Results 51 to 60 of about 167,438,709 (174)
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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[Some features of ocean currents in Gulf of Nicoya, Costa Rica].
Revista de biologia tropical, 2007 The spatial and vertical structure of the water currents and its relationship with the tidal cycles were studied using current meters in the Gulf of Nicoya. In the upper gulf, the vertical marine current differences increase as the depth increases. The water column at the station near Chira Island (upper gulf) shows the smaller changes in currents and ...
Omar G, Lizano, Eric J, Alfaro
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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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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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[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, 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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Hidrocarburos de petróleo, disueltos y dispersos, en cuatro ambientes costeros de Costa Rica
Revista de Biología Tropical, 2004 Entre los años 2000 a 2002 se recolectaron y se analizaron 130 muestras de agua de mar en las costas de Costa Rica, para determinarles la concentración de hidrocarburos de petróleo disueltos y dispersos (HPDD), referida a equivalentes de criseno en ...
Jenaro Acuña-González +3 more
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Composition and abundance of ichthyoplankton in a Gulf of Nicoya mangrove estuary
, 2016 Se realizó muestreos mensuales de ictioplancton, en la superficie de tres sitios del Estero Punta Morales, Golfo de Nicoya, Costa Rica, de febrero a setiembre de 1985. Se recolectó alrededor de 51,000 huevos y 12,000 larvas de peces, principalmente de las familias Engraulidae, Gobiidae, Clupeidae, Sciaenidae, y Haemulidae, cuyas formas juveniles y ...
Ramírez C, Ana R +2 more
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Hydroacoustic estimation of fish biomass in the Gulf of Nicoya, Costa Rica
Revista de Biología Tropical, 2000 A stratified sampling design was used for a hydroacoustic survey of the inner parts of the Gulf of Nicoya in 1987 and 1988. The bottom topography of the inner Gulf was modeled by introducing the concept of a topographical basin model, as the basis for ...
John Hedgepeth +3 more
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