A tree species with an extremely small population: Recategorizing the Critically Endangered Acer yangbiense

Lidan Tao; Chunyan Han; Weibang Sun; Kun Song

doi:10.1017/S0030605319000073

A tree species with an extremely small population: Recategorizing the Critically Endangered Acer yangbiense

Lidan Tao
, Chunyan Han
, Weibang Sun^*
, Kun Song

^*Corresponding author for this work

School of Ecology and Environmental Sciences

CAS - Kunming Institute of Botany

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Acer yangbiense Y.S. Chen & Q.E. Yang (Aceraceae) is a threatened tree species endemic to China, formerly presumed to have declined to only five extant individuals, restricted to Yangbi County, Yunnan Province. Our surveys in 2016, however, located 577 individuals in 12 localities, but only three localities (with a total of 62 individuals) are protected. Nine localities are on private forest land. The population's size structure is an inverse J-curve, but there is a scarcity of trees of the smallest size class and of seedlings. Our surveys also showed that the habitat of A. yangbiense is degraded as a result of the negative effects of agriculture, logging and wood harvesting. Assessment with the IUCN Red List categories and criteria indicates that A. yangbiense should be recategorized from Critically Endangered to Endangered.

Original language	English
Pages (from-to)	474-477
Number of pages	4
Journal	Oryx
Volume	54
Issue number	4
DOIs	https://doi.org/10.1017/S0030605319000073
State	Published - 1 Jul 2020

Keywords

Acer yangbiense
China
Degraded
Endangered
Threatened
Tree
Yunnan
size structure

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1017/S0030605319000073

Cite this

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title = "A tree species with an extremely small population: Recategorizing the Critically Endangered Acer yangbiense",

abstract = "Acer yangbiense Y.S. Chen \& Q.E. Yang (Aceraceae) is a threatened tree species endemic to China, formerly presumed to have declined to only five extant individuals, restricted to Yangbi County, Yunnan Province. Our surveys in 2016, however, located 577 individuals in 12 localities, but only three localities (with a total of 62 individuals) are protected. Nine localities are on private forest land. The population's size structure is an inverse J-curve, but there is a scarcity of trees of the smallest size class and of seedlings. Our surveys also showed that the habitat of A. yangbiense is degraded as a result of the negative effects of agriculture, logging and wood harvesting. Assessment with the IUCN Red List categories and criteria indicates that A. yangbiense should be recategorized from Critically Endangered to Endangered.",

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author = "Lidan Tao and Chunyan Han and Weibang Sun and Kun Song",

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doi = "10.1017/S0030605319000073",

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T2 - Recategorizing the Critically Endangered Acer yangbiense

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AU - Han, Chunyan

AU - Sun, Weibang

AU - Song, Kun

PY - 2020/7/1

Y1 - 2020/7/1

N2 - Acer yangbiense Y.S. Chen & Q.E. Yang (Aceraceae) is a threatened tree species endemic to China, formerly presumed to have declined to only five extant individuals, restricted to Yangbi County, Yunnan Province. Our surveys in 2016, however, located 577 individuals in 12 localities, but only three localities (with a total of 62 individuals) are protected. Nine localities are on private forest land. The population's size structure is an inverse J-curve, but there is a scarcity of trees of the smallest size class and of seedlings. Our surveys also showed that the habitat of A. yangbiense is degraded as a result of the negative effects of agriculture, logging and wood harvesting. Assessment with the IUCN Red List categories and criteria indicates that A. yangbiense should be recategorized from Critically Endangered to Endangered.

AB - Acer yangbiense Y.S. Chen & Q.E. Yang (Aceraceae) is a threatened tree species endemic to China, formerly presumed to have declined to only five extant individuals, restricted to Yangbi County, Yunnan Province. Our surveys in 2016, however, located 577 individuals in 12 localities, but only three localities (with a total of 62 individuals) are protected. Nine localities are on private forest land. The population's size structure is an inverse J-curve, but there is a scarcity of trees of the smallest size class and of seedlings. Our surveys also showed that the habitat of A. yangbiense is degraded as a result of the negative effects of agriculture, logging and wood harvesting. Assessment with the IUCN Red List categories and criteria indicates that A. yangbiense should be recategorized from Critically Endangered to Endangered.

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KW - Endangered

KW - Threatened

KW - Tree

KW - Yunnan

KW - size structure

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A tree species with an extremely small population: Recategorizing the Critically Endangered Acer yangbiense

Abstract

Keywords

UN SDGs

Access to Document

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