxicology Centre, University of Saskatchewan, Saskatoon, SK S7N 5B3 Canada
- School of Environment and Sustainability, University of Saskatchewan, Saskatoon, SK S7N 5C3 Canada
| | - John P. Giesy
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046 China
- Department of Veterinary Biomedical Sciences and Toxicology Centre, University of Saskatchewan, Saskatoon, SK S7N5B3 Canada
- Department of Zoology and Center for Integrative Toxicology, Michigan State University, East Lansing, MI 48824 USA
- School of Biological Sciences, University of Hong Kong, Hong Kong, SAR China
| | - Hongxia Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046 China
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Berner C, Bertos-Fortis M, Pinhassi J, Legrand C. Response of Microbial Communities to Changing Climate Conditions During Summer Cyanobacterial Blooms in the Baltic Sea. Front Microbiol 2018; 9:1562. [PMID: 30090087 PMCID: PMC6068395 DOI: 10.3389/fmicb.2018.01562] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 06/25/2018] [Indexed: 11/13/2022] Open
Abstract
Frequencies and biomass of Baltic Sea cyanobacterial blooms are expected to be higher in future climate conditions, but also of longer duration as a result of increased sea surface temperature. Concurrently, climate predictions indicate a reduced salinity in the Baltic Sea. These climate-driven changes are expected to alter not solely the phytoplankton community but also the role of microbial communities for nutrient remineralization. Here, we present the response of summer plankton communities (filamentous cyanobacteria, picocyanobacteria, and heterotrophic bacteria) to the interplay of increasing temperature (from 16 to 18°C and 20°C) and reduced salinity (from salinity 6.9 to 5.9) in the Baltic Proper (NW Gotland Sea) using a microcosm approach. Warmer temperatures led to an earlier peak of cyanobacterial biomass, while yields were reduced. These conditions caused a decrease of nitrogen-fixers (Dolichospermum sp.) biomass, while non nitrogen-fixers (Pseudanabaena sp.) increased. Salinity reduction did not affect cyanobacterial growth nor community composition. Among heterotrophic bacteria, Actinobacteria showed preference for high temperature, while Gammaproteobacteria thrived at in situ temperature. Heterotrophic bacteria community changed drastically at lower salinity and resembled communities at high temperature. Picocyanobacteria and heterotrophic bacterial biomass had a pronounced increase associated with the decay of filamentous cyanobacteria. This suggests that shifts in community composition of heterotrophic bacteria are influenced both directly by abiotic factors (temperature and salinity) and potentially indirectly by cyanobacteria. Our findings suggest that at warmer temperature, lower yield of photosynthetic cyanobacteria combined with lower proportion of nitrogen-fixers in the community could result in lower carbon export to the marine food web with consequences for the decomposer community of heterotrophic bacteria.
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Affiliation(s)
- Christoffer Berner
- Department of Biology and Environmental Science, Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar, Sweden
| | - Mireia Bertos-Fortis
- Department of Biology and Environmental Science, Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar, Sweden
| | - Jarone Pinhassi
- Department of Biology and Environmental Science, Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar, Sweden
| | - Catherine Legrand
- Department of Biology and Environmental Science, Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, Kalmar, Sweden
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Bui T, Dao TS, Vo TG, Lürling M. Warming Affects Growth Rates and Microcystin Production in Tropical Bloom-Forming Microcystis Strains. Toxins (Basel) 2018; 10:E123. [PMID: 29538312 PMCID: PMC5869411 DOI: 10.3390/toxins10030123] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/27/2018] [Accepted: 03/12/2018] [Indexed: 01/27/2023] Open
Abstract
Warming climate is predicted to promote cyanobacterial blooms but the toxicity of cyanobacteria under global warming is less well studied. We tested the hypothesis that raising temperature may lead to increased growth rates but to decreased microcystin (MC) production in tropical Microcystis strains. To this end, six Microcystis strains were isolated from different water bodies in Southern Vietnam. They were grown in triplicate at 27 °C (low), 31 °C (medium), 35 °C (high) and 37 °C (extreme). Chlorophyll-a-, particle- and MC concentrations as well as dry-weights were determined. All strains yielded higher biomass in terms of chlorophyll-a concentration and dry-weight at 31 °C compared to 27 °C and then either stabilised, slightly increased or declined with higher temperature. Five strains easily grew at 37 °C but one could not survive at 37 °C. When temperature was increased from 27 °C to 37 °C total MC concentration decreased by 35% in strains with MC-LR as the dominant variant and by 94% in strains with MC-RR. MC quota expressed per particle, per unit chlorophyll-a and per unit dry-weight significantly declined with higher temperatures. This study shows that warming can prompt the growth of some tropical Microcystis strains but that these strains become less toxic.
