Results 31 to 40 of about 548 (111)

Evaluación del estado de conservación del pepino de mar Isostichopus badionotus (Aspidochirotida: Stichopodidae) en la Isla de la Juventud, Cuba

open access: yesCiencia, Tecnología y Salud
La pesca de pepino de mar Isostichopus badionotus (Selenka, 1867) en la región de la Isla de la Juventud, Cuba comenzó en 2004. Actualmente esta zona de pesca, es de las pocas que se mantienen activas, por lo cual, actualizar el estado del recurso y ...
Aracely Hernández Betancourt   +2 more
doaj   +1 more source

¿La experiencia es la única forma de mejorar el discurso público en la ciencia?

open access: yesNova Scientia, 2015
Introducción: Cualquier practicante de ciencia está frecuentemente expuesto al discurso público (DP): conferencias, congresos, simposios, talleres, etc. Por ello, es imprescindible saber comunicar las ideas con claridad y contundencia en una presentación
Pablo del Monte-Luna   +2 more
doaj   +1 more source

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

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

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

A multiscale seasonal examination of the risk of harm to seabirds from vessels based on co‐occurrence in Alaskan waters

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
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

Deep-sea seamount fisheries: a review of global status and future prospects Pesquerías de aguas profundas realizadas en montes submarinos: revision global de su estado y perspectivas futuras

open access: yesLatin American Journal of Aquatic Research, 2009
Seamounts support a large number and wide diversity of fish species. A number of these spe-cies can form aggregations for spawning or feeding and are the target of large-scale trawl fisheries. Since the 1970s, seamounts throughout the worlds' oceans have
Malcolm R Clark
doaj  

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

Vulnerability of marine megafauna to global at‐sea anthropogenic threats

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
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

Reproductive cycle of Loxechinus albus (Echinodermata: Echinoidea) in two areas of the Magellan Region (53ºS, 70-72ºW), Chile

open access: yesScientia Marina, 1999
The reproductive cycle of the Chilean edible sea urchin, Loxechinus albus, was studied in two areas of the Magellan region, the Cockburn Channel (53°43´S, 70°42´W) and Dawson Island (53°43´S, 72°00´W). Eleven monthly samplings were carried out from April
Sylvia T. Oyarzún   +3 more
doaj   +1 more source

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