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A large corer for quantitatively sampling benthos in shallow water 1
Author(s) -
Thayer Gordon W.,
Williams Richard B.,
Price Thomas J.,
Colby David R.
Publication year - 1975
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1975.20.3.0474
Subject(s) - estuary , benthos , invertebrate , substrate (aquarium) , sampling (signal processing) , environmental science , geology , waves and shallow water , oceanography , hydrology (agriculture) , benthic zone , mineralogy , fishery , biology , geotechnical engineering , telecommunications , engineering , detector
A hydraulically operated device for obtaining cores 30.5 cm in diameter and up to 46 cm long is described. The corer is able to penetrate firm bottoms but is unsuited for water depths greater than 4 m. The corer was compared with a van Veen grab sampler in three substrate types in the Newport River estuary, N.C. In each case the corer yielded higher estimates of standing crops of macro‐invertebrates than the grab sampler; it also sampled deep‐dwelling invertebrates not sampled by the grab.