Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Population recovery"”.
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The Dynamics of Wave-Driven Reef Pass Jets and Coral Population Recovery on an Island
… transport coral and fish larvae between populations, and moderate temperatures. On many reefs, wave-driven or tidal flow through reef passes is the dominant mechanism of exchange with the open ocean. The fate of the jet as it flows onto the forereef slope, however, is understudied. In …
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Gulf Sturgeon (<i>Acipenser oxyrinchus desotoi</i>) Pre-Restoration Occupancy Patterns on Ship Island, Mississippi Sound with an Evaluation of Designated Critical Habitat Use by Eastern and Western Population Segments
… anadromous Gulf Sturgeon (GS) to aid in population recovery. This study examined GS occupancy, habitat use, and movement through critical habitat monitored by the Ship Island (SI) acoustic array during overwintering periods from 2011 to 2015 prior to MsCIP SI restoration. An occupancy …
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Spatial and predictive foraging models for gray bats in northwest Georgia and a comparison of two acoustical bat survey techniques
… occupied by gray bats have proved beneficial to recovery. Specific gray bat foraging area characteristics also are critical to gray bat population recovery and maintenance. In summer 2000 and 2001, I determined gray bat presence/absence with Anabat II acoustic bat detectors in potential foraging …
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'As Dry Leaves That Before The Wild Hurricane Fly': Negotiating Risk And Reality In The South Carolina Hurricanes Of 1752, 1893, And 1989
… and built environments, impact on the human population, recovery efforts undertaken, and the outcomes of these measures.</p> <p>DISS_para>Also explored in the context of the three hurricanes is the role of community, expressed in a common understanding and practice of benevolence toward those …
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Recovery of Oregon Coast Coho Salmon (Onchorhynchus kitsutch) through Restoration of Freshwater Habitats
<p>Pacific salmon populations are significantly lower than historic levels on the Western Coast of the United States. The Oregon Coast coho salmon Evolutionary Significant Unit (ESU) was listed as threatened under the Endangered Species Act in February 2008. The total number of adult coho salmon …
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Movement ecology and fisheries bycatch risk of albatross and large petrel species from Bird Island, South Georgia
… with far-reaching consequences for fitness, population dynamics and conservation. Oceanic seabirds are some of the most mobile and threatened species on Earth, mainly because of incidental mortality (bycatch) in fisheries. Tracking these birds has improved our knowledge of how the environment …
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Testing of a standardised protocol for visual health assessment of southern right whales (Eubalaena australis)
… Africa). These studies have indicated a strong recovery of the species post-whaling. However, in most recent years, a decrease was observed in reproductive rates and coastal prevalence of the South African population, raising concerns about continued population recovery. As reproductive success …
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Investigating single and multiple species fisheries management: stock status evaluation of hammerhead (Sphyrna spp.) sharks in the western North Atlantic Ocean and Gulf of Mexico
… stocks, and the complex were overfished (below population size associated with maximum sustainable yield (MSY)), and overfishing (fishing level above that associated with MSY) occurred in 2005. We found that scalloped hammerhead shark population recovery is likely to occur within 10 years if …
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Analysis of Cisco (Coregonus artedi) Populations in Eastern Lake Ontario
… assessment of the current status of this population. This thesis focusses on two distinct topics, each related to a distinct natural history characteristic of the ELO Cisco population that could represent a factor limiting population recovery in this region: fisheries-induced alterations …
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A mechanistic understanding of the postantibiotic effect and treatment strategies
… resistance, bacteria often utilize a number of population-level behaviors to survive antibiotic treatment. This is referred to as collective antibiotic tolerance (CAT). Taken together, antibiotic resistance and tolerance have led to the re-emergence of infectious diseases throughout the world. …
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Analyses of Greater Sage-Grouse (Centrocercus urophasianus) Translocation Release Methods and Chick Survival in Strawberry Valley, Utah
… of Greater Sage-Grouse may be responsible for population declines. Recent technological advances in micro-transmitters have made radio-telemetry studies on Sage-Grouse chicks more common. Radio-telemetry enables monitoring of individual chicks and broods during a critical period of their life …
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Effects of Forest Regeneration Methods on Salamander Populations in Central Appalachia
… However, the length of time that salamander populations remain depressed following forest harvesting and factors limiting population recovery have been a source of controversy in the literature and are the goal of this dissertation. As part of the Southern Appalachian Silviculture and …
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Understanding and mitigating vulnerable bycatch in southern African longline and trawl fisheries
… been widely held responsible for their declining population s and threatened conservation status. This thesis addresses the issue of bycatch in a holistic manner, taking into account that species, whether they be target or non-target, do not exist in isolation from each other and their …
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Effects of insecticides on potato leafhoppers Empoasca fabae (Harris) and its predators
… were tested to detect effects on the populations of the insects. Finally, LC₅₀ toxicities of selected insecticides were investigated under laboratory conditions. In the predation tests, two studies were conducted, namely, predation on egg stage and predation on nymphal and adult stages …
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Can sociality buffer the impacts of climate change on a cooperatively-breeding bird, the southern pied babbler Turdoides bicolor?
… climate regimes are affecting animal populations everywhere and understanding how species respond to current environmental variability is important for predicting vulnerability to climate change over longer timescales. Species living in characteristically harsh and unpredictable arid …
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Using movement modelling to improve the design and analysis of vantage point surveys in bird and wind energy studies
… behaviours, low manoeuvrability, and their slow population recovery rates. The focus of this thesis is on the identification of areas that are intensively used by soaring birds in order to inform wind turbine placement and minimize collision risk. This thesis is particularly concerned with …
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An Evaluation of Population Restoration and Monitoring Techniques for Freshwater Mussels in the Upper Clinch River, Virginia, and Refinement of Culture Methods for Laboratory-Propagated Juveniles
From 2006-2011, four population reintroduction techniques were applied to three sites within a reach of the upper Clinch River in Virginia designated suitable for population restoration of the federally endangered oyster mussel (Epioblasma capsaeformis). These techniques were: 1) translocation of …
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Trophic ecology of an introduced, land-locked alewife (Alosa pseudoharengus) population and assessment of alewife impact on resident sportfish and crustacean zooplankton communities in Claytor Lake, Virginia
Analysis of trophic and population ecology of an introduced (1968- 1969) alewife forage base and resident sportfishes (age 0 and older) indicated several negative trophic interactions within the community complex of Claytor Lake, Virginia. Alewife piscivority represents a potentially significant …
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Nestbox use and predicted distribution of the southern greater glider (Petauroides volans) following the Black Summer megafires.
… effectiveness of nestboxes as a post-fire recovery tool for the southern greater glider. Nestboxes were purpose built and installed at sites within Tallaganda National Park and State Conservation area, New South Wales and within the forests of the East Gippsland region, Victoria. I …
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Nestbox use and predicted distribution of the southern greater glider (Petauroides volans) following the Black Summer megafires.
… effectiveness of nestboxes as a post-fire recovery tool for the southern greater glider. Nestboxes were purpose built and installed at sites within Tallaganda National Park and State Conservation area, New South Wales and within the forests of the East Gippsland region, Victoria. I …
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