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Neotropical migrant landbirds and landscape changes in Los Tuxtlas, Veracruz, Mexico

Title and abstract are also in Spanish. OCLC 34281491
By:
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Edited by:
Marcia H. Wilson and Steven A. Sader

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Abstract

Faced with the problem of habitat loss and with the need to preserve the remaining components of the original avian biodiversity in neotropical regions such as Los Tuxtlas, it is imperative to determine how the neotropical migrant bird species have responded to the anthropogenic alterations of their natural habitats. To provide data in this direction, we censused neotropical migrant birds in undisturbed and in disturbed forest fragments and in regeneratlng forests (young second growths and old second growths). In addition, we conducted censuses in the following man-made habitats: arboreal agricultural habitats (cacao, coffee, mixed, citrus, and allspice), non-arboreal agricultural habitats (corn and jalapeno chili pepper), live fences, and pastures. We censused 4186 neotropical migrant birds representing 71 species. Seven species (Magnolia Warbler, Hooded Warbler, Wilson's Warbler, American Redstart, White-eyed Vireo, Yellow-rumped Warbler, Black-and-white Warbler) accounted for 50% of total records. Isolating distance was an important variable influencing species richness at the non-pasture habitats studied. Disturbed forest fragments had significantly fewer species and individuals than undisturbed forest fragments and than regenerating forests. Pastures were the poorest habitat in neotropical migrant birds. Agricultural habitats, however, were particularly rich in individuals and species (3479 individuals of 59 species). Arboreal agricultural habitats and live fences were richer in species and in birds than non-arboreal man-made habitats and were also the habitats most similar to the undisturbed forest fragments in species assemblage. We discuss the conservation value for neotropical migrant birds of agricultural habitats and of live fences as landscape elements that help reduce physical and biotic isolation among the remaining configurations of forest fragments and compensate, in part, for the loss of vegetation area and habitat heterogeneity that has resulted from anthropogenic activity in Los Tuxtlas.

Additional Publication Details

Publication type:
Book chapter
Publication Subtype:
Book Chapter
Title:
Neotropical migrant landbirds and landscape changes in Los Tuxtlas, Veracruz, Mexico
Series number:
727
Year Published:
1995
Language:
English
Publisher:
Maine Agricultural and Forest Experiment Station.
Contributing office(s):
Patuxent Wildlife Research Center
Description:
viii, 288
Larger Work Type:
Book
Larger Work Subtype:
Other Government Series
Larger Work Title:
Conservation of Neotropical Migratory Birds in Mexico: Symposium-Workshop.
First page:
253
Last page:
254(abs)