Results 31 to 40 of about 18,042 (210)
Report of the Inter-American Tropical Tuna Commission for the year 2008 [PDF]
ENGLISH: The Inter-American Tropical Tuna Commission (IATTC) operates under the authority and direction of a convention originally entered into by Costa Rica and the United States. The convention, which came into force in 1950, is open to adherence by
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Abstract Alaska's seascape supports globally significant seabird populations, including vulnerable and threatened species, and hosts economically important commercial fisheries and marine transportation corridors. Seasonal patterns of seabird movements and vessel traffic create a complex landscape of risk, defined as high levels of co‐occurrence ...
Kelly Kapsar +2 more
wiley +1 more source
Manuel Gilberto Samamé Linares
El 29 de febrero de 2004, falleció el Doctor Manuel Samamé. Profesor del Departamento Académico de Hidrobiología y Pesquería de nuestra Facultad. Obtuvo el grado de Doctor en Ciencias Biológicas en 1974, fue uno de los promotores de la creación del ...
Leonardo Romero
doaj +1 more source
Report of the Inter-American Tropical Tuna Commission for the year 1955 [PDF]
ENGLISH: This is the fifth year of investigations, by the Inter-American Tropical Tuna Commission, of the fisheries for tunas and tuna-bait fishes in the Eastern Pacific Ocean adjacent to the shores of the Americas.
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Abstract Spatial segregation in at‐sea distribution is frequently observed in seabirds and can have important implications for conservation and management. Globally, many albatross and petrel populations are declining due to bycatch in fisheries. In South Georgia, the decrease in wandering albatrosses (Diomedea exulans) differs among breeding sites ...
V. Warwick‐Evans +3 more
wiley +1 more source
La mayor cantidad de pesca en Costa Rica la realiza la flota artesanal con el 81,41% del total en el periodo 1990-2009. Muchas son las presiones que esta flota debe afrontar para desarrollar su actividad.
Mary-Luz Moreno-Díaz, Eric J. Alfaro
doaj +1 more source
Cryphiops caementarius es un camarón anfídromo nativo de relevancia ecológica y pesquera en cuencas hidrográficas del norte de Chile. Esta especie representa un componente importante de la identidad cultural de las comunidades de camaroneros que ...
Carlos Velásquez Gallardo +4 more
doaj +1 more source
Length-frequency estimation for yellowfin tuna (Thunnus albacares) caught by commercial fishing gear in the Eastern Pacific Ocean [PDF]
ENGLISH: Methods of collecting samples for the purpose of estimating the numbers and weights of fish caught, by length interval, are described. Several models for two-stage sampling are described, and the equations for the estimators and their variances ...
Calkins, Thomas P. +2 more
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Vulnerability of marine megafauna to global at‐sea anthropogenic threats
Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
Michelle VanCompernolle +309 more
wiley +1 more source
Estimation of the abundance of yellowfin tuna, Thunnus albacares, by age groups and regions within the Eastern Pacific Ocean [PDF]
ENGLISH: Monthly estimates of the abundance of yellowfin tuna by age groups and regions within the eastern Pacific Ocean during 1970-1988 are made, using purse-seine catch rates, length-frequency samples, and results from cohort analysis.
Deriso, Richard B., Punsly, Richard G.
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