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Full-Text Articles in Terrestrial and Aquatic Ecology
Human Trampling In The Upper Rocky Intertidal: Trampling And Recovery In Barnacle Mediated Succession, Timothy Lawrence Grubba
Human Trampling In The Upper Rocky Intertidal: Trampling And Recovery In Barnacle Mediated Succession, Timothy Lawrence Grubba
Dissertations and Theses
Marine intertidal ecosystems are vulnerable to human interference,
because trampling can be a significant problem. I studied the impacts of
trampling on community patterns and succession in a rocky intertidal
habitats. This study was divided into two phases: ( 1) a trampling phase and
(2) a recovery phase. Both phases are focused on two barnacles, Balanus
glandula and Chthamalus dalli, and on fucoid and red algae. The trampling
phase tested the effects of trampling on these organisms. The effects of
herbivores, primarily limpets (Collisella digitalis) were also tested to
determine whether anthropogenic (trampling) and natural (herbivory and
limpet bulldozing) disturbances …
The Distribution Of Zooplankton In Selected Oregon Lakes, Mary Elizabeth Claska
The Distribution Of Zooplankton In Selected Oregon Lakes, Mary Elizabeth Claska
Dissertations and Theses
Zooplankton samples were collected from 166 Oregon lakes. The lakes included a wide range in size, trophic status, and water quality. Lakes were located throughout the state. Zooplankton were identified using standard taxonomic keys and counted. Seventy-four species were identified from the 200 total samples, including 32 species of cladocera, 22 copepods, and 11 rotifers. Two species of copepod were recorded for the first time in Oregon: Diaptomus mississippiensis and Diaptomus pallidus. Seven species had widespread distributions throughout most of the watersheds in the state. Seventeen other species had distributions restricted to eastern, central, or western Oregon. The remaining …