Ecology 35 Ecosystems & Habitats 35 Environmental Science (see also Chemistry Environmental) 35 Life Sciences NATURE 35 SCIENCE 35 Wilderness 35 Écologie 8 Ökologie 7 Biotic communities 5 Mathematical models 5 Recherche 4 Research 4 Statistical methods 4 Stream ecology 4 Biocénoses 3 Biologie des populations 3 Ecosystem management 3 Evolution (Biology) 3 Écosystèmes 3 Gestion 3 Ökosystem 3 Population Dynamics 3 Population biology 3 Analyse multivariée 2 Analytical methods 2 Aquatic ecology 2 Aquatic habitats 2 Biodiversität 2