Browsing by Subject "Ecology"
Now showing items 21-35 of 35
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(Texas A&M University. Libraries, 1985)Infestations of Anthonomus grandis Boheman (Coleoptera, Curculionidae) were found on staminate Hampea nutricia Fryxell (Malvaceae) trees throughout central Tabasco, Mexico. Pistillate fruiting forms were sometimes punctured ...
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(Texas A&M University. Libraries, 2003)Black bear habitat use based on available digestible energy was investigated in the Serranias del Burro, Coahuila, Mexico, during 1998-2001. Reproduction, survival and density of the bear population were also calculated ...
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(2009-05-15)Through field surveys and laboratory experiments, this study assessed in part the impacts of host plant, natural enemies, and weather variables on coffee leafminer Leucoptera coffeella distribution and abundance at two ...
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(Texas A&M University. Libraries, 1978)The first and second order cumulants of some multi-compartment stochastic models important to ecological problems are derived. The models investigated are the n-compartment irreversible, catenary model and the n-compartment ...
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(Texas A&M University, 2005-11-01)This study examined modifications made by Pogonomyrmex barbatus, by their processes of granivory and nest construction, to forb and grass dynamics under large-scale disturbances of fire, recent drought and long-term, ...
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(Texas A&M University. Libraries, 1991)Deforestation has reduced native birch woodlands and shrublands in Iceland from an estimated 25,000 to 40,000 km^2 at the time of settlement 1100 years ago to about 1,250 km^2presently. The objective of this research was ...
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(2017-07-11)Hydrologic changes have affected coastal ecosystem sustainability along the Texas coast and throughout the Gulf of Mexico. Human utilization of coastal ecosystems has led to the alteration of tidal hydrology. These ecosystems ...
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(2022-11-16)For management of a species to be effective, the underlying ecological relationships that promote survival and reproduction must be better understood. Specifically for reptile species, management can prove difficult due ...
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(Texas A&M University, 2006-04-12)There was a long-term decline in northern bobwhite (Colinus virginianus, NBW) abundance since the 1920s, based on the Christmas Bird Count (CBC) data, but with substantial spatial and temporal variations across its range. ...
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A Study on the Parasite Diversity and Community Ecology of Three Species of Texas Freshwater Turtles (2018-06-06)In this study, the metazoan parasites of three species of freshwater turtles (the spiny softshell, Apalone spinifera, the common snapping turtle, Chelydra serpentina, and the red-eared slider, Trachemys scripta elegans) ...
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(2019-04-22)Minerotrophic peatlands found in mountain regions of the world are relatively widespread ecosystems that could be used as paleoecological and paleoclimatic archives. However, they have received much less attention than ...
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(2020-05-04)Members of genus Capitella (Annelida: Capitellidae) are often found in high abundance in areas of anthropogenic disturbance, such as fish farms and waste-water outflow sites and are frequently cited as ecological indicators ...
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Tropic interrelationships of selected fishes on the continental shelf of the northern Gulf of Mexico (Texas A&M University. Libraries, 1977)The present study surveys the trophic interrelationships of 26 demersal fishes inhabiting the continental shelf of the northern Gulf of Mexico. Volumetric stomach content analyses were carried out on 4,550 specimens. Fishes ...
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(2009-05-15)Wilderness has been a central value in the development of the American environmental tradition and has been established in our laws and institutions, first in the National Park System and then more extensively through the ...