Seabirds of Arrecife Alacranes, Mexico: Baseline Data Before Rodent Eradication and Oil Spill Effects
Arrecife Alacranes, the northernmost reef zone of the Gulf of Mexico, harbors the largest nesting seabird concentrations of the region (ca. 70,000 nests), and is a Mexican federal protected area. Some important threats to the area are oil extraction, introduced species (main cause of extinction in i...
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ftnsoutheastern:oai:nsuworks.nova.edu:occ_facpresentations-1309 2023-05-15T18:05:22+02:00 Seabirds of Arrecife Alacranes, Mexico: Baseline Data Before Rodent Eradication and Oil Spill Effects Velarde, Enriqueta Morales-Vera, Thor Keith, Edward O. Ruz-Rosado, Francisco Daniel de la Cueva, Horacio Gonzalez, Monica 2011-08-01T07:00:00Z https://nsuworks.nova.edu/occ_facpresentations/367 unknown NSUWorks https://nsuworks.nova.edu/occ_facpresentations/367 Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures Marine Biology Oceanography and Atmospheric Sciences and Meteorology conference 2011 ftnsoutheastern 2022-04-10T21:33:22Z Arrecife Alacranes, the northernmost reef zone of the Gulf of Mexico, harbors the largest nesting seabird concentrations of the region (ca. 70,000 nests), and is a Mexican federal protected area. Some important threats to the area are oil extraction, introduced species (main cause of extinction in islands), fisheries, and tourism. Black rats (Rattus rattus) and casuarina trees occur in Isla Perez, one of the reef’s islands, and a plan for the rodent eradication is under way. The last seabird census reported was done in 1986. In May and August 2009 we made surveys to monitor their present populations. Direct nest counts were carried out, with complementary counts on photographs. The total nests found per island were: Perez: 139,116 Sterna fuscata, 1,039 Anous stolidus; Muertos: 827 Sula dactylatra, 10 S.sula, 50 Fregata magnificens; Pájaros: 64 S.dactylatra; Chica: 22 S.dactylatra; Desterrada: 82 S.leucogaster. Our information revealed much larger numbers than those previously reported for S. fuscata, S. dactylatra, and S. sula, but less for F. magnificens. Protection of the area could be one factor to explain the increment in the seabird nesting numbers, and it will be interesting to see what changes occur after the rodent eradication is carried out, but also, effects of the BP oil spill may be detected. Conference Object Rattus rattus Nova Southeastern University: NSU Works Chica ENVELOPE(-57.050,-57.050,-63.350,-63.350) Perez ENVELOPE(-69.117,-69.117,-68.517,-68.517) |
institution |
Open Polar |
collection |
Nova Southeastern University: NSU Works |
op_collection_id |
ftnsoutheastern |
language |
unknown |
topic |
Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
spellingShingle |
Marine Biology Oceanography and Atmospheric Sciences and Meteorology Velarde, Enriqueta Morales-Vera, Thor Keith, Edward O. Ruz-Rosado, Francisco Daniel de la Cueva, Horacio Gonzalez, Monica Seabirds of Arrecife Alacranes, Mexico: Baseline Data Before Rodent Eradication and Oil Spill Effects |
topic_facet |
Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
description |
Arrecife Alacranes, the northernmost reef zone of the Gulf of Mexico, harbors the largest nesting seabird concentrations of the region (ca. 70,000 nests), and is a Mexican federal protected area. Some important threats to the area are oil extraction, introduced species (main cause of extinction in islands), fisheries, and tourism. Black rats (Rattus rattus) and casuarina trees occur in Isla Perez, one of the reef’s islands, and a plan for the rodent eradication is under way. The last seabird census reported was done in 1986. In May and August 2009 we made surveys to monitor their present populations. Direct nest counts were carried out, with complementary counts on photographs. The total nests found per island were: Perez: 139,116 Sterna fuscata, 1,039 Anous stolidus; Muertos: 827 Sula dactylatra, 10 S.sula, 50 Fregata magnificens; Pájaros: 64 S.dactylatra; Chica: 22 S.dactylatra; Desterrada: 82 S.leucogaster. Our information revealed much larger numbers than those previously reported for S. fuscata, S. dactylatra, and S. sula, but less for F. magnificens. Protection of the area could be one factor to explain the increment in the seabird nesting numbers, and it will be interesting to see what changes occur after the rodent eradication is carried out, but also, effects of the BP oil spill may be detected. |
format |
Conference Object |
author |
Velarde, Enriqueta Morales-Vera, Thor Keith, Edward O. Ruz-Rosado, Francisco Daniel de la Cueva, Horacio Gonzalez, Monica |
author_facet |
Velarde, Enriqueta Morales-Vera, Thor Keith, Edward O. Ruz-Rosado, Francisco Daniel de la Cueva, Horacio Gonzalez, Monica |
author_sort |
Velarde, Enriqueta |
title |
Seabirds of Arrecife Alacranes, Mexico: Baseline Data Before Rodent Eradication and Oil Spill Effects |
title_short |
Seabirds of Arrecife Alacranes, Mexico: Baseline Data Before Rodent Eradication and Oil Spill Effects |
title_full |
Seabirds of Arrecife Alacranes, Mexico: Baseline Data Before Rodent Eradication and Oil Spill Effects |
title_fullStr |
Seabirds of Arrecife Alacranes, Mexico: Baseline Data Before Rodent Eradication and Oil Spill Effects |
title_full_unstemmed |
Seabirds of Arrecife Alacranes, Mexico: Baseline Data Before Rodent Eradication and Oil Spill Effects |
title_sort |
seabirds of arrecife alacranes, mexico: baseline data before rodent eradication and oil spill effects |
publisher |
NSUWorks |
publishDate |
2011 |
url |
https://nsuworks.nova.edu/occ_facpresentations/367 |
long_lat |
ENVELOPE(-57.050,-57.050,-63.350,-63.350) ENVELOPE(-69.117,-69.117,-68.517,-68.517) |
geographic |
Chica Perez |
geographic_facet |
Chica Perez |
genre |
Rattus rattus |
genre_facet |
Rattus rattus |
op_source |
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures |
op_relation |
https://nsuworks.nova.edu/occ_facpresentations/367 |
_version_ |
1766176843153539072 |