Fundacion Keto

San José, Costa Rica

Fundacion Keto

San José, Costa Rica

Time filter

Source Type

Cros A.,Asia Pacific Program | Venegas-Li R.,Fundacion Keto | Teoh S.J.,WorldFish | Peterson N.,Asia Pacific Program | And 2 more authors.
Coastal Management | Year: 2014

The Coral Triangle is a global priority for conservation and since the creation of the Coral Triangle Initiative in 2007 it has been a major focus for a multi-lateral conservation partnership uniting the region's six governments. The Coral Triangle (CT) Atlas was developed to provide scientists and managers with the best available data on marine resources in the Coral Triangle. Endorsed as an official supporting tool to the Coral Triangle Initiative, the CT Atlas strives to provide the most accurate information possible to track the success of the conservation efforts of the Initiative. Focusing on marine protected areas and key marine habitats, the CT Atlas tested a process to assess the quality, reliability, and accuracy of different data layers. This article describes the mechanism used to evaluate these layers and to provide accurate data. Results of the preliminary quality control process showed errors in reputable datasets, outdated and missing data, metadata gaps, and a lack of user instructions to interpret layers. It highlighted the need to challenge existing datasets and demonstrated that regional efforts could improve the data available to evaluate the effectiveness of conservation measures. The Coral Triangle Atlas is continuously being updated to be as accurate as possible for reliable analysis. © 2014 Copyright Taylor and Francis Group, LLC.


Biogeographically, the Cano Island Biological Reserve (CIBR) is of strategic importance, since it is located in the center of the Panamic Province (Costa Rica and Panama), characterized by a peak in fish species richness within the Tropical Eastern Pacific (TEP). Despite its importance, fish community structure around the island has not been deeply studied, and coastal fish diversity records need to be updated. The aims of the study were: 1) to describe the community structure of the reef fish community of CIBR and 2) to update the list of the coastal fish species recorded until today. For the first objective, 50 stationary fish counts were conducted at 10 locations around Cano Island, in which 79 species, belonging to 32 families, were registered. The most abundant family was Pomacentridae, and the most abundant species was Chromis atrilobata. Planktivorous and carnivorous fish were the most abundant. The existence of a relationship between coral cover and the presence of herbivorous grazers was highlighted within the analysis. Additionally, species composition was compared by site and this revealed that "El Barco" has an abundant presence of snappers. For the second objective, published fish species records were collected for the CIBR and 35 new records were added, for a total of 212 coastal fish species, which represents approximately 17% of coastal fish diversity in the TEP. This work presents a baseline for fish monitoring and mangement measures in this marine protected area. © 2015, Universidad de Costa Rica. All rights reserved.


Martinez-Fernandez D.,Proyecto Consolidacion de Areas Marinas Protegidas de Costa Rica SINAC PNUD GEF | Montero-Cordero A.,Asociacion Costa Rica Por Siempre | Palacios-Alfaro D.,Fundacion Keto
Revista de Biologia Tropical | Year: 2014

The information on cetacean distribution in the North Pacific of Costa Rica lacks a conservation-oriented analysis. The aim of this study is to identify areas of importance for cetaceans, especially outside the of the existing protected areas. Previously published data on cetacean sightings between 2004 and 2008 were analyzed, and supplemented by survey effort during the dry season of 2012. A Kriging geo-statistical analysis was used to predict the spatial continuity of cetacean sightings within four study areas. The most important congregation areas for dolphins are: Bahía Santa Elena, Parque Nacional Marino Las Baulas and Reserva Natural Cabo Blanco, they have high densities of dolphin feeding groups. Relevant congregation areas for humpback whales are: Bahía Santa Elena, Playa Tambor, Golfo de Papagayo and Reserva Natural Cabo Blanco. We found areas of high cetacean concentration in the North Pacific, both inside and outside protected areas. Some of the non-protected areas should be prioritized for conservation: Bahía Santa Elena, Bahía Culebra and the surrounding areas of Punta Pargos and Reserva Natural Cabo Blanco. Rev. Biol. Trop. 62 (Suppl. 4): 99-108. Epub 2014 Diciembre 01. © 2014, Universidad de Costa Rica. All rights Reserved.


