Version 1
: Received: 3 May 2017 / Approved: 3 May 2017 / Online: 3 May 2017 (09:39:21 CEST)
How to cite:
Gomes, A.M.D.A.; Marinho, M.M.; Mesquita, M.C.B.; Prestes, A.C.C.; Lürling, M.; Azevedo, S.M.F.D.O.E. Warming and Eutrophication Effects on Phytoplankton Community of Two Tropical Systems with Different Trophic States—An Experimental Approach. Preprints2017, 2017050030. https://doi.org/10.20944/preprints201705.0030.v1
Gomes, A.M.D.A.; Marinho, M.M.; Mesquita, M.C.B.; Prestes, A.C.C.; Lürling, M.; Azevedo, S.M.F.D.O.E. Warming and Eutrophication Effects on Phytoplankton Community of Two Tropical Systems with Different Trophic States—An Experimental Approach. Preprints 2017, 2017050030. https://doi.org/10.20944/preprints201705.0030.v1
Gomes, A.M.D.A.; Marinho, M.M.; Mesquita, M.C.B.; Prestes, A.C.C.; Lürling, M.; Azevedo, S.M.F.D.O.E. Warming and Eutrophication Effects on Phytoplankton Community of Two Tropical Systems with Different Trophic States—An Experimental Approach. Preprints2017, 2017050030. https://doi.org/10.20944/preprints201705.0030.v1
APA Style
Gomes, A.M.D.A., Marinho, M.M., Mesquita, M.C.B., Prestes, A.C.C., Lürling, M., & Azevedo, S.M.F.D.O.E. (2017). Warming and Eutrophication Effects on Phytoplankton Community of Two Tropical Systems with Different Trophic States—An Experimental Approach. Preprints. https://doi.org/10.20944/preprints201705.0030.v1
Chicago/Turabian Style
Gomes, A.M.D.A., Miquel Lürling and Sandra Maria Feliciano De Oliveira E Azevedo. 2017 "Warming and Eutrophication Effects on Phytoplankton Community of Two Tropical Systems with Different Trophic States—An Experimental Approach" Preprints. https://doi.org/10.20944/preprints201705.0030.v1
Abstract
Global warming, as well as europhication are predicted to promote cyanobacterial blooms, but how tropical phytoplankton communities from different trophic state systems respond to temperature variation is less known. To further explore the effect of temperature changes and nutrient addition on phytoplankton communities and to get insight in possible resistance to these effects, we tested the hypothesis that temperature variation will have a stronger effect on cyanobacteria dominance in eutrophic water than in oligo-mesotrophic. Hereto, we conducted an experiment with phytoplankton communities from two aquatic ecosystems differing in trophic state. Water samples from a eutrophic and an oligo-mesotrophic system were collected and incubated in 25 and 30ºC. Also, treatments that received additional surplus N and P were included that served as eutrophication treatments. Temperature variation itself did not promote cyanobacteria in either water from the oligo-mesotrophic or the eutrophic system. However, nutrient enrichment of water from the eutrophic system significantly boosted cyanobacteria, and biomass increased 10 times in both 25ºC and 30ºC treatments. In contrast, eutrophication of water from the oligo-mesotrophic system did not change the relative contribution of phytoplankton groups and response ratios were much lower than those for water from the eutrophic system. Although using a very simple experimental design, the results suggest that in eutrophic systems cyanobacteria dominance can be favoured by further addition of nutrients, independently of a direct temperature effect and that more pristine environments possess some resistance against eutrophication. Since global warming is assumed to intensify eutrophication symptoms indirectly, our study underscores the importance of nutrient control.
Keywords
global warming; nutrients addition; cyanobacterial blooms; eutrophic systems; oligo-mesotrophic systems
Subject
Biology and Life Sciences, Ecology, Evolution, Behavior and Systematics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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