1,168 research outputs found
A survey of the marine environment near the city of Monterey ocean outfall
Get PDFThe California Department of Fish and Game and the State Water Resources Control Board (through Regional Board #3, Central Coast) entered into an agreement whereby Department biologist-divers conducted a subtidal
ecological investigation of the marine environment in the vicinity of the City of Monterey ocean outfall. The objective of the study was to provide the Regional Water Quality Control Board with data to assist them in evaluating the effects of the discharge on the marine environment.
The determinations made by biologist-divers included: (i) the number and diversity of the plant and animal life; (ii) substrate characteristics; and (iii) physical parameters, including water temperature, dissolved oxygen levels and clarity. Additionally, benthic samples were
obtained by the divers and/or by a Ponar grab at each station.
The State Water Resources Control Board reimbursed the Department for part of the expenses incurred during this study. (27pp.
A review of California sea otter, Enhydra lutris, surveys
Get PDFRecent surveys (1977 to 1983) of the sea otter, Enhydra lutris, in California were summarized and compared to past surveys, to evaluate the adequacy of current survey design and to-make inferences about current population status.
Ground counts within selected index areas provided the best
indicator of population trends. These data suggest a rather
remarkable stability in the long-term occupied range. Rangewide aerial surveys with ground truth stations provided the best available data for estimating total population size. The most recent (1979) survey yielded a population estimate of approximately 1500 sea otters. Comparisons with past surveys suggest there have been no demonstrable changes in population size since at least 1976. (34pp.
A simulated translocation of sea otters, Enhydra lutris, with a review of capture, transport and holding techniques
Get PDFA number of techniques and pieces of equipment judged necessary for the translocation of sea otters were field
tested. Captures were accomplished with either a scuba diver operated capture device (Wilson trap), a surface set tangle net or a dip net. A portable floating pen proved very
satisfactory for simultaneously holding at least ten otters for several days. Commercially available pet transport kennels, with the capability of holding water, were adequate for maintaining the otter's pelage in good condition during a transport of approximately five hours duration. Subsequent observations indicated no apparent stress related dispersal. (17pp.
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