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The avifauna of the Río Machariapo dry forest, northern La Paz department, Bolivia: a preliminary investigation

Published online by Cambridge University Press:  11 May 2010

Mark Pearman
Mark Pearman
Affiliation:
58 Prospect Place, Wapping Wall, London E1 9TJ, U.K.
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Summary

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In March 1993, a survey of dry forest along the Río Machariapo, northern La Paz department, Bolivia, resulted in seven new bird species for the department, including some range extensions of several hundred kilometres: Coccyzus erythropthalmus, Otus guatemalae, Poecilurus scutatus, Formicivora melanogaster, Empidonax traillii alnorum, Nemosia pileata and Conirostrum speciosum. A probable new Herpsilochmus antwren was collected. These discoveries are of high conservation interest, especially as the La Paz - Cobija road is to be constructed through the Machariapo Valley, with work resuming in May 1993 and already very close to the head of the valley. Thus several new plant and bird taxa may be lost through deforestation even before they can be described.

Un estudio del bosque seco a lo largo del Río Machariapo en el norte del Departamento de La Paz, Bolivia, realizado en marzo de 1993, trajo como resultado el descubrimiento de siete nuevas especies de aves en este departamento, incluyendo algunas ampliaciones, de unos cien kilómetros, del área de distribución conocida: Coccyzus erythropthalmus, Otus guatemalae, Poecilurus scutatus, Formicivora melanogaster, Empidonax traillii alnorum, Nemosia pileata y Conirostrum speciosum. También se recolectó un Herpsilochmus sp. que es probablemente una nueva especie. Estos nuevas descubrimientos son de alto interés para la conservación, especialmente porque se está construyendo una carretera desde La Paz a Cobija por el Valle Machariapo. La construcción va a continuar en mayo de 1993 y actualmente esta se encuentra muy cerca del principio del valle. De esta manera nuevos taxa de plantas y aves podrian desaparecer a causa de deforestación, incluso antes de que se pudieran describir totalmente.

Type
Research Article
Information
Bird Conservation International , Volume 3 , Issue 2 , June 1993 , pp. 105 - 117
Copyright
Copyright © Birdlife International 1993

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