Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirs
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10933-019-00083-3 http://hdl.handle.net/11449/184708 |
Resumo: | The relative contribution of environmental and spatial drivers of community structure has been the focus of many ecological studies. In the context of metacommunity theory, diatoms have been associated mainly with local environmental factors, but in some cases spatial factors have also been identified as important drivers. This study aimed to determine the relative importance of environmental and spatial drivers as predictors of surface sediment and water column diatom assemblages in tropical reservoirs. Sampling was carried out in 33 reservoirs in southeast Brazil, which range in trophic state from oligotrophic to hypereutrophic, and span five hydrological basins. We performed a partial RDA between the predictor matrices (environmental and spatial predictors) and the response matrix (either surface sediment or water column diatom assemblages) to identify the main environmental drivers, and used variation partitioning to assess the relative contribution of environmental and spatial predictors of diatom assemblages. In general, diatom assemblages were structured by a combination of environmental and spatial drivers. Comparisons of results between surface sediment and water column ordinations demonstrated that the assemblages were structured by similar environmental variables (productivity-related variables such as total phosphorus, water transparency and pH) and by a similar set of diatom species, mainly centric diatoms like Aulacoseira granulata var. granulata, A. tenella, Discostella stelligera and Spicaticribra kingstonii. Overall, surface sediment diatoms were more strongly associated with environmental factors than were water-column assemblages, probably because they integrate information in space and time, confirming that surface sediment assemblages are robust indicators of environmental conditions. |
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Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirsAlgaeEnvironmental predictorsEnvironmental gradientMetacommunitySpatial predictorsThe relative contribution of environmental and spatial drivers of community structure has been the focus of many ecological studies. In the context of metacommunity theory, diatoms have been associated mainly with local environmental factors, but in some cases spatial factors have also been identified as important drivers. This study aimed to determine the relative importance of environmental and spatial drivers as predictors of surface sediment and water column diatom assemblages in tropical reservoirs. Sampling was carried out in 33 reservoirs in southeast Brazil, which range in trophic state from oligotrophic to hypereutrophic, and span five hydrological basins. We performed a partial RDA between the predictor matrices (environmental and spatial predictors) and the response matrix (either surface sediment or water column diatom assemblages) to identify the main environmental drivers, and used variation partitioning to assess the relative contribution of environmental and spatial predictors of diatom assemblages. In general, diatom assemblages were structured by a combination of environmental and spatial drivers. Comparisons of results between surface sediment and water column ordinations demonstrated that the assemblages were structured by similar environmental variables (productivity-related variables such as total phosphorus, water transparency and pH) and by a similar set of diatom species, mainly centric diatoms like Aulacoseira granulata var. granulata, A. tenella, Discostella stelligera and Spicaticribra kingstonii. Overall, surface sediment diatoms were more strongly associated with environmental factors than were water-column assemblages, probably because they integrate information in space and time, confirming that surface sediment assemblages are robust indicators of environmental conditions.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)FAPEAM (Fundacao de Amparo a Pesquisa do Estado do Amazonas)Inst Bot, Dept Ecol, Av Miguel Stefano 3687, BR-04301902 Sao Paulo, SP, BrazilUniv Estadual Paulista, Inst Biociencias, Rio Claro, SP, BrazilUniv Fed Amazonas, Inst Ciencias Sociais Educ & Zootecnia, Parintins, AM, BrazilMcGill Univ, Dept Biol, Montreal, PQ, CanadaUniv Estadual Paulista, Inst Biociencias, Rio Claro, SP, BrazilFAPESP: 2009/53898-9FAPESP: 2013/14337-7CNPq: 310404/2016-9SpringerInst BotUniversidade Estadual Paulista (Unesp)Univ Fed AmazonasMcGill UnivBartozek, Elaine C. R. [UNESP]Silva-Lehmkuhl, Angela M. da [UNESP]Gregory-Eaves, IreneBicudo, Denise C.2019-10-04T12:16:03Z2019-10-04T12:16:03Z2019-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article245-257http://dx.doi.org/10.1007/s10933-019-00083-3Journal Of Paleolimnology. Dordrecht: Springer, v. 62, n. 3, p. 245-257, 2019.0921-2728http://hdl.handle.net/11449/18470810.1007/s10933-019-00083-3WOS:000484934500002Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Paleolimnologyinfo:eu-repo/semantics/openAccess2021-10-23T19:02:08Zoai:repositorio.unesp.br:11449/184708Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:10:25.595760Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirs |
