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Attributes of British and Irish Plants - Natural Environment Research ...

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CON TEN TS<br />

Int roduction<br />

Species, fam ilies, stat us <strong>and</strong> change 3<br />

Species <strong>and</strong> families . 3<br />

Native/afi en status . 3<br />

Conservation status . . . 3<br />

Rarity status . 3<br />

Change Index . 4<br />

Size <strong>and</strong> life history at tributes . . .<br />

Height <strong>and</strong> length .<br />

Perennation . 5<br />

Life form . . . . . 5<br />

Woodiness<br />

Clonality<br />

Geographic attributes<br />

European <strong>and</strong> wider distributions, <strong>and</strong> continentality . . 9<br />

Native distribution <strong>of</strong> species alien in Britain <strong>and</strong> Irel<strong>and</strong> . . . 10<br />

Counts <strong>of</strong> 10-km squares in the New Atlas . 10<br />

Climatic means 11<br />

H abitat att ributes . . . . . 12<br />

Coastal species . 12<br />

Broad Habitats . 12<br />

Ellenberg's indicator values . 14<br />

Light values (L) . 14<br />

Moisture values (F) . 15<br />

Reaction (R) . 16<br />

Nitrogen (N) . . . 16<br />

Sak tolerance (S) . . 17<br />

Listing <strong>of</strong> species with their attributes 18<br />

A ppendix 6 1<br />

Sources for plant height . . 6 1<br />

Defi nition <strong>of</strong> life forms . 6 1<br />

Examples <strong>of</strong> how fi fe-form criteria are applied . . 62<br />

Links between life forms <strong>and</strong> plant height . 63<br />

Clonality . 64<br />

Broad Habitats . 64<br />

Initial calculation <strong>of</strong> species' preferences for Broad Habitats . 68<br />

Extension <strong>and</strong> validation <strong>of</strong> species' preferences . 69<br />

Acknowledgem ent s 70<br />

Bibliography 7 1

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