As comportas sempre foram muito importantes em Amesterdão. A cidade só se tornou habitável quando construíram uma barragem no rio Amstel para impedir a entrada da água salgada do IJ. Atualmente, Amesterdão tem cerca de 200 conjuntos de eclusas, na sua maioria feitas de madeira. Estão a tornar-se mais cruciais à medida que o...
Uma investigação recente indica que as plântulas nas florestas tropicais naturais têm taxas de sobrevivência mais elevadas em comparação com as áreas anteriormente sujeitas ao abate de árvores, apesar dos esforços dos projectos de recuperação de árvores. Este estudo é apresentado na revista Global Change Biology.Os investigadores monitorizaram mais de 5.000 plântulas durante dezoito...
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