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Belkinova D, Stoianova D, Beshkova M, Kazakov S, Stoyanov P, Mladenov R. Current status and prognosis of Raphidiopsis raciborskii distribution in Bulgaria as part of the southeastern region of Europe. HARMFUL ALGAE 2024; 132:102578. [PMID: 38331543 DOI: 10.1016/j.hal.2024.102578] [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: 03/30/2023] [Revised: 11/21/2023] [Accepted: 01/09/2024] [Indexed: 02/10/2024]
Abstract
The cyanobacterial species Raphidiopsis raciborskii (Wołoszyńska) Aguilera et al. has a high invasiveness potential, which in less than a century leads to its cosmopolitan spread. In the temperate climate of Europe, R. raciborskii has been reported in many countries, but there is still a lack of detailed information about the current status of its distribution in lakes of Bulgaria, as a part of the southeastern range of its spread in Europe. We investigated the distribution of the species using data on the phytoplankton of 122 lakes surveyed during 13-years period (2009-2022). The species was found in 33 lakes (up to 324 m asl), and 14 new localities were registered during the studied period. The results reveal that the number of lakes with the presence of R. raciborskii (27 % of all research lakes) and its contribution to the total phytoplankton biomass, has increased significantly over the last decade. The species has successfully adapted and dominated the phytoplankton in 9 lakes, forming a bloom in 8 of them. The dominant position of R. raciborskii causes loss of species and functional diversity of phytoplankton and displaces the native bloom-forming cyanobacteria. Lakes with and without the species were compared based on the available data on bioclimatic and local environmental variables. Statistically significant differences were established with respect to water transparency, conductivity, maximum depth and maximum air temperature in the warmest month. Species distribution models (SDMs) were used to identify lakes in high risk of future invasion by R. raciborskii. The results of the SDMs implementation confirmed the high maximum air temperature and low water transparency to be important predictors of the occurrence of R. raciborskii in freshwater lakes in Bulgaria. In the areas with high summer temperatures the most suitable for R. raciborskii development were found to be shallow polymictic or medium deep lakes with small surface area and low water transparency. In areas with a suitable climate, the large, deep reservoirs with high transparency as well as macrophyte dominated lakes have a low probability of occurrence of R. raciborskii. Future colonization of lakes above 500 m asl (but most likely below 700 m asl) is also possible, especially in the conditions of global warming. SDMs account for climatic and biogeographic differences of lakes and could help in elucidating the underlying factors that control the occurrence and adaptation of R. raciborskii in a given area.
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Affiliation(s)
- Detelina Belkinova
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria; Department of Botany and Biological education, Faculty of Biology, University of Plovdiv "Paisii Hilendarski", Bulgaria
| | - Desislava Stoianova
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria.
| | - Mihaela Beshkova
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Stefan Kazakov
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Plamen Stoyanov
- Department of Botany and Biological education, Faculty of Biology, University of Plovdiv "Paisii Hilendarski", Bulgaria; Department of Bioorganic Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, Bulgaria
| | - Rumen Mladenov
- Department of Botany and Biological education, Faculty of Biology, University of Plovdiv "Paisii Hilendarski", Bulgaria; Department of Bioorganic Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, Bulgaria
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Xu Y, Wang L, Tang Q, Naselli-Flores L, Jeppesen E, Han BP. The Relationship Between Phytoplankton Diversity and Ecosystem Functioning Changes with Disturbance Regimes in Tropical Reservoirs. Ecosystems 2022. [DOI: 10.1007/s10021-022-00791-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Zhou Q, Zhang Y, Tao J, Ye L, Wang H, Shan K, Jeppesen E, Song L. Water depth and land-use intensity indirectly determine phytoplankton functional diversity and further regulate resource use efficiency at a multi-lake scale. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 834:155303. [PMID: 35447191 DOI: 10.1016/j.scitotenv.2022.155303] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 04/11/2022] [Accepted: 04/11/2022] [Indexed: 06/14/2023]
