1
|
Drought and nutrient pollution produce multiple interactive effects in stream ecosystems. PLoS One 2022; 17:e0269222. [PMID: 35834507 PMCID: PMC9282443 DOI: 10.1371/journal.pone.0269222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 05/17/2022] [Indexed: 11/19/2022] Open
Abstract
Drought and nutrient pollution can affect the dynamics of stream ecosystems in diverse ways. While the individual effects of both stressors are broadly examined in the literature, we still know relatively little about if and how these stressors interact. Here, we performed a mesocosm experiment that explores the compounded effects of seasonal drought via water withdrawals and nutrient pollution (1.0 mg/L of N and 0.1 mg/L of P) on a subset of Ozark stream community fauna and ecosystem processes. We observed biological responses to individual stressors as well as both synergistic and antagonistic stressor interactions. We found that drying negatively affected periphyton assemblages, macroinvertebrate colonization, and leaf litter decomposition in shallow habitats. However, in deep habitats, drought-based increases in fish density caused trophic cascades that released algal communities from grazing pressures; while nutrient enrichment caused bottom-up cascades that influenced periphyton variables and crayfish growth rates. Finally, the combined effects of drought and nutrient enrichment interacted antagonistically to increase survival in longear sunfish; and stressors acted synergistically on grazers causing a trophic cascade that increased periphyton variables. Because stressors can directly and indirectly impact biota—and that the same stressor pairing can act differentially on various portions of the community simultaneously—our broad understanding of individual stressors might not adequately inform our knowledge of multi-stressor systems.
Collapse
|
2
|
Tison-Rosebery J, Leboucher T, Archaimbault V, Belliard J, Carayon D, Ferréol M, Floury M, Jeliazkov A, Tales E, Villeneuve B, Passy SI. Decadal biodiversity trends in rivers reveal recent community rearrangements. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153431. [PMID: 35143793 DOI: 10.1016/j.scitotenv.2022.153431] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 01/21/2022] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
While it is recognized that biodiversity currently declines at a global scale, we still have an incomplete understanding of local biodiversity trends under global change. To address this deficiency, we examined the recent decadal trends in water quality and biodiversity (taxonomic and functional) of key river organisms (diatoms, macroinvertebrates and fish) in France. We implemented regression, RLQ and fourth-corner analyses. Our results showed that nutrient loads tended to decrease, diatom richness tended to decline and macoinvertebrate richness tended to increase. The recovery of sensitive taxa in all three groups suggested a successful outcome of water quality management in France over the past decades. Our study further revealed consistent rearrangements within river communities, with a decrease in the ratio of planktonic to benthic diatoms, and corresponding functional changes in macroinvertebrate and fish trait composition, indicative of a trophic cascade in response to changes in environmental conditions.
Collapse
Affiliation(s)
| | | | - V Archaimbault
- University of Paris Saclay, INRAE, UR HYCAR, F-92160 Antony, France
| | - J Belliard
- University of Paris Saclay, INRAE, UR HYCAR, F-92160 Antony, France
| | - D Carayon
- INRAE, UR ETBX, F-33612 Cestas, France
| | - M Ferréol
- INRAE, UR RIVERLY, F-69625 Villeurbanne, France
| | - M Floury
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023 LEHNA, F-69622, Villeurbanne, France
| | - A Jeliazkov
- University of Paris Saclay, INRAE, UR HYCAR, F-92160 Antony, France
| | - E Tales
- University of Paris Saclay, INRAE, UR HYCAR, F-92160 Antony, France
| | | | - S I Passy
- University of Texas at Arlington, Department of Biology, TX 76019, Arlington, USA
| |
Collapse
|
3
|
DeNicola DM, McNair JN, Suh J. A stochastic model of epilithic algal succession and patch dynamics in streams. Ecosphere 2021. [DOI: 10.1002/ecs2.3566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Dean M. DeNicola
- Department of Biology Slippery Rock University Slippery Rock Pennsylvania 16057 USA
| | - James N. McNair
- Robert B. Annis Water Resources Institute Grand Valley State University Muskegon Michigan 49441 USA
| | - Jiyeon Suh
- Department of Mathematics Grand Valley State University Allendale Michigan 49401 USA
| |
Collapse
|
4
|
Hofmann P, Clark A, Hoffmann P, Chatzinotas A, Harpole WS, Dunker S. Beyond nitrogen: phosphorus - estimating the minimum niche dimensionality for resource competition between phytoplankton. Ecol Lett 2021; 24:761-771. [PMID: 33590958 DOI: 10.1111/ele.13695] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 12/15/2020] [Accepted: 12/21/2020] [Indexed: 01/06/2023]
Abstract
The niche dimensionality required for coexistence is often discussed in terms of the number of limiting resources. N and P limitation are benchmarks for studying phytoplankton interactions. However, it is generally agreed that limitation by small numbers of resources cannot explain the high phytoplankton diversity observed in nature. Here, we parameterised resource competition models using experimental data for six phytoplankton species grown in monoculture with nine potential limiting resources. We tested predicted species biomass from these models against observations in two-species experimental mixtures. Uptake rates were similar across species, following the classic Redfield ratio. Model accuracy levelled out at around three to five resources suggesting the minimum dimensionality of this system. The models included the resources Fe, Mg, Na and S. Models including only N and P always performed poorly. These results suggest that high-dimensional information about resource limitation despite stoichiometric constraints may be needed to accurately predict community assembly.
