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(Click for frequent words.) 70 temperate forests 70 ecoregion 67 biodiversity hotspots 67 diatom species 66 terrestrial ecosystems 65 seabird species 64 biodiversity hotspot 64 breeding seabirds 64 cetacean species 64 biogeographic 63 Tropical rainforests 63 migratory waterbirds 63 freshwater habitats 62 Antarctic krill 62 faunas 62 Seagrasses 62 freshwater fishes 62 Boreal forests 62 refugia 62 migratory bird species 62 sea turtle species 62 species 62 coniferous forest 61 animal phyla 61 biotopes 61 oceanic islands 61 wetland ecosystems 61 rocky intertidal 61 vesper bats 61 coniferous forests 61 avian species 61 taxa 61 invertebrate species 61 NWHI 61 vertebrate species 61 physiographic 61 invertebrate animals 61 carnivore species 61 biosphere reserves 61 montane 60 bryophytes 60 oligotrophic 60 benthos 60 mammal species 60 seagrass meadows 60 endemic species 60 floristic 60 Polar Regions 60 basaltic rocks 60 shrublands 60 waterbird populations 60 freshwater snails 60 endemism 60 coral reef ecosystems 60 mussel populations 60 waterbird species 60 spined stickleback 60 biogeochemical processes 59 Cape Floristic Region 59 terrestrial vertebrates 59 bottomland forests 59 reef fishes 59 mangrove ecosystems 59 Wadden Sea 59 coral ecosystems 59 elkhorn corals 59 biomes 59 coral species 59 pelagic fishes 59 upland habitats 59 coastal upwelling 59 reef habitats 59 floras 59 beech forests 59 intertidal mudflats 59 climatic variability 59 grizzly populations 59 marine biota 59 tidewater glaciers 59 mesic 59 spatial variability 59 Data Deficient 59 deciduous forests 59 headwater stream 59 common scoter 58 wintering habitat 58 bioregions 58 vertebrate fossils 58 Greater Yellowstone Ecosystem 58 Ramsar sites 58 faunal 58 biome 58 wintering waterfowl 58 biologically diverse regions 58 morphologically distinct 58 solar insolation 58 lowland forest 58 biogeographical 58 deepwater corals 58 temperate rainforest 58 riparian habitats 58 mammal extinctions 58 photosynthetic organisms 58 sulfide deposits 58 landmasses 58 reef corals 58 aquatic invertebrates 58 nearshore marine 58 lowland forests 58 supercontinent Pangaea 58 swamps marshes 58 upland forests 58 boreal regions 58 hoofed mammals 58 bird species 58 biota 57 sedimentary deposits 57 coccolithophores 57 subglacial lakes 57 humid tropics 57 freshwater ecosystems 57 boreal 57 algal species 57 seamounts 57 biodiverse ecosystems 57 Paleobiology Database 57 conifer forests 57 terrestrial mammals 57 blanket bog 57 carbon fluxes 57 subtidal 57 mangrove habitats 57 bays estuaries 57 seafloor sediments 57 intertidal 57 biocapacity 57 marine invertebrates 57 spruce fir pine 57 aquatic fauna 57 upland habitat 57 spatial scales 57 mammal fossils 57 ocean basins 57 wetlands woodlands 57 critically endangered endangered 57 biodiverse 57 migratory corridors 57 estuarine habitats 57 breeding waders 57 drylands 57 riparian forests 57 spectacled eider 57 temperate grasslands 57 unfished 57 bottomland hardwood forests 57 warbler species 57 climatic variations 56 deep convective clouds 56 birds amphibians reptiles 56 nitrogen deposition 56 glaciers retreated 56 northern pintails 56 tiger subspecies 56 avifauna 56 phylogeographic 56 freshwater wetland 56 subtropical regions 56 cyanobacterial blooms 56 brachiopods 56 geomorphological 56 coniferous trees 56 sagebrush steppe 56 river catchments 56 migrating flock 56 habitats 56 deltaic 56 mangroves coral reefs 56 seagrasses 56 phenotypic variation 56 amphibian declines 56 murrelets 56 molluscan 56 brook trout populations 56 temperate zones 56 seabird breeding 56 tropical savannah 56 Lophelia 56 Zooplankton 56 subalpine 56 landforms 56 Sinus Meridiani 56 