Results 21 to 30 of about 8,072 (159)

Najas marina subsp. marina

open access: yes, 2018
Najas marina L. subsp. marina Artbeschreibung: Blattscheiden +/- ganzrandig, selten mit 1 Zähnchen auf jeder Seite. Mittelnerv des Blattrückens kaum bestachelt. Blätter (des Blütenstands) meist 1-2 mm breit (zwischen den Zähnen gemessen). Reife Früchte 4-8 mm lang und 1,5-2 mm dick.
Konrad Lauber   +2 more
openaire   +1 more source

ESQUEMAS DE DISTRIBUCIÓN ESPACIAL EN LA COMUNIDAD BENTÓNICA DE ARRECIFES CORALINOS CONTINENTALES Y OCEÁNICOS DEL CARIBE COLOMBIANO

open access: yesRevista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2023
El Mar Caribe colombiano posee tanto arrecifes coralinos continentales costeros, como oceánicos. A partir de muestreos cuantitativos usando video-transectos de cadena, y análisis multivariados, se determinó que existen esquemas de variación espacial a ...
Guillermo Díaz-Pulido   +4 more
doaj   +1 more source

¿Estamos acabando con las especies marinas?

open access: yesEscuela Abierta, 2019
Este artículo es una reflexión detallada sobre una experiencia docente, en torno a un tema de tan vital actualidad, como es el de "las especies marinas y su extinción ".
Miguel L. Lopera García   +1 more
doaj   +2 more sources

Contemporary Problems of Nautical Tourism Development in Croatia

open access: yesPromet (Zagreb), 2005
The paper deals with the problems that have arisen due tothe rapid development of nautical tourism on the Croatiancoast. The fact is that Croatia, unlike other Mediten·aneantourist countries still does not control nautical tourism developmentin the sense
Srećko Favro, Nikola Glamuzina
doaj   +1 more source

Temporal changes in the water mass distribution and transports along the 20ºW CAIBOX section (NE Atlantic)

open access: yesCiencias Marinas, 2011
The CAIBOX cruise was conducted from 25 July to 14 August 2009. Three consecutive transects (zonal, meridional, and transverse) formed a closed box to the west of the Strait of Gibraltar.
LI Carracedo   +5 more
doaj   +1 more source

Improvements in a fast potentiometric seawater alkalinity determination

open access: yesCiencias Marinas, 2000
 In the present paper, we introduce some methodological improvements in a potentiometric technique for determining seawater alkalinity. This fast method (about two minutes per sample) uses open flasks and an ordinary titration system without ...
F F Pérez   +3 more
doaj   +1 more source

Fish larvae in Bahía Sebastián Vizcaíno and the adjacent oceanic region, Baja California, México [PDF]

open access: yesCheck List, 2007
The taxonomic composition of the fish larvae assemblage of Bahía Sebastián Vizcaíno and the adjacent oceanic region is presented based on oblique zooplankton hauls made during 12 oceanographic surveys between fall 1997 and fall 2000.
S. Patricia Jiménez-Rosenberg   +3 more
doaj   +3 more sources

Régimen de los puertos deportivos de competencia de euskadi

open access: yesRevista Vasca de Administración Pública, 2019
Marinas fall within the competence of the Autonomous Community of the Basque Country and therefore part of the objective scope of the recent Law 2/2018, of 28 June, on Ports and Maritime Transport of the Basque Country.
María Zambonino Pulito
doaj   +1 more source

Modeling artisanal coastal fisheries of Galicia (NW Spain) based on data obtained from fishers: the case of Octopus vulgaris

open access: yesScientia Marina, 2005
The small-scale common octopus (Octopus vulgaris) fishery in Galician waters (NW Spain) was studied using a model based on information obtained from fishers.
Jaime Otero   +4 more
doaj   +1 more source

Systematic list of marine fishes from Bahia Magdalena, Baja California Sur (Mexico)

open access: yesCiencias Marinas, 1994
Bahía Magdalena, Baja California Sur (Mexico), is an interesting place where, because of its geographic location and environmental characteristics, a high biodiversity is found.
J De-la-Cruz-Agüero   +4 more
doaj   +1 more source

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