Reduced dependence of Crested Ibis on winter-flooded rice fields: implications for their conservation.

The Crested Ibis Nipponia nippon was once thought to be extinct in the wild until seven birds were discovered in a remote mountain village in China in 1981. Studies suggested that winter-flooded rice fields play an essential role in nest site selection by the Crested Ibis and hence in their survival...

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Autores principales:	Yiwen Sun, Andrew K Skidmore, Tiejun Wang, Hein A M J van Gils, Qi Wang, Baoping Qing, Changqing Ding
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7df8b03b85754c2dabd055354e56821c
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spelling	oai:doaj.org-article:7df8b03b85754c2dabd055354e56821c2021-11-18T08:17:53ZReduced dependence of Crested Ibis on winter-flooded rice fields: implications for their conservation.1932-620310.1371/journal.pone.0098690https://doaj.org/article/7df8b03b85754c2dabd055354e56821c2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24874870/?tool=EBIhttps://doaj.org/toc/1932-6203The Crested Ibis Nipponia nippon was once thought to be extinct in the wild until seven birds were discovered in a remote mountain village in China in 1981. Studies suggested that winter-flooded rice fields play an essential role in nest site selection by the Crested Ibis and hence in their survival. Considerable efforts were therefore made to conserve the winter-flooded rice fields, but these have caused conflicts between the agricultural and conservation communities. The population and geographical range of the wild Crested Ibis has expanded greatly since 1981, but there is no spatial information on the winter-flooded rice fields, nor on the current association of nest sites and winter-flooded rice fields. We mapped winter-flooded rice fields across the entire current range of Crested Ibis using innovative remote sensing and geographical information systems (GIS) techniques. The spatial relationships between the nest site clusters and winter-flooded rice fields were quantified using Ward's hierarchical clustering method and Ripley's K-function. We show that both have significantly clumped distribution patterns and that they are positively associated. However, the dependence of Crested Ibis on the winter-flooded rice fields varied significantly among the nest site clusters and has decreased over the years, indicating the absence of winter-flooded rice fields is not constraining their recovery and population expansion. We therefore recommend that efforts should be made to protect the existing winter-flooded rice fields and to restore the functionality of natural and semi-natural wetlands, to encourage both in-situ conservation and the re-introduction of the Crested Ibis. In addition, we recommend that caution should be exercised when interpreting the habitat requirements of species with a narrow distribution, particularly when that interpretation is based only on their current habitat.Yiwen SunAndrew K SkidmoreTiejun WangHein A M J van GilsQi WangBaoping QingChangqing DingPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 5, p e98690 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yiwen Sun Andrew K Skidmore Tiejun Wang Hein A M J van Gils Qi Wang Baoping Qing Changqing Ding Reduced dependence of Crested Ibis on winter-flooded rice fields: implications for their conservation.
description	The Crested Ibis Nipponia nippon was once thought to be extinct in the wild until seven birds were discovered in a remote mountain village in China in 1981. Studies suggested that winter-flooded rice fields play an essential role in nest site selection by the Crested Ibis and hence in their survival. Considerable efforts were therefore made to conserve the winter-flooded rice fields, but these have caused conflicts between the agricultural and conservation communities. The population and geographical range of the wild Crested Ibis has expanded greatly since 1981, but there is no spatial information on the winter-flooded rice fields, nor on the current association of nest sites and winter-flooded rice fields. We mapped winter-flooded rice fields across the entire current range of Crested Ibis using innovative remote sensing and geographical information systems (GIS) techniques. The spatial relationships between the nest site clusters and winter-flooded rice fields were quantified using Ward's hierarchical clustering method and Ripley's K-function. We show that both have significantly clumped distribution patterns and that they are positively associated. However, the dependence of Crested Ibis on the winter-flooded rice fields varied significantly among the nest site clusters and has decreased over the years, indicating the absence of winter-flooded rice fields is not constraining their recovery and population expansion. We therefore recommend that efforts should be made to protect the existing winter-flooded rice fields and to restore the functionality of natural and semi-natural wetlands, to encourage both in-situ conservation and the re-introduction of the Crested Ibis. In addition, we recommend that caution should be exercised when interpreting the habitat requirements of species with a narrow distribution, particularly when that interpretation is based only on their current habitat.
format	article
author	Yiwen Sun Andrew K Skidmore Tiejun Wang Hein A M J van Gils Qi Wang Baoping Qing Changqing Ding
author_facet	Yiwen Sun Andrew K Skidmore Tiejun Wang Hein A M J van Gils Qi Wang Baoping Qing Changqing Ding
author_sort	Yiwen Sun
title	Reduced dependence of Crested Ibis on winter-flooded rice fields: implications for their conservation.
title_short	Reduced dependence of Crested Ibis on winter-flooded rice fields: implications for their conservation.
title_full	Reduced dependence of Crested Ibis on winter-flooded rice fields: implications for their conservation.
title_fullStr	Reduced dependence of Crested Ibis on winter-flooded rice fields: implications for their conservation.
title_full_unstemmed	Reduced dependence of Crested Ibis on winter-flooded rice fields: implications for their conservation.
title_sort	reduced dependence of crested ibis on winter-flooded rice fields: implications for their conservation.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/7df8b03b85754c2dabd055354e56821c
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Reduced dependence of Crested Ibis on winter-flooded rice fields: implications for their conservation.

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