semiarid regions 56 inter tidal 56 Prochlorococcus 56 km3 56 Critically Endangered species 56 Late Devonian 56 Near Threatened 56 Hine emerald dragonfly 56 Paleogene 56 mega deltas 56 Laramidia 56 metapopulation 56 ostracods 56 Amazonian forest 56 migratory flyway 56 foraminifera 56 grasshopper sparrow 55 underwater volcanos 55 freshwater estuaries 55 seafloor habitats 55 sedimentary basins 55 flatback turtle 55 Harmful algal blooms 55 grassland habitats 55 tropical latitudes 55 ecotypes 55 Loggerhead turtles 55 Mesozoic mammals 55 dwelling organisms 55 malaria vectors 55 grassland ecosystems 55 tropic regions 55 climatically suitable 55 Eld deer 55 willow flycatcher 55 C4 grasses 55 orangutan populations 55 microbial ecosystems 55 Peatlands 55 roseate terns 55 corals sponges 55 mass beachings 55 terranes 55 abyssal plains 55 shorebird species 55 lacustrine 55 mussel species 55 black legged kittiwakes 55 vertebrate animals 55 hypoxic zone 55 McMurdo Dry Valleys 55 abyssal plain 55 grasslands woodlands 55 biodiverse regions 55 montane forest 55 planktonic 55 Roadless areas 55 common murres 55 cetacean populations 55 submerged aquatic vegetation 55 Lesser Flamingo 55 subarctic regions 55 biologically diverse 55 estuarine waters 55 lesser scaup 55 northerly latitudes 55 mitochondrial genomes 55 predator prey interactions 55 temperate regions 55 ecosystems 55 neotropical migrants 55 oceanic whitetips 55 Toba eruption 55 coral habitats 55 angiosperm 55 conodonts 55 interannual variability 55 bryozoans 55 amphibian species 55 Magellanic Penguins 55 freshwater lakes 55 marine sediments 55 wintering birds 55 scalloped hammerhead shark 55 red throated loons 55 reproductively isolated 55 wolverine populations 55 Davidson Seamount 55 crustal thickness 55 Noctilucent clouds 55 phosphorus concentrations 55 Least Concern 54 loggerhead nesting 54 Phanerozoic 54 trawl fisheries 54 brent geese 54 forested watersheds 54 dry deciduous forests 54 gopher frogs 54 subarctic 54 wetlands flood plains 54 tropical coral reefs 54 southern latitudes 54 prairie pothole region 54 unlogged forests 54 coral reefs mangroves 54 aquatic invertebrate 54 clades 54 amphioxus 54 bony fishes 54 embayments 54 Ecoregion 54 tropical subtropical 54 estuarine ecosystems 54 geologies 54 cichlid fishes 54 tectonically active 54 subfamilies 54 flood basalts 54 waterbirds 54 felids 54 zooplankton species 54 dabbling ducks 54 grasslands wetlands 54 Serengeti ecosystem 54 Acropora 54 colonial waterbirds 54 Diatoms 54 Mangrove swamps 54 giant squid Architeuthis 54 cichlid species 54 quadrillion gallons 54 leatherback nesting 54 spatial heterogeneity 54 freshwater mussel 54 Pygmy hippos 54 interglacial periods 54 waterbird 54 vaquita porpoise 54 savanna elephants 54 rivers estuaries 54 Neotropical migrants 54 seacoasts 54 hematite mineral 54 wetland habitats 54 SSSIs 54 lobe finned fishes 54 equatorial rainforests 54 temperate latitudes 54 forested lands 54 wolverine habitat 54 mammalian predators 54 Succulent Karoo 54 arid semi arid 54 lowland tropical 54 marine phytoplankton 54 Canada Boreal Forest 54 Manx shearwaters 54 wetland ecosystem 54 phytoplankton biomass 54 midlatitude 54 genetic lineages 54 Arabia Terra 54 Pongo pygmaeus 54 migrating shorebirds 54 paleoenvironmental 54 eared grebes 54 hydric soils 54 coastal marine ecosystems 54 nutrient inputs 54 benthic foraminifera 54 fine grained sediment 54 arable farmland 54 equatorial forests 54 carbonate sediments 54 golden plover 54 bilaterians 54 juvenile salmonids 54 lowland rainforest 54 bottomland hardwood forest 54 amphibian populations 54 phyla 54 elevational 54 distinct lineages 54 malaria vector 54 paleoclimatic 54 unfrozen freshwater 54 black brant 54 seabird nesting 