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 192 for “"Microhabitat"”.
-
Microhabitat use and recolonisation in white-clawed crayfish: application to conservation
… and disease. This thesis investigates the microhabitat use of juvenile and adult white-clawed crayfish and quantifies the rate and pattern of recolonisation into an unoccupied reach of river. The microhabitat study was carried out over a 1 km stretch of the River Wansbeck, Northeast England …
-
Patterns of habitat, microhabitat, and body size distribution in a lizard assemblage.
… months of 1989, 1990, 1991, 1992, 2000 and 2001. Microhabitat characteristics surrounding capture points were recorded in 1990, 1992 and 2000, and captures were classified into one of two distinct habitats in 2001. All four species used dead trees more frequently than live trees, despite an …
-
Intertwined evolution of swimming, morphology and microhabitat in tree frogs from the subfamily Hylinae
… behavior and performance, both within multiple microhabitats for Neotropical tree frogs. The subfamily Hylinae includes 163 species; they have three main locomotion modes with a direct impact on species fitness: they jump, swim and climb. Convergences in morphotype and locomotion are primarily …
-
Microhabitat requirements of the great crested newt (<i>Triturus cristatus</i>) in a woodland area
… thesis aimed to increase our knowledge of the microhabitat use and ecology of great crested newts within a woodland area in the British Isles and suggest ways of improving measures for conservation. The study was conducted at Epping Forest Field Centre and surrounding deciduous woodland at High …
-
Distribution of leaf dissection and sclerophylly along microhabitat gradients in pteridophytes of the Cape peninsula
Plant species with small leaves and sclerophylls have been reported to occur mainly on dry, low-nutrient soils in situations of high insolation. However; a number of physiological functions have been proposed for the two sets of traits. Ferns are well-suited to the study of leaf structure and its …
-
Behavioural, microhabitat, and phylogenetic dimensions of intrasexual contest competition in combatant monkey beetles (Scarabaeidae: Hopliini)
The importance of sexual selection as a driver of evolution, from microevolution to speciation, has overwhelmingly been studied in the context of female choice, but there is evidence that male-male competition can also drive evolution. Recent reviews of the intrasexual competition literature have …
-
Microhabitat Temperature Variations and the Post-Burn Response of Vegetation in the Edwards Plateau of Texas
… Kerrville, Texas, to assess the impact of: (1) microhabitat differences in fuel load and fuel moisture on temperature and (2) microhabitat temperature variations on vegetational response. The results of this study indicate that fire temperatures are generally higher under tree canopies …
-
Small mammal microhabitat use and species composition at a wildlife crossing structure compared with nearby forest
Expanding transportation corridors have fragmented ecosystems throughout the world, restricting the movement of organisms or acting as complete connectivity barriers. Wildlife crossing structures (WCS) can increase the permeability of roads, allowing animals to move safely between habitats. Small …
-
Seasonal Microhabitat Use of Young-of-the-Year Bull Trout, Salvelinus Confluentus, in a Drought Year
This study examined the microhabitat use of young-of-the-year (YOY) bull trout, <em>Salvelinus confluentus, </em>throughout the summer and fall of 2015 in Gold Creek, a third order Cascade Mountain stream near Snoqualmie Pass, WA. It is crucial to understand YOY habitat requirements, as this life …
-
Microhabitat, microbiota, mitochondria and the epigenome shape the biparental legacy of heat exposure in a tropical arthropod
… iButton temperature loggers in three types of microhabitat, frass, side/south, and top/north over two types of trees, fallen and standing, in open canopy or closed canopy habitats. C. scorpioides were then collected from the trees to estimate abundance. Reduced abundance was associated with the …
-
Microhabitat Affinity of Blanchard's Cricket Frog (Acris crepitans blanchardi) in Rural and Urban Areas in Central Texas
… in these areas of disturbance. I investigated microhabitat affinity of Blanchard’s cricket frog to assess whether differences exist between urban and rural areas of central Texas. That is, I examined whether cricket frogs altered their use of microhabitats when in urban environments compared to …
-
Where the Zigzags go: a microhabitat analysis for the Plethodon dorsalis complex within the Tennessee River gorge
… a time based natural cover object survey method. Microhabitat is analyzed within 1 m² of each location containing a P. dorsalis specimen along an elevation gradient (250-300, 300-350 and 350-400 m). For each animal-present location, a randomly selected animal-absent plot is analyzed. This …
-
Variação espacial e temporal na estrutura do habitat e prefência de microhabitat por pequenos mamíferos na Mata Atlântica
… and temporal scales on habitat structure, and microhabitat choice by small mammals. First different concepts of habitat used were discussed through a brief historie, then a new definition of habitat distinguishing it from niche and biotipe concepts is presented. Therefore a new method to …
-
Microhabitat use and its effect on growth of age-0 smallmouth bass in the North Anna River, Virginia
This study examined the relationship between microhabitat use and growth of age-0 smallmouth bass in the North Anna River. The study objectives were to describe microhabitat use during summer, assess the profitability of microhabitats, and determine if and how microhabitat use could determine which …
-
The Effects of Microhabitat and Land Use on Stream Salamander Occupancy and Abundance in the Southwest Virginia Coalfields
… quantification of both large-scale land use and microhabitat alterations to ecosystems are a necessary first-step aid in mitigation of negative consequences to biota. In central Appalachian headwater streams absent of fish, salamanders are the dominant, most abundant vertebrate predator providing …
-
Behavioral Analysis of a Digenetic Trematode Cercaria (Microphallus Turgidus) in Relation to The Microhabitat of Grass Shrimp (Palaemonetes Spp.)
… Microphallus turgidus are found in specific microhabitats. The primary second intermediate host of this parasite is the grass shrimp Palaemonetes pugio. The behavior of trematode cercaria often reflects the habitat and behavior of the host species. The objective of my study was to examine the …
-
Activity Patterns, Home Range, and Microhabitat Selection of a Terrestrial Turtle (Rhinoclemmys rubida perixantha) in a Tropical Dry Forest
… the activity patterns, home range size, and microhabitat selection of the Mexican Spotted Wood Turtle (<em>Rhinoclemmys rubida perixantha</em>) in its SDTF habitat by tracking turtles with trail spools and radio telemetry. Our data show activity of <em>R. r. perixantha</em> was strongly …
-
Changes in the Distribution of "Acris crepitans blanchardi", with Studies of Nesting Microhabitat and the Possible Impact of Ultraviolet-B Radiation
Field surveys were completed to determine the current distribution of "Acris crepitans blanchardi" (cricket frog) in lowa, Minnesota, and South Dakota. These field surveys were unable to locate any populations of cricket frogs in Minnesota, South Dakota, or the northernmost tier of lowa counties. …
-
Head-start Juvenile and Adult Resident Eastern Box Turtles (Terrapene carolina carolina): Winter Ecology Including Microhabitat Selection, Temperature Tolerance and Philopatry
… We examined the temperature tolerance, microhabitat and degree of philopatry to hibernacula for juvenile and adult E. box turtles for two consecutive winters in Charles City Co, VA. The turtles were tracked via radio telemetry to record point locations during the active and inactive …
Page 1 of 10