By studying the chondrichthyan fauna, the nektonic
community can be added to the overall picture.
This patchiness, in turn, concentrates fish and nektonic
invertebrates, which attract resident and migratory higher vertebrates.
Fish and nektonic
crustacean abundance (numbers and biomass) and species composition differed along the salinity gradient between 0.
2] flux from the sediment to the water column), planktonic and nektonic
respiration (autotrophs and heterotrophs), and photochemical degradation, will be further explored as separate topics.
These morphological differences indicate that nektonic
larvae of T.
Planktonic, benthic, and nektonic
communities differ considerably along the salinity gradient of the Mullica River, as well as in areas of Great Bay where salinity differences can be substantial (Durand and Nadeau, 1972; Durand, 1988).
Their larvae are nektonic
and are found associated with floating vegetation.
The associated biota can be subdivided into four units: epiphytic, epibenthic, infaunal and nektonic
organisms (Kikuchi and Peres 1977).
I sampled nektonic
invertebrate communities along benthic substrates by placing invertebrate activity traps (two traps/mesocosm) on the bottom-center of each mesocosm for 24 h (1-L plastic bottles with an inverted funnel opening on one end [Riley and Bookhout 1990]).
The effects of oyster shell dredging on macrobenthic and nektonic
organisms in San Antonio Bay.
Seasonal distribution, abundance, biomass, species richness, and community composition of nektonic
, demersal, epibenthic, and infaunal organisms were examined in cultivated and uncultivated shallow-water habitats in Virginia and New Jersey.
The Fornea Formation is represented by a 22 m thick succession of grey marly limestones and marls, containing an abundant and diversified fossil content of nektonic
groups (ammonites, belemnites).