54 vesper sparrow 54 sunlike stars 54 microhabitats 54 Scotian Shelf 53 subalpine meadows 53 finless porpoises 53 Subarctic 53 Oligocene epoch 53 mammals 53 glacial landforms 53 forested wetlands 53 sediments deposited 53 reef ecosystems 53 atmospheric CO2 levels 53 auklets 53 pelagic fisheries 53 freshwater ponds 53 Shiretoko Peninsula 53 coral reef biodiversity 53 phenotypic characteristics 53 harlequin ducks 53 Appy Sluijs 53 pigeon guillemots 53 tiny single celled 53 river deltas 53 subpopulations 53 wetland vegetation 53 Proteobacteria 53 paleomagnetic 53 elkhorn 53 Miocene epoch 53 pelagic sharks 53 critically endangered tiger subspecies 53 Snake River sockeye 53 phylogenetically 53 Woodland caribou 53 interglacials 53 whitetip 53 sage grouse breeding 53 landmass 53 terrestrial biosphere 53 Homo sapiens evolved 53 woodrat 53 waterfowl nesting 53 chemosynthetic 53 cypress tupelo swamp 53 sooty shearwaters 53 peat lands 53 bottomland forest 53 El Nino Southern Oscillation 53 whitebark pines 53 geoparks 53 SST anomalies 53 flyways 53 Cenozoic Era 53 red necked phalaropes 53 Magicicada 53 eastern lowland gorilla 53 saltwater estuaries 53 stony coral 53 circumpolar Arctic 53 polar mesospheric clouds 53 boreal forests 53 aerosol concentrations 53 geohazard 53 Amundsen Sea 53 biotope 53 Late Paleozoic 53 purple sandpipers 53 reed bunting 53 forest ecosystems 53 methane CH4 53 killifish 53 endangered subspecies 53 grassland birds 53 Clouded leopards 53 hydrothermal vent 53 amphipods 53 subpolar 53 eastern meadowlarks 53 evolutionary lineages 53 baleen whale 53 Irrawaddy dolphins 53 cropland pasture 53 elkhorn coral 53 heritable traits 53 Horseshoe crabs 53 flatfishes 53 Last Glacial Maximum 53 rusty patched bumblebee 53 habitat fragmentation 53 eukaryote 53 migratory bird populations 53 nucleotide substitutions 53 Cottontails seek 53 mammalian species 53 lemur species 53 Blaire Van Valkenburgh 53 honeycreepers 53 foraging habitats 53 subregions 53 calderas 53 Seagull Intrusion 53 bottomland hardwood 53 northern fur seals 53 bumblebee species 53 Leatherback turtles 53 colonizations 53 desertified 53 shrubland 53 Prek Toal 53 seabird colonies 53 epithermal gold targets 53 shrub steppe habitat 53 beluga populations 53 Galapagos Archipelago 53 Freshwater mussels 53 salamander species 53 Warmer climates 53 lesser yellowlegs 53 cerulean warblers 53 glacial interglacial 53 polar oceans 53 mixed conifer forests 53 Eelgrass 53 Eastern Ghats 53 aboveground biomass 53 freshwater swamps 53 Ontario Lacus 53 upland sandpipers 53 temporal variability 53 salars 53 ungrazed 53 sengi 52 saline soils 52 sub tropic 52 ecologies 52 lush tropical rainforests 52 salmonid species 52 bonneted bat 52 Seamounts 52 native cutthroat trout 52 forams 52 strontium isotope 52 wintering mule deer 52 carnivorous mammals 52 koala populations 52 intertidal zone 52 riparian ecosystems 52 deglaciation 52 Plesiosaurs 52 single celled yeast 52 Late Cretaceous 52 chlorophyll concentrations 52 Oyster reefs 52 Hen harriers 52 Resident killer whales 52 glaciated 52 Bellingshausen Sea 52 Neogene 52 Corkscrew Swamp 52 semi arid regions 52 extinct mammals 52 biogeochemical cycles 52 Lake Okaro 52 infrared spectral 52 limestone karst 52 watersheds 52 microbialites 52 evaporite minerals 52 Coral bleaching 52 hydrological cycles 52 olivines 52 hominin fossils 52 riparian zones 52 biologically diverse ecosystems 52 passerines 52 continental rifting 52 Arctic charr 52 agro ecological zones 52 conterminous 52 Subduction zones 52 Lake Untersee 52 riparian forest 52 drainage basins 52 sulphide deposits 52 Yangtze basin 52 marine biodiversity 52 Snowy Plovers 52 Yellowstone ecosystem 52 coral reef fishes 52 Castorocauda 52 volcanic