Abstract
Biodiversity-ecosystem functioning relationships under multiple pressures have recently been the subject of broad studies. For the key primary producer in aquatic ecosystems, phytoplankton, several studies have focused on trait-based functional diversity (FD) and the related functioning (e.g., resource use efficiency, RUE), and their linkages. However, investigations of the effects of environmental factors at different levels (e.g., land use, lake morphometry, climate and nutrients) on FD and RUE are sparse. We developed a data-driven-model framework to simultaneously elucidate the effects of multiple drivers on FD (functional diversity based on dendrograms, FDc and functional richness, FRic) and RUE (of nitrogen and phosphorus) of phytoplankton based on data from 68 Yunnan-Guizhou Plateau lakes, Southwest China. We found that the concentration of total phosphorus, which is mainly affected by land-use intensity and influenced by water depth, was the primary (positive) driver of changes in both FDc and FRic, while RUE was mainly explained by phytoplankton FD (i.e., FRic). These results indicate that water depth and land-use intensity influence indirectly phytoplankton FD and further regulate RUE. Moreover, nonlinear correlations of RUE with FRic were found, which may be caused by interspecific competition and niche differentiation of the phytoplankton community related to nutrient levels. Our finding may help managers to set trade-off targets between FD and RUE in lake ecosystems except for extremely polluted ones, in which the thresholds derived from the Bayesian network, of total phosphorus, total nitrogen and land-use intensity were approximately 0.04 mg/L, 0.50 mg/L and 244 (unitless), respectively. The probability of meeting the RUE objectives was lower in shallow lakes than in deep lakes, but for FRic the opposite was observed.
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Affiliation(s)
- Qichao Zhou
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China; Yunnan Key Laboratory of Pollution Process and Management of Plateau Lake-Watershed, Yunnan Research Academy of Eco-environmental Sciences, Kunming 650034, China.
| | - Yun Zhang
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China
| | - Juan Tao
- Yunnan Key Laboratory of International Rivers and Transboundary Eco-security, Institute of International Rivers and Eco-Security, Yunnan University, Kunming 650500, China
| | - Lin Ye
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Haijun Wang
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China
| | - Kun Shan
- Chongqing Key Laboratory of Big Data and Intelligent Computing, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.
| | - Erik Jeppesen
- Department of Ecoscience, Aarhus University, Silkeborg 8600, Denmark; 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, Mersin, Turkey
| | - Lirong Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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Borics G, Abonyi A, Salmaso N, Ptacnik R. Freshwater phytoplankton diversity: models, drivers and implications for ecosystem properties. HYDROBIOLOGIA 2021; 848:53-75. [PMID: 32836348 PMCID: PMC7334633 DOI: 10.1007/s10750-020-04332-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/09/2020] [Accepted: 06/13/2020] [Indexed: 05/20/2023]
Abstract
Our understanding on phytoplankton diversity has largely been progressing since the publication of Hutchinson on the paradox of the plankton. In this paper, we summarise some major steps in phytoplankton ecology in the context of mechanisms underlying phytoplankton diversity. Here, we provide a framework for phytoplankton community assembly and an overview of measures on taxonomic and functional diversity. We show how ecological theories on species competition together with modelling approaches and laboratory experiments helped understand species coexistence and maintenance of diversity in phytoplankton. The non-equilibrium nature of phytoplankton and the role of disturbances in shaping diversity are also discussed. Furthermore, we discuss the role of water body size, productivity of habitats and temperature on phytoplankton species richness, and how diversity may affect the functioning of lake ecosystems. At last, we give an insight into molecular tools that have emerged in the last decades and argue how it has broadened our perspective on microbial diversity. Besides historical backgrounds, some critical comments have also been made.
