PREDICTING POPULATION TRENDS OF THE BLACK-FACED SPOONBILL (PLATALEA MINOR)

Kun Shan University Institutional Repository > 教學單位 > 工程學院 > 環境工程系所 > 期刊論文 > Item 987654321/3373

Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/3373

Title:	PREDICTING POPULATION TRENDS OF THE BLACK-FACED SPOONBILL (PLATALEA MINOR)
Authors:	翁義聰
Date:	2007
Issue Date:	2009-08-14 23:16:06 (UTC+8)
Abstract:	The global population of the Black-faced Spoonbill (Platalea minor) has increased steadily.We estimated global population growth rates of the Black-faced Spoonbill based on annual counts of wintering populations in East Asia between 1991/1992 and 2003/2004. The mean (+-SD) annual growth rate was 1.13+-0.08. The estimated survival rate was 86.6+-9.3% based on the annual return rates of color-banded birds in Taiwan between 1998 and 2005. We predicted global Black-faced Spoonbill populations in 2003/2004–2013/2014 using a stochastic exponential model and showed the mean global population in 2013/2014 would exceed 4,000+-950. The probability of a global population decline to less than the 2003/2004 level is low (P= 0.06).If the 1991–2004 growth rate is sustained, the probability for the global population to increase to twice that of the 2003/2004 level is 0.98 and the predicted mean wintering population in Taiwan could exceed 2,000 in 2013/2014. Establishment of new protective areas and increasing food availability at existing reserves and adjacent fish ponds in southwestern Taiwan will be necessary to ensure continued growth. 校園內公開
Relation:	The Wilson Journal of Ornithology 119(2), pp.246–252
Appears in Collections:	[環境工程系所] 期刊論文

Files in This Item:

File	Description	Size	Format
predicting population trends of the black-faced spoonbill.pdf		102Kb	Adobe PDF	76	View/Open