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Affiliation(s)
- Trung Bui
- Aquatic Ecology & Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands.
- Institute for Environment and Resources, Vietnam National University, Hochiminh City, Linh Trung Ward, Thu Duc District, 700000 Ho Chi Minh City, Vietnam.
| | - Thanh-Son Dao
- Hochiminh City University of Technology, Vietnam National University, Hochiminh City, 268 Ly Thuong Kiet Street, District 10, 700000 Ho Chi Minh City, Vietnam.
| | - Truong-Giang Vo
- National Breeding Center for Southern Marine Aquaculture, 167 Thuy Van Street, Vung Tau Town, Ba Ria 790000, Vung Tau Province, Vietnam.
| | - Miquel Lürling
- Aquatic Ecology & Water Quality Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands.
- Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, 6700 AB Wageningen, The Netherlands.
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Hood JM, Benstead JP, Cross WF, Huryn AD, Johnson PW, Gíslason GM, Junker JR, Nelson D, Ólafsson JS, Tran C. Increased resource use efficiency amplifies positive response of aquatic primary production to experimental warming. GLOBAL CHANGE BIOLOGY 2018; 24:1069-1084. [PMID: 28922515 DOI: 10.1111/gcb.13912] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 08/21/2017] [Accepted: 09/03/2017] [Indexed: 06/07/2023]
Abstract
Climate warming is affecting the structure and function of river ecosystems, including their role in transforming and transporting carbon (C), nitrogen (N), and phosphorus (P). Predicting how river ecosystems respond to warming has been hindered by a dearth of information about how otherwise well-studied physiological responses to temperature scale from organismal to ecosystem levels. We conducted an ecosystem-level temperature manipulation to quantify how coupling of stream ecosystem metabolism and nutrient uptake responded to a realistic warming scenario. A ~3.3°C increase in mean water temperature altered coupling of C, N, and P fluxes in ways inconsistent with single-species laboratory experiments. Net primary production tripled during the year of experimental warming, while whole-stream N and P uptake rates did not change, resulting in 289% and 281% increases in autotrophic dissolved inorganic N and P use efficiency (UE), respectively. Increased ecosystem production was a product of unexpectedly large increases in mass-specific net primary production and autotroph biomass, supported by (i) combined increases in resource availability (via N mineralization and N2 fixation) and (ii) elevated resource use efficiency, the latter associated with changes in community structure. These large changes in C and nutrient cycling could not have been predicted from the physiological effects of temperature alone. Our experiment provides clear ecosystem-level evidence that warming can shift the balance between C and nutrient cycling in rivers, demonstrating that warming will alter the important role of in-stream processes in C, N, and P transformations. Moreover, our results reveal a key role for nutrient supply and use efficiency in mediating responses of primary producers to climate warming.
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Affiliation(s)
- James M Hood
- Aquatic Ecology Laboratory, Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, Columbus, OH, USA
- Department of Ecology, Montana State University, Bozeman, MT, USA
| | - Jonathan P Benstead
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
| | - Wyatt F Cross
- Department of Ecology, Montana State University, Bozeman, MT, USA
| | - Alexander D Huryn
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
| | - Philip W Johnson
- Department of Civil, Construction, and Environmental Engineering, University of Alabama, Tuscaloosa, AL, USA
| | - Gísli M Gíslason
- Institute of Life and Environmental Sciences, University of Iceland, Reykjavík, Iceland
| | - James R Junker
- Department of Ecology, Montana State University, Bozeman, MT, USA
| | - Daniel Nelson
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
| | - Jón S Ólafsson
- Marine and Freshwater Research Institute, Reykjavík, Iceland
| | - Chau Tran
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, USA
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45
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Glibert PM. Eutrophication, harmful algae and biodiversity - Challenging paradigms in a world of complex nutrient changes. MARINE POLLUTION BULLETIN 2017; 124:591-606. [PMID: 28434665 DOI: 10.1016/j.marpolbul.2017.04.027] [Citation(s) in RCA: 191] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 04/12/2017] [Accepted: 04/13/2017] [Indexed: 06/07/2023]
Abstract
Eutrophication is a complex process and often associated with not only a change in overall algal biomass but also with a change in biodiversity. Common metrics of eutrophication (e.g., chlorophyll a), total nitrogen (TN) and phosphorus (TP) are not adequate for understanding biodiversity changes, especially those associated with harmful algal bloom (HAB) proliferations. Harmful algae can increase disproportionately with eutrophication, depending on which nutrients change and in what proportion. This paper challenges several classic paradigms in our understanding of eutrophication and associated biodiversity changes. The underlying message is that nutrient proportions and forms can alter biodiversity, even when nutrients are at concentrations in excess of those considered limiting. The global HAB problem is on a trajectory for more blooms, more toxins, more often, in more places. Our approach to management of HABs and eutrophication must consider the broader complexity of nutrient effects at scales ranging from physiological to ecological.
