Reciprocal experimental transplantations to assess effects of organic enrichment on the recolonization of benthic macrofauna in a subtropical estuary

Gern, Fabiana Regina; Lana, Paulo da Cunha

doi:10.1016/j.marpolbul.2012.11.026

Cited by 13 publications

(2 citation statements)

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“…The disturbance caused by dredging and the high hydrodynamics hinder the migration and settlement of microbenthic juveniles in this location. The recovery of benthic communities in disturbed environments is associated with the migration of opportunistic species, juveniles and larval recruitment (Faraco & Lana, 2003;Egres et al, 2012;Gern & Lana, 2013;Sandrini-Neto & Lana, 2014).…”

Section: Discussionmentioning

confidence: 99%

Does dredging activity exert an influence on benthic macrofauna in tropical estuaries? Case study on the northern coast of Brazil

Sousa

Cutrim

Júnior

et al. 2023

Iheringia, Sér. Zool.

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The aim of the present study was to investigate the effect of dredging activities on the structure of the macrobenthic community of a port complex in São Luís do Maranhão (2°S, Brazil). Sampling was performed on four occasions: pre-dredging, dredging 1 (25% of the material dredged), dredging 2 (75% of the material dredged) and post-dredging. Total mean density was 430.8 ± 55.0 ind/m², with 147.76 ± 280.82 ind/m² at pre-dredging, 161.90 ± 285.67 ind/m² at dredging 1, 53.83 ± 72.15 ind/m² at dredging 2 and 67.29 ± 72.58 ind/m² after dredging, revealing a reduction during dredging 2. The most representative groups were Polychaeta, Oligochaeta, Crustacea and Mollusca. Lumbrineris sp. (Polychaeta) was present in all sampling periods and was the dominant species. Richness and Shannon diversity of the species were higher in the pre-dredging and post-dredging periods, with reductions during the dredging activities (dredging 1 and 2). Principal component analysis revealed a correlation with granulometry and heavy metals in the sediment. The dredging activities led to a reduction in the macrobenthic community. Moreover, post-dredging recovery was insufficient for the recovery of the community.

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Section: Discussionmentioning

confidence: 99%

Does dredging activity exert an influence on benthic macrofauna in tropical estuaries? Case study on the northern coast of Brazil

Sousa

Cutrim

Júnior

et al. 2023

Iheringia, Sér. Zool.

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“…As has been revealed for temperate and tropical estuaries in the Northern hemisphere, significant differences in community structure, succession and trophic processes occur between vegetated and unvegetated sediments in subtropical estuaries (LANA and GUISS, 1992;NETTO and LANA, 1999). Manipulative and mensurative experiments also revealed the responses of benthic communities to nutrient loading and pollution effects, which greatly improved our understanding of mechanisms of community resilience and succession after disturbance (FARACO and LANA, 2003;MENDES and SOARES-GOMES, 2011;GERN and LANA, 2013;SOUZA et al, 2013). Recognising these patterns on local and regional scales allows for better predictive models of benthic community responses to habitat modification, species invasion and subsequent changes in sediment biogeochemistry (NEIRA et al, 2005;DEMOPOULOS et al, 2007;CANNICCI et al, 2008;DEMOPOULOS and SMITH, 2010;SWEETMAN et al, 2010).…”

Section: Moving From Community Structure To Ecological Processesmentioning

confidence: 99%

Benthic estuarine communities in Brazil: moving forward to long term studies to assess climate change impacts

et al. 2016

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Estuaries are unique coastal ecosystems that sustain and provide essential ecological services for mankind. Estuarine ecosystems include a variety of habitats with their own sediment-fauna dynamics, all of them globally undergoing alteration or threatened by human activities. Mangrove forests, saltmarshes, tidal flats and other confined estuarine systems are under increasing stress due to human activities leading to habitat and species loss. Combined changes in estuarine hydromorphology and in climate pose severe threats to estuarine ecosystems on a global scale. The ReBentos network is the first integrated attempt in Brazil to monitor estuarine changes in the long term to detect and assess the effects of global warming. This paper is an initial effort of ReBentos to review current knowledge on benthic estuarine ecology in Brazil. We herein present and synthesize all published work on Brazilian estuaries that has focused on the description of benthic communities and related ecological processes. We then use current data on Brazilian estuaries and present recommendations for future studies to address climate change effects, suggesting trends for possible future research and stressing the need for long-term datasets and international partnerships. AbstrActDescriptors: Estuaries, Benthic ecology, Climate change, Brazil, Impacts Estuários são ecossistemas costeiros que sustentam uma ampla variedade de serviços ambientais para a humanidade. Estuários abrigam muitos ambientes bentônicos com características específicas e seriamente ameaçados globalmente. Manguezais, marismas e planícies de maré são amplamente impactados por poluentes domésticos e industriais, por atividades comerciais que levam à perda de habitat e pela sobrepesca. Os diversos impactos locais, associados a mudanças regionais e globais na hidromorfologia estuarina e potenciais efeitos de mudanças climáticas, colocam sérias ameaças a ecossistemas estuarinos. A rede Bentos foi criada para estudar o efeito de mudanças no clima em ecossistemas bentônicos costeiros brasileiros. Este trabalho faz parte dos esforços iniciais do Grupo de Trabalho Estuários em rever o conhecimento sobre comunidades bentônicas estuarinas no Brasil. Aqui apresentamos uma breve revisão crítica sobre os trabalhos realizados objetivando o estudo, em nível de comunidades, do bentos estuarino e processos ecológicos associados. A partir do cenário atual, realizamos recomendações de estudo para responder questões científicas sobre efeitos de mudanças climáticas em comunidades bentônicas estuarinas, e enfatizamos a necessidade de bases de dados contínuas e de longa duração e o estabelecimento de parcerias internacionais com foco específico nos estuários brasileiros.

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Benthic Estuarine Assemblages of the Southeastern Brazil Marine Ecoregion (SBME)

Lana

Christofoletti

Gusmao

et al. 2018

Brazilian Marine Biodiversity

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Reciprocal experimental transplantations to assess effects of organic enrichment on the recolonization of benthic macrofauna in a subtropical estuary

Cited by 13 publications

References 51 publications

Does dredging activity exert an influence on benthic macrofauna in tropical estuaries? Case study on the northern coast of Brazil

Does dredging activity exert an influence on benthic macrofauna in tropical estuaries? Case study on the northern coast of Brazil

Benthic estuarine communities in Brazil: moving forward to long term studies to assess climate change impacts

Benthic Estuarine Assemblages of the Southeastern Brazil Marine Ecoregion (SBME)

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