Regime shifts in coastal lagoons: Evidence from free-living marine nematodes
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | https://repositorio.unifesp.br/handle/11600/55093 http://dx.doi.org/10.1371/journal.pone.0172366 |
Resumo: | We test the validity of using the regime shift theory to account for differences in environmental state of coastal lagoons as a response to variation in connectivity with the sea, using free-living nematodes as a surrogate. The study is based on sediment samples from the inner and outer portions of 15 coastal lagoons (5 open to the sea, 5 intermittently open/closed, and 5 permanently closed lakes) along the southern coast of Brazil. Environmental data suggested that there are two contrasting environmental conditions, with coastal lakes being significantly different from open and intermittent lagoons. Marine nematode assemblages corroborate these two mutually exclusive alternative stable states (open vs. closed systems), but assemblages from the intermittently open/closed lagoons showed a gradual change in species composition between both systems independently of the environmental conditions. The gradient in the structural connectivity among lagoons and the sea, due to their regime shifts, changes the movement of resources and consumers and the internal physico-chemical gradients, directly affecting regional species diversity. Whereas openness to the sea increased similarity in nematode assemblage composition among connected lagoons, isolation increased dissimilarity among closed lagoons. Our results from a large-scale sampling program indicated that as lagoons lose connectivity with the sea, shifting the environmental state, local processes within individual intermittently open/closed lagoons and particularly within coastal lakes become increasingly more important in structuring these communities. The main implication of these findings is that depending on the local stable state we may end up with alternative regional patterns of biodiversity. |
id |
UFSP_dae2c7829953b45e5c2b5bdceb340928 |
---|---|
oai_identifier_str |
oai:repositorio.unifesp.br:11600/55093 |
network_acronym_str |
UFSP |
network_name_str |
Repositório Institucional da UNIFESP |
repository_id_str |
3465 |
spelling |
Netto, Sergio A.Fonseca, Gustavo [UNIFESP]2020-07-17T14:02:56Z2020-07-17T14:02:56Z2017Plos One. San Francisco, v. 12, n. 2, p. -, 2017.1932-6203https://repositorio.unifesp.br/handle/11600/55093http://dx.doi.org/10.1371/journal.pone.0172366WOS000394688200074.pdf10.1371/journal.pone.0172366WOS:000394688200074We test the validity of using the regime shift theory to account for differences in environmental state of coastal lagoons as a response to variation in connectivity with the sea, using free-living nematodes as a surrogate. The study is based on sediment samples from the inner and outer portions of 15 coastal lagoons (5 open to the sea, 5 intermittently open/closed, and 5 permanently closed lakes) along the southern coast of Brazil. Environmental data suggested that there are two contrasting environmental conditions, with coastal lakes being significantly different from open and intermittent lagoons. Marine nematode assemblages corroborate these two mutually exclusive alternative stable states (open vs. closed systems), but assemblages from the intermittently open/closed lagoons showed a gradual change in species composition between both systems independently of the environmental conditions. The gradient in the structural connectivity among lagoons and the sea, due to their regime shifts, changes the movement of resources and consumers and the internal physico-chemical gradients, directly affecting regional species diversity. Whereas openness to the sea increased similarity in nematode assemblage composition among connected lagoons, isolation increased dissimilarity among closed lagoons. Our results from a large-scale sampling program indicated that as lagoons lose connectivity with the sea, shifting the environmental state, local processes within individual intermittently open/closed lagoons and particularly within coastal lakes become increasingly more important in structuring these communities. The main implication of these findings is that depending on the local stable state we may end up with alternative regional patterns of biodiversity.National Council for Scientific and Technological Development (CNPq)Foundation for Research and Innovation of the State of Santa Catarina (FAPESC)Univ Southern Santa Catarina, Marine Sci Lab, Tubarao, SC, BrazilUniv Fed Sao Paulo, Dept Ciencias Mar, Santos, BrazilUniv Fed Sao Paulo, Dept Ciencias Mar, Santos, BrazilCNPq: 473293/2010-2FAPESC: 09/2009Web of Science-engPublic Library SciencePlos OneRegime shifts in coastal lagoons: Evidence from free-living marine nematodesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSan Francisco122info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESPORIGINALWOS000394688200074.pdfapplication/pdf2414116${dspace.ui.url}/bitstream/11600/55093/1/WOS000394688200074.pdf0804d91324a41751d5dd942d53ec66cdMD51open accessTEXTWOS000394688200074.pdf.txtWOS000394688200074.pdf.txtExtracted texttext/plain50844${dspace.ui.url}/bitstream/11600/55093/5/WOS000394688200074.pdf.txt2c7f38ba9dbcdb7b0208e72f759813d0MD55open accessTHUMBNAILWOS000394688200074.pdf.jpgWOS000394688200074.pdf.jpgIM Thumbnailimage/jpeg7594${dspace.ui.url}/bitstream/11600/55093/7/WOS000394688200074.pdf.jpgabce098e303eaf7bd907bcb9f7ae58bcMD57open access11600/550932023-06-05 19:40:13.799open accessoai:repositorio.unifesp.br:11600/55093Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-06-05T22:40:13Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.fl_str_mv |