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Affiliation(s)
- Gábor Borics
- Department of Tisza Research, Centre for Ecological Research, Danube Research Institute, Bem tér 18/c, 4026 Debrecen, Hungary
- GINOP Sustainable Ecosystems Group, Centre for Ecological Research, Klebelsberg Kuno u. 3, 8237 Tihany, Hungary
| | - András Abonyi
- Centre for Ecological Research, Institute of Ecology and Botany, Alkotmány u. 2-4, 2163 Vácrátót, Hungary
- WasserCluster Lunz – Biologische Station GmbH, Dr. Carl Kupelwieser-Promenade 5, 3293 Lunz am See, Austria
| | - Nico Salmaso
- Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1, 38010 San Michele all’Adige, Italy
| | - Robert Ptacnik
- WasserCluster Lunz – Biologische Station GmbH, Dr. Carl Kupelwieser-Promenade 5, 3293 Lunz am See, Austria
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Borics G, B-Béres V, Bácsi I, Lukács BA, T-Krasznai E, Botta-Dukát Z, Várbíró G. Trait convergence and trait divergence in lake phytoplankton reflect community assembly rules. Sci Rep 2020; 10:19599. [PMID: 33177646 PMCID: PMC7658209 DOI: 10.1038/s41598-020-76645-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 10/27/2020] [Indexed: 02/08/2023] Open
Abstract
Environmental filtering and limiting similarity are those locally acting processes that influence community structure. These mechanisms acting on the traits of species result in trait convergence or divergence within the communities. The role of these processes might change along environmental gradients, and it has been conceptualised in the stress-dominance hypothesis, which predicts that the relative importance of environmental filtering increases and competition decreases with increasing environmental stress. Analysing trait convergence and divergence in lake phytoplankton assemblages, we studied how the concepts of ‘limiting similarity’ versus ‘environmental filtering’ can be applied to these microscopic aquatic communities, and how they support or contradict the stress-dominance hypothesis. Using a null model approach, we investigated the divergence and convergence of phytoplankton traits along environmental gradients represented by canonical axes of an RDA. We used Rao’s quadratic entropy as a measure of functional diversity and calculated effect size (ES) values for each sample. Negative ES values refer to trait convergence, i.e., to the higher probability of the environmental filtering in community assembly, while positive values indicate trait divergence, stressing the importance of limiting similarity (niche partitioning), that is, the competition between the phytoplankters. Our results revealed that limiting similarity and environmental filtering may operate simultaneously in phytoplankton communities, but these assembly mechanisms influenced the distribution of phytoplankton traits differently, and the effects show considerable changes along with the studied scales. Studying the changes of ES values along with the various scales, our results partly supported the stress-dominance hypothesis, which predicts that the relative importance of environmental filtering increases and competition decreases with increasing environmental stress.
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Affiliation(s)
- Gábor Borics
- Department of Tisza Research, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary
| | - Viktória B-Béres
- Department of Tisza Research, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary
| | - István Bácsi
- Department of Hydrobiology, University of Debrecen, P.O. Box 57, 4010, Debrecen, Hungary
| | - Balázs A Lukács
- Wetland Ecology Research Group, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary
| | - E T-Krasznai
- Department of Tisza Research, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary
| | - Zoltán Botta-Dukát
- Institute of Ecology and Botany, Centre for Ecological Research, 2-4. Alkotmány Str., 2163, Vácrátót, Hungary
| | - Gábor Várbíró
- Department of Tisza Research, Danube Research Institute, Centre for Ecological Research, 18/c. Bem square, 4026, Debrecen, Hungary.
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Tao Y, Zhou XB, Zhang J, Yin BF, Wu N, Zhang YM. Humped Relationship between Herbaceous Species Richness and Biomass Reveals a Potential for Increasing Productivity in a Temperate Desert in Central Asia. POLISH JOURNAL OF ECOLOGY 2020. [DOI: 10.3161/15052249pje2020.68.1.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Ye Tao
- CAS Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, South Beijing Road 818, Urumqi, Xinjiang 830011, China
| | - Xiao-Bing Zhou
- CAS Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, South Beijing Road 818, Urumqi, Xinjiang 830011, China
| | - Jing Zhang
- CAS Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, South Beijing Road 818, Urumqi, Xinjiang 830011, China
| | - Ben-Feng Yin
- CAS Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, South Beijing Road 818, Urumqi, Xinjiang 830011, China
| | - Nan Wu
- CAS Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, South Beijing Road 818, Urumqi, Xinjiang 830011, China
| | - Yuan-Ming Zhang
- CAS Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, South Beijing Road 818, Urumqi, Xinjiang 830011, China
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7