islands 52 Kimbe Bay 52 polynyas 52 cryosphere 52 palaeoclimate 52 Inuvialuit Settlement Region 52 Irrawaddy dolphin 52 Ganges Brahmaputra 52 intraplate 52 planktonic foraminifera 52 limestone outcrops 52 wintering bald eagles 52 temporal scales 52 estuarine crocodile 52 Amur leopards 52 reedbeds 52 Ediacara 52 horseshoe bats 52 phenotypic traits 52 corn buntings 52 comparative genomic analysis 52 Giant salvinia 52 Beaked whales 52 megafloods 52 fish amphibians reptiles 52 Bornean clouded leopard 52 tectonic plate boundaries 52 woodlands wetlands 52 biogeochemical 52 backboned animals 52 dunlin 52 river basins 52 humpback whales migrate 52 river drainages 52 Snowy owls 52 mammals reptiles birds 52 eutrophic 52 benthic 52 Arctic Coastal Plain 52 extinct volcanoes 52 Nihoa Island 52 pristine coral reef 52 Sphagnum 52 ecological niches 52 geomorphic 52 insectivores 52 trophic levels 52 Barn owls 52 chalk grassland 52 early successional habitat 52 Transient killer whales 52 placental mammals 52 leatherback nests 52 Cyanobacteria 52 staghorn corals 52 Balarat Project 52 isopods 52 mammalian carnivores 52 karst topography 52 atmospheric methane 52 Vernal pools 52 finfish aquaculture 52 phytoplankton blooms 52 primate species 52 unroaded 52 Transantarctic Mountains 52 tropical flora 52 Middle Eocene 52 montane forests 52 Areas IBAs 52 freshwater 52 tidal wetlands 52 riparian corridors 52 Forested 52 caribou herds 52 snub nosed monkeys 52 habitat 52 biomasses 52 seabird colony 52 enterotypes 52 invertebrates 52 freshwater crocodiles 52 seafloor sediment 52 hawksbill 52 ashy storm petrels 52 understorey 52 previously unstudied 52 nesting bald eagles 52 calcareous 52 Hellas Planitia 52 megadroughts 52 speleothems 52 alluvial plain 52 lowland heath 52 migrate seasonally 52 geological strata 52 sparse vegetation 52 hibernacula 52 functionally extinct 52 migratory pathway 52 crustaceans molluscs 52 surf scoters 52 roundtail chub 52 aquatic habitats 52 Diporeia 52 toothed whales 52 densest populations 52 magmatic sulphide 52 Baleen whales 52 bull kelp 52 aquatic ecosystems 52 Feral swine 52 magnetotactic bacteria 52 pheasant populations 52 mid latitudes 52 agro climatic zones 52 horned lizards 52 warm interglacial periods 52 Adélie penguins 52 freshwater lakes rivers 52 Biogeography 52 Late Triassic 51 transect 51 Gondwanan 51 tidal marshes 51 microbiomes 51 hawksbill turtles 51 freshwater aquifers 51 presettlement 51 Ozark Plateau 51 anthropogenically 51 terrestrial vertebrate 51 equatorial rainforest 51 black necked cranes 51 glacial cycles 51 altitudinal 51 fulmar 51 marine ecologists 51 migrant songbirds 51 aspen parkland 51 estuaries 51 Sr Ca 51 herbivorous fish 51 lactase persistence 51 Sticklebacks 51 Alexandrium fundyense 51 hyraxes 51 population densities 51 Kermadec Arc 51 volcanic ridges 51 marine ecosystems 51 basalts 51 Wet Tropics 51 structural lineaments 51 insect pollinators 51 predatory fishes 51 turtle nesting beaches 51 Cenozoic 51 Trumpeter swans 51 endophytic 51 marine biotoxins 51 marine habitats 51 peat swamp forest 51 lush forested 51 carcharias 51 muskoxen 51 early successional forest 51 subseafloor 51 Carden Alvar 51 angiosperms flowering plants 51 woodland habitats 51 sandbar sharks 51 red necked phalarope 51 Steller sea eagles 51 scrub shrub 51 Hydroelectric dams 51 transcriptomes 51 diatoms 51 unicellular organisms 51 northern gannets 51 ° C warmer 51 avian dinosaurs 51 geology hydrology 51 dense rainforests 51 protists 51 Phytophthora species 51 solitary sandpiper 51 Mata Atlantica 51 cinder cones 51 nonbreeding 51 Gangetic dolphins 51 glaciological 51 poleward shift 51 bogs swamps 51 coralline 51 spruce fir forests 51 coastal ecosystems 51 algal mats 51 nonmigratory 