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Ecological, morphological and phylogenetic correlates of interspecific variation in plasma carotenoid concentration in birds
TLDR
The acquisition of carotenoids from the diet and their use for both health and display functions seem to be constrained by ecological and physiological aspects linked to the phylogeny and size of the species.
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Raptors as Indicators of Environmental Change in the Scrub Habitat of Baja California Sur, Mexico
“Indicator” species of natural habitat quality are potentially useful tools for managers of biodiversity (Rohlf 1991). Predators are often considered indicators because they are at the top of food…
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A Comparison of Spectrophotometry and Color Charts for Evaluating Total Plasma Carotenoids in Wild Birds
TLDR
Spectrophotometry should be the method of choice as it permits precise quantifications of total plasma carotenoids and objective comparisons among studies, and does not correlate with the spectrophotometric results in interspecific analyses.
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Localized extinction of an arboreal desert lizard caused by habitat fragmentation
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Land use changes affect distributional patterns of desert birds in the Baja California peninsula, Mexico
TLDR
The occurrence of a large percentage of bird species inhabiting scrub habitats is sensitive to human habitat transformation, which has important conservation implications at regional scale as fragmentation and conversion of desert ecosystems into agricultural and urban areas affect the distribution of species that are highly selective for scrub habitat.
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Results and evaluation of the first study of organochlorine contaminants (PCDDs, PCDFs, PCBs and DDTs), heavy metals and metalloids in birds from Baja California, México.
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Seasonal food habits of bobcats (Lynx rufus) in subtropical Baja California Sur, Mexico
TLDR
The annual and seasonal diet of the bobcat was determined from analysis of 188 feces in the Cape region of Baja California, Mexico, indicating that bobcats still rely upon lagomorphs for much of their food in southern latitudes and supports the hypothesis that lynx have evolved to prey on hares and rabbits.
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Incidence of organochlorine pesticides and the health condition of nestling ospreys (Pandion haliaetus) at Laguna San Ignacio, a pristine area of Baja California Sur, Mexico
TLDR
A significant relationship between hemoglobin and mean corpuscular hemoglobin concentrations and OC concentrations were found suggesting that a potential effect on the health of chicks may exist in this osprey population caused by the OC, e.g. anemia.
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Louse Flies on Birds of Baja California
TLDR
Only one louse fly species (Microlynchia pusilla) was found and it occurred in four of the 164 common ground doves collected, suggesting this is a new a host species for this louseFly.
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Belding's yellowthroat: current status, habitat preferences and threats in oases of Baja California, Mexico
The Belding's yellowthroat (Geothlypis beldingi) is an endemic species of Baja California Sur confined to the edge vegetation of freshwater at several oases. Information on its current status,…
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