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Titolo:
VARIATION IN THE UPLAND HEATHLANDS OF GREAT-BRITAIN - CONSERVATION IMPORTANCE
Autore:
USHER MB; THOMPSON DBA;
Indirizzi:
SCOTTISH NAT HERITAGE,2 ANDERSON PL EDINBURGH EH6 5NP SCOTLAND UNIV YORK,DEPT BIOL YORK YO1 5DD N YORKSHIRE ENGLAND SCOTTISH NAT HERITAGE,UPLANDS & PEATLANDS BRANCH,RES & ADVISORY SERV DIRECTORATE EDINBURGH EH6 5NP SCOTLAND
Titolo Testata:
Biological Conservation
fascicolo: 1, volume: 66, anno: 1993,
pagine: 69 - 81
SICI:
0006-3207(1993)66:1<69:VITUHO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
RED GROUSE; COMMUNITIES; SCOTLAND; ENGLAND;
Keywords:
CALLUNA; CONSERVATION IMPORTANCE; HEATHER; HEATHLAND MANAGEMENT; MOSAICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
56
Recensione:
Indirizzi per estratti:
Citazione:
M.B. Usher e D.B.A. Thompson, "VARIATION IN THE UPLAND HEATHLANDS OF GREAT-BRITAIN - CONSERVATION IMPORTANCE", Biological Conservation, 66(1), 1993, pp. 69-81

Abstract

The two main communities of British upland heaths are heather Callunavulgaris moor and heather-dominated blanket bog, which occur towards dry and wet ends, respectively, of a climatic gradient. The four developmental phases of heather-pioneer, building, mature and degenerate-also contribute to the variability, particularly for animal species. Spatial variation in the invertebrates often reflects these primary determinants of ecological variation, although soil or geological differences can be important. Temporal variation relates to the succession after heather burning or cutting. Examples of spatial and temporal variation are drawn from studies on the North York Moors, an upland area with15% of British ground beetles Carabidae, 20% of British spiders Araneae, but only 2.2% of the British vascular plants. There are many fewerspecies of vertebrates on upland heaths, but for the breeding birds (15% of British species), three questions are discussed in detail-what is desired, what management options are available and can heath-lands be managed for assemblages as well as for individual species? The review concludes that (i) burning on blanket bog be minimised; (ii) variable burning cycles to improve habitat complexity be used; (iii) wet flushes be conserved; (iv) upland heathland margins be burnt less intensively; and (v) scattered mosaics of scrub and woodland be established The mosaic structure of upland heathlands is critical for wildlife conservation. The invertebrate assemblages rely for their diversity on this mosaic structure. Several scales of mosaic on any one moor are likely to lead to the greatest diversity of vertebrate species.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 11:59:34