Corrales-Ugalde M.,Fundacion Keto | Corrales-Ugalde M.,University of Costa Rica | Sibaja-Cordero J.A.,University of Costa Rica
Revista de Biologia Tropical | Year: 2015

The diversity and species composition of the intertidal sandy beaches in the southern Pacific coast of Costa Rica were studied by means of cores collected along perpendicular transects to the beaches. The numbers of strictly marine species varied between 5 to 13 taxa, representing an intermediate value compared to those previously reported for these environments in Costa Rica. The isopod Cirolana salva-dorensis was the dominant species in the supralittoral zone, whereas polychaete worms belonging to the families Nereididae and Pisionidae dominated the low intertidal zone. Others organisms collected in the beaches were the crabs of the genus Uca, anomurans crabs (Emerita), sand dollars (Mellita longifissa) and several taxa of polychaete tubeworms, such as the Onuphidae, Spionidae, Magelonidae, and Glyceridae. The high faunal difference among the sites is possibly explained by their exposure to the wave energy, with fewer individuals in the more reflective beaches. In addition, human activities might also be responsible for the low infaunal diversity found in some of these beaches. This is the first effort to describe the benthonic fauna of beaches from this area. © 2015, Universidad de Costa Rica. All rights reserved.


The present work describes a geomorpholopic evaluation of the Burica peninsula, during 9 days in January 2008. Coastal geomorphology, erosion and depositional zones were evaluated between punta Banco and punta El Mangle. The most important morphologies found were structural origin morphologies, represented by active tectonic deformation, produced by the Panama Fracture Zone, and the subduction of the Cocos ridge. The structural origin morphologies identified were, structural-denudational zones which dominate the study area, homocline in the south of the peninsula and structural terraces, that are observed easily between punta El Mangle and La Peña, and in punta Banco. Other morphologies were identified, such as marine, fluvial and denudational morphologies. The marine-origin morphologies include the beach, subdivided in subareas, separated due to the waves dynamic, the cliffs, that dominate the area between La Peña river and punta Banco, and the shore platforms in the area between punta El Mangle and La Pena. The denudational morphology is represented by landslides, which area present mainly in the cliffs. In the other hand, the fluvial origin morphologies, include La Pena, Penita, Cana Blanca and Coco mouths and the floodplain of La Pena river. Intense erosional, slight to moderate erosional, sedimentational, and erosion and sedimentational zones were identified, having a great importance the coastal erosion, especially observed in the central and south of the peninsula. Considering the results and the interaction of them, the main hazards found are landslides, coastal erosion and the high seismicity of the area, which should be taken into account and studied in detail for a proper planning of the rural development. © 2015, Universidad de Costa Rica. All rights reserved.


Hernandez-Mora G.,Seccion Microbiologia Medico Veterinaria | Palacios-Alfaro J.D.,Fundacion Keto | Gonzalez-Barrientes R.,Fundacion Keto
OIE Revue Scientifique et Technique | Year: 2013

Neurobrucellosis and osteomyelitis are common pathologies of humans and cetaceans infected with Brucella ceti or B.pinnipedialis. Currently, 53 species of marine mammal are known to show seropositivity for brucellae, and B.ceti or B.pinnipedialis have been isolated or identified in polymerase chain reaction assays in 18 of these species. Brucellae have also been isolated from fish and identified in lungworm parasites of pinnipeds and cetaceans. Despite these circumstances, there are no local or global requirements for monitoring brucellosis in marine mammals handled for multiple purposes such as capture, therapy, rehabilitation, investigation, slaughter or consumption. Since brucellosis is a zoonosis and may be a source of infection to other animals, international standards for Brucella in potentially infected marine mammals are necessary.


Venegas-Li R.,University of Queensland | Palacios Alfaro J.D.,Fundacion Keto | Martinez Fernandez D.,Proyecto Consolidacion de Areas Marinas Protegidas de Costa Rica SINAC PNUD GEF
Revista de Biologia Tropical | Year: 2015