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Wang H, Zhao D, Chen L, Giesy JP, Zhang W, Yuan C, Ni L, Shen H, Xie P. Light, but Not Nutrients, Drives Seasonal Congruence of Taxonomic and Functional Diversity of Phytoplankton in a Eutrophic Highland Lake in China. FRONTIERS IN PLANT SCIENCE 2020; 11:179. [PMID: 32210990 PMCID: PMC7067047 DOI: 10.3389/fpls.2020.00179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 02/06/2020] [Indexed: 06/10/2023]
Abstract
Information on temporal dynamics of phytoplankton communities and their responses to environmental factors can provide insights into mechanisms driving succession of phytoplankton communities that is useful in programs to manage and or remediate undesirable assemblages. Populations of phytoplankton can be controlled by bottom-up factors such as nutrients and temperature or top-down such as predation by zooplankton. Traditionally, taxonomic diversity based on morphologies has been the measure used for analysis of responses to environmental factors. Recently, according to functional groupings, including functional groups (FG), morpho-FG (MFG), and morphology-based FG (MBFG), functional diversity has been used to represent functional aspects of phytoplankton communities. However, to what extent these taxonomic and functional groupings are congruent at seasonal time-scales and the main environmental factors, which drive succession, have remained less studied. Here, we analyzed absolute and relative proportions of a phytoplankton community during a 3-year period in Lake Erhai, a eutrophic highland lake in China. Alpha diversity and beta diversity, as measured by Shannon-Wiener and Bray-Curtis indices of taxonomic grouping and three functional groupings (FG, MFG, and MBFG) were applied to investigate environmental factors determining diversity. Significant, positive relationships were observed between taxonomic diversity and functional diversity that were strongly linked through seasons. In order to exclude the influence of dominant species' tolerance to extreme environments, the dominant species were excluded one by one, and the results showed that residual communities still exhibited similar patterns of succession. This synchronous temporal pattern was not principally driven by the dominant genera (Microcystis, Psephonema, and Mougeotia). Instead, the entire phytoplankton community assemblages were important in the pattern. Most diversity indices of taxonomic and functional groupings were significantly correlated with solar irradiance, but not nutrient concentrations. Because the lake is eutrophic and there were already sufficient nutrients available, additional nutrients had little effect on seasonal taxonomic and functional diversity of phytoplankton in Lake Erhai.
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Affiliation(s)
- Huan Wang
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Dandan Zhao
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- Guangzhou Chengyi Aquaculture Co., Ltd., Guangzhou, China
| | - Liang Chen
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Faculty of Water Resources and Hydroelectric Engineering, Xi'an University of Technology, Xi'an, China
| | - John P. Giesy
- Department of Veterinary Biomedical Sciences and Toxicology Centre, University of Saskatchewan, Saskatoon, SK, Canada
- Department of Environmental Science, Baylor University, Waco, TX, United States
| | - Weizhen Zhang
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
| | - Changbo Yuan
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Leyi Ni
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Hong Shen
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Ping Xie
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, China
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Patterns in Alpha and Beta Phytoplankton Diversity along a Conductivity Gradient in Coastal Mediterranean Lagoons. DIVERSITY-BASEL 2020. [DOI: 10.3390/d12010038] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Understanding the diversity patterns of phytoplankton assemblages in coastal lagoons is clearly important for water management. In this study, we explored alpha and beta diversity patterns in phytoplankton communities across five Mediterranean lagoons hydrologically connected to Vistonikos Gulf. We examined the phytoplankton community composition and biomass on a monthly basis from November 2018 to October 2019. For this, water samples were collected from seven inshore, brackish and coastal waters, sampling sites covering a wide range of conductivity. We found significant spatial and temporal differences in phytoplankton alpha diversity and in phytoplankton biomass metrics explained by the high variation of conductivity. Evenness remained low throughout the study period, reflecting significant dominance of several phytoplankton blooms. Harmful algal blooms of Prorocentrum minimum, Alexandrium sp., Rhizosolenia setigera and Cylindrotheca closterium occurred. The system’s species pool was characterized by relatively high phytoplankton beta diversity (average ~0.7) resulting from high temporal species turnover (90%). Overall, alpha and beta diversity components were indicative of rather heterogeneous phytoplankton communities which were associated with the high differences in conductivity among the sampling sites.
