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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
18/09/2008 |
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Data da última atualização: |
18/09/2008 |
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Autoria: |
SILVA, P. M. da; BERG, M. P.; BOLGER, T.; GAMA, M. M. da; LUKKARI, T.; PONGE, J. F.; SÍMON, C.; TRASER, G.; VANBERGEN, A. J.; BRENNAN, A.; DUBS, F.; IVITIS, E.; STOFER, S.; WATT, A. D.; SOUSA, J. P. |
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Título: |
Can species traits tell a more consistent story than taxonomical composition? A study on effects of a forest fragmentation gradient on Collembola over 8 European countries. |
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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: |
Land-use intensification along with a gradient of forest fragmentation is known to negatively
affect diversity of soil collembolan communities at the local level. This assumption was
supported by the results of the former EU BIOASSESS project, where the effects derived
from changes of landscape composition and structure along a land-use intensification gradient
(within 8 European countries) were evaluated following a traditional ?taxonomical? approach.
However, the biodiversity assessment based on this approach did not show a common
pattern between countries along the forest fragmentation gradient. Eco-morphological and
life-history traits such as dispersal behaviour, habitat width, life forms and reproductive
strategies could draw a more informative picture of diversity changes originated by the
dynamics of the landscape. For instance, traits that allow species to survive in dynamic
landscapes (fast-dispersal species), such as heterogeneous agro-forest mosaics, are likely
to be different from those allowing species to persist locally, and may be related to the
colonising ability of the species. On the other hand, slow-dispersal collembolans able to
survive in highly disturbed monotonous agricultural landscapes (tolerant species), are
expected to have a different trait composition in relation to the sensitive slow-dispersal species
occurring in the homogenous forest landscapes. In this way the response of species diversity
patterns to the forest fragmentation gradient could be more clearly explained by the underlying
collembolan trait structure emerging in each landscape type. So far there are only few attempts
to assess the impact of disturbance on collembolan communities using traits, probably due
to a lack of data on several species. In this study, based on an extensive collembolan trait
database, we revisited the BIOASSESS datasets and focused the analysis on the response
of collembolan trait patterns to the forest fragmentation gradient at each one of the 8 studied
European sites. The aim is to examine the extent to which life-history and eco-morphological
traits are able to depict a common response pattern of collembolan communities among
countries as an effect of the changes of landscape composition and structure. At each country
we have analysed the total functional diversity (trait dissimilarity) on each landscape window
along the fragmentation gradient and also the functional diversity of three major groups of
species, i.e., those species decreasing in abundance, species increasing in abundance,
and species not significantly changing in abundance along the gradient. A common response
pattern to fragmentation among the different countries could be found not only when looking
at the different landscape windows, but especially when analysing each one of the three
groups of species. Among the different groups of traits considered in the analysis, those
more related to dispersal behaviour were the ones contributing most for observed similar
response pattern among countries. This analysis revealed that species traits could be a
good alternative tool to the traditional taxonomic approach when trying to define common
response trends of communities to disturbance regimes MenosLand-use intensification along with a gradient of forest fragmentation is known to negatively
affect diversity of soil collembolan communities at the local level. This assumption was
supported by the results of the former EU BIOASSESS project, where the effects derived
from changes of landscape composition and structure along a land-use intensification gradient
(within 8 European countries) were evaluated following a traditional ?taxonomical? approach.
However, the biodiversity assessment based on this approach did not show a common
pattern between countries along the forest fragmentation gradient. Eco-morphological and
life-history traits such as dispersal behaviour, habitat width, life forms and reproductive
strategies could draw a more informative picture of diversity changes originated by the
dynamics of the landscape. For instance, traits that allow species to survive in dynamic
landscapes (fast-dispersal species), such as heterogeneous agro-forest mosaics, are likely
to be different from those allowing species to persist locally, and may be related to the
colonising ability of the species. On the other hand, slow-dispersal collembolans able to
survive in highly disturbed monotonous agricultural landscapes (tolerant species), are
expected to have a different trait composition in relation to the sensitive slow-dispersal species
occurring in the homogenous forest landscapes. In this way the response of species diversity
patterns to the forest fragmentation gradient could ... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 04338naa a2200289 a 4500
001 1314876
005 2008-09-18
008 2008 bl uuuu u00u1 u #d
100 1 $aSILVA, P. M. da
245 $aCan species traits tell a more consistent story than taxonomical composition? A study on effects of a forest fragmentation gradient on Collembola over 8 European countries.
