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Showing 1 to 20 of 59 for “"resource partitioning"”.
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Sexual dimorphism, resource partitioning and intraspecific aggression in Caprella californica Stimpson
<p>The Caprellidae are a specialized suborder of Amphipoda, which are highly modified for a semisessile life. Caprellids exhibit direct development and brood their young. The suborder is exclusively marine and commonly found on filamentous algae, sea grasses and fouling communities. Most published …
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Resource Partitioning in Seven Species of Sympatric Intertidal Chitons (Mollusca: Polyplacophora)
… red algae, and Lithotharnnion suggest food resource partitioning. Certain species appeared to "select" diatoms, Ulva, and invertebrates from eight food types available in the microhabitat. Movement rates, activity, and behavior differed significantly in one tank experiment and may further …
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Resource partitioning of soil organic phosphorus: investigations from a tropical mountain forest
One of the major limitations of resource-niche theory to explain plant species diversity and distribution is the paucity of recognized resources. Recent investigations in grassland and tundra ecosystems indicate that plant species can specialize to exploit different forms of soil nitrogen. I …
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Resource partitioning in buds and insect induced galls in the biocontrol of Acacia pycnantha
… bud material remains at the same weight. The resource loss to the plant caused by the galls is dependent on the size and number of galls present on the tree. Even with similar energy values per unit dry mass there were many more grams of gall material on a tree than bud material and thus they …
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Vertical Resource Partitioning and Sexuality of Three Sympatric Species of Red Sea Sandfishes (Xyrichtys melanopus, Labridae; Trichonotus nikii, Trichonotidae; Gorgasia sp., Congridae)
Three species of marine sandfishes were studied from 1984 to 1986. Their inter- and intraspecific behavior was monitored during the daylight hours to examine interactions that could result in the vertical stratification of the species over the sandy bottom within the fringing and patch reefs in the …
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Patterns of Resource Utilization by Spring Bees Visiting Salix With Emphasis on Use of Pollen by Bees in the Genus Andrena (Hymenoptera: Apoidea) (Competition, Resource Partitioning)
Made available in DSpace on 2014-12-16T05:57:04Z (GMT). No. of bitstreams: 1 8511645.pdf: 6457485 bytes, checksum: 19a929f537af2cef7833289a3aa4bd26 (MD5) Previous issue date: 1985
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Variation in Egg Components: A Study of Maternal Investment and Resource Partitioning in the Nesting Loggerhead Sea Turtle; Estimating Genic Variation and Mapping Genetic Lineage of a Rare Captive Helodermatid Population: <em>Heloderma Horridum Charlesbogerti</em>
<p>Loggerhead sea turtles have the highest egg yields of any oviparous non-avian reptiles. Blood urea nitrogen levels increased as the season progressed while total blood albumen and total protein levels decreased. Wet egg mass (H = 1.7719 df = 2 p = 0.0375*) and albumen mass (H = 6.0507 df = 2 p = …
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Using Mesocosms to Model Optimal Levels of Body Size Variation in Larval Spotted Salamanders (Ambystoma maculatum)
… fitness. Populations may be structured through resource partitioning or competitive hierarchies, yet these structures predict contradictory size variation optima. This study sought to determine optimal levels of intraspecific body size variation in populations of larval salamanders to evaluate …
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A Flattened Hierarchical Scheduler for Real-Time Virtual Machines
… this problem rely on either spatial or temporal resource partitioning, both of which under-utilize the processing capacity of the host system. Paravirtualized solutions in which the guest communicates its real-time needs have been proposed, but they cannot support legacy operating systems. This …
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Comparative dietary analysis of four small pelagic fish species from presumed mixed shoals off South Africa's east coast
… in terms of dietary carbon, 2) assess whether resource partitioning by prey type and/or prey size occurs amont the four species, 3) compare results with what is known about the diet of these species on the west and south coasts of South Africa and 4) characterize diet of east coast redeye.
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Foraging habitat niche comparisons and foraging behavior of seven species of flycatchers in southwest Virginia
… were measured to examine interspecific habitat resource partitioning, niche breadth and niche overlap. Four of the species inhabited forested areas; Great Crested Flycatcher, Eastern Wood Pewee, Least Flycatcher and Acadian Flycatcher. Two species, the Eastern Kingbird and Willow Flycatcher, …
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The ecological life history and feeding biology of Batillaria zonalis (Bruguière)
… with diatoms are reported with reference to food-resource partitioning. The results are discussed within the context of problems of testing hypotheses about diversity and stability in salt marsh communities. Although these basic theoretical questions cannot be answered in this study, the …
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Structure of an Ensemble of Insectivorous Bats
… show distinct characteristics that may permit resource partitioning but few studies focus on more than one or two traits. Using seven sympatric Jamaican bats, I examined features which could allow for spatial, temporal, behavioural and dietary partitioning including wing morphology, …
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Comparative resource use by two species of black bass in riverine and impounded sections of the New River, Virginia
… impounded sections of the New River, Virginia. Resource use (habitat and diet) by the two species was investigated to determine patterns and extent of resource partitioning between them and how those patterns might differ between lotic and lentic environments. Individual fitness indicators …
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Characterizing the trophic niche of non-native psedorasbora parva and the consequences for native fish communities.
… along with assessment of the mechanisms of resource partitioning or sharing between the co-existing species. The model non-native fish was topmouth gudgeon Pseudorasbora parva, a highly invasive fish in Europe that originates from Southeast Asia. The study was completed over three spatial …
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TROPHIC ECOLOGY OF JUVENILE LEAN AND SISCOWET LAKE TROUT (SALVELINUS NAMAYCHUSH) FROM U.S. WATERS OF LAKE SUPERIOR
… in deeper habitats at 400mm or age-5 facilitates resource partitioning between larger and older Lake Trout ecotypes.</p>
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Food Partitioning Between Two Sympatric Cricetid Species
… sympatric species avoid competition by partitioning resources. The extent of niche overlap and resource partitioning can be determined by studying food habits of sympatric species. Microtus ochrogaster and Peromyscus maniculatus occur sympatrically at the Southwest Missouri State …
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Development of in vivo ppGpp reporters in escherichia coli
… very useful when studying the dynamics of host resource partitioning.
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Competition for anchovy (Engraulis capensis) and sardine (Sardinops sagax) between the Cape Gannet (Morus capensis), Cape fur seal (Arctocephalus pusillus pusillus) and the purse-seine fishery on the west coast of South Africa
Competition for pelagic fish resources was investigated by assessing the overlap in the food base of three land-based predators: Cape gannet (Morus capensis), Cape fur seal (Arctocephalus pusillus pusillus) and humans operating via a purse-seine fishery. Multivariate analysis the diet composition of …
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