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Stenger‐Kovács C, Lengyel E, Buczkó K, Padisák J, Korponai J. Trait-based diatom functional diversity as an appropriate tool for understanding the effects of environmental changes in soda pans. Ecol Evol 2020; 10:320-335. [PMID: 31993118 PMCID: PMC6972871 DOI: 10.1002/ece3.5897] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 12/30/2022] Open
Abstract
Saline lakes, among the most seriously endangered ecosystems, are threatened due to climate change and human activities. One valuable feature of these environments is that they constitute areas of high biodiversity. Ecologists are, therefore, under great pressure to improve their understanding of the effects of natural and anthropogenic disturbances on the biodiversity of saline lakes. In this study, a total of 257 samples from 32 soda pans in Central Europe between 2006 and 2015 were examined. The effects of environmental variables and of geographical and limnoecological factors on functional diversity were analyzed. Furthermore, the explanatory power of the trait-based approach was assessed, and the applicability of the indices for biomonitoring purposes was determined. It was found that low habitat heterogeneity and harsh environments lead to the selection of a small number of suitable traits, and consequently, to a naturally low level of functional diversity. Anthropogenic activities enhance diversity at functional level due to the shift toward freshwater characteristics. On the regional scale, the effects of the region and status (natural, degraded, reconstructed) on diatom functional diversity were significant and more pronounced than that of the environmental and other limnoecological factors. The degree of variance found in functional diversity ascribed to environmental variables is five times greater in the case of the application of a trait-based approach, than when a taxonomic one is employed in the literature. Each of the tested functional diversity indices was sensitive to the most important environmental variables. Furthermore, these were type-specific and proved to be more complex indicators than taxonomic metrics. It is possible to suggest four functional diversity indices (FGR, FRic, FDis, and FDiv) which emphasize their independence from substrate and seasonal variations for ecological status assessment and conservation planning.
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Affiliation(s)
| | - Edina Lengyel
- Department of LimnologyUniversity of PannoniaVeszprémHungary
| | - Krisztina Buczkó
- Department of BotanyHungarian Natural History MuseumBudapestHungary
- MTA Centre for Ecological ResearchDanube Research InstituteBudapestHungary
| | - Judit Padisák
- Department of LimnologyUniversity of PannoniaVeszprémHungary
| | - János Korponai
- Department of Water Supply and SewerageFaculty of Water ScienceNational University of Public ServiceBajaHungary
- Department of Environmental SciencesSapientia Hungarian University of TransylvaniaCluj‐NapocaRomania
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Bolgovics Á, B-Béres V, Várbíró G, Krasznai-K EÁ, Ács É, Kiss KT, Borics G. Groups of small lakes maintain larger microalgal diversity than large ones. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 678:162-172. [PMID: 31075582 DOI: 10.1016/j.scitotenv.2019.04.309] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/19/2019] [Accepted: 04/20/2019] [Indexed: 06/09/2023]
Abstract
The question of whether one large, continuous area or many smaller habitats maintain more species is one of the most relevant questions in conservation ecology, and it is referred to as the SLOSS (Single Large Or Several Small) dilemma in the literature. This question has not yet been raised in the case of microscopic organisms, therefore we investigated whether or not the SLOSS dilemma could apply to phytoplankton and benthic diatom metacommunities. Benthic diatom and phytoplankton diversity in pools and ponds of different sizes (ranging between 10-2-107 m2) was studied. Species richness of water bodies belonging to neighbouring size categories was compared step by step across the whole size gradient. With the exception of the 104-105 m2 and 105-106 m2 size categories, where phytoplankton and benthic diatom richness values of the SL water bodies were higher than that of the SS ones, findings showed that the diversity of several smaller (SS) sized waters was higher than that in single large water bodies (SL) throughout the whole studied size range. The proportion of the various functional groups of algae, including both the benthic diatoms and phytoplankton, showed remarkable changes from the smaller water bodies to large sized ones.
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Affiliation(s)
- Ágnes Bolgovics
- MTA Centre for Ecological Research, Danube Research Institute, Tisza River Department, H-4026 Debrecen, Bem tér 18/c, Hungary.