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Affiliation(s)
- Patricia M Glibert
- University of Maryland Center for Environmental Science, Horn Point Laboratory, PO Box 6775, Cambridge, MD 21613, USA.
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Frenken T, Alacid E, Berger SA, Bourne EC, Gerphagnon M, Grossart HP, Gsell AS, Ibelings BW, Kagami M, Küpper FC, Letcher PM, Loyau A, Miki T, Nejstgaard JC, Rasconi S, Reñé A, Rohrlack T, Rojas-Jimenez K, Schmeller DS, Scholz B, Seto K, Sime-Ngando T, Sukenik A, Van de Waal DB, Van den Wyngaert S, Van Donk E, Wolinska J, Wurzbacher C, Agha R. Integrating chytrid fungal parasites into plankton ecology: research gaps and needs. Environ Microbiol 2017; 19:3802-3822. [DOI: 10.1111/1462-2920.13827] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 06/09/2017] [Accepted: 06/10/2017] [Indexed: 01/19/2023]
Affiliation(s)
- Thijs Frenken
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10; Wageningen PB 6708 The Netherlands
| | - Elisabet Alacid
- Departament de Biologia Marina i Oceanografia; Institut de Ciències del Mar (CSIC), Pg. Marítim de la Barceloneta, 37-49; Barcelona 08003 Spain
| | - Stella A. Berger
- Department of Experimental Limnology; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Alte Fischerhuette 2; Stechlin D-16775 Germany
| | - Elizabeth C. Bourne
- Berlin Center for Genomics in Biodiversity Research, Königin-Luise-Straβe 6-8; Berlin D-14195 Germany
- Department of Ecosystem Research; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301; Berlin 12587 Germany
| | - Mélanie Gerphagnon
- Department of Ecosystem Research; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301; Berlin 12587 Germany
| | - Hans-Peter Grossart
- Department of Experimental Limnology; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Alte Fischerhuette 2; Stechlin D-16775 Germany
- Institute for Biochemistry and Biology, Potsdam University, Maulbeerallee 2; Potsdam D-14476 Germany
| | - Alena S. Gsell
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10; Wageningen PB 6708 The Netherlands
| | - Bas W. Ibelings
- Department F.-A. Forel for Environmental and Aquatic Sciences & Institute for Environmental Sciences; University of Geneva, 66 Boulevard Carl Vogt; Geneva 4 CH 1211 Switzerland
| | - Maiko Kagami
- Department of Environmental Sciences, Faculty of Science; Toho University, 2-2-1, Miyama; Funabashi Chiba 274-8510 Japan
| | - Frithjof C. Küpper
- Oceanlab, University of Aberdeen, Main Street; Newburgh Scotland AB41 6AA UK
| | - Peter M. Letcher
- Department of Biological Sciences; The University of Alabama, 300 Hackberry Lane; Tuscaloosa AL 35487 USA
| | - Adeline Loyau
- Department of System Ecotoxicology; Helmholtz Center for Environmental Research - UFZ, Permoserstrasse 15; 04318 Leipzig Germany
- Department of Conservation Biology; Helmholtz Center for Environmental Research - UFZ, Permoserstrasse 15; Leipzig 04318 Germany
- ECOLAB, Université de Toulouse, CNRS, INPT, UPS; Toulouse France
| | - Takeshi Miki
- Institute of Oceanography; National Taiwan University, No.1 Section 4, Roosevelt Road; Taipei 10617 Taiwan
- Research Center for Environmental Changes; Academia Sinica, No.128 Section 2, Academia Road, Nankang; Taipei 11529 Taiwan
| | - Jens C. Nejstgaard
- Department of Experimental Limnology; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Alte Fischerhuette 2; Stechlin D-16775 Germany
| | - Serena Rasconi
- WasserCluster Lunz - Biological Station; Inter-University Centre for Aquatic Ecosystem Research, A-3293 Lunz am See; Austria
| | - Albert Reñé
- Departament de Biologia Marina i Oceanografia; Institut de Ciències del Mar (CSIC), Pg. Marítim de la Barceloneta, 37-49; Barcelona 08003 Spain
| | - Thomas Rohrlack
- Faculty of Environmental Sciences and Natural Resource Management; Norwegian University of Life Sciences, P.O. Box 5003, NO-1432, Ås; Norway
| | - Keilor Rojas-Jimenez
- Department of Experimental Limnology; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Alte Fischerhuette 2; Stechlin D-16775 Germany
