Agricultural land-use, avian nesting and rarity in the Pampas of central Argentina
Human-mediated changes in land-use have affected many bird species in South America, and other regions where agroecosystems are now the most common environments. We evaluate how the rarity of landbird species in agroecosystems is influenced by their specialisation in nesting habitat. We estimated ra...
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todo:paper_01584197_v112_n1_p46_Codesido2023-10-03T15:01:11Z Agricultural land-use, avian nesting and rarity in the Pampas of central Argentina Codesido, M. González-Fischer, C. Bilenca, D. agroecosystems area of occupancy commonness grassland birds local abundance abundance agricultural ecosystem agricultural land anthropogenic effect avifauna conservation management generalist grassland human activity land use change nature-society relations nest site rare species rarity specialist woodland Argentina Pampas Aves Human-mediated changes in land-use have affected many bird species in South America, and other regions where agroecosystems are now the most common environments. We evaluate how the rarity of landbird species in agroecosystems is influenced by their specialisation in nesting habitat. We estimated rarity of species by their local abundance and area of occupancy in the Pampas of Argentina. Relative local abundance was positively associated with area of occupancy. Most rare species (9 of 14) were specialists, whereas 15 of the 21 common species were generalists. Both woodland and grassland specialists had smaller areas of occupancy than generalist species. This pattern was expected for woodland specialists, owing to a lack of woodland in the agroecosystems of the Pampas. In the case of grassland specialists, the pattern might reflect the destruction of natural grasslands owing to an increase of agriculture. Wetland specialists were an exception within specialists, probably because they share characteristics with common species, such as flocking behaviour and use different feeding habitats. Our results show that some grassland species of increased conservation concern in the Pampas are facing the threat of extinction associated with low local abundance and limited distribution, emphasising the need for further conservation effort. © 2012 Royal Australasian Ornithologists Union. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01584197_v112_n1_p46_Codesido |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
agroecosystems area of occupancy commonness grassland birds local abundance abundance agricultural ecosystem agricultural land anthropogenic effect avifauna conservation management generalist grassland human activity land use change nature-society relations nest site rare species rarity specialist woodland Argentina Pampas Aves |
| spellingShingle |
agroecosystems area of occupancy commonness grassland birds local abundance abundance agricultural ecosystem agricultural land anthropogenic effect avifauna conservation management generalist grassland human activity land use change nature-society relations nest site rare species rarity specialist woodland Argentina Pampas Aves Codesido, M. González-Fischer, C. Bilenca, D. Agricultural land-use, avian nesting and rarity in the Pampas of central Argentina |
| topic_facet |
agroecosystems area of occupancy commonness grassland birds local abundance abundance agricultural ecosystem agricultural land anthropogenic effect avifauna conservation management generalist grassland human activity land use change nature-society relations nest site rare species rarity specialist woodland Argentina Pampas Aves |
| description |
Human-mediated changes in land-use have affected many bird species in South America, and other regions where agroecosystems are now the most common environments. We evaluate how the rarity of landbird species in agroecosystems is influenced by their specialisation in nesting habitat. We estimated rarity of species by their local abundance and area of occupancy in the Pampas of Argentina. Relative local abundance was positively associated with area of occupancy. Most rare species (9 of 14) were specialists, whereas 15 of the 21 common species were generalists. Both woodland and grassland specialists had smaller areas of occupancy than generalist species. This pattern was expected for woodland specialists, owing to a lack of woodland in the agroecosystems of the Pampas. In the case of grassland specialists, the pattern might reflect the destruction of natural grasslands owing to an increase of agriculture. Wetland specialists were an exception within specialists, probably because they share characteristics with common species, such as flocking behaviour and use different feeding habitats. Our results show that some grassland species of increased conservation concern in the Pampas are facing the threat of extinction associated with low local abundance and limited distribution, emphasising the need for further conservation effort. © 2012 Royal Australasian Ornithologists Union. |
| format |
JOUR |
| author |
Codesido, M. González-Fischer, C. Bilenca, D. |
| author_facet |
Codesido, M. González-Fischer, C. Bilenca, D. |
| author_sort |
Codesido, M. |
| title |
Agricultural land-use, avian nesting and rarity in the Pampas of central Argentina |
| title_short |
Agricultural land-use, avian nesting and rarity in the Pampas of central Argentina |
| title_full |
Agricultural land-use, avian nesting and rarity in the Pampas of central Argentina |
| title_fullStr |
Agricultural land-use, avian nesting and rarity in the Pampas of central Argentina |
| title_full_unstemmed |
Agricultural land-use, avian nesting and rarity in the Pampas of central Argentina |
| title_sort |
agricultural land-use, avian nesting and rarity in the pampas of central argentina |
| url |
http://hdl.handle.net/20.500.12110/paper_01584197_v112_n1_p46_Codesido |
| work_keys_str_mv |
AT codesidom agriculturallanduseaviannestingandrarityinthepampasofcentralargentina AT gonzalezfischerc agriculturallanduseaviannestingandrarityinthepampasofcentralargentina AT bilencad agriculturallanduseaviannestingandrarityinthepampasofcentralargentina |
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1807319019284332544 |