Sampling small invertebrates at the sediment-water interface.

Rubicon Research Repository/Manakin Repository

Sampling small invertebrates at the sediment-water interface.

Show full item record


Title: Sampling small invertebrates at the sediment-water interface.
Author: Cahoon, LB; Lindquist, DG; Clavijo, IE; Tronzo, CR
Abstract: Small invertebrates associated with the sediment-water interface habitat were sampled at four sites in Onslow Bay, North Carolina from 1983 to 1989 by five methods: vertical plankton net tows, reentry trapping, emergence trapping, airlift sampling, and Ekman grab sampling. Comparisons of the assemblages captured show that each method samples a different assemblage of small invertebrates. Three more or less distinct assemblages of small invertebrates can be identified: a holozooplankton group distinguished by calanoid copepods, chaetognaths, and larvaceans; a demersal zooplankton group distinguished by cumaceans, gammarid amphipods, and mysids; and a meiofauna group distinguished by high proportions of nematodes and harpacticoid copepods. Several taxa are important fractions of more than one assemblage. Copepod nauplii appear to remain close to the bottom but do not enter or attach to the substrate, and are thus members of both the holozooplankton and demersal zooplankton, as are cyclopoid copepods, which do appear to associate with benthic substrates. Harpacticoid copepods are important members of all three groups. Individual species within these major taxa probably exhibit quite variable behavior.s. Consequently, choice of methods used to sample these different assemblages is important.
Description: American Academy of Underwater Sciences (http://www.aaus.org/)
URI: http://archive.rubicon-foundation.org/9034
Date: 1992

Files in this item

Files Size Format View
AAUS_1992_6.pdf 5.055Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Browse

My Account