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Cryptic and cumulative impacts on the wintering habitat of the endangered black-faced spoonbill (Platalea minor) risk its long-term viability

Published online by Cambridge University Press:  27 June 2017

EVAN J. PICKETT
Affiliation:
School of Biological Sciences, The University of Hong Kong, Hong Kong, China
MELANIE CHAN
Affiliation:
School of Biological Sciences, The University of Hong Kong, Hong Kong, China
WENDA CHENG
Affiliation:
School of Biological Sciences, The University of Hong Kong, Hong Kong, China
JOHN ALLCOCK
Affiliation:
The Hong Kong Birdwatching Society, Lai Chi Kok, Kowloon, Hong Kong, China
SIMBA CHAN
Affiliation:
BirdLife International Asia Regional Office, Tokyo, Japan
JUNHUA HU
Affiliation:
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
KISUP LEE
Affiliation:
Waterbird Network Korea, Seoul 03147, Korea
BENA SMITH
Affiliation:
Wildfowl & Wetlands Trust, Slimbridge, Gloucestershire GL2 7BT, UK
SHUANG XING
Affiliation:
School of Biological Sciences, The University of Hong Kong, Hong Kong, China
YAT-TUNG YU
Affiliation:
The Hong Kong Birdwatching Society, Lai Chi Kok, Kowloon, Hong Kong, China
TIMOTHY C. BONEBRAKE*
Affiliation:
School of Biological Sciences, The University of Hong Kong, Hong Kong, China
*
*Correspondence: Dr Timothy C. Bonebrake email: [email protected]

Summary

The East Asian–Australasian flyway contains some of the most threatened habitats in the world, with at least 155 waterbird species reliant on the tidal habitats it comprises. The black-faced spoonbill (Platalea minor) is an iconic endangered species distributed across the coast of East Asia. Its population suffered a severe decline into the 1990s, but extensive monitoring and conservation interventions have aided a substantial recovery of the species. We used a population viability analysis based on data collected over the past two decades in conjunction with species distribution models to project spatially explicit models of population change for the next 35 years. Over nearly all scenarios of habitat loss and climate change, the global spoonbill population was projected to increase in the short-term due to low population numbers likely well below current population carrying capacities. However, climate change and habitat loss together threaten the recovery of the spoonbill population such that, by 2050, population declines are apparent as a consequence of these cumulative impacts. These threats are also cryptic and represent a challenge to the conservation of species recovering from anthropogenic impacts; observed population increases can hide large reductions in habitat suitability that threaten the long-term viability of species.

Type
Non-Thematic Papers
Copyright
Copyright © Foundation for Environmental Conservation 2017 

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Footnotes

Supplementary material can be found online at http://dx.doi.org/10.1017/S0376892917000340

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