The southern Pacific coast of Costa Rica has been identified as an important place for the reproduction of four species of marine turtles. This presence, coupled with threats to the survival of the species, has encouraged the establishment of conservation initiatives and the study of these animals in the region, especially in nesting areas. Nonetheless, information on their presence in the water (where they spend most of their life) is scarce. For this reason, this study analyses data from a three years of a marine turtle monitoring program by Fundación Keto in the area between the Marino Ballena National Park and the Caño Island Biological Reserve, and presents the temporal and spatial distribution of the observed individuals. During this period, a total of 447 turtle (sightings per sampling effort=0.36 individuals-hr-1), of three different species were observed: Lepidochelys olivacea, Chelonia Mydas, and Eretmochelys imbricata. Sightings have been recorded during all months of the year, with L. olivacea as the species most commonly observed, especially outside of protected areas; this species presented a clear mating period in the months of July and August. E. imbricata was the species observed closer to the shore, and at a shallower site, possibly indicating an important foraging area for juvenile individuals. This is the first study to address the consistent and permanent presence of three species of marine turtles in the waters off the coast of Cantón de Osa in the southern Pacific coast of Costa Rica. © 2015, Universidad de Costa Rica. All rights reserved.


Montero-Cordero A.,Fundacion Keto | Lobo J.,University of Costa Rica
Journal of Cetacean Research and Management | Year: 2010

Despite the exponential increase in whalewatching activities in Costa Rica, little is known about its biological impact on resident coastal populations of dolphins in the country. Globally, this activity has brought economic benefits to the communities where it is practiced and in some cases, has played an important role in conservation of these mammals. However, when intensively practiced, this activity may significantly affect the animals, since its success depends on following cetaceans for extended periods of time. Thisstudy was conducted during the 2004-2005 and 2005-2006 dry seasons, to examine the biological factors associated with this activity in two areas where it is intensively practiced: Drake Bay and Caño Island. Three strip transects were followed within a high (vessel)traffic area. The pantropical spotted dolphin was studied through instant sampling, every two minutes. Sighting density of dolphins accompanied by tourist boats was greater within3km of the island compared to the average density in the whole study area. Dolphins reacted negatively to those boats that did not follow at least one of the rules of boat handling in the current existing national regulation for whalewatching guidelines. Furthermore,a logistic regression analysis showed that feeding and resting are less likely to occur in the presence of tourist boats. These two behaviours are extremely important and mishandled boats could cause the spotted dolphin to leave this area if these flaws continue. Dueto the lack of economic resources and staff from state institutions in Costa Rica, the reinforcement of the Whalewatching Executive Decree 32495 (2005) may be more efficientwith'bottom up' control, where community representatives control their own resources in conjunction with government oversight.


Montero-Cordero A.,Fundacion Keto | Fernandez D.M.,Fundacion Keto | Hernandez-Mora G.,Fundacion Keto
Check List | Year: 2010

This is the first record of Arctocephalus galapagoensis for the mainland coast of Costa Rica, which is outside the geographical distribution of this species about 1,300 km from its type locality. Changes in environmental conditions during El Niño events might be responsible for a higher incidence of these sightings. The presence of a moderate El Niño along the central and eastern equatorial Pacific Ocean during this month coincides with the occurrence of the fur seal in Costa Rican coasts. No photo record had ever been registered before for this country. © 2010 Check List and Authors.


Martinez-Fernandez D.,Fundacion Keto | Martinez-Fernandez D.,National University of Costa Rica | Montero-Cordero A.,Fundacion Keto | May-Collado L.,University of Costa Rica
Revista de Biologia Tropical | Year: 2011

Twenty nine cetacean species occur in Costa Rican waters but extensive research has been conducted only for three species. The latter shows there is a lack of general and local information about these mammals, even when the country, has shown a remarkable growth in whale watching activities. The increasing use of marine resources in coastal areas has also developed the need to determine the occurrence of cetaceans in areas showing high tourist presence, in order to propose sound conservation measures. In this study, environmental variables were determined and subsequently related to the presence of the species recorded, out of 166 sightings, between 2005 and 2006. The species with highest proportion of sightings were Stenella attenuata (68%), followed by Megaptera novaeangliae (13%) and Tursiops truncatus (10%). The presence of spotted dolphins is related to changes in salinity and water transparency, while that of the humpback whale was related to wave height (Beaufort scale) and water temperature. The presence of seven species of cetaceans was confirmed in two coastal areas of the Pacific coast of Costa Rica, from which three are present throughout the year. Environmental variables were found related to the presence of at least two species.

Loading Fundacion Keto collaborators
Loading Fundacion Keto collaborators