Spatial and temporal effects of land use change as potential drivers of odonate community composition but not species richness
Por:
Rocha-Ortega M., Rodríguez P., Córdoba-Aguilar A.
Publicada:
1 feb 2019
Ahead of Print:
1 ene 2018
Resumen:
Land-use changes and land cover change are drivers of diversity. The
effects of such drivers over the temporal trend in species richness and
composition, particularly on invertebrate diversity in megadiverse
countries, is controversial. One key animal group to clarify this
controversy is that of odonate insects (dragonflies and damselflies),
given their combined close water-land requirements. We have investigated
whether changes in land use impact species richness and composition of
odonates from 1980 to 1993 (period I) to 1994-2010 (period II) in
Mexico. The effect of land use changes and land cover changes on species
richness was analyzed using multiple diversity measures and at different
spatial scales. In period II, an area reduction in original vegetation
and increase in land use occurred. Responses to land use varied among
spatial scales and measures of diversity but, overall, species richness
in the transformed area was higher than in the original vegetation.
However, species composition indicated a high species turnover inside
hydrologic regions (watersheds) and across land uses classes,
particularly between original and secondary vegetation. Our
interpretation is that despite high land use conversion in Mexico, adult
odonates seem resilient to land use change in terms of species richness,
but not in species composition, which is in partial agreement with the
intermediate disturbance hypothesis. Finally, we suggest that hydrologic
region scale and use of entropy maximization (HCDT entropy), could
provide a reliable biodiversity estimation of species loss associated
with land use change.
Filiaciones:
Rocha-Ortega M.:
Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Apdo. P. 70-275, Circuito Exterior, Ciudad Universitaria, Coyoacán, DF 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Evolut, Apdo P 70-275,Circuito Exterior,Ciudad Univ, Coyoacan 04510, DF, Mexico
Rodríguez P.:
Comisión Nacional para el Conocimiento y Uso de la Biodiversidad, Liga Periférico- Insurgentes Sur 4903 Col. Parques del Pedregal, Tlalpan, CP 14010, México, DF, Mexico
Comis Nacl Conocimiento & Uso Biodiversidad, Liga Perifer Insurgentes Sur 4903, Mexico City 14010, DF, Mexico
Comisión Nacional para el Conocimiento y Uso de la Biodiversidad, Liga Periférico- Insurgentes Sur 4903 Col. Parques del Pedregal, Tlalpan, México, DF CP 14010, Mexico
Córdoba-Aguilar A.:
Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Apdo. P. 70-275, Circuito Exterior, Ciudad Universitaria, Coyoacán, DF 04510, Mexico
Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Evolut, Apdo P 70-275,Circuito Exterior,Ciudad Univ, Coyoacan 04510, DF, Mexico
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