Abstract: 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 estab - lishment of conservatio

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Abstract: Phytoplankton prima - ry production (PP) was determined in a broad sector of the Térraba-Sierpe National Wetland, Costa Rica, from September to November 2008 in the rainy season and from January to March 2009 in the dry season. Six sam - pling stations were

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Abstract: The Térraba-Sierpe Reserve has the largest mangrove in Costa Rica but has suffered from changes in sea level. I used published data to analyze the area and found that sea level rise, generated by coast subsidence or global warming, created a new p

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Abstract: This research describes the floristic composition and spatial distribution of the main mangroves species and other associated flora present in the estuarine sector of Térraba-Sierpe National Wetland, Costa Rican Pacific. Field survey consists of 1 127 point

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Abstract: The present study shows spatial patterns in the faunal assemblage of decaying wood and sediments, with emphasis on the polychaetes. The survey was executed across a salinity gradient in a tropical mangrove estuary of Costa Rica. To capture the organisms we

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Resumen: The analysis of salinity data collected during three campaigns of monitoring (2002-2004, 2005-2008 and 2011-2012) in the estuarine sector of Térraba Sierpe National Wetlands (HNTS) was performed. The information collected allows to separate a northern zone wi

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Abstract: Biogeographically, the Caño Island Biological Reserve (CIBR) is of strategic impor - tance, 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 Pacifi

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Abstract: The nesting of the Olive Ridley ( Lepidochelys olivacea ) sea turtle was studied from 2006 to 2012 in Drake Bay, Costa Rica, an important solitary nesting site and center of eco-tourism in the Osa Peninsula. During this period, 958 nests were recorded (mean

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Abstract: From September 2005 to November 2007 we studied the meteorological typologies and the physical, chemical and zooplankton oceanography of Golfo Dulce, a unique aquatic ecosystem in the South Pacific of Costa Rica. The water circulation pattern in Golfo Dulce

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Abstract: Oceanographic vari - ables at 33 stations distributed in Golfo Dulce, Costa Rica, during the dry and rainy seasons between 2009 and 2010, were analyzed with CTD profiles, where salinity, temperature, sigma-T and currents were studied in the water column. Se

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Abstract: ce May 2010 until May 2011 biological and fishery information regarding 67 artisanal fishing operations were collected in different areas of Golfo Dulce. A total of 30 (44.8%) onboard operations and 37 (55.2%) landings were observed. During onboard operati

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Abstract: this study reports the structural characteristics and distribution of species in the mangrove forests of Playa Blanca, Escondido and Rincón de Osa in Golfo Dulce, South Pacific of Costa Rica. Multiple lineal transects were carried out at each of the mangrov

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Abstract: The study was conducted from February 2011 to January 2012, in the mangrove forest of Tortuga Estuary. A total of six parcels, each measuring 9m 2 , were established in the area, to evaluate the survival and growth rates of the mangrove seedlings. By the en

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Abstract: Costa Rica is considered one of the 20 most biodiverse countries in the world, which includes it ́s well known reefs ecosystems. Specifically, the South Pacific region, the Osa Conservation Area (ACOSA), holds one of the richest reefs of the country. Even

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Abstract: Within the months of January-February 2010 and July-August 2011, 55 daily sighting surveys were conducted in Golfo Dulce, a tropical fiord-like embayment in the South Pacific region of Costa Rica. The research objective was to collect baseline data on sever

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Abstract: 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

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Abstract: e density, population, length, yield and sex proportion of the Anadara tuberculosa Sowerby (1833) were studied in the mangroves of Golfito and Playa Blanca, Golfo Dulce, Costa Rica from 2008-2010. A. tuberculosa was more abundant in Golfito mangroves (

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Abstract: he zooplanktivorous whale shark (Rhincodon typus), is the largest liv - ing chondrichthyan and a cosmopolitan species, living in tropical, warm and temperate waters. It is considered vulnerable by the International Union for Conservation of Nature (IUCN),

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Abstract: Incidental catch of S. lewini by artisanal fishermen in Golfo Dulce, Costa Rica, suggest that this could be one of the coastal locations used by the species. This study aims to characterize the scalloped hammerhead shark population in Golfo Dulce, in ord

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Abstract: From May 2010 until May 2011, the longtail stingrays ( Dasytis longa ), caught by artisanal fishermen in Golfo Dulce, south Pacific of Costa Rica, were analyzed. We observed a total of 30 artisanal fishing operations in different areas of Golfo Dulce, with

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Abstract: Rocky reefs maintain a high diversity of organisms. Differences in fish community could be expected by seasonal events and wave action on rocky reefs. I studied “La Viuda” rocky islet, Golfo Dulce, CostA Rica (8°37’33” N - 83°14’08” W) with Bohnsack and Ba

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Abstract: Olive Ridley sea turtle ( Lepidochelys olivacea) have been amply studied on Costa Rican beaches that experience mass nestings, “arribadas”, both in their nesting behavior and other aspects of their biology; however, very little published information exists

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Abstract: Limited quantitative information is available for hawksbill turtles ( Eretmochelys imbricata ) at foraging grounds in the Eastern Tropical Pacific (ETP), where the species composes one of the most endangered marine turtle populations on the planet. Between

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Abstract: The Golfo Dulce is one of the few tropical fjords in the world, and has recently been declared a Marine Area for Responsible Fisheries (AMPR), harboring mangrove ecosystems, coral reefs and seagrass beds, which are important feeding areas for green turtles

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Abstract: n sea turtles, nest-site selection plays a key role in the survival of the offspring, with a direct influence on the sex of the hatchlings, incubation period, embryonic mortality, and hatchling size. Nest-site choice has been studied for most sea turtle spe

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Abstract: Sea turtle nesting activity was monitored in Punta Banco, South Pacific Costa Rica uninterruptedly for sixteen years, accompanied by conservation activities such as nest relocation in hatcheries. Hatching success evaluations were held for “in situ” and relo

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Abstract: olfo Dulce is a fiord-lilke embayment located in the southern Pacific of Costa Rica, this coastal-marine ecosystem harbors an important wealth in marine biodiversity, including cetaceans. In this study we describe the cetacean commu - nity of Golfo Dulce, i

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Abstract: 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 fou

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