On how Cattle Egret (Bubulcus ibis) spread to the Americas: meteorological tools to assess probable colonization trajectories
The Cattle Egret (Bubulcus ibis) is native to the old world. Before 1877 no Cattle Egrets had been sighted in the Americas. There are no written records of this species being transported to or escaping from captivity in South America and there is enough evidence to suggest that individuals are capab...
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2014
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14321254_v58_n9_p1879_Massa http://hdl.handle.net/20.500.12110/paper_14321254_v58_n9_p1879_Massa |
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paper:paper_14321254_v58_n9_p1879_Massa2023-06-08T16:14:08Z On how Cattle Egret (Bubulcus ibis) spread to the Americas: meteorological tools to assess probable colonization trajectories Massa, Carolina Doyle, Moira Evelina animal atmosphere bird Central America computer simulation flying North America physiology population migration season South America statistical model wind Animal Migration Animals Atmosphere Birds Central America Computer Simulation Flight, Animal Models, Statistical North America Seasons South America Wind The Cattle Egret (Bubulcus ibis) is native to the old world. Before 1877 no Cattle Egrets had been sighted in the Americas. There are no written records of this species being transported to or escaping from captivity in South America and there is enough evidence to suggest that individuals are capable of making the crossing from Africa to the Americas unaided. Since long-distance movements of species are partly dependent on meteorological events we analyze the possibility of B. ibis crossing the Atlantic Ocean aided only by wind conditions evaluating existing theories and shedding light on their feasibility through the analysis of weather patterns and atmospheric circulation. Zonal and meridional wind components taken from the Twentieth Century Reanalysis Project were used to calculate trajectories between different points along the West African coast and South America between 1871 and 1920 in two seasons (March-April and September-October). From a total of 192,864 trajectories analyzed, 1,695 with origin in the west coast of Africa reached the NE coast of South America or the Caribbean islands in less than a week (successful trajectories). The probability of these successful trajectories originating in Central Africa was above 0.65 for the majority of the destinations analyzed. Particularly, in Guyana and Suriname where B. ibis was first sighted, the probability of the origin being Central Africa was 0.84, most of them occurring during March. Several weather events favored not only the colonization of the Cattle Egret but also its establishment and spread all throughout the Americas. Fil:Massa, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Doyle, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14321254_v58_n9_p1879_Massa http://hdl.handle.net/20.500.12110/paper_14321254_v58_n9_p1879_Massa |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
animal atmosphere bird Central America computer simulation flying North America physiology population migration season South America statistical model wind Animal Migration Animals Atmosphere Birds Central America Computer Simulation Flight, Animal Models, Statistical North America Seasons South America Wind |
| spellingShingle |
animal atmosphere bird Central America computer simulation flying North America physiology population migration season South America statistical model wind Animal Migration Animals Atmosphere Birds Central America Computer Simulation Flight, Animal Models, Statistical North America Seasons South America Wind Massa, Carolina Doyle, Moira Evelina On how Cattle Egret (Bubulcus ibis) spread to the Americas: meteorological tools to assess probable colonization trajectories |
| topic_facet |
animal atmosphere bird Central America computer simulation flying North America physiology population migration season South America statistical model wind Animal Migration Animals Atmosphere Birds Central America Computer Simulation Flight, Animal Models, Statistical North America Seasons South America Wind |
| description |
The Cattle Egret (Bubulcus ibis) is native to the old world. Before 1877 no Cattle Egrets had been sighted in the Americas. There are no written records of this species being transported to or escaping from captivity in South America and there is enough evidence to suggest that individuals are capable of making the crossing from Africa to the Americas unaided. Since long-distance movements of species are partly dependent on meteorological events we analyze the possibility of B. ibis crossing the Atlantic Ocean aided only by wind conditions evaluating existing theories and shedding light on their feasibility through the analysis of weather patterns and atmospheric circulation. Zonal and meridional wind components taken from the Twentieth Century Reanalysis Project were used to calculate trajectories between different points along the West African coast and South America between 1871 and 1920 in two seasons (March-April and September-October). From a total of 192,864 trajectories analyzed, 1,695 with origin in the west coast of Africa reached the NE coast of South America or the Caribbean islands in less than a week (successful trajectories). The probability of these successful trajectories originating in Central Africa was above 0.65 for the majority of the destinations analyzed. Particularly, in Guyana and Suriname where B. ibis was first sighted, the probability of the origin being Central Africa was 0.84, most of them occurring during March. Several weather events favored not only the colonization of the Cattle Egret but also its establishment and spread all throughout the Americas. |
| author |
Massa, Carolina Doyle, Moira Evelina |
| author_facet |
Massa, Carolina Doyle, Moira Evelina |
| author_sort |
Massa, Carolina |
| title |
On how Cattle Egret (Bubulcus ibis) spread to the Americas: meteorological tools to assess probable colonization trajectories |
| title_short |
On how Cattle Egret (Bubulcus ibis) spread to the Americas: meteorological tools to assess probable colonization trajectories |
| title_full |
On how Cattle Egret (Bubulcus ibis) spread to the Americas: meteorological tools to assess probable colonization trajectories |
| title_fullStr |
On how Cattle Egret (Bubulcus ibis) spread to the Americas: meteorological tools to assess probable colonization trajectories |
| title_full_unstemmed |
On how Cattle Egret (Bubulcus ibis) spread to the Americas: meteorological tools to assess probable colonization trajectories |
| title_sort |
on how cattle egret (bubulcus ibis) spread to the americas: meteorological tools to assess probable colonization trajectories |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14321254_v58_n9_p1879_Massa http://hdl.handle.net/20.500.12110/paper_14321254_v58_n9_p1879_Massa |
| work_keys_str_mv |
AT massacarolina onhowcattleegretbubulcusibisspreadtotheamericasmeteorologicaltoolstoassessprobablecolonizationtrajectories AT doylemoiraevelina onhowcattleegretbubulcusibisspreadtotheamericasmeteorologicaltoolstoassessprobablecolonizationtrajectories |
| _version_ |
1768542330957070336 |