Ant predation on intertidal polychaetes in a SW Atlantic estuary
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چکیده
منابع مشابه
The Distribution of Trace Metal Pollutants within Intertidal Sediments of the Tamar Estuary, Sw England
Concentrations of trace metal pollutants are frequently reported from intertidal sediments (e.g. Bryan and Langston, 1992; French, 1993; Lindsay and Bell, 1997; Pirrie et al., 1997, 2000) and as these areas are often sites of intense human and animal activity, the level of contaminants are of particular interest with respect to environmental health (Rae, 1997; Clark, 1997). When trace metals ar...
متن کاملImpact of macroalgal blooms and wader predation on intertidal macroinvertebrates: experimental evidence from the Mondego estuary (Portugal).
The effect of macroalgal blooms and predation by wading on benthic macroinvertebrates was examined in the Mondego estuary, Portugal, during spring 1997. Introduced macroalgal cover and exclusion of predators were used to examine changes in density of macroinvertebrates using univariate and multivariate analyses. There was no evidence of changes in numbers of macroinvertebrates due to predation....
متن کاملThe effect of the SW Atlantic burrowing crab Chasmagnathus granulatus on the intertidal razor clam Tagelus plebeius
The deposit feeding burrowing crab Chasmagnathus granulatus and the suspension feeding burrowing clam Tagelus plebeius occur sympatrically in the intertidal flats of the south western Atlantic estuarine environments. Common ecological theory predicts negative effects of deposit feeder bioturbation on co-occurring suspension feeders up to complete exclusion of the latter. By means of descriptive...
متن کاملPredation: a causal mechanism for variability in intertidal bivalve populations
Two caging experiments were conducted on an intertidal mudflat to assess the impact of predation on two species of bivalves; Macoma balthica and Cerastoderma edule. The first caging 2 experiment enclosed the shore crab, Carcinus maenas, carapace width 15–25 mm, in 1-m cages. The three treatments were zero Carcinus (control), five Carcinus (the highest natural densities found at this site) and 2...
متن کاملAs good as dead? Sublethal predation facilitates lethal predation on an intertidal clam
John J. Meyer* and James E. Byers Department of Zoology, University of New Hampshire, 46 College Road, Durham, NH 03824, USA *Corresponding: E-mail: [email protected] Abstract Although ecologists have speculated that sublethal predation can impact prey dynamics, consequences of these predator effects have seldom been experimentally tested. In softsediment marine communities, fishes crop extended ...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2003
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps253165