Survey of Columnar Cacti and Carrying Capacity for Nectar‐Feeding Bats on Curaçao
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Zenodo
1996
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| author | Petit, Sophie Pors, Leon |
| author_facet | Petit, Sophie Pors, Leon |
| contents | (Uploaded by Plazi for the Bat Literature Project) We estimated the population sizes of the three species of columnar cacti that groul on the island of Cura~aousing ground and aerial transects, and we examined the island's carrying capacityfor tulo species of nectar@eding bats that depend on nectar from the flowers of these cacti. We calculated carrying capacity based on the daily availability of mature flowers between January and December 199.3 and the field energy requirements of bats as estimated from a n equationfor eutherian mammals (loul estimate) and oneforpasserine birds (high estimate) based on body mass. Additional energy requirements ofpregnancy and lactation were taken into account. We estimated that 461,172 columnar cacti were present on Cura~ao(38% Subpilocereus repandus, 51% Stenocereus griseus, and I I % Pilosocereus lanuginosus). May through September are the critical months when bats rely most heavily on cactusfor food. July 177-3 was a bottleneck u~iththe smallest number of maturefloulersper day.July and August were months of greatest energy demand becausefemales were lactating. We estimate that the carrying capacity for Glossophaga longirostris inJuly, u~henthe bat (Leptonycteris curasoae) population was 700, was near 1200, a n estimate thatfits the observedpopulation size of nectar@eding bats on the island. We suggest that the extensive removal of native vegetation occurring on Cura~aobe strictly regulated because further destruction of the cacti will result in a decrease and potential loss of the already l o u p~opulations of nectar-feeding bats. |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_14820355 |
| institution | Zenodo |
| language | |
| publishDate | 1996 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Survey of Columnar Cacti and Carrying Capacity for Nectar‐Feeding Bats on Curaçao Petit, Sophie Pors, Leon Biodiversity Mammalia Chiroptera Chordata Animalia bats bat (Uploaded by Plazi for the Bat Literature Project) We estimated the population sizes of the three species of columnar cacti that groul on the island of Cura~aousing ground and aerial transects, and we examined the island's carrying capacityfor tulo species of nectar@eding bats that depend on nectar from the flowers of these cacti. We calculated carrying capacity based on the daily availability of mature flowers between January and December 199.3 and the field energy requirements of bats as estimated from a n equationfor eutherian mammals (loul estimate) and oneforpasserine birds (high estimate) based on body mass. Additional energy requirements ofpregnancy and lactation were taken into account. We estimated that 461,172 columnar cacti were present on Cura~ao(38% Subpilocereus repandus, 51% Stenocereus griseus, and I I % Pilosocereus lanuginosus). May through September are the critical months when bats rely most heavily on cactusfor food. July 177-3 was a bottleneck u~iththe smallest number of maturefloulersper day.July and August were months of greatest energy demand becausefemales were lactating. We estimate that the carrying capacity for Glossophaga longirostris inJuly, u~henthe bat (Leptonycteris curasoae) population was 700, was near 1200, a n estimate thatfits the observedpopulation size of nectar@eding bats on the island. We suggest that the extensive removal of native vegetation occurring on Cura~aobe strictly regulated because further destruction of the cacti will result in a decrease and potential loss of the already l o u p~opulations of nectar-feeding bats. |
| title | Survey of Columnar Cacti and Carrying Capacity for Nectar‐Feeding Bats on Curaçao |
| topic | Biodiversity Mammalia Chiroptera Chordata Animalia bats bat |
| url | https://doi.org/10.5281/zenodo.14820355 |