913 resultados para port waters


Relevância:

20.00% 20.00%

Publicador:

Resumo:

Estudia la distribución de las aves marinas en el norte del Perú.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Estudia la variabilidad de las aguas costerasen dos transectos cerca de los 8 y 10°S

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Estudio de muestras recolectadas con el BIONESS a varias profundidades en trece estaciones.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Ancien possesseur : Argenson, Antoine-René de Voyer (1722-1787 ; marquis de Paulmy d')

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Ancien possesseur : Argenson, Antoine-René de Voyer (1722-1787 ; marquis de Paulmy d')

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Ancien possesseur : Argenson, Antoine-René de Voyer (1722-1787 ; marquis de Paulmy d')

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Ancien possesseur : Argenson, Antoine-René de Voyer (1722-1787 ; marquis de Paulmy d')

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The distribution patterns of benthic algal assemblages in the Tinto, Odiel and Piedras rivers were analyzed during the winter of 2005 in 18 sampling stations. The main objective was to assess and compare the algal communities and parameters affecting them both in the zones affected by acid mine drainage (AMD) and in naturally alkaline waters. A total of 108 benthic diatom taxa and 31 non-diatom taxa were identi ed. Results showed large differences between algal communities in the two environments: Pinnularia acoricola, P. subcapitata and Eunotia exigua were the most frequent diatom taxa in regions affected by acid mine drainage, along with algae like Klebsormidium and Euglena mutabilis were the most relevant non-diatom taxa. In alkaline waters the dominant diatom taxa were Planothidium frequentissimum, Gomphonema angustum, Fragilaria capucina, and some species of Navicula (N. viridula, N. veneta or N. radiosa), accompanied by Oscillatoria and Anabaena as well as by streptophytes of the group of zygnemataceae and desmidiaceae

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Es descriu un aflorament volcànic localitzat a la rodalia del mas Ventós (el Port de la Selva), a la part central de la serra de Rodes, dins el Pirineu axial. Es tracta d’una xemeneia volcànica enclavada en granodiorites gneissificades. Els materials que la componen són basalts olivínics alcalins amb textura traquítica, bastant alterats, els quals queden colgats per un dipòsit col·luvial sense consolidar. Les dimensions de la xemeneia són difícils de determinar pel recobriment que presenta: supera els 70 m en direcció nord-nord-est a sud-sud-oest i és d’uns 35 m en la perpendicular a aquesta. Aquest aflorament va ser citat per Teixidor fa més d’ un segle, i no s’ha retrobat fins ara

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Here we describe a series of recognized morainic deposits in the "Macizo del Port del Comte", which are the southern-most example of the eastern pre Pyrenees