Infauna


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Related to Infauna: Epifauna, Epifaunal

infauna

[in′fȯn·ə]
(zoology)
Aquatic animals which live in the bottom sediment of a body of water.

Infauna

 

animals dwelling in bottom sediments of seas, rivers, lakes, and ponds. They include many mollusks, echinoderms, segmented and round worms, insect larvae, some fishes, stone borers (some sponges, mollusks, sea urchins), and wood borers (the mollusk Teredo, some crustaceans). Infauna is categorized by the type of sediment in which it dwells: pelophilic (in ooze), psammophilic (in sand), lithophilic (in stones), and argillophilic (in clay). Most species of infauna feed on detritus. Certain forms of infauna carry out daily and seasonal vertical migrations. Infauna is important as a source of food for fishes that feed on bottom-dwelling animals (benthos).

References in periodicals archive ?
The observed increase in plant cover over time and associated changes in abiotic conditions were accompanied by significant increases in the abundances and richness of mobile ground-dwelling fauna, benthic infauna, and canopy insects (Table II-N; Fig.
Although creating several centimeters of separation between the sweeps and the seafloor greatly reduces the potential for damage to infauna and small epifauna, it does not prevent contact with seafloor features and animals larger than that spacing.
The benthos of some southern African lakes Part II: the epifauna and infauna of the benthos of Lake Sibayi.
zonation many fixed sessile mollucsa few infauna species low abundance of available species individuals prey species not associated with sediment type high molluscan species diversity evolving community/patch stasis
5 m, including epifauna and infauna associated with the sediment.
Yoldia limatula, a group of suspension-feeding marine clams, and Nereis diversicolor, a predatory marine polychaete will be added to sediment microcosms and a series of scans performed to determine how the infauna alters porosity.
Perhaps at even greater risk are the migrant shorebirds that consume members of the invertebrate infauna living within the substrate.
They concluded that besides the negative effects of tidal action, the infauna of mud flats may reduce soil stability, increase the rate of erosion, and prevent the normal successional process on mud flats from developing salt marsh vegetation (Gerdol & Hughes, 1993).
Anything that's important to the infauna [here] is important to cod.
An experimental assessment of the potential impacts of longline mussel farming in on the infauna in an open coastal embayment.
Whereas the majority of aquatic macrofauna that can be quantified in photos are epifauna, there have been attempts to quantify infauna or biogenic structures created by infauna.