epifauna

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Related to Epifaunal: infauna, faunas

epifauna

the part of the BENTHOS living on the mud surface.
References in periodicals archive ?
A distance-based permutational multivariate analysis of variance (PERMANOVA) was performed to determine the effects of chronic acidification regime and episodic exposure treatment on patterns in oyster-associated epifaunal communities (Anderson 2001).
Igualmente, la riqueza de las asociaciones, la variedad en los morfogrupos de los bentonicos encontrados (planoespirales, trocoespirales, uniseriales alargados) y una mayor proporcion de las formas con habitos de vida epifaunal, estaria relacionado con condiciones de buena a moderada oxigenacion en los sedimentos de fondo (FIGURA 8).
The physical disturbance caused by towing gears effect the benthic ecosystem by reducing or changing the abundance and distribution patterns of both infaunal and epifaunal communities.
The benthic foraminiferal assemblages are diverse (average 90 species), with similar proportions of infaunal and epifaunal taxa.
Studies in which bottom grabs were used to sample organisms in unconsolidated sediments have revealed a measurable impact from trawling on an infaunal community in the North Sea from a single pass of a beam trawl, even in an environment that had been trawled heavily for decades (Reiss et ah, 2009), but in a study in South Africa, no measurable impacts of additional trawling to the epifaunal community in a continuously trawled area (Atkinson et ah, 2011).
epifaunal benthic foraminifera from the Arctic Ocean, found that the great majority of living benthic species occurred in the upper 2 cm of sediment.
Scales of life range across microbial, meiofaunal, mesofaunal, maerofaunal, and megafaunal; modes of life include planktonic, pelagic, nektic, benthic (motile and sessile), epifaunal, semi-infaunal, and infaunal.
The lack of plugs in many specimens likewise precludes their origin as a vertically-oriented burrow or as an escape trace by an infaunal or epifaunal animal like an anemone.