European Red List of Vascular Plants - European Commission
European Red List of Vascular Plants - European Commission European Red List of Vascular Plants - European Commission
through Africa north and south of the Sahara and more or less throughout the Americas, the only places where it is absent are Australia, New Zealand and islands in the Pacific and Indian Oceans. Of the 27 EU countries only seven support fewer than 200 species and the main correlation appears to be that south of Fennoscandia, it is the size of the country that has the greatest influence over the number of aquatic species which a country supports. Of the 395 species assessed, 38 are found in only one country, of which 17 (45%) belong to genera known to have taxonomic problems; Isoetes, Trapa or Zannichellia many of which may, in time, be shown to simply be forms of other taxa; 24 occur in two countries; 307 (approximately three quarters) occur in five or more countries and 197 (approximately half) occur in 20 or more countries. 5.3.2 Endemic species richness Figure 22 shows the distribution of endemic aquatic plant species (e.g. those that are unique to Europe and are found nowhere else in the world). The distribution of endemic plants shows that there is a high rate of endemism in the north and west of the Iberian Peninsula, central and northern France, Belgium and the Netherlands with the UK, Germany and Denmark as well as Ukraine and Russia. Regarding the size of the areas covered by endemic species, the same caveat as in Figure 21 applies. 5.3.3 Distribution of threatened species Of the 26 threatened aquatic plant species, most are found in the Atlantic region, the Iberian Peninsula and other parts of the Mediterranean, with only a few occurring in northern countries. The importance of the Iberian Peninsula for threatened species can be seen in Figure 23. Two threatened species Eryngium viviparum and Thorella verticillato-inundata can be considered to fall within the Atlantic region. Six threatened species are endemic to the Iberian Peninsula: Apium bermejoi, Rorippa valdesbermejoi (Critically Endangered); Isoetes fluitans. Marsilea batardae (Endangered), Allium schmitzii and Pinguicula mundi (Vulnerable). Two threatened species are endemic to the Azores: Isoetes azorica and Marsilea azorica (both Vulnerable), although it has recently been suggested that the latter is in fact M. hirsuta, probably introduced from Australia. Fourteen threatened species can be considered predominantly Mediterranean in distribution, of which four are mainly eastern: Trapa annosa (Extinct, Serbia), Callitriche pulchra, Isoetes heldreichii (Critically Endangered, Greece) and Cyperus cyprius (Vulnerable, Cyprus); six Figure 22. Distribution of endemic aquatic plant species in Europe (excluding species assessed as Not Applicable and Data Deficient) 38
are mainly western: Isoetes malinverniana (Critically Endangered, Italy), Isoetes boryana (Endangered, France), Elatine brochonii (Vulnerable, France and Spain), Anagallis crassifolia and Marsilea strigosa (Vulnerable, France, Italy and the Iberian Peninsula) and three occurring more or less throughout: Pilularia minuta (Endangered), Damasonium polyspermum and Ipomoea sagittata (Vulnerable). Wetland with Schoenoplectus corymbosus, Parque Nacional Coto de Doňana, Spain. Photograph © Richard V. Lansdown. Only four threatened species have a predominantly northern distribution, Alisma wahlenbergii (Vulnerable in Europe, Endangered in the EU 27), Hippuris tetraphylla (Vulnerable in the EU 27) and Najas tenuissima (Vulnerable) are more or less restricted to Scandinavia and Russia, while Najas flexilis occurs from Ireland, east to Poland, and north through Scandinavia and Russia. Lythrum thesioides (Endangered) has a curious distribution, occurring in France, Italy, Hungary and Russia. It seems likely that the major gaps in its distribution must be due to under-recording or taxonomic confusion. The concentration of threatened aquatic plants in the Iberian Peninsula and the Mediterranean is more a consequence of the combination of the high diversity of threatened plants, particularly endemic species, and the distribution of the most vulnerable habitat types, mainly ephemeral pools. Figure 23. Distribution of threatened aquatic plants in Europe 39
- Page 1: European Red List of Vascular Plant
- Page 4 and 5: Published by the European Commissio
- Page 6 and 7: 6. Discussion .....................
- Page 8 and 9: Acknowledgements All of IUCN’s Re
- Page 10 and 11: Andrés Vicente Pérez Latorre Lore
- Page 12 and 13: are declining. But more interesting
- Page 14 and 15: a global “biodiversity hotspot”
- Page 16 and 17: The assessment provides three main
- Page 18 and 19: level, and species complexes have b
- Page 20 and 21: Convention includes 612 European pl
- Page 22 and 23: 3.2 Threat status of policy plants
- Page 24 and 25: Figure 5. Species richness of polic
- Page 26 and 27: Figure 7. Distribution of threatene
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- Page 30 and 31: Today, agricultural production is c
- Page 32 and 33: particularly important to Europe in
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- Page 36 and 37: Table 6. Threatened and extinct CWR
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- Page 40 and 41: Figure 14. Species richness of Euro
- Page 42 and 43: threatened species are endemic to t
- Page 44 and 45: with the predicted range in 2055. T
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- Page 68 and 69: References Anderson, S. 2002. Ident
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are mainly western: Isoetes malinverniana (Critically<br />
Endangered, Italy), Isoetes boryana (Endangered, France),<br />
Elatine brochonii (Vulnerable, France and Spain), Anagallis<br />
crassifolia and Marsilea strigosa (Vulnerable, France, Italy<br />
and the Iberian Peninsula) and three occurring more or less<br />
throughout: Pilularia minuta (Endangered), Damasonium<br />
polyspermum and Ipomoea sagittata (Vulnerable).<br />
Wetland with Schoenoplectus corymbosus, Parque Nacional Coto de Doňana, Spain.<br />
Photograph © Richard V. Lansdown.<br />
Only four threatened species have a predominantly<br />
northern distribution, Alisma wahlenbergii (Vulnerable in<br />
Europe, Endangered in the EU 27), Hippuris tetraphylla<br />
(Vulnerable in the EU 27) and Najas tenuissima<br />
(Vulnerable) are more or less restricted to Scandinavia<br />
and Russia, while Najas flexilis occurs from Ireland, east<br />
to Poland, and north through Scandinavia and Russia.<br />
Lythrum thesioides (Endangered) has a curious distribution,<br />
occurring in France, Italy, Hungary and Russia. It seems<br />
likely that the major gaps in its distribution must be due<br />
to under-recording or taxonomic confusion.<br />
The concentration <strong>of</strong> threatened aquatic plants in the<br />
Iberian Peninsula and the Mediterranean is more a<br />
consequence <strong>of</strong> the combination <strong>of</strong> the high diversity <strong>of</strong><br />
threatened plants, particularly endemic species, and the<br />
distribution <strong>of</strong> the most vulnerable habitat types, mainly<br />
ephemeral pools.<br />
Figure 23. Distribution <strong>of</strong> threatened aquatic plants in Europe<br />
39
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