Radioactivity and its relationship to oceanic food chains

Gamma-ray spectra of some primary producers (single-cell plants), filter-feeding herbivores, and carnivores, assigned to trophic levels I, II, and III–V, respectively, were prepared from marine samples taken in the Pacific off Oregon during 1961–1962. These organisms had been exposed in their natural environment to both fission produ cts from fallout and neutron-induced radionuclides from reactors on the Columbia River...

Energy conversion and element transfer in lower trophic levels in the marine environment

Studies on elemental and energy transfer in lower trophic levels in the marine environment were initiated in July 1962 after receipt of AEC contract AT(45-1)1751. It should be pointed out that this report covers only a six-month period, because for bookkeeping purposes the contract was made retroactive to 1 April 1962, at the request of the contractor

Phytoplankton : grass of the sea

Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the Sea Grant Catalog: http://seagrant.oregonstate.edu/publication