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Showing 1 to 20 of 175 for “"mark-recapture"”.
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Mark-recapture statistics and demographic analysis
Mark-recapture analysis of populations is becoming an important tool in population biology. Mark-recapture methods can be used to estimate transition probabilities among life-stages from capture histories of marked individuals for which stages can be determined at each sampling occasion. This …
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Mark-recapture statistics and demographic analysis
Mark-recapture analysis of populations is becoming an important tool in population biology. Mark-recapture methods can be used to estimate transition probabilities among life-stages from capture histories of marked individuals for which stages can be determined at each sampling occasion. This …
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Mark-Recapture Creel Survey and Survival Models
… rate of a fish population by combining mark-recapture procedures with a creel survey. We also consider the analysis of a proportional hazards survival model for randomly censored observations, known as the Koziol-Green model. The model assumes that the lifetime survivor function is a …
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Conservation Genetics and Mark-Recapture Monitoring of the Rare Pigeon Mountain Salamander (Plethodon petraeus) within a Highly Restricted Range
… flow, and habitat use patterns. Robust design mark-recapture methods and population genetics with cross- amplified microsatellites were used to further our knowledge of how this species is distributed. Mark recapture results indicated high site fidelity of recaptured salamanders and abundance …
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Estimating Black Bear Population Size, Growth Rate, and Minimum Viable Population Using Bait Station Surveys and Mark-Recapture Methods
… density of 0.055 adult females/km2. We used mark-recapture data collected from 148 individual bears (96 males:52 females) captured 270 times in program MARK to estimate survival using recapture, dead recovery, and Burnham's combined models. Adult females had the highest survival rate of …
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Investigating the potential for individually distinctive signature whistles to be used in mark-recapture of common bottlenose dolphins (Tursiops truncatus)
Mark-recapture is used to investigate the abundance, survival and social relationships and even individual-specific habitat use of a number of species. Several studies suggest that individually distinctive acoustic signals could be used in a mark-recapture framework. We investigated the potential …
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Using mark-recapture methods to estimate population size and survival of pyjama sharks (Poroderma africanum) in Mossel Bay, South Africa
… as a result of their biological characteristics. Markrecapture models were applied to conventional tag recapture data and acoustic telemetry data to estimate abundance, apparent survival, recapture probability and temporary emigration for the pyjama shark, Poroderma africanum in Mossel Bay, South …
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Investigation of population abundance, distribution, and population linkage of Indo-Pacific Bottlenose Dolphins (Tursiops aduncus) on the north and south of Zanzibar using mark-recapture and acoustic methods
… identification data was applied in a Mark-Recapture framework, using open population models, to generate abundance estimates of 149 (95% CI 128-173) and 120 (95% CI 97-149) individuals for the north and south coasts of Zanzibar respectively. As 16 individuals had moved from the south …
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NONINVASIVE GENETIC SAMPLING REVELAS BLACK BEAR POPULATION DYNAMICS DRIVEN BY CHANGES IN FOOD PRODUCTIVITY
… processes could influence inferences based on mark-recapture analysis. In cooperation with Idaho Department of Fish and Game and the USDA Forest Service, I used barb-wire corrals to collect black bear DNA during 2003-2006 in the Purcell Mountains of Idaho. We analyzed these DNA samples to …
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NONINVASIVE GENETIC SAMPLING REVELAS BLACK BEAR POPULATION DYNAMICS DRIVEN BY CHANGES IN FOOD PRODUCTIVITY
… processes could influence inferences based on mark-recapture analysis. In cooperation with Idaho Department of Fish and Game and the USDA Forest Service, I used barb-wire corrals to collect black bear DNA during 2003-2006 in the Purcell Mountains of Idaho. We analyzed these DNA samples to …
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Demographics of a seasonal aggregation of white sharks at Seal Island, False Bay, South Africa
… of extant species and provides live-encounter mark-recapture and data that are essential for management and conversation. White sharks occur throughout South African coastal waters but their centre of abundance is the Western Cape, where large sharks predominate at aggregation sites like Seal …
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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
… 2011 and 2012 by systematic quadrat and capture-mark-recapture sampling to assess reintroduction success, evaluate reintroduction techniques, and compare survey approaches for monitoring freshwater mussels. Estimates of abundance and density of translocated adults ranged from 450-577 individuals …
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Evaluation of estimators of population size based on simulation techniques
… a computer simulation model which mimics typical mark-recapture experiments and allows one the ability to examine existing estimators, determine the effect of alterations in the usual trapping experiment, and develop new estimators. Five mark-recapture estimators of population size were examined …
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Development and application of a multistate model to the northern subpopulation of loggerhead sea turtles
… a population model using 16 years of data from a mark-recapture study on the loggerhead sea turtle nesting population on Bald Head Island, North Carolina. The beach survey conducted on the island only allowed for the capture of adult female sea turtles during the breeding state even though females …
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Greater Galagos near Mt. Kasigau, Kenya: Population Density Estimates
… second method was to trap individuals and use mark-recapture to determine population density. When caught in a trap, individuals were also weighed and measurements were taken. Accurate weight was taken for 17 individuals; ear height, tail length, and hind foot length were recorded for 21 …
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Population Parameter Estimation and Stable Isotope Analysis of Gulf Sturgeon (Acipenser oxyrinchus desotoi) in the Pascagoula River
… by estimating population parameters through mark-recapture modelling and describing feeding habitat by stable isotope analysis for GS natal to the Pascagoula River. Pascagoula River GS were captured with anchored gill nets, tagged, and had blood and muscle samples taken between April–November …
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Using Neural Networks to identify Individual Animals from Photographs
… in various ways, but a very popular way is mark-recapture studies. Mark-recapture studies need a way of telling if a captured animal has been previously seen. For traditional mark-recapture, this is achieved by applying a tag to the animal. For non-invasive mark-recapture methods which …
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A Comparison of Wildlife Monitoring Techniques in Riparian Ecosystems of the Western United States
… methods: wildlife camera trapping, GPS devices, mark-recapture, fecal DNA surveying, circular plot point counts, mist-net transects and bird-banding, transect counts, and nest monitoring. The main objectives of wildlife monitoring include gaining data in species presence, absence and …
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Survival and reproduction in a biennially-breeding seabird : the Wandering Albatross
… life cycle has caused biases in conventional mark-recapture modelling analyses that assume that recapture probability is equal for 'observable' and 'unobservable' states of the biennial adult life cycle. During 'sabbaticals' taken after successful and late-failed breeding attempts, the chances …
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