- Universidad Latina de Costa Rica, Campus San Pedro, Apdo; San Jose 10138-1000 Costa Rica
| | - Dirk S. Schmeller
- Department of Conservation Biology; Helmholtz Center for Environmental Research - UFZ, Permoserstrasse 15; Leipzig 04318 Germany
- ECOLAB, Université de Toulouse, CNRS, INPT, UPS; Toulouse France
| | - Bettina Scholz
- BioPol ehf, Einbúastig 2, Skagaströnd 545; Iceland
- Faculty of Natural Resource Sciences; University of Akureyri, Borgir v. Nordurslod; Akureyri IS 600 Iceland
| | - Kensuke Seto
- Department of Environmental Sciences, Faculty of Science; Toho University, 2-2-1, Miyama; Funabashi Chiba 274-8510 Japan
- Sugadaira Montane Research Center; University of Tsukuba, 1278-294, Sugadaira-Kogen; Ueda, Nagano, 386-2204 Japan
| | - Télesphore Sime-Ngando
- Université Clermont Auvergne, UMR CNRS 6023 LMGE, Laboratoire Microorganismes: Génome et Environnement (LMGE); Campus Universitaire des Cézeaux, Impasse Amélie Murat 1, CS 60026, Aubière, 63178 France
| | - Assaf Sukenik
- Kinneret Limnological Laboratory; Israel Oceanographic & Limnological Research, P.O.Box 447; Migdal, 14950 Israel
| | - Dedmer B. Van de Waal
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10; Wageningen PB 6708 The Netherlands
| | - Silke Van den Wyngaert
- Department of Experimental Limnology; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Alte Fischerhuette 2; Stechlin D-16775 Germany
| | - Ellen Van Donk
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10; Wageningen PB 6708 The Netherlands
- Department of Biology; University of Utrecht, Padualaan 8; Utrecht TB 3508 The Netherlands
| | - Justyna Wolinska
- Department of Ecosystem Research; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301; Berlin 12587 Germany
- Institute of Biology, Freie Universität Berlin, Königin-Luise-Straβe 1-3; Berlin, 14195 Germany
| | - Christian Wurzbacher
- Department of Biological and Environmental Sciences; University of Gothenburg, Box 461; Göteborg, 405 30 Sweden
- Gothenburg Global Biodiversity Centre, Box 461; Göteborg, SE-405 30 Sweden
| | - Ramsy Agha
- Department of Ecosystem Research; Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Müggelseedamm 301; Berlin 12587 Germany
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Velthuis M, van Deelen E, van Donk E, Zhang P, Bakker ES. Impact of Temperature and Nutrients on Carbon: Nutrient Tissue Stoichiometry of Submerged Aquatic Plants: An Experiment and Meta-Analysis. FRONTIERS IN PLANT SCIENCE 2017; 8:655. [PMID: 28523005 PMCID: PMC5416745 DOI: 10.3389/fpls.2017.00655] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 04/10/2017] [Indexed: 05/25/2023]
Abstract
Human activity is currently changing our environment rapidly, with predicted temperature increases of 1-5°C over the coming century and increased nitrogen and phosphorus inputs in aquatic ecosystems. In the shallow parts of these ecosystems, submerged aquatic plants enhance water clarity by resource competition with phytoplankton, provide habitat, and serve as a food source for other organisms. The carbon:nutrient stoichiometry of submerged aquatic plants can be affected by changes in both temperature and nutrient availability. We hypothesized that elevated temperature leads to higher carbon:nutrient ratios through enhanced nutrient-use efficiency, while nutrient addition leads to lower carbon:nutrient ratios by the luxurious uptake of nutrients. We addressed these hypotheses with an experimental and a meta-analytical approach. We performed a full-factorial microcosm experiment with the freshwater plant Elodea nuttallii grown at 10, 15, 20, and 25°C on sediment consisting of pond soil/sand mixtures with 100, 50, 25, and 12.5% pond soil. To address the effect of climatic warming and nutrient addition on the carbon:nutrient stoichiometry of submerged freshwater and marine plants we performed a meta-analysis on experimental studies that elevated temperature and/or added nutrients (nitrogen and phosphorus). In the microcosm experiment, C:N ratios of Elodea nuttallii decreased with increasing temperature, and this effect was most pronounced at intermediate