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Biotic and abiotic factors influencing nonbreeding raptor assemblages in southern Texas
(2001)
I investigated factors influencing diversity ami abundance of wintering raptor assemblages in southern Texas. I approached this problem from several spatial and temporal scales, ranging from continental to patch, and 30 ...
Movements and spaciotemporal variation in relation to food productivity and distribution, and population dynamics of the Mexican black bear in the Serranias del Burro, Coahuila, Mexico
(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 ...
Nutritional ecology of northern pintails wintering in the Laguna Madre of Texas
(2001)
Molt intensity, digestive tract morphology, diet, and carcass composition of northern pintails were investigated along the southern Texas Coast during winters of 1997-98 and 1998-99. Precipitation was 133% and 83% of the ...
Ecological correlates of Harris' hawk grouping in southern Texas
(2002)
I surveyed Harris' hawk (Parabuteo unicinctus) grouping relative to rainfall and landscape patterns at eight southern Texas study sites during the fall non-breeding season. Objectives were to: I) determine relationships ...