Related by context. Frequent words. (Click for all words.) 59 wetland ecosystems 58 freshwater habitats 57 wetland ecosystem 57 ecosystems 56 ecology 55 predator prey relationships 55 freshwater ecosystems 55 nesting habitats 55 conserve biodiversity 55 conserving biodiversity 54 delicate ecosystems 54 Coral reef 54 recharge groundwater 54 ecological 53 hydrologic cycle 53 biodiversity 53 migratory bird populations 53 coral ecosystems 53 forests grasslands 52 ecologies 52 Melting glaciers 52 aquatic ecosystem 52 aquatic habitats 52 river catchments 51 wildlife corridors 51 forest ecosystems 51 salinization 51 Soil erosion 51 wetland habitats 51 habitats 51 aquacultural 50 ecological degradation 50 fragile ecology 50 flora fauna 50 bio diversity 50 groundwater depletion 50 deltaic 50 freshwater 50 freshwaters 50 salination 50 Invasive plants 50 riversides 50 soil salinity 49 unplanned urbanization 49 conservation 49 riparian forest 49 reef ecosystems 49 biospheres 49 Forested 49 biodiversity hotspot 49 aquatic ecosystems 49 species extinctions 49 wintering habitat 49 prolonged droughts 48 temperate rainforest 48 decomposers 48 Coral bleaching 48 ecoregions 48 montane 48 nitrogen deposition 48 refugia 48 indigenous cultures 48 riparian zones 48 hydrological cycle 48 coastal ecosystems 48 Wadden Sea 48 fragile ecosystems 48 conserving 48 transboundary 48 native flora 48 terrestrial ecosystems 48 pristine rainforest 48 acidify 48 waterbird 47 combating desertification 47 coral reef ecosystem 47 toxic algal blooms 47 habitat fragmentation 47 Poyang Lake 47 Rapid urbanization 47 overharvested 47 resource depletion 47 temperate forests 47 aquatic habitat 47 driest inhabited continent 47 Sea otters 47 pristine coral reefs 47 streambanks 47 endemic species 47 lowland forests 47 lakeshores 47 marine ecosystems 46 biodiversity hotspots 46 biodiversity conservation 46 Warming temperatures 46 reedbeds 46 habitat 46 inland fisheries 46 deplete oxygen 46 pristine forests 46 wildlife habitats