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      Catchment vegetation and temperature mediating trophic interactions and production in plankton communities

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          Abstract

          Climatic factors influence the interactions among trophic levels in an ecosystem in multiple ways. However, whereas most studies focus on single factors in isolation, mainly due to interrelation and correlation among drivers complicating interpretation and analyses, there are still only few studies on how multiple ecosystems respond to climate related factors at the same time. Here, we use a hierarchical Bayesian model with a bioenergetic predator-prey framework to study how different climatic factors affect trophic interactions and production in small Arctic lakes. Natural variation in temperature and catchment land-cover was used as a natural experiment to exemplify how interactions between and production of primary producers (phytoplankton) and grazers (zooplankton) are driven by direct (temperature) and indirect (catchment vegetation) factors, as well as the presence or absence of apex predators (fish). The results show that increased vegetation cover increased phytoplankton growth rate by mediating lake nutrient concentration. At the same time, increased temperature also increased grazing rates by zooplankton. Presence of fish increased zooplankton mortality rates, thus reducing grazing. The Arctic is currently experiencing an increase in both temperature and shrub vegetation cover due to climate change, a trend, which is likely to continue. Our results point towards a possible future general weakening of zooplankton grazing on phytoplankton and greening of arctic lakes with increasing temperatures. At the same time, the impact of the presence of an apex predator indicate considerable local variation in the response. This makes direction and strength of global change impacts difficult to forecast.

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          Most cited references 47

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          Ecological dynamics across the Arctic associated with recent climate change.

          At the close of the Fourth International Polar Year, we take stock of the ecological consequences of recent climate change in the Arctic, focusing on effects at population, community, and ecosystem scales. Despite the buffering effect of landscape heterogeneity, Arctic ecosystems and the trophic relationships that structure them have been severely perturbed. These rapid changes may be a bellwether of changes to come at lower latitudes and have the potential to affect ecosystem services related to natural resources, food production, climate regulation, and cultural integrity. We highlight areas of ecological research that deserve priority as the Arctic continues to warm.
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            A framework for community interactions under climate change.

            Predicting the impacts of climate change on species is one of the biggest challenges that ecologists face. Predictions routinely focus on the direct effects of climate change on individual species, yet interactions between species can strongly influence how climate change affects organisms at every scale by altering their individual fitness, geographic ranges and the structure and dynamics of their community. Failure to incorporate these interactions limits the ability to predict responses of species to climate change. We propose a framework based on ideas from global-change biology, community ecology, and invasion biology that uses community modules to assess how species interactions shape responses to climate change. Copyright (c) 2010 Elsevier Ltd. All rights reserved.
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              The dry weight estimate of biomass in a selection of Cladocera, Copepoda and Rotifera from the plankton, periphyton and benthos of continental waters

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                Author and article information

                Contributors
                Role: Editor
                Journal
                PLoS One
                PLoS ONE
                plos
                plosone
                PLoS ONE
                Public Library of Science (San Francisco, CA USA )
                1932-6203
                17 April 2017
                2017
                : 12
                : 4
                Affiliations
                [1 ]Centre for Biodiversity Dynamics, Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway
                [2 ]Norwegian Institute for Nature Research, Trondheim, Norway
                [3 ]Arctic Research Centre, Department of Bioscience, Aarhus University, Roskilde, Denmark
                Uppsala Universitet, SWEDEN
                Author notes

                Competing Interests: The authors have declared that no competing interests exist.

                • Conceptualization: AGF EBN DKH NMS.

                • Data curation: AGF EBN DKH.

                • Formal analysis: AGF EBN DKH.

                • Funding acquisition: AGF NMS.

                • Investigation: AGF EBN DKH.

                • Methodology: AGF EBN DKH NMS.

                • Project administration: AGF NMS.

                • Validation: AGF EBN.

                • Visualization: AGF EBN DKH.

                • Writing – original draft: AGF EBN DKH NMS.

                • Writing – review & editing: AGF EBN DKH.

                Article
                PONE-D-16-19691
                10.1371/journal.pone.0174904
                5393547
                28414736
                © 2017 Finstad et al

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Page count
                Figures: 2, Tables: 0, Pages: 12
                Product
                Funding
                Funded by: INTERACT for transnational access
                Award ID: 262693
                Award Recipient : Anders Gravbrøt Finstad
                Funded by: funder-id http://dx.doi.org/10.13039/501100005416, Norges Forskningsråd;
                Award Recipient : Anders Gravbrøt Finstad
                Funded by: Norwegian Institute for Nature Research
                Award Recipient :
                Funded by: Norwegian Institute for Nature Research
                Award Recipient :
                Funding was received from INTERACT transnational access (grant agreement 262693) and Aarhus University for logistic support at Zackenberg, the Research Council of Norway and the Norwegian Institute for Nature research strategic institute program on climate change for financial support.
                Categories
                Research Article
                Earth Sciences
                Marine and Aquatic Sciences
                Bodies of Water
                Lakes
                Ecology and Environmental Sciences
                Aquatic Environments
                Freshwater Environments
                Lakes
                Earth Sciences
                Marine and Aquatic Sciences
                Aquatic Environments
                Freshwater Environments
                Lakes
                Biology and Life Sciences
                Organisms
                Animals
                Invertebrates
                Plankton
                Zooplankton
                Biology and Life Sciences
                Organisms
                Plants
                Algae
                Phytoplankton
                Biology and Life Sciences
                Organisms
                Animals
                Invertebrates
                Plankton
                Phytoplankton
                Biology and Life Sciences
                Ecology
                Community Ecology
                Trophic Interactions
                Ecology and Environmental Sciences
                Ecology
                Community Ecology
                Trophic Interactions
                Biology and Life Sciences
                Cell Biology
                Cellular Structures and Organelles
                Chloroplasts
                Chlorophyll
                Biology and Life Sciences
                Cell Biology
                Plant Cell Biology
                Chloroplasts
                Chlorophyll
                Biology and Life Sciences
                Plant Science
                Plant Cell Biology
                Chloroplasts
                Chlorophyll
                Biology and Life Sciences
                Cell Biology
                Cellular Types
                Plant Cells
                Chloroplasts
                Chlorophyll
                Biology and Life Sciences
                Cell Biology
                Plant Cell Biology
                Plant Cells
                Chloroplasts
                Chlorophyll
                Biology and Life Sciences
                Plant Science
                Plant Cell Biology
                Plant Cells
                Chloroplasts
                Chlorophyll
                Physical Sciences
                Materials Science
                Materials by Attribute
                Pigments
                Organic Pigments
                Chlorophyll
                Biology and Life Sciences
                Organisms
                Animals
                Vertebrates
                Fishes
                Freshwater Fish
                People and Places
                Demography
                Death Rates
                Biology and Life Sciences
                Ecology
                Ecosystems
                Ecosystem Functioning
                Ecology and Environmental Sciences
                Ecology
                Ecosystems
                Ecosystem Functioning
                Custom metadata
                Data are available as Darwin Core Archive published on GBIF as dataset "zooplankton and phytoplankton interactions. Northeast Greenland 2013. doi: 10.15468/s7svkr.” URL: http://www.gbif.org/dataset/a855a639-cccb-4286-af92-f7567d74a887.

                Uncategorized

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