Collapse
Affiliation(s)
- Peter Hofmann
- Department of Physiological Diversity, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, Leipzig, 04318, Germany.,Department of Environmental Microbiology, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, Leipzig, 04318, Germany
| | - Adam Clark
- Department of Physiological Diversity, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, Leipzig, 04318, Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, 04103, Germany.,Institute of Biology, University of Graz, Holteigasse 6, Graz, 8010, Austria
| | - Petra Hoffmann
- Department of Physiological Diversity, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, Leipzig, 04318, Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, 04103, Germany
| | - Antonis Chatzinotas
- Department of Environmental Microbiology, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, Leipzig, 04318, Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, 04103, Germany.,Institute of Biology, University Leipzig, Talstr.33, Leipzig, 04103, Germany
| | - W Stanley Harpole
- Department of Physiological Diversity, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, Leipzig, 04318, Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, 04103, Germany.,Martin Luther University Halle-Wittenberg, Am Kirchtor 1, Halle (Saale), 06108, Germany
| | - Susanne Dunker
- Department of Physiological Diversity, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, Leipzig, 04318, Germany.,German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, Leipzig, 04103, Germany
| |
Collapse
|
5
|
Furey PC, Lee SS, Clemans DL. Substratum-associated microbiota. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:1629-1648. [PMID: 33463854 DOI: 10.1002/wer.1410] [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: 04/30/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 06/12/2023]
Abstract
Highlights of new, interesting, and emerging research findings on substratum-associated microbiota covered from a survey of 2019 literature from primarily freshwaters provide insight into research trends of interest to the Water Environment Federation and others interested in benthic, aquatic environments. Coverage of topics on bottom-associated or attached algae and cyanobacteria, though not comprehensive, includes new methods, taxa new-to-science, nutrient dynamics, auto- and heterotrophic interactions, grazers, bioassessment, herbicides and other pollutants, metal contaminants, and nuisance, and bloom-forming and harmful algae. Coverage of bacteria, also not comprehensive, focuses on the ecology of benthic biofilms and microbial communities, along with the ecology of microbes like Caulobacter crescentus, Rhodobacter, and other freshwater microbial species. Bacterial topics covered also include metagenomics and metatranscriptomics, toxins and pollutants, bacterial pathogens and bacteriophages, and bacterial physiology. Readers may use this literature review to learn about or renew their interest in the recent advances and discoveries regarding substratum-associated microbiota. PRACTITIONER POINTS: This review of literature from 2019 on substratum-associated microbiota presents highlights of findings on algae, cyanobacteria, and bacteria from primarily freshwaters. Coverage of algae and cyanobacteria includes findings on new methods, taxa new to science, nutrient dynamics, auto- and heterotrophic interactions, grazers, bioassessment, herbicides and other pollutants, metal contaminants, and nuisance, bloom-forming and harmful algae. Coverage of bacteria includes findings on ecology of benthic biofilms and microbial communities, the ecology of microbes, metagenomics and metatranscriptomics, toxins and pollutants, bacterial pathogens and bacteriophages, and bacterial physiology. Highlights of new, noteworthy and emerging topics build on those from 2018 and will be of relevance to the Water Environment Federation and others interested in benthic, aquatic environments.
Collapse
Affiliation(s)
- Paula C Furey
- Department Biology, St. Catherine University, St. Paul, Minnesota, USA
| | - Sylvia S Lee
- Office of Research and Development, U.S. Environmental Protection Agency, Washington, District of Columbia, USA
| | - Daniel L Clemans
- Department of Biology, Eastern Michigan University, Ypsilanti, Michigan, USA
| |
Collapse
|