Rodent density anomalies in scrub vegetation areas as a response to ENSO 1997-98 in Baja California Sur, Mexico
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2003
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| author | Patricia Cortés Calva |
| author_facet | Patricia Cortés Calva |
| contents | Rodent density anomalies in scrub vegetation areas as a response to ENSO 1997-98 in Baja California Sur, Mexico Patricia Cortés Calva Sergio Ticul Álvarez Castañeda Ciencias de la Tierra ENSO rodents heteromyids scrub vegetation Baja California Sur ENSO significantly changed the annual patterns of rainfall and temperature for northwestern Mexico. Little is known abouthow seasonal environmental differences influence the long-term pattern of distribution and density of rodents in desert habitats ofNorth America. We report data from a long-term study (October 1994-December 1999) of two areas west of La Paz, Baja CaliforniaSur, Mexico. One is a natural preserve and the other is grazing land. Both have the same original vegetation, soil, and weather.Densities of rodent populations in both areas were compared.El Niños impact in La Paz region did not increase rainfall, as in other areas of Mexico. In the grazing area, monthly anomaliesof rodent density showed a significant impact from the ENSO event, but the preserve showed less impact. Rodent populationvariations can be related to the precipitation effect. In the grazing area, the effect is much stronger. During the rainy season, populationincreases, but in the dry period, the population strongly declines. The effect lasts many months, and is related to the reducednumber of perennial species. For altered desert areas, the dry season of ENSO was the most significance part of the event. 2003 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56842327 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.42 |
| format | Artículo científico |
| id | redalyc_56842327 |
| institution | Redalyc |
| language | en |
| publishDate | 2003 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Rodent density anomalies in scrub vegetation areas as a response to ENSO 1997-98 in Baja California Sur, Mexico Patricia Cortés Calva Ciencias de la Tierra ENSO rodents heteromyids scrub vegetation Baja California Sur Rodent density anomalies in scrub vegetation areas as a response to ENSO 1997-98 in Baja California Sur, Mexico Patricia Cortés Calva Sergio Ticul Álvarez Castañeda Ciencias de la Tierra ENSO rodents heteromyids scrub vegetation Baja California Sur ENSO significantly changed the annual patterns of rainfall and temperature for northwestern Mexico. Little is known abouthow seasonal environmental differences influence the long-term pattern of distribution and density of rodents in desert habitats ofNorth America. We report data from a long-term study (October 1994-December 1999) of two areas west of La Paz, Baja CaliforniaSur, Mexico. One is a natural preserve and the other is grazing land. Both have the same original vegetation, soil, and weather.Densities of rodent populations in both areas were compared.El Niños impact in La Paz region did not increase rainfall, as in other areas of Mexico. In the grazing area, monthly anomaliesof rodent density showed a significant impact from the ENSO event, but the preserve showed less impact. Rodent populationvariations can be related to the precipitation effect. In the grazing area, the effect is much stronger. During the rainy season, populationincreases, but in the dry period, the population strongly declines. The effect lasts many months, and is related to the reducednumber of perennial species. For altered desert areas, the dry season of ENSO was the most significance part of the event. 2003 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56842327 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.42 |
| title | Rodent density anomalies in scrub vegetation areas as a response to ENSO 1997-98 in Baja California Sur, Mexico |
| topic | Ciencias de la Tierra ENSO rodents heteromyids scrub vegetation Baja California Sur |
| url | https://www.redalyc.org/articulo.oa?id=56842327 |