260 $c2008
520 $aLand-use intensification along with a gradient of forest fragmentation is known to negatively affect diversity of soil collembolan communities at the local level. This assumption was supported by the results of the former EU BIOASSESS project, where the effects derived from changes of landscape composition and structure along a land-use intensification gradient (within 8 European countries) were evaluated following a traditional ?taxonomical? approach. However, the biodiversity assessment based on this approach did not show a common pattern between countries along the forest fragmentation gradient. Eco-morphological and life-history traits such as dispersal behaviour, habitat width, life forms and reproductive strategies could draw a more informative picture of diversity changes originated by the dynamics of the landscape. For instance, traits that allow species to survive in dynamic landscapes (fast-dispersal species), such as heterogeneous agro-forest mosaics, are likely to be different from those allowing species to persist locally, and may be related to the colonising ability of the species. On the other hand, slow-dispersal collembolans able to survive in highly disturbed monotonous agricultural landscapes (tolerant species), are expected to have a different trait composition in relation to the sensitive slow-dispersal species occurring in the homogenous forest landscapes. In this way the response of species diversity patterns to the forest fragmentation gradient could be more clearly explained by the underlying collembolan trait structure emerging in each landscape type. So far there are only few attempts to assess the impact of disturbance on collembolan communities using traits, probably due to a lack of data on several species. In this study, based on an extensive collembolan trait database, we revisited the BIOASSESS datasets and focused the analysis on the response of collembolan trait patterns to the forest fragmentation gradient at each one of the 8 studied European sites. The aim is to examine the extent to which life-history and eco-morphological traits are able to depict a common response pattern of collembolan communities among countries as an effect of the changes of landscape composition and structure. At each country we have analysed the total functional diversity (trait dissimilarity) on each landscape window along the fragmentation gradient and also the functional diversity of three major groups of species, i.e., those species decreasing in abundance, species increasing in abundance, and species not significantly changing in abundance along the gradient. A common response pattern to fragmentation among the different countries could be found not only when looking at the different landscape windows, but especially when analysing each one of the three groups of species. Among the different groups of traits considered in the analysis, those more related to dispersal behaviour were the ones contributing most for observed similar response pattern among countries. This analysis revealed that species traits could be a good alternative tool to the traditional taxonomic approach when trying to define common response trends of communities to disturbance regimes
700 1 $aBERG, M. P.
700 1 $aBOLGER, T.
700 1 $aGAMA, M. M. da
700 1 $aLUKKARI, T.
700 1 $aPONGE, J. F.
700 1 $aSÍMON, C.
700 1 $aTRASER, G.
700 1 $aVANBERGEN, A. J.
700 1 $aBRENNAN, A.
700 1 $aDUBS, F.
700 1 $aIVITIS, E.
700 1 $aSTOFER, S.
700 1 $aWATT, A. D.
700 1 $aSOUSA, J. P.
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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Biblioteca |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
15/12/2009 |
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Data da última atualização: |
18/05/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
LÔBO, A. M. B. O.; LOBO, R. N. B.; PAIVA, S. R.; OLIVEIRA, S. M. P. de; FACO, O. |
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Afiliação: |
Ana Maria Bezerra Oliveira Lôbo, Universidade Federal do Ceará (UFC); RAIMUNDO NONATO BRAGA LOBO, CNPC; SAMUEL REZENDE PAIVA, CENARGEN; Sônia Maria Pinheiro de Oliveira, Universidade Federal do Ceará (UFC); OLIVARDO FACO, CNPC. |
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Título: |
Genetic parameters for growth, reproductive and maternal traits in a multibreed meat sheep population. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, v. 32, n. 4, p. 761-770, 2009. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
The genetic parameters for growth, reproductive and maternal traits in a multibreed meat sheep population were estimated by applying the Average Information Restricted Maximum Likelihood method to an animal model. Data from a flock supported by the Programa de Melhoramento Genético de Caprinos e Ovinos de Corte (GENECOC) were used. The traits studied included birth weight (BW), weaning weight (WW), slaughter weight (SW), yearling weight (YW), weight gain from birth to weaning (GBW), weight gain from weaning to slaughter (GWS), weight gain from weaning to yearling (GWY), age at first lambing (AFL), lambing interval (LI), gestation length (GL), lambing date (LD - number of days between the start of breeding season and lambing), litter weight at birth (LWB) and litter weight at weaning (LWW). The direct