nutrient availability. Furthermore, higher nutrient availability led to decreased aboveground C:P ratios. In the meta-analysis, nutrient addition led to a 25, 22, and 16% reduction in aboveground C:N and C:P ratios and belowground C:N ratios, accompanied with increased N content. No consistent effect of elevated temperature on plant stoichiometry could be observed, as very few studies were found on this topic and contrasting results were reported. We conclude that while nutrient addition consistently leads to decreased carbon:nutrient ratios, elevated temperature does not change submerged aquatic plant carbon:nutrient stoichiometry in a consistent manner. This effect is rather dependent on nutrient availability and may be species-specific. As changes in the carbon:nutrient stoichiometry of submerged aquatic plants can impact the transfer of energy to higher trophic levels, these results suggest that eutrophication may enhance plant consumption and decomposition, which could in turn have consequences for carbon sequestration.
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Affiliation(s)
- Mandy Velthuis
- Department of Aquatic Ecology, Netherlands Institute of EcologyWageningen, Netherlands
| | - Emma van Deelen
- Department of Aquatic Ecology, Netherlands Institute of EcologyWageningen, Netherlands
| | - Ellen van Donk
- Department of Aquatic Ecology, Netherlands Institute of EcologyWageningen, Netherlands
- Department of Biology, Utrecht UniversityUtrecht, Netherlands
| | - Peiyu Zhang
- Department of Aquatic Ecology, Netherlands Institute of EcologyWageningen, Netherlands
| | - Elisabeth S. Bakker
- Department of Aquatic Ecology, Netherlands Institute of EcologyWageningen, Netherlands
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Koussoroplis AM, Pincebourde S, Wacker A. Understanding and predicting physiological performance of organisms in fluctuating and multifactorial environments. ECOL MONOGR 2017. [DOI: 10.1002/ecm.1247] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Apostolos-Manuel Koussoroplis
- Theoretical Aquatic Ecology & Ecophysiology; Institute of Biochemistry and Biology; University of Potsdam; Am Neuen Palais 10, Maulbeerallee 2 D-14469 Potsdam Germany
| | - Sylvain Pincebourde
- Faculté des Sciences et Techniques; Institut de Recherche sur la Biologie de l'Insecte (IRBI, CNRS UMR 7261); Université François Rabelais; 37200 Tours France
| | - Alexander Wacker
- Theoretical Aquatic Ecology & Ecophysiology; Institute of Biochemistry and Biology; University of Potsdam; Am Neuen Palais 10, Maulbeerallee 2 D-14469 Potsdam Germany
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49
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Velthuis M, de Senerpont Domis LN, Frenken T, Stephan S, Kazanjian G, Aben R, Hilt S, Kosten S, van Donk E, Van de Waal DB. Warming advances top-down control and reduces producer biomass in a freshwater plankton community. Ecosphere 2017. [DOI: 10.1002/ecs2.1651] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Mandy Velthuis
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); Droevendaalsesteeg 10 6708 PB Wageningen The Netherlands
| | - Lisette N. de Senerpont Domis
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); Droevendaalsesteeg 10 6708 PB Wageningen The Netherlands
- Department of Aquatic Ecology and Water Quality Management; Wageningen University; P.O. Box 47 6708 PB Wageningen The Netherlands
| | - Thijs Frenken
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); Droevendaalsesteeg 10 6708 PB Wageningen The Netherlands
| | - Susanne Stephan
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); Droevendaalsesteeg 10 6708 PB Wageningen The Netherlands
- Department of Experimental Limnology; Leibniz-Institute of Freshwater Ecology and Inland Fisheries; Alte Fischerhütte 2 16775 Stechlin Germany
| | - Garabet Kazanjian
- Department of Ecosystem Research; Leibniz-Institute of Freshwater Ecology and Inland Fisheries; Müggelseedamm 301 12587 Berlin Germany
| | - Ralf Aben
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); Droevendaalsesteeg 10 6708 PB Wageningen The Netherlands
