The results of a preliminary experiment suggested that a complexed
form of cobalt was more efficacious in promoting growth of a
marine phytoplankton than ionic cobalt. The phytoplankton used in this
experiment was Coccolithus huxleyi, a vitamin B₁₂ producer, and the
cobalt complex was cobalt (II)- ethylenediaminetetracetic acid [Co(II)-
EDTA]....
The migrations, distribution, and feeding of American shad, Alosa
sapidissima (Wilson), were studied from February 1980 through January
1981 in the Columbia River Estuary, an important rearing zone for
young-of-the-year shad. Sampling was performed with purse seine,
beach seine, and otter trawl.
Adult shad and large numbers of juveniles from...
The behavior of the shore crab Hemigrapsus oregonensis was assessed
with and without exposure to polychlorinated biphenyls (Aroclor 1260).
After describing the crab's behavioral repertoire, activity budgets were
developed from observations of the time crabs spent in 20 categories of
shelter use, posture, and activity while held in habitat replicas...
Specimens of Citharichthys stigmaeus, the speckled sanddab,
were taken from Yaquina Bay, Newport, Oregon and exposed for
eight days to dissolved measured concentrations ranging from 2.9
μg/l to 190 μg/1 of the polychlorinated biphenyl, Aroclor® 1260.
Oxygen consumption was measured to determine any change from
routine levels of respiration. This...
Mysids were sampled seasonally from the intertidal
zone of the beach to a depth of 61 m offshore along the
mid-Oregon coast. The seven mysid species collected
occurred in characteristic bathymetric zones, with members
of different genera occupying overlapping zones
while members of the same genus occupied largely different
zones....