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Showing 1 to 20 of 40 for “"habitat complexity"”.
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Evaluating the Role of Habitat Complexity in Structuring Seagrass Communities
Biogenic coastal habitats such as salt marshes, seagrasses, and oyster reefs, support diverse faunal communities and can serve as nursery areas by enhancing the abundance, growth, and survival of juvenile fish and crustaceans. The structure and complexity of these biogenic habitats can strongly …
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Effects of Extreme Flow Events on Community Composition and Habitat Complexity of Groundwater Dominated Systems
… are primary drivers in structuring aquatic habitats and communities. While floods and droughts can directly alter aquatic biota by displacement or by increased mortalities, extreme flow events can have an indirect and prolonged effect on biota by altering habitat complexity, which in turn …
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Influence of living and non-living habitat complexity on arthropods in strip-tilled cabbage fields
Vegetational (living) and structural (non-living) complexity can influence arthropods in agricultural systems. In this thesis, both forms of complexity were manipulated in cabbage fields. In 2010 and 2011, a field experiment was conducted examining the effects of herbicide intensity and oat kill …
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Influence of habitat complexity on diversity and community structure of arboreal spiders in grassland-shrub systems
… instance, vegetation structure provides spatial complexity by creating microenvironments that may enable more interactions with other species that live on plants or allow resource partitioning. In grasslands, much of the arboreal habitat is in the form of shrubs, but the role and importance of …
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Terrestrial Laser Scanning for Quantifying Uncertainty in Fluvial Applications
… calculations; and 2) measuring topography for habitat complexity quantification. The third objective was to apply knowledge uncertainties and stochastic variability to the application of SRD. A streambank on Stroubles Creek in Blacksburg, VA was surveyed six times over two years to measure SBR. …
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Feeding Selectivity and Habitat Usage of <i>Esox americanus</i>
<p>Patterns of piscine prey selection and habitat usage of <em>Esox americanus</em> were assessed through a series of field and experimental studies. Although few detailed studies exist on the foraging behavior and habitat usage of <em>E. americanus</em>, throughout its range it may be an important …
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Artificial reef creation using decommissioned pipeline protection structures - environmental performance in the North Sea.
… compared to bare pipelines and rock dump, with habitat complexity identified as a potential driver. The habitat complexity offered by mattresses, at different scales, and in different decommissioning scenarios was calculated from three-dimensional models of the structures. Mattresses broken up …
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Differences in Fish Abundance Among Habitat Types in a Warmwater Stream; The James River, South Dakota
… conducted to gather information regarding fish habitat in the James River, SD. Fish abundances were quantified and compared among habitats created by large, instream features. Four physically complex habitat features were studied: hardbottom (areas of gravel or rubble substrate), snags (woody …
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Foraging ecology of two piscivores in woody habitat and effects of their introduction on lake ecosystems
… as well as the alteration of littoral habitats, in Illinois lakes affects the consequences of predation for other ecologically and recreationally important species in these ecosystems. Some studies in lentic ecosystems have found large effects of introducing piscivores to systems that …
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Fish Community Assembly At Multiple Spatial Scales In East Texas Streams
… as historical trends in occurrence and local habitat associated with a species of greatest conservation need within east Texas. The results of this study indicate that stream sites with more habitat complexity and stability support a more taxonomically and functionally diverse fish assemblage, …
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Flamingo foraging activity as a driver of spatial heterogeneity in Langebaan Lagoon, South Africa
… temporal) variation in structures generate habitat complexity. Thus, this preliminary study supports the notion that flamingo foraging activity is a key driver of spatial heterogeneity in Langebaan Lagoon and highlights the need for further research.
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The Relationship of Herpetofaunal Community Composition to an Elephant (Loxodonta Africana) Modified Savanna Woodland of Northern Tanzania, and Bioassays with African Elephants
… influence on herpetofaunal species by creating habitat complexity by modifying the woodland area. In addition to this study, bioassays were conducted on three chemical compounds (cyclohexanone, 2<decanone and 2<nonanone) that could possibly be elephant pheromones. The compounds were tested from …
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Biotic and abiotic factors influencing the invasion success and ecological impacts of the Pacific oyster, Crassostrea gigas
… ecosystems causing changes in biodiversity, habitat complexity and species interactions. After being introduced for aquaculture purposes worldwide, the Pacific oyster, Crassostrea gigas, has become one of the most globalised marine invertebrates. Ecological impacts associated with C. gigas …
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Biological control of Culex mosquitoes using multiple predators
… irrespective of abiotic contexts (temperature, habitat complexity, water clarity), and thus propose their efficacy in supressing mosquito populations is robust to different aquatic environments where mosquitoes breed. <br/><br/>Copepod-mosquito interaction strengths increased concurrently with …
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Fish-Habitat Associations in Small Backwaters of the Upper Missouri River, North Dakota
I evaluated habitat characteristics and fish assemblages associated with small backwaters of the Upper Missouri River, North Dakota. Backwaters sampled ranged in size from 0.002 to 0.44 ha with a mean area of 0.08 ha and were located relatively close to the main channel of the Missouri River (mean …
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Scavenger-Predator-Prey Model with Finite Resources
… a control parameter in Turing bifurcations. The complexity of pattern formations is further analyzed in the context of cross-diffusion in the second paper, ”Complex Pattern Formations Induced by Cross-Diffusion, 2023.” Here, the interplay of cross-diffusion and habitat complexity is examined, …
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Seasonal habitat use and survival of brown trout (Salmo trutta) in Oatka Creek, Monroe County, New York
… New York. Management agencies are considering habitat manipulation to reduce the severity of overwinter merganser predation on the wild brown trout population in Oatka Creek Park (OCP; Monroe County) but currently lack data to make an informed decision. My study sought to 1) quantify the …
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Assessment Of The Macroinvertebrate Assemblages From The Mesohabitats Of A Headwater Stream-Wetland Hydrologic Restoration In Eastern Kentucky
… has become a common practice in order to improve habitat degradation resulting from land use practices such as channelization. Despite the large amount of effort and funding stream restoration projects represent, only a small portion have undergone post-restoration assessments of the ecological …
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Movement of fishes in a network of streams and implications for persistence
… related to distance from the mainstem creek and habitat complexity. Movement rates, measured as the number of fish moving upstream through a trap per day, were positively related to increases in flow, daylength, and water temperature. Distance moved was greater for fish that were initially marked …
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