Effects of the 1997-1998 El Niño and 1998-1999 La Niña events on breeding waterbirds and sea lions in the Upper Gulf of California, México
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2003
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| author | Eric Mellink |
| author_facet | Eric Mellink |
| contents | Effects of the 1997-1998 El Niño and 1998-1999 La Niña events on breeding waterbirds and sea lions in the Upper Gulf of California, México Eric Mellink Ciencias de la Tierra El Niño La Niña Seabirds sea lions Upper Gulf of California During 1998 and 1999 I monitored waterbirds nesting on Isla San Jorge, at La Purinera and on Isla Montague, in thenorthern Gulf of California, as well as sea lions on Isla San Jorge. During El Niño the brown boobies on San Jorge ceased breedingand left the island, coinciding with an influx of several thousand blue-footed boobies. El Niño conditions coincided with anincrease in the numbers of nesting least, elegant, and royal terns and black skimmers on Montague. Double-crested cormorants onSan Jorge, least terns on La Purinera, and snowy egrets, black-crowned night-herons, laughing gulls, and gull-billed terns onMontague did not seem affected by this event. Sea lions at San Jorge about doubled their number, but the number of pups did notincrease. La Niña conditions coincided with a return to population levels before El Niño in all these species. During 1999 Heermannsgulls and Brandts cormorants nested on San Jorge. Heermanns gulls had stopped breeding there long ago, and Brandts cormorantshad never been know to nest there. 2003 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56842326 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_56842326 |
| institution | Redalyc |
| language | en |
| publishDate | 2003 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Effects of the 1997-1998 El Niño and 1998-1999 La Niña events on breeding waterbirds and sea lions in the Upper Gulf of California, México Eric Mellink Ciencias de la Tierra El Niño La Niña Seabirds sea lions Upper Gulf of California Effects of the 1997-1998 El Niño and 1998-1999 La Niña events on breeding waterbirds and sea lions in the Upper Gulf of California, México Eric Mellink Ciencias de la Tierra El Niño La Niña Seabirds sea lions Upper Gulf of California During 1998 and 1999 I monitored waterbirds nesting on Isla San Jorge, at La Purinera and on Isla Montague, in thenorthern Gulf of California, as well as sea lions on Isla San Jorge. During El Niño the brown boobies on San Jorge ceased breedingand left the island, coinciding with an influx of several thousand blue-footed boobies. El Niño conditions coincided with anincrease in the numbers of nesting least, elegant, and royal terns and black skimmers on Montague. Double-crested cormorants onSan Jorge, least terns on La Purinera, and snowy egrets, black-crowned night-herons, laughing gulls, and gull-billed terns onMontague did not seem affected by this event. Sea lions at San Jorge about doubled their number, but the number of pups did notincrease. La Niña conditions coincided with a return to population levels before El Niño in all these species. During 1999 Heermannsgulls and Brandts cormorants nested on San Jorge. Heermanns gulls had stopped breeding there long ago, and Brandts cormorantshad never been know to nest there. 2003 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56842326 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 | Effects of the 1997-1998 El Niño and 1998-1999 La Niña events on breeding waterbirds and sea lions in the Upper Gulf of California, México |
| topic | Ciencias de la Tierra El Niño La Niña Seabirds sea lions Upper Gulf of California |
| url | https://www.redalyc.org/articulo.oa?id=56842326 |