4.6 Article

Can short-term meteorological events alter subtropical estuarine macrobenthic assemblages in seagrass meadows (Patos Lagoon Estuary-Southern Brazil)?

期刊

ESTUARINE COASTAL AND SHELF SCIENCE
卷 261, 期 -, 页码 -

出版社

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ecss.2021.107532

关键词

Estuary; Wind; Weather disturbance; Macrozoobenthos; Submerged aquatic vegetation

资金

  1. Newton Funding (British Council)
  2. Brazilian Council for Scientific and Technological Development (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico, CNPq)
  3. Coordination for the Improvement of Higher Education Personnel (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior, CAPES)
  4. Research Support Foundation of the State of Rio Grande do Sul (Fundacao de Amparo `a Pesquisa do Estado do Rio Grande do Sul)
  5. Fundacao de Amparo `a Pesquisa do Estado do Rio Grande do Sul (FAPERGS)
  6. CNPq

向作者/读者索取更多资源

Short-term meteorological events, specifically occluded fronts, have different impacts on macrozoobenthic assemblages in seagrass meadows and sandflats. The first occluded front did not disturb the macrofaunal assemblage, while the second front induced changes in vegetation coverage and biodiversity.
Short-term meteorological events, or occluded fronts, can cause variations in the diversity and density of macrozoobenthic assemblages from a seagrass meadow and sandflat at the subtropical Patos Lagoon Estuary (32 degrees S; Brazil). The first occluded front (EV1), with an average wind speed of 3.71 ms-1, did not disturb the macrofaunal assemblage because seagrass dampened the effect and increased the belowground biomass, seagrass coverage and canopy height. In contrast, after the second occluded front (EV2), with an average wind speed of 3.08 ms-1, the meteorological disturbance induced a reduction in vegetation coverage and epifaunal diversity in seagrass meadows. However, the EV2 disturbance increased the infaunal density in the sandflat and the diversity in the seagrass meadow. In this way, after EV2, the macrofaunal assemblages were modified in the sandflats. Our study shows the important role of shelter and habitat complexity provided by seagrass beds and highlights that, because of vegetation coverage loss, the occluded fronts, which are becoming more intense and frequent in a global warming context, can cause changes in macrofaunal assemblage structure.

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