NDLI: Spatiotemporal dynamics of ecological variation of waterbird habitats in Dongtan area of Chongming Island

Content Provider	Springer Nature Link
Author	Fan, Xuezhong Zhang, Liquan
Copyright Year	2012
Abstract	Based on Landsat TM images, we explored the pattern of variation of suitable waterbird habitats from 1990 to 2008 in the Dongtan area of Chongming Island at the Changjiang (Yangtze) River mouth. By applying our highly accurate indicator model (R=0.999, P<0.01), we quantified the variations of fluctuation intensity for local waterbird habitats during 1990–2008, and for the main waterbird groups (Anatidae, Charadriidae, Ardeidae and Laridae) from 2006 to 2008, to evaluate the impact of habitat quantity change on the waterbird habitat status and the population dynamics of the different waterbird groups. The results show that the aquaculture ponds (AP) and the Scirpus mariqueter zone (SMZ) underwent drastic habitat changes during certain periods (AP: 1997–2000, 2000–2003, 2005–2008; SMZ: 1997–2000), and the fluctuation intensity differed among habitat types in the order AP>SMZ>TSH (total suitable habitat)>BSA (bare mud flat and shallow water area). The abandonment of tracts of aquaculture ponds in Dongtan in mid-2006 brought about an intensive population fluctuation, caused by rapidly changing habitat with the population expanding to adjacent areas. At present, Anatidae and Ardeidae are threatened in the Dongtan area with declining populations because of their very “picky” habitat requirements (i.e., high reliance on AP). The Charadriidae experienced enormous population declines in the late 1990s, however, they have since recovered to normal levels as habitat change has stabilized. Our findings suggest that the current challenges for habitat management are the protection and stabilization of AP and SMZ habitats.
Starting Page	485
Ending Page	496
Page Count	12
File Format	PDF
ISSN	02544059
Journal	Chinese Journal of Oceanology and Limnology
Volume Number	30
Issue Number	3
e-ISSN	19935005
Language	English
Publisher	SP Science Press
Publisher Date	2011-11-17
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	waterbird biodiversity habitat management population dynamics nature reserve Chongming Island Changjiang (Yangtze) River estuary Oceanography
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Oceanography

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