Results 31 to 40 of about 14,932 (160)

Report of the Inter-American Tropical Tuna Commission for the year 2008 [PDF]

open access: yes, 2010
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

core  

Tudor England and Stewart Scotland Through Spanish Eyes: A Complete Transcription and Translation of Pedro de Ayala's Letter of 1498 to King Ferdinand of Castile and Queen Isabella of Aragon

open access: yesRenaissance Studies, EarlyView.
Abstract Pedro de Ayala served as a diplomat for King Ferdinand II of Aragon and Queen Isabella I of Castile at the courts of Henry VII, King of England, and James IV, King of Scots. In July 1498, he wrote a letter, partly in cipher, to report to his king and queen on such matters as Spain's interests in international diplomacy; the characters and ...
Adrian William Jaime   +2 more
wiley   +1 more source

Abundancia y talla de esponjas comerciales (Spongiidae) en el Golfo de Batabanó, Cuba

open access: yesRevista de Investigaciones Marinas, 2020
Las fluctuaciones de las capturas de esponja en Cuba evidencian disminuciones que obligan a mantener un enfoque precautorio y velar por el estricto cumplimiento de las medidas regulatorias.
Alexander Lopeztegui-Castillo   +2 more
doaj  

Evaluación del crecimiento del pejerrey Odontesthes bonariensis y su relacióncon la talla mínima de captura utilizada en las pesquerías

open access: yesRevista Peruana de Biología
El pejerrey Odontesthes bonariensis (Actinopterygii; Atherinopsidae) es un recurso pesquero relevante en varios países sudamericanos. En Argentina, su pesca permite la obtención de un importante volumen de proteína en numerosos ambientes acuáticos.
Miguel Mancini   +5 more
doaj   +1 more source

Report of the Inter-American Tropical Tuna Commission for the year 1952 [PDF]

open access: yes, 1953
ENGLISH: The Inter-American Tropical Tuna Commission, established by a Convention between the United States and Costa Rica, has as its purpose the collection and interpretation of information which will facilitate maintaining, at levels of maximum ...

core  

Nutrient and light availability control food webs and fish larvae in the Peruvian upwelling system

open access: yesLimnology and Oceanography, Volume 71, Issue 3, March 2026.
Abstract Upwelling ecosystems sustain some of the world's most productive fisheries by supplying deep‐water nutrients to the sunlit ocean surface. Yet, how spatiotemporal variability in nutrient‐upwelling and light availability regulates trophic transfer to fish remains poorly understood. We investigated these dynamics in a 36‐d mesocosm experiment off
Silvan Urs Goldenberg   +9 more
wiley   +1 more source

Variaciones fisicoquímicas del agua de una gran presa hidroeléctrica mexicana, región centro semiárida

open access: yesTecnología y ciencias del agua
La central hidroeléctrica Zimapán, construida en 1995, fue el primer proyecto en aprovechar las aguas residuales de la Ciudad de México para generar energía eléctrica.
Omar Rivera-Cervantes   +3 more
doaj   +1 more source

The food of the larvae of the northern anchovy Engraulis mordax [PDF]

open access: yes, 1959
ENGLISH: Hitherto the only investigation dealing with the food and feeding of the larvae of the northern anchovy, Engraulis mordax Girard, was that of Arthur (1956).
Berner, Jr., Leo
core  

Stomach flushing technique applied to quantify microplastics in Crocodilians

open access: yesMethodsX, 2019
The impact of microplastics on wildlife is a recent problem for which methods to evaluate exposure still need development. Being able to identify and quantify microplastics (particles < 5 mm) in the gastric contents of live crocodiles allows us to ...
Mauricio Gonzalez-Jauregui   +5 more
doaj   +1 more source

Latitudinal changes of euphausiid assemblages related to the morphological variability of the sound scattering layer along Baja California, October 1994

open access: yesScientia Marina, 1999
Latitudinal changes in the euphausiid assemblages were compared to the morphological structure (size and compactness) of the sound scattering layer (SSL) during ten 24-h surveys made in October 1994 along the west coast of Baja California, México. During
J. Gómez-Gutiérrez   +3 more
doaj   +1 more source

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