Index Catalog // ScholarsArchive@OSU

Behavior and Ecological Effects of Invasive Lionfish on Atlantic Coral Reefs and Seagrass Beds

Creator:: Benkwitt, Cassandra E.
Abstract:: Although only a minority of introduced species become established and have noticeable consequences in their new communities, some can displace native species, alter food webs, and cause local extinctions. Studying these invasive species can provide new insights into basic ecological questions as well as inform management strategies. Pacific lionfish (Pterois...
Resource Type:: Dissertation
Full Text:: intraspecific competition for food. The foraging movements of lionfish may also have implications for which

Invasive Pacific Lionfish Alters Native Community Interactions on Atlantic Coral Reefs

Creator:: Kindinger, Tye L.
Abstract:: Biological invasions have been identified as one of the prominent drivers of global environmental change. In particular, invasive predators typically have substantial negative effects on populations of native prey, even driving species to extinction in extreme cases. However, beyond direct predatory effects, little is understood regarding the specific mechanisms by...
Resource Type:: Dissertation
Full Text:: whether invasive lionfish alter competition between native prey fishes, I then performed a manipulative

Stability and complexity : a reappraisal of the Competitive Exclusion Principle

Creator:: Duran, Israel N.
Abstract:: Elton (1927) realized that, intuitively at least, nature was complex and stable. And that the last property contributed to the first. This idea was challenged mathematically by Gardner and Ashby (1970) and May (1972), and in the years following various models have attempted to reconcile these opposing views. Unlike previous...
Resource Type:: Masters Thesis
Full Text:: 3.4 Interference competition between species 2 and 3 produces a system that is Figure 3.5 With a

Territorial behavior in juvenile steelhead trout (Oncorhynchus mykiss) : how redside shiner (Richardsonius balteatus) influence intraspecific interactions

Creator:: Tinus, Craig A.
Abstract:: Juvenile steelhead are known to associate with shiner groups, though they also compete for food. Steelhead form dominance hierarchies within cohorts and aggressively defend feeding territories against all other fish. This study focused on the differential effect of shiner competition on steelhead of different social standing. Survival of subordinate juvenile...
Resource Type:: Masters Thesis
Full Text:: competition on steelhead of different social standing. Survival of subordinate juvenile steelhead was

Computer simulation of animal population dynamics

Creator:: Milne, David M., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: Two major objectives were accomplished. 1. A summary of the work done during 1970-71 on a single species intra-specific competition model was written. 2. A multispecies predator-prey model, incorporating the competition mechanism of the single-species model, was developed almost to completion. The single species model is a computer program that...
Resource Type:: Technical Report
Full Text:: accomplished. 1. A summary of the work done during 1970-71 on a single species intra-specific competition

Experimental analysis of intra- and interspecific competitive interactions between cutthroat trout and sculpins in small streams

Creator:: Ramirez, Ben S.
Abstract:: In the Pacific Northwest ecoregion of North America, sculpins represent a major constituent of freshwater assemblages in coastal rivers. Based on their prevalence and abundance, sculpins are likely important ecologically, yet little is known of their interactions with co-occurring species, such as widely studied salmon and trout (salmonines). In this...
Resource Type:: Masters Thesis
Full Text:: represent a behavior that minimizes interspecific competition with cutthroat trout

The range expansion of the northern barred owl : an evaluation of the impact on spotted owls

Creator:: Kelly, Elizabeth G.
Abstract:: Since their range expansion into the Pacific Northwest, anecdotal evidence suggests that northern barred owls (Strix varia varia) may be displacing northern spotted owls (Strix occidentalis caurina). My objectives were to characterize barred owl distribution and population increase in Oregon, investigate spotted owl territory performance before and after barred owl...
Resource Type:: Masters Thesis
Full Text:: owls on the long-term viability and persistence of spotted owls. Three types of competition are

The effects of harvesting Pacific hake (Merluccius productus) on the offshore community : the results of a multi-species model

Creator:: Gartz, Russell G.
Abstract:: The effects of harvesting Pacific hake (Merluccius productus) were examined with a multi-species numerical model composed of seven logistic growth equations coupled by a food web. The food web was composed of: California sea lions (Zalophus californianus), hake, sablefish (Anaplopoma fimbria), spiny dogfish (Squalus acanthias), a generic rockfish species (Sebastes...
Resource Type:: Masters Thesis
Full Text:: competing organisms (exploitation competition, Begon et al., 1990). Other problems involve estimating the

Foraging Niche Separation of Adélie (Pygoscelis adeliae) and Gentoo (P. papua) Penguins During the Breeding Season at Palmer Station, Antarctica

Creator:: Pickett, Erin
Abstract:: Climate-induced range overlap can result in novel interactions between similar species and potentially lead to competitive exclusion. The Western Antarctic Peninsula is one of the most rapidly warming regions on Earth and is experiencing a poleward climate migration. This transition from a polar to sub-polar environment has resulted in a...
Resource Type:: Masters Thesis
Full Text:: : reduced competition with whales or a loss of sea ice due to environmental warming? Polar Biology, 11

Effects of kokanee (Oncorhynchus nerka) redd superimposition on bull trout (Salvelinus confluentus) reproductive success in the Deschutes River Basin, Oregon.

Creator:: Weeber, Matthew A.
Abstract:: Oregon's only remaining non-reservoir population of adfluvial bull trout (Salvelinus confluentus) is found in Odell Lake, in the headwaters of the Deschutes River. The population size is unknown, but appears to be quite small. Limited spawning and rearing habitats, combined with the effects of introduced species and other anthropogenic changes...
Resource Type:: Masters Thesis
Full Text:: one of the premier kokanee fisheries in the Northwest (USFS 1999). The increased competition caused

ScholarsArchive@OSU

Behavior and Ecological Effects of Invasive Lionfish on Atlantic Coral Reefs and Seagrass Beds

Invasive Pacific Lionfish Alters Native Community Interactions on Atlantic Coral Reefs

Stability and complexity : a reappraisal of the Competitive Exclusion Principle

Territorial behavior in juvenile steelhead trout (Oncorhynchus mykiss) : how redside shiner (Richardsonius balteatus) influence intraspecific interactions

Computer simulation of animal population dynamics

Experimental analysis of intra- and interspecific competitive interactions between cutthroat trout and sculpins in small streams

The range expansion of the northern barred owl : an evaluation of the impact on spotted owls

The effects of harvesting Pacific hake (Merluccius productus) on the offshore community : the results of a multi-species model

Foraging Niche Separation of Adélie (Pygoscelis adeliae) and Gentoo (P. papua) Penguins During the Breeding Season at Palmer Station, Antarctica

Effects of kokanee (Oncorhynchus nerka) redd superimposition on bull trout (Salvelinus confluentus) reproductive success in the Deschutes River Basin, Oregon.

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