- Department of Aquatic Ecology and Environmental Biology; Institute for Water and Wetland Research; Radboud University Nijmegen; P.O. Box 9010 6500 GL Nijmegen The Netherlands
| | - Sabine Hilt
- Department of Ecosystem Research; Leibniz-Institute of Freshwater Ecology and Inland Fisheries; Müggelseedamm 301 12587 Berlin Germany
| | - Sarian Kosten
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); Droevendaalsesteeg 10 6708 PB Wageningen The Netherlands
- Department of Aquatic Ecology and Environmental Biology; Institute for Water and Wetland Research; Radboud University Nijmegen; P.O. Box 9010 6500 GL Nijmegen The Netherlands
| | - Ellen van Donk
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); Droevendaalsesteeg 10 6708 PB Wageningen The Netherlands
- Department of Ecology and Biodiversity; University of Utrecht; P.O. Box 80.056 3508 TB Utrecht The Netherlands
| | - Dedmer B. Van de Waal
- Department of Aquatic Ecology; Netherlands Institute of Ecology (NIOO-KNAW); Droevendaalsesteeg 10 6708 PB Wageningen The Netherlands
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50
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Turner LM, Alsterberg C, Turner AD, Girisha SK, Rai A, Havenhand JN, Venugopal MN, Karunasagar I, Godhe A. Pathogenic marine microbes influence the effects of climate change on a commercially important tropical bivalve. Sci Rep 2016; 6:32413. [PMID: 27576351 PMCID: PMC5006160 DOI: 10.1038/srep32413] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 08/09/2016] [Indexed: 12/15/2022] Open
Abstract
There is growing evidence that climate change will increase the prevalence of toxic algae and harmful bacteria, which can accumulate in marine bivalves. However, we know little about any possible interactions between exposure to these microorganisms and the effects of climate change on bivalve health, or about how this may affect the bivalve toxin-pathogen load. In mesocosm experiments, mussels, Perna viridis, were subjected to simulated climate change (warming and/or hyposalinity) and exposed to harmful bacteria and/or toxin-producing dinoflagellates. We found significant interactions between climate change and these microbes on metabolic and/or immunobiological function and toxin-pathogen load in mussels. Surprisingly, however, these effects were virtually eliminated when mussels were exposed to both harmful microorganisms simultaneously. This study is the first to examine the effects of climate change on determining mussel toxin-pathogen load in an ecologically relevant, multi-trophic context. The results may have considerable implications for seafood safety.
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Affiliation(s)
- Lucy M Turner
- Department of Marine Sciences, University of Gothenburg, Box 461, SE 405 30 Göteborg, Sweden
| | - Christian Alsterberg
- Department of Marine Sciences, University of Gothenburg, Box 461, SE 405 30 Göteborg, Sweden
| | - Andrew D Turner
- Centre for Environment, Fisheries and Aquaculture Science (CEFAS), Barrack Road, The Nothe, Weymouth, Dorset, DT4 8UB, United Kingdom
| | - S K Girisha
- Department of Fishery Microbiology, Karnataka Veterinary Animal and Fisheries Sciences University, College of Fisheries, Mangalore, 575002, India
| | - Ashwin Rai
- Department of Fishery Microbiology, Karnataka Veterinary Animal and Fisheries Sciences University, College of Fisheries, Mangalore, 575002, India
| | - Jonathan N Havenhand
- Department of Marine Sciences, University of Gothenburg, Box 461, SE 405 30 Göteborg, Sweden
| | - M N Venugopal
- Department of Fishery Microbiology, Karnataka Veterinary Animal and Fisheries Sciences University, College of Fisheries, Mangalore, 575002, India
| | - Indrani Karunasagar
- UNESCO-MIRCEN for Medical and Marine Biotechnology, Nitte University Centre for Science Education and Research (NUCSER), Nitte University, Mangalore 575018, India
| | - Anna Godhe
- Department of Marine Sciences, University of Gothenburg, Box 461, SE 405 30 Göteborg, Sweden
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