heritabilities were 0.35, 0.81, 0.65, 0.49, 0.20, 0.15 and 0.39 for BW, WW, SW, YW, GBW, GWS and GWY, respectively, and 0.04, 0.06, 0.10, 0.05, 0.15 and 0.11 for AFL, LI, GL, LD, LWB and LWW, respectively. Positive genetic correlations were observed among body weights. In contrast, there was a negative genetic correlation between GBW and GWS (-0.49) and GBW and GWY (-0.56). Positive genetic correlations were observed between AFL and LI, LI and GL, and LWB and LWW. These results indicate a strong maternal influence in this herd and the presence of sufficient genetic variation to allow mass selection for growth traits. Additive effects were of little importance for reproductive traits, and other strategies are necessary to improve the performance of these animals. MenosThe genetic parameters for growth, reproductive and maternal traits in a multibreed meat sheep population were estimated by applying the Average Information Restricted Maximum Likelihood method to an animal model. Data from a flock supported by the Programa de Melhoramento Genético de Caprinos e Ovinos de Corte (GENECOC) were used. The traits studied included birth weight (BW), weaning weight (WW), slaughter weight (SW), yearling weight (YW), weight gain from birth to weaning (GBW), weight gain from weaning to slaughter (GWS), weight gain from weaning to yearling (GWY), age at first lambing (AFL), lambing interval (LI), gestation length (GL), lambing date (LD - number of days between the start of breeding season and lambing), litter weight at birth (LWB) and litter weight at weaning (LWW). The direct heritabilities were 0.35, 0.81, 0.65, 0.49, 0.20, 0.15 and 0.39 for BW, WW, SW, YW, GBW, GWS and GWY, respectively, and 0.04, 0.06, 0.10, 0.05, 0.15 and 0.11 for AFL, LI, GL, LD, LWB and LWW, respectively. Positive genetic correlations were observed among body weights. In contrast, there was a negative genetic correlation between GBW and GWS (-0.49) and GBW and GWY (-0.56). Positive genetic correlations were observed between AFL and LI, LI and GL, and LWB and LWW. These results indicate a strong maternal influence in this herd and the presence of sufficient genetic variation to allow mass selection for growth traits. Additive effects were of little importance for reproductive tr... Mostrar Tudo |
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Palavras-Chave: |
Cross-breeding; Herdabilidade; Peso de leitegada. |
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Thesagro: |
Genética Animal; Ovino; Peso ao Nascer; Variação Genética. |
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Thesaurus NAL: |
Age; Body weight; Crossbreds; Genetic correlation; Genetic variation; Heritability; Litter weight; Parturition interval; Sheep meat. |
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Categoria do assunto: |
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G Melhoramento Genético |
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Marc: |
LEADER 02610naa a2200361 a 4500
001 1658322
005 2015-05-18
008 2009 bl uuuu u00u1 u #d
100 1 $aLÔBO, A. M. B. O.
245 $aGenetic parameters for growth, reproductive and maternal traits in a multibreed meat sheep population.$h[electronic resource]
260 $c2009
520 $aThe genetic parameters for growth, reproductive and maternal traits in a multibreed meat sheep population were estimated by applying the Average Information Restricted Maximum Likelihood method to an animal model. Data from a flock supported by the Programa de Melhoramento Genético de Caprinos e Ovinos de Corte (GENECOC) were used. The traits studied included birth weight (BW), weaning weight (WW), slaughter weight (SW), yearling weight (YW), weight gain from birth to weaning (GBW), weight gain from weaning to slaughter (GWS), weight gain from weaning to yearling (GWY), age at first lambing (AFL), lambing interval (LI), gestation length (GL), lambing date (LD - number of days between the start of breeding season and lambing), litter weight at birth (LWB) and litter weight at weaning (LWW). The direct heritabilities were 0.35, 0.81, 0.65, 0.49, 0.20, 0.15 and 0.39 for BW, WW, SW, YW, GBW, GWS and GWY, respectively, and 0.04, 0.06, 0.10, 0.05, 0.15 and 0.11 for AFL, LI, GL, LD, LWB and LWW, respectively. Positive genetic correlations were observed among body weights. In contrast, there was a negative genetic correlation between GBW and GWS (-0.49) and GBW and GWY (-0.56). Positive genetic correlations were observed between AFL and LI, LI and GL, and LWB and LWW. These results indicate a strong maternal influence in this herd and the presence of sufficient genetic variation to allow mass selection for growth traits. Additive effects were of little importance for reproductive traits, and other strategies are necessary to improve the performance of these animals.
650 $aAge
650 $aBody weight
650 $aCrossbreds
650 $aGenetic correlation
650 $aGenetic variation
650 $aHeritability
650 $aLitter weight
650 $aParturition interval
650 $aSheep meat
650 $aGenética Animal
650 $aOvino
650 $aPeso ao Nascer
650 $aVariação Genética
653 $aCross-breeding
653 $aHerdabilidade
653 $aPeso de leitegada
700 1 $aLOBO, R. N. B.
700 1 $aPAIVA, S. R.
700 1 $aOLIVEIRA, S. M. P. de
700 1 $aFACO, O.
773 $tGenetics and Molecular Biology$gv. 32, n. 4, p. 761-770, 2009.
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