Population decline of the Elfin-woods WarblerSetophaga angelaein eastern Puerto Rico

Content Provider	Scilit
Author	Arendt, Wayne J. Qian, Song S. Mineard, Kelli A.
Copyright Year	2012
Description	Summary: We estimated the population density of the globally threatened Elfin-woods WarblerSetophaga angelaewithin two forest types at different elevations in the Luquillo Experimental Forest in north-eastern Puerto Rico. Population densities ranged from 0.01 to 0.02 individuals/ha in elfin woodland and 0.06–0.26 individuals/ha inpalo coloradoforest in 2006, with average rates of decline since 1989 of 0.002–0.01 and 0.003–0.06 individuals/ha respectively. These estimates show a significant general declining trend from c.0.2 individuals/ha in 1989 in elfin woodland to c.0.02/ha in 2006, and from 1 to 0.2 inpalo coloradoforest. Although variation in estimated population density depended on the statistical method used, we document and discuss possible causes of an overall population decline from 1989 to 2006, lending support to previous initiatives to reclassify the species from the IUCN Red List category of “Vulnerable” to “Endangered”.
Related Links	https://www.cambridge.org/core/services/aop-cambridge-core/content/view/4349D7BF28BDED0AB29507D917EA17DB/S0959270913000166a.pdf/div-class-title-population-decline-of-the-elfin-woods-warbler-span-class-italic-setophaga-angelae-span-in-eastern-puerto-rico-div.pdf
Ending Page	146
Page Count	11
Starting Page	136
ISSN	09592709
e-ISSN	14740001
DOI	10.1017/s0959270913000166
Journal	Bird Conservation International
Issue Number	2
Volume Number	23
Language	English
Publisher	Cambridge University Press (CUP)
Publisher Date	2012-04-16
Access Restriction	Open
Subject Keyword	Bird Conservation International Population Decline
Content Type	Text
Resource Type	Article
Subject	Ecology Animal Science and Zoology Nature and Landscape Conservation