Results 51 to 60 of about 3,269 (164)

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open access: yes
European Journal of Neurology, Volume 32, Issue S1, June 2025.
wiley   +2 more sources

Documenting Decadal Spatial Changes in Seagrass and Acropora palmata Cover by Aerial Photography Analysis in Vieques, Puerto Rico: 1937-2000 [PDF]

open access: yes, 2006
Aerial photographs from 1937–2000 of Bahía Salina del Sur on vieques, Puerto Rico were analyzed to detect and describe spatial changes in the areal cover of sea-grass beds in Bahía Salina del Sur.
Hernandez-Cruz, Luz Raquel   +2 more
core   +1 more source

Panama Canal Twenty-fifth anniversary 1914 - Aug. 15 -1939 [PDF]

open access: yes, 1928
Leonard Carpenter Panama Canal Collection. Photographs: Views of Panama and the Canal. [Box 1] from the Special Collections & Area Studies Department, George A. Smathers Libraries, University of Florida.
Hardy, Rufus
core  

Revista de Vertebrados de la Estación Biológica de Doñaña [PDF]

open access: yes, 1989
Alimentación de la boga del Guadiana (Chondrostoma polylepis wi/lkommi, Stein. 1866) en la interfase río-embalse de Sierra Boyera (Córdoba. España)Predación del búho real (Bubo bubo) sobre la perdiz roja (Alectoris rufa): selección de edad y ...
Alegre, Joaquín   +32 more
core   +1 more source

Contributions to the Geology and Paleontology of the Canal Zone, Panama, and geologically related areas in central America and the West Indies. Part 11: The biologic character and geologic correlations of the sedimentary formations of Panama in their relation to the geologic history of Central America and the West Indies [PDF]

open access: yes, 1919
The paper presents: 1) biologic summaries for each of the formations for which paleontologic data are available, with brief discussions of the geologic age; 2) geologic correlations of the formations and the distribution of their age-equivalents in ...
Vaughn, Thomas Wayland
core  

Un método para evaluar el enriquecimiento de metales en sedimentos marinos en Costa Rica A method to evaluate metal enrichment in marine sediments

open access: yesRevista de Biología Tropical, 2012
Se propone un método para evaluar enriquecimiento de metales en sedimentos de Bahía Culebra y en el Golfo de Nicoya de Costa Rica a través de la normalización de los elementos y el aluminio usando la regresión lineal de las concentraciones de los ...
Omar G. Lizano   +2 more
doaj  

Patterns of cetacean sighting distribution in the Pacific Exclusive Economic Zone of Costa Rica based on data collected from 1979-2001 [PDF]

open access: yes, 2005
Nineteen species of cetaceans (families Balaenopteridae, Kogiidae, Physeteridae, Ziphiidae and Delphinidae) occur in the Costa Rican Pacific Exclusive Economic Zone (EEZ).
Calambokidis, John   +4 more
core   +1 more source

Long-term comparison of the fish community in a Costa Rican rocky shore marine reserve

open access: yesRevista de Biología Tropical, 2011
Despite their role in supporting diverse marine fish communities, tropical rocky shores and reefs have attracted less research and fewer targeted conservation efforts compared to coral reefs.
Mark C Myers   +2 more
doaj   +2 more sources

Late human occupation in the surroundings of Culebra Bay: Analysis based on new dates of 14C for some ceramic types in the Southern Sector of Greater Nicoya

open access: yes, 2022
In the last 25 years, numerous archaeological investigations carried out in the surroundings of Culebra Bay, located in the Southern Sector of Greater Nicoya, have achieved a significant amount of 14C dating that have complemented the chronological estimates assigned to the sites through the ceramics. In light of the radiometric data, it is possible to
openaire   +1 more source

Status of Coral Reefs in the US Caribbean and Gulf of Mexico: Florida, Texas, Puerto Rico, US Virgin Islands and Navassa [PDF]

open access: yes, 2002
The following report on the status of US Caribbean coral reef ecosystems has been summarised from more extensive reports submitted to the US Coral Reef Task Force (USCRTF) working group that implemented in 2000 ‘A National Program to Assess, Inventory ...
Causey, Billy   +11 more
core   +1 more source

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