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No. de sistema: 000041773

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040 _ _ a| ECO
c| ECO
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a| n-mx-ve
a| n-mx-hi
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245 0 0 a| Negative impacts of human land use on dung beetle functional diversity
520 1 _ a| The loss of biodiversity caused by human activity is assumed to alter ecosystem functioning. However our understanding of the magnitude of the effect of these changes on functional diversity and their impact on the dynamics of ecological processes is still limited. We analyzed the functional diversity of copro-necrophagous beetles under different conditions of land use in three Mexican biosphere reserves. In Montes Azules pastures, forest fragments and continuous rainforest were analyzed, in Los Tuxtlas rainforest fragments of different sizes were analyzed and in Barranca de Metztitlán two types of xerophile scrub with different degrees of disturbance from grazing were analyzed. We assigned dung beetle species to functional groups based on food relocation, beetle size, daily activity period and food preferences, and as measures of functional diversity we used estimates based on multivariate methods. In Montes Azules functional richness was lower in the pastures than in continuous rainforest and rainforest fragments, but fragments and continuous forest include functionally redundant species. In small rainforest fragments (<5 ha) in Los Tuxtlas, dung beetle functional richness was lower than in large rainforest fragments (>20 ha). Functional evenness and functional dispersion did not vary among habitat types or fragment size in these reserves. In contrast, in Metztitlán, functional richness and functional dispersion were different among the vegetation types, but differences were not related to the degree of disturbance by grazing. More redundant species were found in submontane than in crassicaule scrub.
520 1 _ a| For the first time, a decrease in the functional diversity in communities of copro-necrophagous beetles resulting from changes in land use is documented, the potential implications for ecosystem functioning are discussed and a series of variables that could improve the evaluation of functional diversity for this biological group is proposed.
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Escarabajos copronecrófagos
650 _ 4 a| Grupo funcional
650 _ 4 a| Paisajes fragmentados
650 _ 4 a| Población animal
651 _ 4 a| Reserva de la Biosfera Montes Azules (Chiapas, México)
651 _ 4 a| Reserva de la Biosfera Los Tuxtlas (Veracruz de Ignacio de la Llave, México)
651 _ 4 a| Reserva de la Biosfera Barranca de Metztitlán (Hidalgo, México)
700 1 _ a| Barragán Torres, Felipe
n| 22950095000
700 1 _ a| Moreno Ortega, Claudia Elizabeth
e| coaut.
n| 35727143000
700 1 _ a| Escobar Sarria, Federico
e| coaut.
700 1 _ a| Halffter Salas, Gonzalo
e| coaut.
700 1 _ a| Navarrete Gutiérrez, Darío Alejandro
e| coaut.
773 0 _
t| PLoS ONE
g| Vol. 6, no. 3, e17976 (2011), p, 1-8
x| 1932-6203
856 4 1 u| http://www.uaeh.edu.mx/investigacion/icbi/LI_DiversidadBiol/claudia_moreno/PLosONE.pdf
z| Artículo electrónico
856 _ _ u| http://aleph.ecosur.mx:8991/F?func=service&doc_library=CFS01&local_base=CFS01&doc_number=000041773&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
y| Artículo electrónico
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG/ MM
904 _ _ a| Julio 2011
905 _ _ a| Artecosur
905 _ _ a| Artfrosur
905 _ _ a| Biblioelectrónica
LNG eng
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Negative impacts of human land use on dung beetle functional diversity
Barragán Torres, Felipe (autor)
Moreno Ortega, Claudia Elizabeth (autor)
Escobar Sarria, Federico (autor)
Halffter Salas, Gonzalo (autor)
Navarrete Gutiérrez, Darío Alejandro (autor)
Contenido en: PLoS ONE. Vol. 6, no. 3, e17976 (2011), p, 1-8. ISSN: 1932-6203
No. de sistema: 41773
Tipo: - Artículo con arbitraje
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Inglés

"The loss of biodiversity caused by human activity is assumed to alter ecosystem functioning. However our understanding of the magnitude of the effect of these changes on functional diversity and their impact on the dynamics of ecological processes is still limited. We analyzed the functional diversity of copro-necrophagous beetles under different conditions of land use in three Mexican biosphere reserves. In Montes Azules pastures, forest fragments and continuous rainforest were analyzed, in Los Tuxtlas rainforest fragments of different sizes were analyzed and in Barranca de Metztitlán two types of xerophile scrub with different degrees of disturbance from grazing were analyzed. We assigned dung beetle species to functional groups based on food relocation, beetle size, daily activity period and food preferences, and as measures of functional diversity we used estimates based on multivariate methods. In Montes Azules functional richness was lower in the pastures than in continuous rainforest and rainforest fragments, but fragments and continuous forest include functionally redundant species. In small rainforest fragments (<5 ha) in Los Tuxtlas, dung beetle functional richness was lower than in large rainforest fragments (>20 ha). Functional evenness and functional dispersion did not vary among habitat types or fragment size in these reserves. In contrast, in Metztitlán, functional richness and functional dispersion were different among the vegetation types, but differences were not related to the degree of disturbance by grazing. More redundant species were found in submontane than in crassicaule scrub."

"For the first time, a decrease in the functional diversity in communities of copro-necrophagous beetles resulting from changes in land use is documented, the potential implications for ecosystem functioning are discussed and a series of variables that could improve the evaluation of functional diversity for this biological group is proposed."


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