Index Catalog // ScholarsArchive@OSU

Role of priority effects and habitat complexity in coral-reef fish communities

Creator:: Almany, Glenn R.
Abstract:: Understanding the processes that influence the composition of animal communities is a central goal in ecology. Interactions between established residents and colonizing juveniles that affect the subsequent survival of juveniles may influence community composition. In a series of experiments on coral reef fish communities in the Bahamas and Australia, I...
Resource Type:: Dissertation
Full Text:: Complexity in Coral-Reef Fish Communities by Glenn R. Almany A DISSERTATION submitted to Oregon State

Factors affecting the dynamics and regulation of coral-reef fish populations

Creator:: Webster, Michael Scott
Abstract:: Ecologists have long questioned why fluctuating populations tend to persist rather than go extinct. Populations that persist indefinitely are regulated by mechanisms that cause demographic density dependence, which works to bound fluctuation above zero. In a series of studies, I have sought to determine the processes and mechanisms that regulate...
Resource Type:: Dissertation
Full Text:: Dynamics and Regulation of Coral-reef Fish Populations Abstract approved: MarK A. 1-lixon Ecologists have

Effects of the invasive Pacific red lionfish Pterois volitans on native Atlantic coral-reef fish communities

Creator:: Albins, Mark A.
Abstract:: Predatory lionfishes (Pterois volitans and P. miles) were introduced to Florida waters during the mid to late 1980s, and eventually established self-sustaining breeding populations in the tropical western Atlantic. These invasive species are now widespread along the southeastern seaboard of the United States, across the Caribbean Sea, and in the...
Resource Type:: Dissertation

Selection on larval and adult body size in a marine fish: potential evolutionary responses and effects on population dynamics

Creator:: Johnson, Darren W.
Abstract:: Many species have complex life cycles in which a dispersive larval stage is followed by a relatively sedentary adult stage. For such species, reproductive output is often high and large variation in survivorship throughout early life-history phases (eggs and larvae) can lead to dramatic fluctuations in recruitment which may in...
Resource Type:: Dissertation
Full Text:: Zoology presented on August 6, 2009. Title: Selection on Larval and Adult Body Size in a Marine Fish

Population dynamics of coral-reef fishes : spatial variation in emigration, mortality, and predation

Creator:: Overholtzer-McLeod, Karen L.
Abstract:: Understanding the dynamics of open marine populations is difficult. Ecological processes may vary with the spatial structure of the habitat, and this variation may subsequently affect demographic rates. In a series of observational and experimental studies in the Bahamas, I examined the roles of emigration, mortality, and predation in the...
Resource Type:: Dissertation
Full Text:: -fish experiments, (2) demonstrate that the role of early post-settlement processes, such as predation

The role of oxygen and other environmental variables on survivorship, abundance, and community structure of invertebrate meroplankton of Oregon nearshore coastal waters

Creator:: Eerkes-Medrano, Dafne I.
Abstract:: The high productivity of Eastern Boundary Upwelling Ecosystems (EBUE), some of the most productive ecosystems in the globe, is attributed to the nutrient rich waters brought up through upwelling. Climate change scenarios for coastal upwelling systems, predict an intensification of coastal upwelling winds. Associated with intensification in upwelling are biogeochemical...
Resource Type:: Dissertation
Full Text:: of Invertebrate Meroplankton of Oregon Nearshore Coastal Waters. Abstract approved

Surfgrasses (Phyllospadix spp.) as dynamic foundation species for macroinvertebrates along the Oregon coast

Creator:: Moulton, Orissa M.
Abstract:: Foundation species are important components of ecosystems because they provide habitat and ameliorate stressful conditions for residents. This thesis considers the role of surfgrasses (Phyllospadix spp.) as dynamic foundation species on the coast of Oregon in two studies. Chapter 2, which presents an observational survey of two Phyllospadix congeners, investigates...
Resource Type:: Masters Thesis
Full Text:: Oregon Coast Abstract approved

Indirect effects of fishing on predators and their prey

Creator:: Stallings, Christopher Derek
Abstract:: Predators are fundamentally important for regulating and driving prey population dynamics as well as structuring ecological communities. Over-exploitation of marine resources has caused dramatic depletions of predatory fish species and shifts in marine community composition, with attendant declines in productivity and diversity of marine ecosystems. Despite the important ramifications of...
Resource Type:: Dissertation
Full Text:: predatory fish species and shifts in marine community composition, with attendant declines in productivity

Macroscale to local scale variation in rocky intertidal community structure and dynamics in relation to coastal upwelling

Creator:: Freidenburg, Tess L.
Abstract:: Understanding how large-scale processes (>100 kms) influence ecological communities is currently a major focus in ecology. In marine systems, coastal upwelling, a large-scale oceanographic process in which surface water pushed offshore by winds is replaced by cold, nutrient-rich water from depth, appears to cause variation in rocky intertidal communities. Along...
Resource Type:: Dissertation
Full Text:: central Oregon coast upwelling occurs intermittently during the summer while on the southern coast it

Grazing, nutrients, and marine benthic algae : insights into the drivers and protection of diversity

Creator:: Guerry, Anne D., 1973-
Abstract:: Two of the most powerful ways in which humans have altered ecosystems are by increasing productivity and changing the densities of important consumers. The bottom-up effects of productivity and the top-down effects of consumers have been identified as primary determinants of biological diversity, though the links between them remain unclear....
Resource Type:: Dissertation
Full Text:: , productivity, and diversity in rocky intertidal systems in Oregon and New Zealand. In two experiments I

ScholarsArchive@OSU

Role of priority effects and habitat complexity in coral-reef fish communities

Factors affecting the dynamics and regulation of coral-reef fish populations

Effects of the invasive Pacific red lionfish Pterois volitans on native Atlantic coral-reef fish communities

Selection on larval and adult body size in a marine fish: potential evolutionary responses and effects on population dynamics

Population dynamics of coral-reef fishes : spatial variation in emigration, mortality, and predation

The role of oxygen and other environmental variables on survivorship, abundance, and community structure of invertebrate meroplankton of Oregon nearshore coastal waters

Surfgrasses (Phyllospadix spp.) as dynamic foundation species for macroinvertebrates along the Oregon coast

Indirect effects of fishing on predators and their prey

Macroscale to local scale variation in rocky intertidal community structure and dynamics in relation to coastal upwelling

Grazing, nutrients, and marine benthic algae : insights into the drivers and protection of diversity

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