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Assessment of space utilisation in a subtidal temperate bryozoan community

Identifieur interne : 00BD69 ( Main/Exploration ); précédent : 00BD68; suivant : 00BD70

Assessment of space utilisation in a subtidal temperate bryozoan community

Auteurs : M. A. Ward [Royaume-Uni] ; J. P. Thorpe [Royaume-Uni]

Source :

Marine Biology [ 0025-3162 ] ; 1989-06-01.

RBID : ISTEX:E48CEF02454C952F9FACC79839C71CA4674F5C45

Descripteurs français

Wicri :
- topic : écologie.

English descriptors

Abstract

Abstract: On subtidal hard substrata, Bryozoa are often very abundant, both in terms of numbers of colonies and numbers of species. To investigate how so many species are able to co-exist, often in close proximity to each other, subtidal material was dredged from an area of bryozoan-rich coarse “shelly” sea-bed off the south-west of the Isle of Man (British Isles) in autumn 1984 and 1985. A survey was performed on the distribution of colonies of eight common, encrusting cheilostome bryozoan species across the surfaces of four types of empty, disarticulated bivalve shells. Each species was found to be significantly commoner on certain substratum types such as rough surfaces or inner concave surfaces. Fenestrulina malusii (Audouin) showed a further, more specific, tendency to be signficantly more abundant on the grooves of the corrugated inner surfaces of left valves of Pecten maximus (L.). In general however there was much overlap in distribution and it is proposed that such large numbers of species are able to co-exist because of the evolution of different life-history strategies ensuring that each species uses the available temporally and spatially heterogenous substrata in subtly different ways; some species, for example, occupying substrata that are optimal to bryozoan growth and other species, by reaching maturity earlier, being able to inhabit more ephemeral suboptimal substrata.

Url:

https://api.istex.fr/document/E48CEF02454C952F9FACC79839C71CA4674F5C45/fulltext/pdf

DOI: 10.1007/BF00543350

Affiliations:

Royaume-Uni

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Le document en format XML

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<term>Disarticulated bivalve shells</term>
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<term>Outer surfaces</term>
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<term>Significant difference</term>
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<term>Smooth surfaces</term>
<term>Space utilization</term>
<term>Substrata</term>
<term>Substratum</term>
<term>Subtidal</term>
<term>Such surfaces</term>
<term>Surface texture</term>
<term>Trispinosa</term>
<term>Unpublished thesis</term>
<term>Valve</term>
<term>Ventricosa</term>
<term>Wide range</term>
<term>Zooid</term>
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<term>Pecten</term>
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<term>Personal observation</term>
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<front><div type="abstract" xml:lang="en">Abstract: On subtidal hard substrata, Bryozoa are often very abundant, both in terms of numbers of colonies and numbers of species. To investigate how so many species are able to co-exist, often in close proximity to each other, subtidal material was dredged from an area of bryozoan-rich coarse “shelly” sea-bed off the south-west of the Isle of Man (British Isles) in autumn 1984 and 1985. A survey was performed on the distribution of colonies of eight common, encrusting cheilostome bryozoan species across the surfaces of four types of empty, disarticulated bivalve shells. Each species was found to be significantly commoner on certain substratum types such as rough surfaces or inner concave surfaces. Fenestrulina malusii (Audouin) showed a further, more specific, tendency to be signficantly more abundant on the grooves of the corrugated inner surfaces of left valves of Pecten maximus (L.). In general however there was much overlap in distribution and it is proposed that such large numbers of species are able to co-exist because of the evolution of different life-history strategies ensuring that each species uses the available temporally and spatially heterogenous substrata in subtly different ways; some species, for example, occupying substrata that are optimal to bryozoan growth and other species, by reaching maturity earlier, being able to inhabit more ephemeral suboptimal substrata.</div>
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Assessment of space utilisation in a subtidal temperate bryozoan community

Assessment of space utilisation in a subtidal temperate bryozoan community

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri