Results 31 to 40 of about 2,256 (177)

Un modelo biogeoquímico para el Golfo de Nicoya, Costa Rica

open access: yesRevista de Biología Tropical, 2004
De acuerdo con el "modelo de dos cajas de Broecker y Peng", se desarrolló un modelo de balance biogeoquímico del Golfo de Nicoya, considerando dos reservorios de nutrientes: aguas superficiales y aguas profundas. La zona de mezcla se ubicó en promedio a los 20 m de profundidad y se consideró que existe un balance entre las aguas superficiales que van ...
openaire   +7 more sources

PCB contamination in surface sediments in the coastal waters of Costa Rica

open access: yesRevista de Biología Tropical, 2004
This paper describes the initial investigation of PCB concentrations in four geographical regions (three on the Pacific and one in the Caribbean) of coastal Costa Rica: Bahia Culebra, Golfo Dulce, Golfo de Nicoya, and Limón.
Alison L Spongberg
doaj  

Planktonic primary production in a tidally influenced mangrove forest on the Pacific coast of Costa Rica. [PDF]

open access: yes, 2001
The seasonal variation of planktonic primary productivity was measured during one year in the main channel in the interior part of the mangrove forest of the Estero de Morales (Estero de Punta Morales), a mangrove system located in the Golfo de Nicoya ...
Cortes, J.   +2 more
core  

A study of the Eastern Pacific fishery for tuna baitfishes, with particular reference to the anchoveta (Cetengraulis mysticetus) [PDF]

open access: yes, 1957
ENGLISH: Most of the catches of yellowfin and skipjack tuna from the Eastern Pacific Ocean are made by vessels fishing with poles and lines and live bait.
Alverson, Franklin G., Shimada, Bell M.
core  

Development and field assessment of a quantitative PCR for the detection and enumeration of the noxious bloom-former Anabaena planktonica [PDF]

open access: yes, 2007
Anabaena planktonica is a harmful, bloom-forming freshwater cyanobacterium, which has arrived recently in New Zealand. In the short time since its incursion (
Cary, S. Craig   +2 more
core   +1 more source

Un método para evaluar el enriquecimiento de metales en sedimentos marinos en Costa Rica

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  

MODELANDO FLUJO UNIDIMENSIONAL NO ESTABLE EN CANALES DE ANCHO Y PROFUNDIDAD VARIABLE

open access: yesIngeniería, 2011
se introduce un modelo hidrodinámico no estable que reproduce flujos unidimensionales en canales cuyo ancho, profundidad y longitud puede variar.  El modelo es de uso en la predicción de inundaciones en ríos sujetos a cambios temporales drásticos como ...
Luis Manuel Murillo B
doaj   +1 more source

The Fisheries for Mangrove Cockles,Anadaraspp., from Mexico to Peru, With Descriptions of Their Habitats and Biology, the Fishermen’s Lives, and the Effects of Shrimp Farming [PDF]

open access: yes, 2001
This paper provides the first description of the mangrove cockle, Anadara spp., fisheries throughout their Latin American range along the Pacific coast from Mexico to Peru. Two species, A. tuberculosa and A.
MacKenzie, Jr., Clyde L.
core  

Parámetros poblacionales y hábitos alimenticios del pargo mancha (Lutjanus guttatus) en el Área Marina de Pesca Responsable Paquera-Tambor, golfo de Nicoya, Costa Rica

open access: yesUniciencia, 2018
El pargo mancha Lutjanus guttatus es una de las especies de peces de mayor importancia comercial capturada en el Golfo de Nicoya, que desde hace muchos años ha venido sufriendo una fuerte presión pesquera, principalmente, por la flota artesanal. De abril
Rosa Lidia Soto-Rojas   +2 more
doaj   +1 more source

Artificial fertilization of the eggs, and rearing and identification of the larvae of the anchoveta, Cetengraulis mysticetus [PDF]

open access: yes, 1962
ENGLISH: The anchoveta, Cetengraulis mysticetus (Günther), is an important bait fish used to capture tunas in the Eastern Tropical Pacific Ocean. Contributions to the early life history of this species in the Gulf of Panama were made by Simpson (1959 ...
Barrett, Izadore   +2 more
core  

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