skip to main content
Idioma:
Primo Search
Clear Search Box
Search in: Busca Geral
Busca Avançada
Busca por Índices

Environmental influences on resident and transient fishes across shallow estuarine beaches and tidal flats in a Brazilian World Heritage area

Pichler, Helen A. ; Spach, Henry L. ; Gray, Charles A. ; Broadhurst, Matt K. ; Schwarz, Roberto ; de Oliveira Neto, José F.

Estuarine, coastal and shelf science, 2015-10, Vol.164, p.482-492 [Periódico revisado por pares]

Elsevier Ltd

Texto completo disponível

Citações Citado por
  • Título:
    Environmental influences on resident and transient fishes across shallow estuarine beaches and tidal flats in a Brazilian World Heritage area
  • Autor: Pichler, Helen A. ; Spach, Henry L. ; Gray, Charles A. ; Broadhurst, Matt K. ; Schwarz, Roberto ; de Oliveira Neto, José F.
  • Assuntos: Atherinella brasiliensis ; Beaches ; Brackish ; Brackish water fish ; Brazil ; Correlation ; Ecological associations ; Estuarine environments ; Fish ; Habitats ; Marine ; Nursery grounds ; Pisces ; Seasonal variations ; Sphoeroides greeleyi ; Sphoeroides testudineus ; Tidal flats ; Wet season
  • É parte de: Estuarine, coastal and shelf science, 2015-10, Vol.164, p.482-492
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: The consistency and environmental correlates of habitat- and season-related differences among shallow-water fish assemblages inhabiting estuarine beaches (EB) and tidal flats (TF) were examined in the subtropical Paranaguá estuary, which borders a World Heritage listed area. Assemblages were diurnally sampled each month (May 2003–March 2004) using small-meshed beach seines. Forty-six and 49 species were captured at EB (24 families) and TF (23 families), with most individuals at the latter (66 and 54% by number and biomass). Resident fishes accounted for 74% of individuals, but only 31% of all species. Most species were juvenile marine transients, but occurred sporadically and in low numbers. Three residents (Sphoeroides testudineus, Atherinella brasiliensis and Sphoeroides greeleyi) dominated assemblages and contributed the most to the index of relative importance of each habitat. Habitat-related differences in assemblages and key population parameters were complex and generally depended on the month sampled rather than water salinity or temperature (owing to comparable temporal variability). Ocean proximity was probably the cause of some differences, with more recruits of marine species early in the wet season at EB, but later at TF. Nevertheless, some resident gobiids and paralichthyids displayed habitat partitioning, possibly related to sediment preferences. There were strong seasonal differences in assemblages, primarily due to more juveniles of resident and transient species during the wet and possibly reflecting more optimal conditions for the young-of-the-year survival due to increased primary and secondary productivity. Environmental correlates of salinity and temperature with assemblage parameters were generally weak, but increasing water temperature prior to the wet season may be a key driver for reproduction, so that larvae are delivered during the wet season. The shallow, low-energy sandy beaches and tidal flats are used by a large diversity of fish, and consequently need to be considered in conservation and biodiversity estuary management plans. •Unvegetated beaches and tidal flats were seined in the Paranaguá estuary.•>70 species were caught across all sites, and most were marine transients.•Habitat-related differences were mostly affected by oceanic proximity.•There were strong seasonal differences in assemblages—affected by rainfall.•The data support considering estuarine beaches and tidal flats in management plans.
  • Editor: Elsevier Ltd
  • Idioma: Inglês
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.