aurora polar

aurora polar

Fenómeno luminoso que se produce de noite en latitudes máis elevadas que consiste na aparición de arcos, raios, cortinas, etc. de cor verdosa ou avermellada nas capas máis altas da atmosfera

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aurora

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polos/polar

Weather; General weather

The poles are the geographic point at 90 degrees latitude North and South on the earth's surface. They are equal distance from the equator. The polar region is considered to be ...

masa de aire polar

Weather; General weather

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ecosistema

Biology; Environment; Biodiversity

Comunidade autorreguladora de plantas e animais que interactúan entre eles e co medio natural no que viven. Estes ambientes poden ser, por exemplo, selvas, pantanos, cordilleiras, ...

conservación da biodiversidade

Biology; Environment; Biodiversity

Xestión que o ser humano fai dos recursos naturais para preserva-lo estado natural dos organismos, das especies e dos ecosistemas e así obte-lo máximo beneficio para a xeración ...

diversidade ecolóxica

Biology; Environment; Biodiversity

Variedade de ecosistemas que se dá nun medio natural que abrangue dende un bioma (a maior unidade ecolóxica) ata un microhábitat.

ocupación do solo

Biology; Environment; Biodiversity

Cuberta física do solo que pode estar formada pola vexetación. Uso humano que se lle dá á terra cun determinado propósito coma a agricultura de regadío ou a edificación do solo ...

modificación do hábitat

Biology; Environment; Biodiversity

Modificación das condicións ambientais locais nas que vive un organismo concreto. A modificación do hábitat pode producirse por causas naturais coma secas, enfermidades, lume, ...

especie invasora

Biology; Environment; Biodiversity

Animal, planta ou outro organismo que se introduce nun ecosistema alleo debido, normalmente, á intervención humana. O establecemento e o espallamento no novo ambiente modifica os ...

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