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- Article] The area-independent effects of habitat complexity on biodiversity vary between regions
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DocNo of ILP: 6053
Doc. Type: Article
Title: The area-independent effects of habitat complexity on biodiversity vary between regions
Authors: Johnson, MP; Frost, NJ; Mosley, MWJ; Roberts, MF; Hawkins, SJ
Full Name of Authors: Johnson, MP; Frost, NJ; Mosley, MWJ; Roberts, MF; Hawkins, SJ
Keywords by Author: fractal; heterogeneity; lottery; spacing; topography
Keywords Plus: SPECIES RICHNESS; POPULATION-DYNAMICS; SPATIAL SCALES; HETEROGENEITY; DIVERSITY; VARIABILITY; COMMUNITY; ENVIRONMENT; TOPOGRAPHY; STREAM
Abstract: Potential explanatory variables often co-vary in studies of species richness. Where topography varies within a survey it is difficult to separate area and habitat-diversity effects. Topographically complex surfaces may contain more species due to increased habitat diversity or as a result of increased area per se . Fractal geometry can be used to adjust species richness estimates to control for increases in area on complex surfaces. Application of fractal techniques to a survey of rocky shores demonstrated an unambiguous area-independent effect of topography on species richness in the Isle of Man. In contrast, variation in species richness in south-west England reflected surface availability alone. Multivariate tests and variation in limpet abundances also demonstrated regional variation in the area-independent effects of topography. Community composition did not vary with increasing surface complexity in south-west England. These results suggest large-scale gradients in the effects of heterogeneity on community processes or demography.
Cate of OECD: Biological sciences
Year of Publication: 2003
Business Area: other
Detail Business: medicine & science
Country: England
Study Area: regulation, control, habit
Name of Journal: ECOLOGY LETTERS
Language: English
Country of Authors: Queens Univ Belfast, Sch Biol & Biochem, Belfast BT9 7BL, Antrim, North Ireland; Univ Southampton, Biodivers & Ecol Div, Southampton SO16 7PX, Hants, England; Univ Liverpool, Port Erin Marine Lab, Port Erin IM9 6JA, Man, England; Marine Biol Assoc United Kingdom Lab, Plymouth PL1 2PB, Devon, England
Press Adress: Johnson, MP (reprint author), Queens Univ Belfast, Sch Biol & Biochem, 97 Lisburn Rd, Belfast BT9 7BL, Antrim, North Ireland.
Email Address:
Citaion: Johnson, Mark/0000-0002-5078-1410
Funding:
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Number of Citaion: 50
Publication: BLACKWELL PUBLISHING LTD
City of Publication: OXFORD
Address of Publication: 9600 GARSINGTON RD, OXFORD OX4 2DG, OXON, ENGLAND
ISSN: 1461-023X
29-Character Source Abbreviation: ECOL LETT
ISO Source Abbreviation: Ecol. Lett.
Volume: 6
Version: 2
Start of File: 126
End of File: 132
DOI: 10.1046/j.1461-0248.2003.00404.x
Number of Pages: 7
Web of Science Category: Ecology
Subject Category: Environmental Sciences & Ecology
Document Delivery Number: 635HX
Unique Article Identifier: WOS:000180394400009
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