Plankton community responses in Pampean lowland streams linked to intensive agricultural pollution

Lowland lotic ecosystems are under increasing pollution pressure. In this study, we analyzed the plankton community responses to environmental changes, including natural ones and those related to anthropogenic activities, to finally determine their optimums in natural conditions. In four dates, seve...

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Autores principales:	D. Frau, M.F. Gutierrez, L. Regaldo, M. Saigo, M. Licursi
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Metals Pesticides Organic pollution Eutrophication Lotic ecosystems Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d54c6e177f0a4bbbb1d57c0a8adc3126
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spelling	oai:doaj.org-article:d54c6e177f0a4bbbb1d57c0a8adc31262021-12-01T04:29:47ZPlankton community responses in Pampean lowland streams linked to intensive agricultural pollution1470-160X10.1016/j.ecolind.2020.106934https://doaj.org/article/d54c6e177f0a4bbbb1d57c0a8adc31262021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20308736https://doaj.org/toc/1470-160XLowland lotic ecosystems are under increasing pollution pressure. In this study, we analyzed the plankton community responses to environmental changes, including natural ones and those related to anthropogenic activities, to finally determine their optimums in natural conditions. In four dates, seven streams were sampled, and a total of twenty-one physical-chemical variables were measured or estimated (including metals and pesticides). Partial redundancy analyses were performed, as well as, General Linear Models (GLM) considering Reynolds Functional Groups (RFG) for phytoplankton, and families for zooplankton as response variables. Finally, the optimum concentration of these plankton groups was estimated. Results indicated that phytoplankton was dominated by diatoms belonging to functional groups B, C, and TB, being chlorophytes (J) and cyanobacteria (M) the subdominant groups. Zooplankton was dominated by Bdelloidea, Brachionidae, and Copepoda nauplii. For almost all groups of phytoplankton, except M, chemical oxygen demand (COD) and high nutrients concentrations contribute to explain their variations. However, the explanation percentages increased when other variables like temperature and light extinction coefficient were included. For zooplankton, chromium and biochemical oxygen demand (BOD5) explained variation of almost all groups. Variance explanation of Lecanidae, Gastropodidae, Trochosphaeridae, and Trichocercidae increased when conductivity and pH were included. Finally, both plankton groups had in general high maximum tolerance for COD, BOD5, and metals concentrations. We conclude that the plankton assemblages of these highly modified lowland streams could tolerate the anthropogenic disturbance, with organic pollution and eutrophication, as the most relevant.D. FrauM.F. GutierrezL. RegaldoM. SaigoM. LicursiElsevierarticleMetalsPesticidesOrganic pollutionEutrophicationLotic ecosystemsEcologyQH540-549.5ENEcological Indicators, Vol 120, Iss , Pp 106934- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Metals Pesticides Organic pollution Eutrophication Lotic ecosystems Ecology QH540-549.5
spellingShingle	Metals Pesticides Organic pollution Eutrophication Lotic ecosystems Ecology QH540-549.5 D. Frau M.F. Gutierrez L. Regaldo M. Saigo M. Licursi Plankton community responses in Pampean lowland streams linked to intensive agricultural pollution
description	Lowland lotic ecosystems are under increasing pollution pressure. In this study, we analyzed the plankton community responses to environmental changes, including natural ones and those related to anthropogenic activities, to finally determine their optimums in natural conditions. In four dates, seven streams were sampled, and a total of twenty-one physical-chemical variables were measured or estimated (including metals and pesticides). Partial redundancy analyses were performed, as well as, General Linear Models (GLM) considering Reynolds Functional Groups (RFG) for phytoplankton, and families for zooplankton as response variables. Finally, the optimum concentration of these plankton groups was estimated. Results indicated that phytoplankton was dominated by diatoms belonging to functional groups B, C, and TB, being chlorophytes (J) and cyanobacteria (M) the subdominant groups. Zooplankton was dominated by Bdelloidea, Brachionidae, and Copepoda nauplii. For almost all groups of phytoplankton, except M, chemical oxygen demand (COD) and high nutrients concentrations contribute to explain their variations. However, the explanation percentages increased when other variables like temperature and light extinction coefficient were included. For zooplankton, chromium and biochemical oxygen demand (BOD5) explained variation of almost all groups. Variance explanation of Lecanidae, Gastropodidae, Trochosphaeridae, and Trichocercidae increased when conductivity and pH were included. Finally, both plankton groups had in general high maximum tolerance for COD, BOD5, and metals concentrations. We conclude that the plankton assemblages of these highly modified lowland streams could tolerate the anthropogenic disturbance, with organic pollution and eutrophication, as the most relevant.
format	article
author	D. Frau M.F. Gutierrez L. Regaldo M. Saigo M. Licursi
author_facet	D. Frau M.F. Gutierrez L. Regaldo M. Saigo M. Licursi
author_sort	D. Frau
title	Plankton community responses in Pampean lowland streams linked to intensive agricultural pollution
title_short	Plankton community responses in Pampean lowland streams linked to intensive agricultural pollution
title_full	Plankton community responses in Pampean lowland streams linked to intensive agricultural pollution
title_fullStr	Plankton community responses in Pampean lowland streams linked to intensive agricultural pollution
title_full_unstemmed	Plankton community responses in Pampean lowland streams linked to intensive agricultural pollution
title_sort	plankton community responses in pampean lowland streams linked to intensive agricultural pollution
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/d54c6e177f0a4bbbb1d57c0a8adc3126
work_keys_str_mv	AT dfrau planktoncommunityresponsesinpampeanlowlandstreamslinkedtointensiveagriculturalpollution AT mfgutierrez planktoncommunityresponsesinpampeanlowlandstreamslinkedtointensiveagriculturalpollution AT lregaldo planktoncommunityresponsesinpampeanlowlandstreamslinkedtointensiveagriculturalpollution AT msaigo planktoncommunityresponsesinpampeanlowlandstreamslinkedtointensiveagriculturalpollution AT mlicursi planktoncommunityresponsesinpampeanlowlandstreamslinkedtointensiveagriculturalpollution
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Plankton community responses in Pampean lowland streams linked to intensive agricultural pollution

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