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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
15/09/2008 |
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Data da última atualização: |
15/09/2008 |
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Autoria: |
SILVA, P. M. da; AGUIAR, C. A. S.; NIEMELÄ, J.; SOUSA, J. P.; SERRANO, A. R. M. |
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Título: |
Diversity patterns of ground-beetles (Coleoptera: Carabidae) along a gradient of land-use intensification in a Mediterranean landscape. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
Human-induced disturbance related to land-use intensification, such as agricultural and
silvicultural practices, has lead to a depletion of biodiversity in agro-forestry systems. Nevertheless,
regarding the Mediterranean region, some activities like traditional grazing have favoured habitat
heterogeneity, increasing species diversity. This extensive management, according to the
Intermediate Disturbance Hypothesis, can promote biodiversity by providing a dynamic mosaic
pattern of closed and open habitats. Ground-beetles are a widely distributed group of insects
that usually dominate agro-ecosystem biocoenosis. Considering their sensitiveness to landscape
structure and land-use changes, ground-beetles were used to monitor biodiversity along a
gradient of land-use intensification, from old-growth cork-oak woodland to an agriculture
monoculture, in a typical Mediterranean landscape (in 2001 and 2002). The work also included
a land-use unit of Eucalyptus plantation in the second year. During this study, a total of 11 294
individuals of ground-beetles were sampled, grouped in 101 different species (2001: N=4776,
S=80; 2002: N=6518, S=77). Agricultural unit recorded the highest abundance and diversity
levels, while the eucalyptus unit recorded the lowest values. Concerning ground-beetles? diversity
patterns, a Canonical Correspondence Analysis clearly differentiated open areas from closed
woodlands. Mosaic landscapes with major cork-oak cover revealed a higher abundance and
number of species that are more sensitive to human disturbance, i.e. woodland specialists.
These results showed that despite the higher diversity found in open areas, habitat heterogeneity
in agro-ecosystems is crucial for species turnover between those and woodland field boundaries
and therefore for ground-beetle conservation in typical Mediterranean landscapes MenosHuman-induced disturbance related to land-use intensification, such as agricultural and
silvicultural practices, has lead to a depletion of biodiversity in agro-forestry systems. Nevertheless,
regarding the Mediterranean region, some activities like traditional grazing have favoured habitat
heterogeneity, increasing species diversity. This extensive management, according to the
Intermediate Disturbance Hypothesis, can promote biodiversity by providing a dynamic mosaic
pattern of closed and open habitats. Ground-beetles are a widely distributed group of insects
that usually dominate agro-ecosystem biocoenosis. Considering their sensitiveness to landscape
structure and land-use changes, ground-beetles were used to monitor biodiversity along a
gradient of land-use intensification, from old-growth cork-oak woodland to an agriculture
monoculture, in a typical Mediterranean landscape (in 2001 and 2002). The work also included
a land-use unit of Eucalyptus plantation in the second year. During this study, a total of 11 294
individuals of ground-beetles were sampled, grouped in 101 different species (2001: N=4776,
S=80; 2002: N=6518, S=77). Agricultural unit recorded the highest abundance and diversity
levels, while the eucalyptus unit recorded the lowest values. Concerning ground-beetles? diversity
patterns, a Canonical Correspondence Analysis clearly differentiated open areas from closed
woodlands. Mosaic landscapes with major cork-oak cover revealed a higher abundance and
number ... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02658naa a2200169 a 4500
001 1314790
005 2008-09-15
008 2008 bl uuuu u00u1 u #d
100 1 $aSILVA, P. M. da
245 $aDiversity patterns of ground-beetles (Coleoptera$bCarabidae) along a gradient of land-use intensification in a Mediterranean landscape.
260 $c2008
520 $aHuman-induced disturbance related to land-use intensification, such as agricultural and silvicultural practices, has lead to a depletion of biodiversity in agro-forestry systems. Nevertheless, regarding the Mediterranean region, some activities like traditional grazing have favoured habitat heterogeneity, increasing species diversity. This extensive management, according to the Intermediate Disturbance Hypothesis, can promote biodiversity by providing a dynamic mosaic pattern of closed and open habitats. Ground-beetles are a widely distributed group of insects that usually dominate agro-ecosystem biocoenosis. Considering their sensitiveness to landscape structure and land-use changes, ground-beetles were used to monitor biodiversity along a gradient of land-use intensification, from old-growth cork-oak woodland to an agriculture monoculture, in a typical Mediterranean landscape (in 2001 and 2002). The work also included a land-use unit of Eucalyptus plantation in the second year. During this study, a total of 11 294 individuals of ground-beetles were sampled, grouped in 101 different species (2001: N=4776, S=80; 2002: N=6518, S=77). Agricultural unit recorded the highest abundance and diversity levels, while the eucalyptus unit recorded the lowest values. Concerning ground-beetles? diversity patterns, a Canonical Correspondence Analysis clearly differentiated open areas from closed woodlands. Mosaic landscapes with major cork-oak cover revealed a higher abundance and number of species that are more sensitive to human disturbance, i.e. woodland specialists. These results showed that despite the higher diversity found in open areas, habitat heterogeneity in agro-ecosystems is crucial for species turnover between those and woodland field boundaries and therefore for ground-beetle conservation in typical Mediterranean landscapes
700 1 $aAGUIAR, C. A. S.
700 1 $aNIEMELÄ, J.
700 1 $aSOUSA, J. P.
700 1 $aSERRANO, A. R. M.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
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Registro original: |
Embrapa Florestas (CNPF) |
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