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 14 of 14 for “"sampling intensity"”.
-
Increasing the efficiency of multiple-use inventory procedures
… decisions. Once the variables have been defined, sampling intensity must be determined. The decision-maker was not required to define the sampling intensity based on experience or a rule-of thumb, but rather a cost-loss function for multiple inventories and multiple decisions was minimized. The …
-
Defining rarity and determining the mechanisms of rarity for North American freshwater fishes
… three dimensions. Next, I examined the effect of sampling intensity on observed rarity of stream fish using different numerical and proportional rarity criteria and found that increasing sampling intensity increased the number of species labelled as rare with proportional criteria but did not …
-
A Floristic Study of Ha Ha Tonka State Park, Camden County, Missouri
… Hollow, but this could simply represent a higher sampling intensity. Each of these savannas is probably fairly representative of the natural savanna communities thought to have covered much of the Ozarks landscape when the first western settlers arrived.
-
Evaluation of sampling methodologies for assessing fish species richness in ridge and valley streams in Chattanooga, Tennessee
… objectives were to determine the effects of the sampling season, reach length, habitat sequences surveyed, and sampling intensity on estimates of fish species richness. Fish assemblages were sampled at 18 sites across five streams in the Chattanooga, Tennessee area, May-June (spring) and …
-
Evaluating the Value of Information Concerning Different Methods of Forest Sampling
… However, the compromise made between the cost of sampling methods during inventory, and the accuracy of the information gathered has not been fully recognized. This study evaluates the value of information across multiple sampling methods and intensities. The objectives focus on 1) evaluating …
-
Mapping the countryside: information for policy and management
… an increase in within-land class sampling intensity or stratification and the further development of the LCMGB. The problems faced in integrating, analysing and using available geographic data are considered and conclusions presented
-
Efficient Sampling Methods for Forest Inventories and Growth Projections
… With time and costs constraints, appropriate sampling designs and models are required to perform the inventory efficiently, as well as to obtain reliable estimates for the variables needed to make projections. In this dissertation research, a simulation study was conducted to extensively …
-
Ecological patterns, community classification, and a comparison of approaches for predicting biological and habitat reference conditions in New Hampshire streams
… spate than the macroinvertebrates. Greater sampling intensity in the field and laboratory are probably the only remaining avenues for increasing assessment accuracies and reducing unexplained variation in reference conditions.</p>
-
Do we know enough? The impacts of data biases, insufficient sampling and degradation on biodiversity estimates in Tanzanian forests – implications for conservation planning
… capture the true patterns. Funding, botanist and sampling intensity biases, which are circularly linked, may partly explain why despite decades of research surprisingly little consensus has been reached on patterns in biodiversity. In the study area, these effects account for a substantial …
-
Effects of a Riverine Dispersal Barrier on Cultural Similarity in Wild Bornean Orangutans (Pongo Pygmaeus Wurmbii)
… applying rigorous controls for variation in sampling intensity for individual orangutans, several differences in innovative behaviors exhibited at each site were identified, many of which occurred in the nesting context.</p><p>The orangutan is a model taxon for such an investigation, because …
-
The relationships between the forest fuels and vegetation of Richmond National Battlefield Park, Virginia
… their usefulness would depend on the level of sampling intensity and precision one would want to expend to get an estimate of fuel loading in a stand. If a rough estimate requiring little time in the field is desirable, then these regressions would be useful.
-
Multi-scale analysis of carbon stocks and process indicators in the agro-ecosystem of Canterbury, New Zealand
… Using this knowledge to determine appropriate sampling intensity, I quantified carbon stocks and processes within shelterbelts across 34 farms, focussing particularly on understanding how within-shelterbelt-scale (e.g. soil moisture, pH), shelterbelt-scale (e.g. shelterbelt type, age, and tree …
-
Systematics and Species Delimitation in New Guinea Skink Species Complexes (Squamata: Scincidae)
… To investigate the influence of factors such as sampling intensity, species richness, and phylogenetic structure on discovery methods for species delimitation, I combine simulated and empirical data. In Chapter 1, I use simulated data to examine the accuracy of three discovery methods for species …
-
Using a new monitoring framework for Regional Councils to assess the integrity of prioritised ecosystems in Hawke’s Bay farmland : A thesis submitted in partial fulfilment of the requirements for the Degree of Masters of Applied Science at Lincoln University
The long-term sustainability of biodiversity in small native forest fragments on privately-owned lowland rural land is threatened by agricultural intensification, introduced pests, inadequate fencing, and species-area effects. Biodiversity monitoring of private land plays an essential role in …