Document of bibliographic reference 108327

BibliographicReference record

Type
Bibliographic resource
Type of document
Journal article
BibLvlCode
AS
Title
Scales of spatial variation in Mediterranean subtidal sessile assemblages at different depths
Abstract
Analyses of spatial patterns of distribution of populations and assemblages along environmental gradients are common in marine ecology. How these patterns vary at different spatial scales has seldom been examined, despite the fact that patterns in nature are intrinsically scale-dependent. This study quantified variability in subtidal assemblages at a hierarchy of spatial scales along a depth gradient, using several univariate and multivariate techniques. Despite variation in the sizes of depth effects in time and space, there were large, significant and generally characterisable differences in the structure of assemblages at different depths. The sizes of multivariate and univariate components of variation at different spatial scales were compared at each of 3 different depths (5, 15 and 25 m), using a bias-corrected bootstrapping approach. The sizes of variance components at different spatial scales varied with depth and choice of transformation. In all cases, the largest component of variation was at the smallest scale (tens of centimeters). A pattern of decreasing residual variance with depth was seen for untransformed data, while a pattern of increasing residual variance with depth was seen for presence/absence data. In contrast, variation among locations (separated by >1 km) and among sites (separated by hundreds of metres) was largest at intermediate depths (~15 m), regardless of the transformation used. The multivariate procedures used here offer several advantages over previously used techniques, providing suitable quantitative methods for analysing, at multiple scales, the patchy and complex nature of rocky subtidal assemblages.
WebOfScience code
https://www.webofscience.com/wos/woscc/full-record/WOS:000245542400003
Bibliographic citation
Terlizzi, A.; Anderson, M.J.; Fraschetti, S.; Benedetti-Cecchi, L. (2007). Scales of spatial variation in Mediterranean subtidal sessile assemblages at different depths. Mar. Ecol. Prog. Ser. 332: 25-39
Topic
Marine
Is peer reviewed
true
Access rights
open access
Is accessible for free
true

Authors

author
Name
Antonio Terlizzi
Identifier
https://orcid.org/0000-0001-5968-4548
author
author
Name
Simonetta Fraschetti
Identifier
https://orcid.org/0000-0002-1780-1651
author
Name
Lisandro Benedetti-Cecchi

thesaurus terms

term
Depth (term code: 2241 - defined in term set: ASFA Thesaurus List)
Gradients (term code: 9706 - defined in term set: ASFA Thesaurus List)
Sessile species (term code: 7499 - defined in term set: ASFA Thesaurus List)

Other terms

other terms associated with this publication
Bootstrapping
Subtidal

Document metadata

date created
2007-03-07
date modified
2007-03-07