| | - Viktória B-Béres
- MTA Centre for Ecological Research, Danube Research Institute, Tisza River Department, H-4026 Debrecen, Bem tér 18/c, Hungary; MTA Centre for Ecological Research, Sustainable Ecosystems Group, H-8237 Tihany, Klebelsberg Kuno u. 3, Hungary; MTA-DE Lendület Functional and Restoration Ecology Research Group, H-4032 Debrecen, Egyetem tér 1, Hungary
| | - Gábor Várbíró
- MTA Centre for Ecological Research, Danube Research Institute, Tisza River Department, H-4026 Debrecen, Bem tér 18/c, Hungary; MTA Centre for Ecological Research, Sustainable Ecosystems Group, H-8237 Tihany, Klebelsberg Kuno u. 3, Hungary
| | - Eszter Ágnes Krasznai-K
- MTA Centre for Ecological Research, Danube Research Institute, Tisza River Department, H-4026 Debrecen, Bem tér 18/c, Hungary
| | - Éva Ács
- MTA Centre for Ecological Research, Danube Research Institute, H-1113 Budapest, Karolina út 29, Hungary
| | - Keve Tihamér Kiss
- MTA Centre for Ecological Research, Danube Research Institute, H-1113 Budapest, Karolina út 29, Hungary
| | - Gábor Borics
- MTA Centre for Ecological Research, Danube Research Institute, Tisza River Department, H-4026 Debrecen, Bem tér 18/c, Hungary; MTA Centre for Ecological Research, Sustainable Ecosystems Group, H-8237 Tihany, Klebelsberg Kuno u. 3, Hungary
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11
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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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12
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13
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Montagna M, Berruti A, Bianciotto V, Cremonesi P, Giannico R, Gusmeroli F, Lumini E, Pierce S, Pizzi F, Turri F, Gandini G. Differential biodiversity responses between kingdoms (plants, fungi, bacteria and metazoa) along an Alpine succession gradient. Mol Ecol 2018; 27:3671-3685. [DOI: 10.1111/mec.14817] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 06/05/2018] [Accepted: 07/01/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Matteo Montagna
- Dipartimento di Scienze Agrarie e Ambientali; Università degli Studi di Milano; Milan Italy
| | - Andrea Berruti
- Istituto per la Protezione Sostenibile delle Piante - Consiglio Nazionale delle Ricerche; Torino Italy
| | - Valeria Bianciotto
- Istituto per la Protezione Sostenibile delle Piante - Consiglio Nazionale delle Ricerche; Torino Italy
| | - Paola Cremonesi
- Istituto di Biologia e Biotecnologia Agraria - Consiglio Nazionale delle Ricerche (CNR IBBA); Lodi Italy
| | - Riccardo Giannico
- Istituto di Biologia e Biotecnologia Agraria - Consiglio Nazionale delle Ricerche (CNR IBBA); Lodi Italy
| | - Fausto Gusmeroli
- Fondazione Dott. Piero Fojanini di Studi Superiori; Sondrio Italy
| | - Erica Lumini
- Istituto per la Protezione Sostenibile delle Piante - Consiglio Nazionale delle Ricerche; Torino Italy
| | - Simon Pierce
- Dipartimento di Scienze Agrarie e Ambientali; Università degli Studi di Milano; Milan Italy
| | - Flavia Pizzi
- Istituto di Biologia e Biotecnologia Agraria - Consiglio Nazionale delle Ricerche (CNR IBBA); Lodi Italy
| | - Federica Turri
- Istituto di Biologia e Biotecnologia Agraria - Consiglio Nazionale delle Ricerche (CNR IBBA); Lodi Italy
| | - Gustavo Gandini
- Istituto di Biologia e Biotecnologia Agraria - Consiglio Nazionale delle Ricerche (CNR IBBA); Lodi Italy
- Dipartimento di Medicina Veterinaria; Università degli Studi di Milano; Milan Italy
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14
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Deacon AE, Jones FAM, Magurran AE. Gradients in predation risk in a tropical river system. Curr Zool 2018; 64:213-221. [PMID: 30402062 PMCID: PMC5905555 DOI: 10.1093/cz/zoy004] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 01/05/2018] [Indexed: 01/30/2023] Open
Abstract
The importance of predation risk as a key driver of evolutionary change is exemplified by the Northern Range in Trinidad, where research on guppies living in multiple parallel streams has provided invaluable insights into the process of evolution by natural selection. Although Trinidadian guppies are now a textbook example of evolution in action, studies have generally categorized predation as a dichotomous variable, representing high or low risk. Yet, ecologists appreciate that community structure and the attendant predation risk vary substantially over space and time. Here, we use data from a longitudinal study of fish assemblages at 16 different sites in the Northern Range to quantify temporal and spatial variation in predation risk. Specifically we ask: 1) Is there evidence for a gradient in predation risk? 2) Does the ranking of sites (by risk) change with the definition of the predator community (in terms of species composition and abundance currency), and 3) Are site rankings consistent over time? We find compelling evidence that sites lie along a continuum of risk. However, site rankings along this gradient depend on how predation is quantified in terms of the species considered to be predators and the abundance currency is used. Nonetheless, for a given categorization and currency, rankings are relatively consistent over time. Our study suggests that consideration of predation gradients will lead to a more nuanced understanding of the role of predation risk in behavioral and evolutionary ecology. It also emphasizes the need to justify and report the definition of predation risk being used.