Regime shifts in coastal lagoons: Evidence from free-living marine nematodes |
title |
Regime shifts in coastal lagoons: Evidence from free-living marine nematodes |
spellingShingle |
Regime shifts in coastal lagoons: Evidence from free-living marine nematodes Netto, Sergio A. |
title_short |
Regime shifts in coastal lagoons: Evidence from free-living marine nematodes |
title_full |
Regime shifts in coastal lagoons: Evidence from free-living marine nematodes |
title_fullStr |
Regime shifts in coastal lagoons: Evidence from free-living marine nematodes |
title_full_unstemmed |
Regime shifts in coastal lagoons: Evidence from free-living marine nematodes |
title_sort |
Regime shifts in coastal lagoons: Evidence from free-living marine nematodes |
author |
Netto, Sergio A. |
author_facet |
Netto, Sergio A. Fonseca, Gustavo [UNIFESP] |
author_role |
author |
author2 |
Fonseca, Gustavo [UNIFESP] |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Netto, Sergio A. Fonseca, Gustavo [UNIFESP] |
description |
We test the validity of using the regime shift theory to account for differences in environmental state of coastal lagoons as a response to variation in connectivity with the sea, using free-living nematodes as a surrogate. The study is based on sediment samples from the inner and outer portions of 15 coastal lagoons (5 open to the sea, 5 intermittently open/closed, and 5 permanently closed lakes) along the southern coast of Brazil. Environmental data suggested that there are two contrasting environmental conditions, with coastal lakes being significantly different from open and intermittent lagoons. Marine nematode assemblages corroborate these two mutually exclusive alternative stable states (open vs. closed systems), but assemblages from the intermittently open/closed lagoons showed a gradual change in species composition between both systems independently of the environmental conditions. The gradient in the structural connectivity among lagoons and the sea, due to their regime shifts, changes the movement of resources and consumers and the internal physico-chemical gradients, directly affecting regional species diversity. Whereas openness to the sea increased similarity in nematode assemblage composition among connected lagoons, isolation increased dissimilarity among closed lagoons. Our results from a large-scale sampling program indicated that as lagoons lose connectivity with the sea, shifting the environmental state, local processes within individual intermittently open/closed lagoons and particularly within coastal lakes become increasingly more important in structuring these communities. The main implication of these findings is that depending on the local stable state we may end up with alternative regional patterns of biodiversity. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017 |
dc.date.accessioned.fl_str_mv |
2020-07-17T14:02:56Z |
dc.date.available.fl_str_mv |
2020-07-17T14:02:56Z |
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.citation.fl_str_mv |
Plos One. San Francisco, v. 12, n. 2, p. -, 2017. |
dc.identifier.uri.fl_str_mv |
https://repositorio.unifesp.br/handle/11600/55093 http://dx.doi.org/10.1371/journal.pone.0172366 |
dc.identifier.issn.none.fl_str_mv |
1932-6203 |
dc.identifier.file.none.fl_str_mv |
WOS000394688200074.pdf |
dc.identifier.doi.none.fl_str_mv |
10.1371/journal.pone.0172366 |
dc.identifier.wos.none.fl_str_mv |
WOS:000394688200074 |
identifier_str_mv |
Plos One. San Francisco, v. 12, n. 2, p. -, 2017. 1932-6203 WOS000394688200074.pdf 10.1371/journal.pone.0172366 WOS:000394688200074 |
url |
https://repositorio.unifesp.br/handle/11600/55093 http://dx.doi.org/10.1371/journal.pone.0172366 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.none.fl_str_mv |
Plos One |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
- |
dc.coverage.none.fl_str_mv |
San Francisco |
dc.publisher.none.fl_str_mv |
Public Library Science |
publisher.none.fl_str_mv |
Public Library Science |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UNIFESP instname:Universidade Federal de São Paulo (UNIFESP) instacron:UNIFESP |
instname_str |
Universidade Federal de São Paulo (UNIFESP) |
instacron_str |
UNIFESP |
institution |
UNIFESP |
reponame_str |
Repositório Institucional da UNIFESP |
collection |
Repositório Institucional da UNIFESP |
bitstream.url.fl_str_mv |
${dspace.ui.url}/bitstream/11600/55093/1/WOS000394688200074.pdf ${dspace.ui.url}/bitstream/11600/55093/5/WOS000394688200074.pdf.txt ${dspace.ui.url}/bitstream/11600/55093/7/WOS000394688200074.pdf.jpg |
bitstream.checksum.fl_str_mv |
0804d91324a41751d5dd942d53ec66cd 2c7f38ba9dbcdb7b0208e72f759813d0 abce098e303eaf7bd907bcb9f7ae58bc |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP) |
repository.mail.fl_str_mv |
|
_version_ |
1802764263752728576 |