title |
Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirs |
spellingShingle |
Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirs Bartozek, Elaine C. R. [UNESP] Algae Environmental predictors Environmental gradient Metacommunity Spatial predictors |
title_short |
Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirs |
title_full |
Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirs |
title_fullStr |
Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirs |
title_full_unstemmed |
Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirs |
title_sort |
Environmental and spatial drivers of diatom assemblages in the water column and surface sediment of tropical reservoirs |
author |
Bartozek, Elaine C. R. [UNESP] |
author_facet |
Bartozek, Elaine C. R. [UNESP] Silva-Lehmkuhl, Angela M. da [UNESP] Gregory-Eaves, Irene Bicudo, Denise C. |
author_role |
author |
author2 |
Silva-Lehmkuhl, Angela M. da [UNESP] Gregory-Eaves, Irene Bicudo, Denise C. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Inst Bot Universidade Estadual Paulista (Unesp) Univ Fed Amazonas McGill Univ |
dc.contributor.author.fl_str_mv |
Bartozek, Elaine C. R. [UNESP] Silva-Lehmkuhl, Angela M. da [UNESP] Gregory-Eaves, Irene Bicudo, Denise C. |
dc.subject.por.fl_str_mv |
Algae Environmental predictors Environmental gradient Metacommunity Spatial predictors |
topic |
Algae Environmental predictors Environmental gradient Metacommunity Spatial predictors |
description |
The relative contribution of environmental and spatial drivers of community structure has been the focus of many ecological studies. In the context of metacommunity theory, diatoms have been associated mainly with local environmental factors, but in some cases spatial factors have also been identified as important drivers. This study aimed to determine the relative importance of environmental and spatial drivers as predictors of surface sediment and water column diatom assemblages in tropical reservoirs. Sampling was carried out in 33 reservoirs in southeast Brazil, which range in trophic state from oligotrophic to hypereutrophic, and span five hydrological basins. We performed a partial RDA between the predictor matrices (environmental and spatial predictors) and the response matrix (either surface sediment or water column diatom assemblages) to identify the main environmental drivers, and used variation partitioning to assess the relative contribution of environmental and spatial predictors of diatom assemblages. In general, diatom assemblages were structured by a combination of environmental and spatial drivers. Comparisons of results between surface sediment and water column ordinations demonstrated that the assemblages were structured by similar environmental variables (productivity-related variables such as total phosphorus, water transparency and pH) and by a similar set of diatom species, mainly centric diatoms like Aulacoseira granulata var. granulata, A. tenella, Discostella stelligera and Spicaticribra kingstonii. Overall, surface sediment diatoms were more strongly associated with environmental factors than were water-column assemblages, probably because they integrate information in space and time, confirming that surface sediment assemblages are robust indicators of environmental conditions. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-04T12:16:03Z 2019-10-04T12:16:03Z 2019-10-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s10933-019-00083-3 Journal Of Paleolimnology. Dordrecht: Springer, v. 62, n. 3, p. 245-257, 2019. 0921-2728 http://hdl.handle.net/11449/184708 10.1007/s10933-019-00083-3 WOS:000484934500002 |
url |
http://dx.doi.org/10.1007/s10933-019-00083-3 http://hdl.handle.net/11449/184708 |
identifier_str_mv |
Journal Of Paleolimnology. Dordrecht: Springer, v. 62, n. 3, p. 245-257, 2019. 0921-2728 10.1007/s10933-019-00083-3 WOS:000484934500002 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Paleolimnology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
245-257 |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128473512804352 |