Rarity and Threat

 

Threat assessment

 

A complete assessment of vascular plants was published by JNCC in 2005.  This is regularly reviewed.  A summary of the threat and rarity statuses that apply can be downloaded from the Species Designation pages.  A total of 2176 taxa were considered in the evaluation

 

 
   No. of taxa   % of taxa

Extinct (EX)

Extinct in the Wild (EW) 

Critically Endangered (CR)

Endangered (EN)

Vulnerable (VU) 

Data Deficient (DD)

Near Threatened (NT)

Least Concern (LC)

Nationally Rare (NR)

Nationally Scarce (NS)

Endemic to Britain and Ireland         
International Responsibility

 

19

7

45

101

307

63

102

1531

531

292

361

451

0.9

0.3

2.1

4.6

14.1

2.9

4.7

70.4

24.4

13.4

16.6

20.7

 
                 
In addition to the Red List, a ‘1waiting list’ of vascular plants requiring further work was also published.
 
An assessment of bryophytes will be published by JNCC in 2007.  A summary of the threat and rarity statuses that apply can be downloaded from the Species Designation pages.  A total of 497 taxa were considered in the evaluation:
 
 
   No. of taxa   % of taxa
Extinct (EX)
Critically Endangered (CR)
Endangered (EN)
Vulnerable (VU) 
Data Deficient (DD)
Near Threatened (NT)
Least Concern (LC)
Nationally Rare (NR)
Nationally Scarce (NS)
 
18
26
46
93
19
48
1
210
268

1.7

2.5

4.4

9.0

1.8

4.6

 

20.3

25.9

       
 
It is hoped to publish an assessment of charophytes in 2007.  A summary of the threat and rarity statuses that apply can be downloaded from the Species Designation pages.  A total of 30 taxa were considered in the evaluation:
 
   No. of taxa   % of taxa
Extinct (EX)
Critically Endangered (CR)
Endangered (EN)
Vulnerable (VU) 
Data Deficient (DD)
Near Threatened (NT)
Least Concern (LC)
 
2
0
7
4
1
3
13
5.7
0
23.3
13.3
3.3
10
43.3
 
 
 
1Vascular plant "Waiting List"
The most recent assessment of threat status for vascular plants included a group of taxa which were placed on a ‘Waiting List’.  These taxa require further work to be concluded before it will become possible to assess their conservation status.  There are three main reasons why taxa are placed here: 1) inadequate distributional data; 2) taxonomic uncertainties; 3) uncertainty over native, archaeophyte or neophyte status.  A full description of the Waiting List is included in the publication.
 
The List is included here in full, including the 2006 amendments.