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Filtering by: Committee Member Hall, Jim Committee Member Schafer, Dan

Succession and stability in two rocky intertidal communities on the central Oregon coast

Creator:

Farrell, Terence M.

Abstract:

The stability of a limpet-dominated community was assessed in a experiment in which an consumer was temporarily removed. Compared to unmanipulated plots, the limpet-exclusion plots developed greater algal abundance and altered species composition of both algae and barnacles. The community was not perturbed beyond its capacity to recover, since the...

Resource Type:

Dissertation
Effects of sampling design, estimators, and variability on groundfish management in Oregon

Creator:

Crone, Paul R. Jr

Abstract:

Sampling error associated with estimates of species composition and age composition of commercial groundfish landings in Oregon from 1989 to 1991 is documented to evaluate the impact of variable landing data on fisheries management and monitoring programs. The statistical reliability and bias associated with two multistage sampling designs are investigated...

Resource Type:

Dissertation