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Trophic Interactions Among Chlorostoma Brunnea, Macrocystis Pyrifera, And Fungi, Selena Mcmillan
Trophic Interactions Among Chlorostoma Brunnea, Macrocystis Pyrifera, And Fungi, Selena Mcmillan
Master's Theses
The purpose of this study was to evaluate how one of the most abundant kelp forest herbivores in central California, the trochid snail Chlorostoma brunnea, affects the productivity and survivorship of the giant kelp Macrocystis pyrifera within central California. The effects of this turban snail species were investigated using experimental field manipulations of snail abundance on Macrocystis sporophytes and supplementary laboratory experiments. Experimental field manipulation of C. brunnea densities (0-450 snails per sporophyte) revealed an overcompensation of growth by Macrocystis in response to moderate snail densities. This finding is consistent with a terrestrial growth premise, the Grazing Optimization Hypothesis. …
Ecology Of Foothill Yellow-Legged Frogs In Upper Coyote Creek, Santa Clara County, Ca, Thomas Earl Gonsolin
Ecology Of Foothill Yellow-Legged Frogs In Upper Coyote Creek, Santa Clara County, Ca, Thomas Earl Gonsolin
Master's Theses
Visual encounter surveys, mark-recapture technique, and telemetry were used investigate breeding, movement, growth, habitat preferences, and predators of foothill yellow-legged frogs on Coyote Creek in Santa Clara County, California, from March 2004 to March 2006. The main stem and tributaries were intermittent in summer in all three years. Thermal conditions for breeding initiation were alike during 2004, 2005, and 2006. Breeding occurred in the main stem on descending limbs of the hydrograph. No breeding occurred in the middle main stem reach, which is ephemeral. Breeding occurred at less than an order of magnitude greater than base flows. Typically, larger females …