Results 41 to 50 of about 210 (158)
Cuadernos de investigación UNED, 2016 Due to the importance of primary production in the trophic network, most aquatic ecosystems rely on microalgae. However, there are fewer studies on phytoplankton in the Central American region, specifically on marine diatoms, in part because it is ...
Karen Rodríguez-Núñez +2 more
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Revista Ciencias Marinas y Costeras, 2011 En el ámbito nivel mundial, el tiburón martillo (Sphyrna lewini) es una de las especies más afectadas por la sobrepesca y el aleteo. Recientemente se incorporó a la Lista Roja de la UICN como especie en peligro de extinción. El presente estudio pretendió
Ilena Zanella +2 more
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[Variation of thermohaline properties in the Nicoya Gulf, Costa Rica].
Revista de biologia tropical, 2005 The time-space behavior of thermohaline properties of the water masses in the Gulf of Nicoya, a tropical estuary in the Costa Rican Pacific coast, was studied by sampling monthly from April 1992 to April 1993. The saline field has a seasonal maximum during April, a month before the maximum temperature is observed.
C L, Brenes, S, Léon, J, Chaves
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Revista de Biología Tropical, 2006 Se determinaron aspectos reproductivos y alimentarios del tiburón enano Mustelus dorsalis, a partir de 311 ejemplares capturados con línea y anzuelo en el Golfo de Nicoya, Costa Rica, durante marzo de 1999 y mayo de 2000. Se reconocieron 250 hembras y 61
José Rodrigo Rojas M
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Metales traza en sedimentos costeros de Costa Rica
Revista de Biología Tropical, 2004 Se determinó la concentración de hierro, plomo, cobre y zinc, en sedimentos de cuatro ecosistemas costeros de Costa Rica, por espectroscopia de absorción atómica, con llama o con horno de grafito.
Jairo García-Céspedes +2 more
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Ciencias Marinas, 2011 Hormone-induced spawning of the spotted rose snapper Lutjanus guttatus was studied using wild and cage-grown fish. Carp pituitary suspension (CPS) and human chorionic gonadotropin (hCG) were assessed.
J Boza-Abarca +4 more
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Revista de Biología Tropical, 2011 The availability of data sets covering more than a year is scarce for tropical environments. Advances in hardware and software speed-up the re-analysis of old data sets and facilitates the identification of hidden data patterns.
José A Vargas-Zamora +1 more
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Revista de Biología Tropical, 2007 in the Gulf of Nicoya on the Pacific Coast of Costa Rica, nutrient rich equatorial subsurface water (ESW) is upwelled in much of the lower gulf. These offshore waters are often regarded as the major source of nutrients to the gulf.
Jaime Palter +2 more
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[The phytoplankton community of Punta Morales, Nicoya Gulf, Costa Rica ].
Revista de biologia tropical, 2005 Three daily samplings of the phytoplankton community were made at two consecutive days in March, April, May, September, October, November and December 1997, at Punta Morales, Golfo de Nicoya, Costa Rica. Samples were collected during each tide at depths of 50% and 10% of light penetration using a Niskin bottle.
E, Brugnoli Olivera, A, Morales Ramirez
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Revista de Biología Tropical, 2009 Una de las pesquerías más importantes en el Golfo de Nicoya es la del pargo mancha (Lutjanus guttatus); su captura se realiza con diversas artes y principalmente por la flota artesanal.
Rosa L Soto Rojas +3 more
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