Benthic community modification and recovery following intensive grazing byStrongylocentrotus droebachiensis
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چکیده
منابع مشابه
PCB-induced changes of a benthic community and expected ecosystem recovery following in situ sorbent amendment.
The benthic community was analyzed to evaluate pollution-induced changes for the polychlorinated biphenyl (PCB)-contaminated site at Hunters Point (HP) relative to 30 reference sites in San Francisco Bay, California, USA. An analysis based on functional traits of feeding, reproduction, and position in the sediment shows that HP is depauperate in deposit feeders, subsurface carnivores, and speci...
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Fundamental to the scientific method is the use of controls or control conditions against which results obtained under test conditions are compared. In field studies, all variables cannot be controlled and replicates cannot be randomly assigned to treatments, so an attempt is made to choose test and control conditions (often represented by different sites) that are as similar as possible; the v...
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s 1998 Benthic Ecology Meeting (4) Invited seminars given by Carman at Florida State University, Old Dominion Univ., Inst. for Marine Sciences (UNC Chapel Hill marine lab), Univ. North Carolina Chapel Hill, Univ. South Carolina 1997 American Society for Limnology & Oceanography (3) 1996 Ocean Sciences Meeting; Benthic Ecology Meeting 1995 Ninth International Meiofauna Conference; Benthic Ecolog...
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Periphyton grazing by the marine isopod Idothea chelipes was studied by exposing periphyton grown on glass slides to a gradient of grazer densities. An analysis of the algal growth rates and their relationships to grazer density revealed two groups of algae. The unicellular diatoms Licmophora ehrenbergii, Fragilaria tabulata, Navicula spp., Cocconeis costata, and the green alga Ulothrix implexa...
متن کاملBenthic community structure on coral reefs exposed to intensive recreational snorkeling
Chronic anthropogenic disturbances on coral reefs in the form of overfishing and pollution can shift benthic community composition away from stony corals and toward macroalgae. The use of reefs for recreational snorkeling and diving potentially can lead to similar ecological impacts if not well-managed, but impacts of snorkeling on benthic organisms are not well understood. We quantified variat...
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ژورنال
عنوان ژورنال: Helgoländer Wissenschaftliche Meeresuntersuchungen
سال: 1977
ISSN: 0017-9957,1438-3888
DOI: 10.1007/bf02207855