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Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field
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| Zeitschriftentitel: | Austral Ecology |
|---|---|
| Personen und Körperschaften: | |
| In: | Austral Ecology, 27, 2002, 2, S. 211-228 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
|
| Schlagwörter: |
| author_facet |
Chapman, M. G. Chapman, M. G. |
|---|---|
| author |
Chapman, M. G. |
| spellingShingle |
Chapman, M. G. Austral Ecology Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field Ecology Ecology, Evolution, Behavior and Systematics |
| author_sort |
chapman, m. g. |
| spelling |
Chapman, M. G. 1442-9985 1442-9993 Wiley Ecology Ecology, Evolution, Behavior and Systematics http://dx.doi.org/10.1046/j.1442-9993.2002.01172.x <jats:p><jats:bold>Abstract </jats:bold> Spatial and temporal patterns of abundance of animals and plants must be quantified before models to explain distributions can be developed. These patterns also provide essential data for measuring potential effects of environmental disturbances. Studies in many different habitats have shown that most organisms, particularly invertebrates, have highly variable and interactive patterns of abundance, with much variability at the smallest temporal and spatial scales. Intertidal boulder fields in New South Wales, Australia, support a diverse fauna, many species of which are relatively rare. These habitats are commonly found near rock‐platforms and in sheltered estuaries and are subjected to many human disturbances. Although there have been a few studies on the fauna in boulder fields, none has documented variability of the assemblage using multivariate and univariate techniques and most studies have not incorporated different spatial and temporal scales. This study quantifies spatial variation at three scales (metres, tens of metres alongshore and tens of metres upshore) and temporal variation at two scales (3 months and 2 years) of the assemblage of molluscs and echinoderms in a sheltered boulder field subjected to little natural or human disturbance. Multivariate analyses revealed that each site contained a distinct assemblage, mainly due to the relative abundances of a few species. Most species, those generally only found under boulders and common, widespread species, had considerable spatial variability in abundances, with more than 90% measured at the smallest scale, that is metre to metre within a site. Changes in abundances over 3 months or 2 years varied among species and sites in unpredictable ways. These data show that sampling designs to measure impacts on these fauna will need to be complex and must incorporate a number of spatial and temporal scales if they are to be able to detect impact against such a variable background.</jats:p> Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field Austral Ecology |
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Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_unstemmed |
Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_full |
Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_fullStr |
Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_full_unstemmed |
Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_short |
Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_sort |
patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| topic |
Ecology Ecology, Evolution, Behavior and Systematics |
| url |
http://dx.doi.org/10.1046/j.1442-9993.2002.01172.x |
| publishDate |
2002 |
| physical |
211-228 |
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<jats:p><jats:bold>Abstract
</jats:bold> Spatial and temporal patterns of abundance of animals and plants must be quantified before models to explain distributions can be developed. These patterns also provide essential data for measuring potential effects of environmental disturbances. Studies in many different habitats have shown that most organisms, particularly invertebrates, have highly variable and interactive patterns of abundance, with much variability at the smallest temporal and spatial scales. Intertidal boulder fields in New South Wales, Australia, support a diverse fauna, many species of which are relatively rare. These habitats are commonly found near rock‐platforms and in sheltered estuaries and are subjected to many human disturbances. Although there have been a few studies on the fauna in boulder fields, none has documented variability of the assemblage using multivariate and univariate techniques and most studies have not incorporated different spatial and temporal scales. This study quantifies spatial variation at three scales (metres, tens of metres alongshore and tens of metres upshore) and temporal variation at two scales (3 months and 2 years) of the assemblage of molluscs and echinoderms in a sheltered boulder field subjected to little natural or human disturbance. Multivariate analyses revealed that each site contained a distinct assemblage, mainly due to the relative abundances of a few species. Most species, those generally only found under boulders and common, widespread species, had considerable spatial variability in abundances, with more than 90% measured at the smallest scale, that is metre to metre within a site. Changes in abundances over 3 months or 2 years varied among species and sites in unpredictable ways. These data show that sampling designs to measure impacts on these fauna will need to be complex and must incorporate a number of spatial and temporal scales if they are to be able to detect impact against such a variable background.</jats:p> |