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Affiliation(s)
- Amy E Deacon
- Department of Life Sciences, The University of the West Indies, St Augustine, Trinidad and Tobago
- School of Biology, University of St Andrews, Fife, KY16 9TH Scotland, UK
| | - Faith A M Jones
- School of Biology, University of St Andrews, Fife, KY16 9TH Scotland, UK
| | - Anne E Magurran
- School of Biology, University of St Andrews, Fife, KY16 9TH Scotland, UK
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15
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Demura M, Yoshida M, Yokoyama A, Ito J, Kobayashi H, Kayano S, Tamagawa Y, Watanobe M, Date N, Osaka M, Kawarada M, Watanabe T, Inouye I, Watanabe MM. Biomass productivity of native algal communities in Minamisoma city, Fukushima Prefecture, Japan. ALGAL RES 2018. [DOI: 10.1016/j.algal.2017.11.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Várbíró G, Görgényi J, Tóthmérész B, Padisák J, Hajnal É, Borics G. Functional redundancy modifies species-area relationship for freshwater phytoplankton. Ecol Evol 2017; 7:9905-9913. [PMID: 29238524 PMCID: PMC5723584 DOI: 10.1002/ece3.3512] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 08/25/2017] [Accepted: 09/16/2017] [Indexed: 12/03/2022] Open
Abstract
Although species–area relationship (SAR) is among the most extensively studied patterns in ecology, studies on aquatic and/or microbial systems are seriously underrepresented in the literature. We tested the algal SAR in lakes, pools and ponds of various sizes (10−2–108 m2) and similar hydromorphological and trophic characteristics using species‐specific data and functional groups. Besides the expectation that species richness increases monotonously with area, we found a right‐skewed hump‐shaped relationship between the area and phytoplankton species richness. Functional richness however did not show such distortion. Differences between the area dependence of species and functional richness indicate that functional redundancy is responsible for the unusual hump‐backed SAR. We demonstrated that the Small Island Effect, which is a characteristic for macroscopic SARs can also be observed for the phytoplankton. Our results imply a so‐called large lake effect, which means that in case of large lakes, wind‐induced mixing acts strongly against the habitat diversity and development of phytoplankton patchiness and finally results in lower phytoplankton species richness in the pelagial. High functional redundancy of the groups that prefer small‐scale heterogeneity of the habitats is responsible for the unusual humpback relationship. The results lead us to conclude that although the mechanisms that regulate the richness of both microbial communities and communities of macroscopic organisms are similar, their importance can be different in micro‐ and macroscales.
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Affiliation(s)
- Gábor Várbíró
- Department of Tisza Research MTA Centre for Ecological Research Debrecen Hungary.,MTA Centre for Ecological Research GINOP Sustainable Ecosystems Group Tihany Hungary
| | - Judit Görgényi
- Department of Tisza Research MTA Centre for Ecological Research Debrecen Hungary.,MTA Centre for Ecological Research GINOP Sustainable Ecosystems Group Tihany Hungary
| | - Béla Tóthmérész
- MTA-DE Biodiversity and Ecosystem Services Research Group Debrecen Hungary
| | - Judit Padisák
- Department of Limnology University of Pannonia Veszprém Hungary.,MTA-PE Limnoecology Research Group Veszprém Hungary
| | - Éva Hajnal
- Alba Regia University Center Székesfehérvár Óbuda University Székesfehérvár Hungary
| | - Gábor Borics
- Department of Tisza Research MTA Centre for Ecological Research Debrecen Hungary.,MTA Centre for Ecological Research GINOP Sustainable Ecosystems Group Tihany Hungary
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