Red List

MacKay, M. B. & Gardiner, S. E., 2017, Geographic analysis of Red List Rhododendron (Ericaceae) taxa by country of origin identifies priorities for ex situ conservation, Blumea 62 (2), pp. 103-120 : 105-108

publication ID

https://doi.org/10.3767/blumea.2017.62.02.05

persistent identifier

https://treatment.plazi.org/id/03B287EE-FFF0-C64B-FCB3-F8CB24B1FECE

treatment provided by

Felipe

scientific name

Red List
status

 

Red List taxa and endemic Red List taxa

The greatest number of Red List taxa originate in China (447 Red List taxa), followed by Indonesia (111), Myanmar (62), India (45) and Papua New Guinea (34) ( Table 2). The Red List categories Vulnerable or Data Deficient dominate in most countries; two exceptions are the Philippines and Japan which both have relatively high numbers of Critically Endangered taxa. While China is the origin of the greatest number of Critically Endangered taxa, this comprises only 3 % of Red List taxa overall for that country whereas the Critically Endangered taxa comprise 19 % of the Red List taxa for Japan and 32 %

Country of No. of taxa No. of taxa Percentage of No. of non- Countries (and no. Countries (and no. Countries (and no. Countries with origin that are taxa that endemic taxa of taxa) with which of taxa) with which of taxa) with which which one taxon is endemic are endemic 50 % or more of 25–49 % of non- less than 25 % of shared (not always non-endemic taxa endemic taxa are non-endemic taxa the same taxon) are shared shared ar shared

China 649 442 68 % 207 Myanmar 124 Bhutan 49 Cambodia

India 88 Nepal 30 Malaysia

Vietnam 28 ‘Europe’

Japan 8 Canada

Korea Nth 6 Greenland

Taiwan 6

Hong Kong 6

Thailand 5

Laos 5

Russia: east 5

Korea Sth 4

Mongolia 3

Indonesia 229 168 73 % 61

PNG 34

Malaysia 25 Brunei 9 Philippines 3 Thailand 2

Myanmar 137

India 107

Papua New 100 Guinea ( PNG)

Malaysia 83

Japan 74

Bhutan 57

Vietnam 40

Nepal 34

Philippines 33

United States 29 of America ( USA)

9

14

64

53

58

4

10

3

30

21 7 %

13 %

64 %

64 %

78 %

7 %

25 %

9 %

91 %

72 % 128

93

36

30

16

53

30

31

3

8

China 124 India 41 Bhutan 13 Bangladesh Vietnam 12 Malaysia Nepal 10 Cambodia Thailand 8

Laos 4

Japan 2

Hong Kong 2

Taiwan 2

China 88 Myanmar 41 Vietnam 7 Hong Kong Bhutan 49 Nepal 30 Thailand 5 Japan

Laos 2 Cambodia

Bangladesh 2 Malaysia

Taiwan

Indonesia 34 Solomons 2

Indonesia 25 Brunei 12 Thailand 4 India

Hong Kong Cambodia Laos Vietnam Burma Japan Taiwan

Russia: east 8 Korea Sth 7 Mongolia 3 Cambodia China 8 Korea Nth 6 Hong Kong 3 Vietnam Myanmar 2 India Taiwan 2 Malaysia Thailand 2 ‘Europe’ Laos 2 Canada Greenland USA

China 49 Nepal 29 Thailand 2 Bangladesh India 49 Myanmar 13 Vietnam 2

China 28 Myanmar 12 India 7 Hong Kong

Thailand 5 Cambodia

Laos 5 Malaysia

Bhutan 2 Taiwan

Japan

Sumatra

India 30 Myanmar 10 Bangladesh China 30

Bhutan 29

Indonesia 3

Malaysia 3

Canada 7 Greenland Japan Russia: east

Taiwan 23 16 70 % 7 China 6 Japan 4

Vietnam 2 India Hong Kong 2 Cambodia Laos 2 Myanmar Thailand 2 Malaysia Russia: east 15 3 20 % 12

Japan 8 Mongolia 5 USA 2 Canada Korea Nth 6 China 5 Greenland

Korea Sth 4 ‘Europe’ for the Philippines. Another exception to the general pattern is the reasonably high numbers of taxa in the Near Threatened category for China, Myanmar and India. Data Deficiency is most pronounced for taxa from China, Indonesia and Papua New Guinea.

The second entry for each origin in Table 2 shows the endemic taxa and their spread among the Red List categories. Taxa endemic to China exhibit a similar spread to Red List taxa overall; a pattern which is repeated for Indonesia, Malaysia, Papua New Guinea, Japan and the Philippines. Taxa from India demonstrate a different pattern; the 45 Red List taxa overall are dominated by Vulnerable and Near Threatened listings, while the 11 endemics are distributed almost evenly across the Critically Endangered, Endangered and Vulnerable categories. Although India does not have many endemic taxa they are in a relatively critical position; endemic taxa from Vietnam show a similar pattern. In contrast, the endemic Red List taxa from Myanmar and Bhutan are less threatened compared to Red List taxa overall from those countries.

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