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.
Results
Showing 1 to 20 of 35 for “"Population estimate"”.
-
An Evaluation of Deer and Pronghorn Surveys in South Dakota
… americana), wildlife managers must identify population perimeters, sample size, age and sex ratios of these three species. The primary objective of this study was to evaluate age and sex ratios and determine a minimum sample size for each study area for all deer species and pronghorn, in …
-
Estudo dos parâmetros biométricos de Melipona scutellaris Latreille, 1811 (HYMENOPTERA: APIDAE) em diferentes estações do ano no brejo paraibano
… height (HF), breeding cell height (HC) and population size POP). For the statistical analysis of the data, the completely randomized design (DIC) was applied, with the Tukey averages test at 5% of probability, by the statistical program THE SAS SYSTEM. There was a significant difference for …
-
NORTHERN RIVER OTTER POPULATION ASSESSMENT AND CONNECTIVITY IN WESTERN MONTANA
… is known about their movement patterns or how populations are structured on the landscape. Otters are sensitive to degradation of aquatic systems, mostly due to loss of prey. This is evident in the Upper Clark Fork River (UCFR), Montana, which has been polluted from decades of mining activity. …
-
NORTHERN RIVER OTTER POPULATION ASSESSMENT AND CONNECTIVITY IN WESTERN MONTANA
… is known about their movement patterns or how populations are structured on the landscape. Otters are sensitive to degradation of aquatic systems, mostly due to loss of prey. This is evident in the Upper Clark Fork River (UCFR), Montana, which has been polluted from decades of mining activity. …
-
Calling ecology of micro frogs (Microbatrachella capensis): a case study using acoustic spatial capture recapture
… declining, increasing the demand for monitoring populations of many threatened amphibians, including the South African Critically Endangered micro frog (Microbatrachella capensis). I attempted to improve ongoing monitoring efforts by determining the calling ecology of the micro frog population on …
-
Family Acculturation and Asthma Outcomes in Latino Children
… (child).</p> <p><em>Results:</em> An annual population estimate of 237,802 children reported having an asthma diagnosis by a doctor and among such a population, 98,908 had an asthma attack in the past 12 months. Among those diagnosed with asthma, an annual population estimate of 99,013 …
-
Isolating and Identifying Fungal Endophytes from Roots of Rare Orchid Cypripedium arietinum in Grand Sable Dunes, Michigan
<p>Recently the population of <em>Cypripedium arietinum</em> in Grand Sable Dunes, Michigan was estimated at more than 3.5 million plants, greater than 90% of the world’s known population. There is little research on this species’ root associated fungal endophytes. This new population estimate …
-
ESTIMATING GIRAFFE (GIRAFFA CAMELOPARDALIS) POPULATION SIZE AND SURVIVAL RATES IN SOUTH LUANGWA VALLEY, ZAMBIA
<p>Giraffe populations across their range have declined significantly over the past 40 years. Recent studies of these declines noted that conservation efforts often lack basic population estimates and descriptions of demographic parameters such as sex- and age-specific survival rates. I addressed …
-
Estimation procedures for repeated surveys
… been proposed. The practice of surveying a population at regular intervals, to provide timely estimates of characteristics changing over time and the effects of changing conditions, have been of interest throughout the relatively short history of the sample survey method. As long ago as …
-
Estimation procedures for repeated surveys
… been proposed. The practice of surveying a population at regular intervals, to provide timely estimates of characteristics changing over time and the effects of changing conditions, have been of interest throughout the relatively short history of the sample survey method. As long ago as …
-
Population Estimates, Demography, and Habitat Assessment of the Pearl River map turtle (Graptemys pearlensis) in the Pearl River Drainage of Mississippi
… novelty as a species, no rigorous site-specific population estimates of <em>G. pearlensis</em> in Mississippi have been conducted. The primary goal of this study was to implement a replicable method of assessing the population of <em>G. pearlensis</em> throughout the Pearl River drainage system …
-
Estimating Black Bear Population Size, Growth Rate, and Minimum Viable Population Using Bait Station Surveys and Mark-Recapture Methods
… intended to be used as an index to follow bear population trend over time. We compared the bait station visitation (black bear visitation) to black bear harvest and mast surveys 1999 = 2002. The mean bait station visitation rate during 1999 - 2002 was 15.3% (SE = 2.89, n = 4). The number of …
-
Model Validation and Improvement Using New Data on Habitat Characteristics Important to Forest Salamanders, and Short-Term Effects of Forestry Practices on Salamander Movement and Population Estimates
… are compatible with maintaining healthy populations of forest amphibians. I tested previously created habitat models that determined the most important habitat characteristics for salamanders. I counted salamanders in 240 10 x 10 m plots located in the MeadWestvaco Wildlife and Ecosystem …
-
Snapping Turtle Life History on Lacreek Refuge, South Dakota
Investigations of the snapping turtle population on Lacreek National Wildlife Refuge in south-central South Dakota were conducted during 1965-67. Turtles captured by trapping, “hooking”, boxing nests and catching nesting females were measured, marked and released. Turtles were marked by …
-
Understanding the impacts of exploitation and fragmentation on the upstream migrating, adult river lamprey (Lampetra fluviatilis [L.]): implications for conservation
… negative impacts are observed on numerous fish populations, especially anadromous species.Currently, there is a dearth of knowledge of river lamprey migration in the Humber catchment, one of the UKs largest river lamprey populations and home to the main English lamprey fishery. Consequently, …
-
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
… Zanzibar Island, Tanzania, suggest separate populations around the north and south coasts. However, most research around the island has focused on the south coast, and movement of dolphins around the coastline is poorly understood. Photographic identification data, consisting of dorsal fin …
-
EVALUATION AND APPLICATION OF POPULATION SIZE ESTIMATORS TO ASSESS BROOK TROUT (SALVELINUS FONTINALIS) RESPONSE TO A NON-NATIVE SALMONID REMOVAL IN A SMALL MICHIGAN COLDWATER STREAM
… Great Lakes since the 1870s and now naturalized populations use tributary environments to reproduce and for their juvenile life stage. Historically, brook trout were the only salmonid to inhabit the tributary environment and numerous studies suggest that exotic salmonids negatively affect brook …
-
The molecular basis of thalassaemia in Sri Lanka
… 2.3% and 0.8% respectively. With the present popUlation estimate at 18.6 million, it is predicted that approximately 2650 patients with l3-thalassaemia major and 956 with HbE/I3-thalassaemia should consume >5% of the current health budget for treatment of these patients. Patients with the …
Page 1 of 2