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| description | <jats:p><jats:bold>Abstract </jats:bold> Spatial and temporal patterns of abundance of animals and plants must be quantified before models to explain distributions can be developed. These patterns also provide essential data for measuring potential effects of environmental disturbances. Studies in many different habitats have shown that most organisms, particularly invertebrates, have highly variable and interactive patterns of abundance, with much variability at the smallest temporal and spatial scales. Intertidal boulder fields in New South Wales, Australia, support a diverse fauna, many species of which are relatively rare. These habitats are commonly found near rock‐platforms and in sheltered estuaries and are subjected to many human disturbances. Although there have been a few studies on the fauna in boulder fields, none has documented variability of the assemblage using multivariate and univariate techniques and most studies have not incorporated different spatial and temporal scales. This study quantifies spatial variation at three scales (metres, tens of metres alongshore and tens of metres upshore) and temporal variation at two scales (3 months and 2 years) of the assemblage of molluscs and echinoderms in a sheltered boulder field subjected to little natural or human disturbance. Multivariate analyses revealed that each site contained a distinct assemblage, mainly due to the relative abundances of a few species. Most species, those generally only found under boulders and common, widespread species, had considerable spatial variability in abundances, with more than 90% measured at the smallest scale, that is metre to metre within a site. Changes in abundances over 3 months or 2 years varied among species and sites in unpredictable ways. These data show that sampling designs to measure impacts on these fauna will need to be complex and must incorporate a number of spatial and temporal scales if they are to be able to detect impact against such a variable background.</jats:p> |
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| spelling | Chapman, M. G. 1442-9985 1442-9993 Wiley Ecology Ecology, Evolution, Behavior and Systematics http://dx.doi.org/10.1046/j.1442-9993.2002.01172.x <jats:p><jats:bold>Abstract </jats:bold> Spatial and temporal patterns of abundance of animals and plants must be quantified before models to explain distributions can be developed. These patterns also provide essential data for measuring potential effects of environmental disturbances. Studies in many different habitats have shown that most organisms, particularly invertebrates, have highly variable and interactive patterns of abundance, with much variability at the smallest temporal and spatial scales. Intertidal boulder fields in New South Wales, Australia, support a diverse fauna, many species of which are relatively rare. These habitats are commonly found near rock‐platforms and in sheltered estuaries and are subjected to many human disturbances. Although there have been a few studies on the fauna in boulder fields, none has documented variability of the assemblage using multivariate and univariate techniques and most studies have not incorporated different spatial and temporal scales. This study quantifies spatial variation at three scales (metres, tens of metres alongshore and tens of metres upshore) and temporal variation at two scales (3 months and 2 years) of the assemblage of molluscs and echinoderms in a sheltered boulder field subjected to little natural or human disturbance. Multivariate analyses revealed that each site contained a distinct assemblage, mainly due to the relative abundances of a few species. Most species, those generally only found under boulders and common, widespread species, had considerable spatial variability in abundances, with more than 90% measured at the smallest scale, that is metre to metre within a site. Changes in abundances over 3 months or 2 years varied among species and sites in unpredictable ways. These data show that sampling designs to measure impacts on these fauna will need to be complex and must incorporate a number of spatial and temporal scales if they are to be able to detect impact against such a variable background.</jats:p> Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field Austral Ecology |
| spellingShingle | Chapman, M. G., Austral Ecology, Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field, Ecology, Ecology, Evolution, Behavior and Systematics |
| title | Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_full | Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_fullStr | Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_full_unstemmed | Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_short | Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_sort | patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| title_unstemmed | Patterns of spatial and temporal variation of macrofauna under boulders in a sheltered boulder field |
| topic | Ecology, Ecology, Evolution, Behavior and Systematics |
| url | http://dx.doi.org/10.1046/j.1442-9993.2002.01172.x |