Journal
WETLANDS ECOLOGY AND MANAGEMENT
Volume 19, Issue 3, Pages 257-272Publisher
SPRINGER
DOI: 10.1007/s11273-011-9215-5
Keywords
Macrobenthos; Invertebrates; Spartina; Diversity; Tropical estuaries
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Funding
- Brazilian National Research Council (CNPq) [472234/2007-2]
- Instituto Internacional de Educacao do Brasil (IEB)
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The composition and abundance of the poorly known benthic macroinfauna associated with northern Brazilian saltmarshes, were described from eight sites (between 0 degrees 42'2.5 '' S, 47 degrees 52'44.1 '' W and 0 degrees 5 '' 17.3 '' S, 46 degrees 36'13.3 '' W) along the Para coast, Brazil. Sampling was carried out in November of 2007. Univariate and multivariate analyses were used to test for differences in sediment, vegetation and macroinfaunal variables among sites. No vertical zonation of the macroinfauna was detected. Macroinfaunal structure differed greatly among sites with different sediment and vegetation characteristics. Number of individuals and taxa were low in sites with sandy sediments and short, sparse vegetation and high in those with silty sediments with high organic matter and water contents, and tall, dense vegetation. Increasing number of individuals and taxa were associated with a geographical gradient in pore water salinity, which increases from west to east, coinciding with patterns of rainfall described for the Para coast.
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