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Testing for nematode-granulometry relationships

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Date
2014-09-01
Author
Fonseca, Gustavo Fernandes Camargo [UNIFESP]
Maria, T. F.
Kandratavicius, N.
Venekey, V.
Gheller, P. F.
Gallucci, Fabiane [UNIFESP]
Type
Artigo
ISSN
1867-1616
Is part of
Marine Biodiversity
DOI
10.1007/s12526-014-0241-4
Metadata
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Abstract
The majority of studies have advocated that diversity of marine nematodes increases with increasing sediment grain size, although the opposite trend has also been suggested. the controversy is partially caused by not taking into account the effect of density on patterns of diversity and by analyzing datasets from different environments. the present study investigated nematode assemblages from sediments varying from very fine sand (mean grain size of 0.12 mm) to very coarse sand (1 mm) in shallow sublittoral marine environments. Contrary to previous studies, species richness was constant along the granulometric spectrum, despite significant changes in composition. the dominant genera were separated into five groups according to their optimum distribution and there was little overlap between these groups. Concepts from the niche theory explain to some extent the observed patterns. for instance, some of the coexisting genera were from different feeding types.
Citation
Marine Biodiversity. Heidelberg: Springer Heidelberg, v. 44, n. 3, p. 435-443, 2014.
Keywords
Free-living marine nematodes
Sediment
Shallow water
Species richness
Species range
Sponsorship
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
URI
http://repositorio.unifesp.br/handle/11600/38146
Collections
  • IMar - Artigos [219]

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