51 ocean sediment cores 51 Longleaf pines 51 mantle plumes 51 loggerhead turtle nests 51 wetland soils 51 Alexandrium 51 Aerial surveys 51 wolves roam 51 Phytoplankton 51 microscopic phytoplankton 51 freshwater impoundments 51 heathlands 51 teleconnections 51 coldwater streams 51 landform 51 megafauna 51 molting habitat 51 estuarine crocodiles 51 red crossbill 51 hardwood forests 51 Neoproterozoic 51 tropical savanna 51 demersal fish 51 Weddell seals 51 breeding colonies 51 turtles nesting 51 vernal pool species 51 loons grebes 51 False killer whales 51 western grebes 51 larval stages 51 grasshopper populations 51 stony corals 51 HABs 51 vegetations 51 photosynthetic microbes 51 metazoans 51 genetic loci 51 Caretta caretta 51 rookeries 51 vaquitas 51 overthrust belt 51 Olive Ridley sea turtles 51 extensive Paleozoic Selwyn 51 comb jellies 51 microenvironments 51 comb jelly 51 Laurentide ice sheet 51 Galapagos penguins 51 Darwin finches 51 geomorphology 51 heron colony 51 airborne radiometric anomalies 51 midlatitudes 51 northern goshawk 51 Longleaf pine 51 neotropical 51 Permian Triassic 51 seals walrus 51 staghorn coral 51 spotted flycatchers 51 phytoplankton populations 51 photic zone 51 dwelling invertebrates 51 fairy tern 51 southeastern Bering Sea 51 lungless salamander 51 sedge meadows 51 Panthera tigris sumatrae 51 dunlins 51 WMU 2D 51 subglacial lake 51 ncRNA 51 genebanks 51 morphological traits 51 tidewater glacier 51 glaciations 51 epiphytic 51 Brazil Pantanal 51 gravity anomalies 51 coral reef ecosystem 51 gorilla subspecies 51 reefs 51 oak hickory forest 51 hominoids 51 shallow continental shelf 51 natterjack toad 51 rhino buffalo 51 damselfish 51 mangrove vegetation 51 saltwater marshes 51 ungulate species 51 freshwater mussels 51 shortgrass prairie 51 Gakkel Ridge 51 footed albatross 51 Beluga sturgeon 51 benthic organisms 51 Kittlitz murrelet 51 chloride concentrations 51 eukaryotic genomes 51 deer densities 51 geophysically 51 ocean ridges 51 coral reef habitats 51 spatially explicit 51 species extinctions 51 monophyletic 51 morphologically 51 freshwater mussel species 51 Upper Miocene 51 phylogenies 51 hydrated electron 51 aquatic ecosystem 51 Microcystis 51 auks 51 Mesopotamian Marshlands 51 igneous rocks 51 spruce fir forest 51 polymorpha 51 westslope cutthroat trout 51 Ice Age mammals 51 diamondiferous kimberlite pipes 51 atmospheric oceanic 51 Javan Rhinos 51 northern pocket gopher 51 blackpoll warbler 51 seals sea lions 51 aspen stands 51 Syrtis Major 51 prairie grassland 51 wintering ducks 51 phenotypic differences 51 Martian meteorites 51 grizzly bears wolves 51 Homo antecessor 51 interannual 51 grassland habitat 51 Tule elk 51 contiguous tracts 51 eelgrass beds 51 degraded ecosystems 51 calcareous soils 51 oysters shrimp crabs 51 Yangtze finless porpoise 51 polar latitudes 51 alluvial deposits 51 ciliates 51 nesting bald eagle 51 Terre Adelie 51 whooper swans 51 gymnosperms 51 alpine glaciers 51 dromaeosaurs 51 spruce fir 51 Baringo giraffes 51 spookfish 51 Peninsular bighorn sheep 51 migratory species 51 ecotype 51 penguin species 51 Pleistocene Ice Age 51 shortfin mako 51 Dry Valleys 51 Marine Ecosystems 51 Cetomimidae 51 mammals amphibians 51 coastal lowlands 51 invertebrate populations 51 single celled microbes 51 Archaean 51 thermal inertia 51 Alligator gar 51 slender billed curlew 51 moist soils 51 Sperm whales 50 freshwater marsh 50 copepod 50 oceanic lithosphere 50 Hawaiian Archipelago 50 Deccan Traps 50 grassy savannah 50 horned larks 50 Cenozoic era 50 bathymetry 50 Qinghai Tibet plateau 50 Bachman sparrow 50 glaciers recede 50 called Abydosaurus mcintoshi 50 Sunda clouded leopard 50 Balearic shearwater 50 Birimian Greenstone Belt 50 nutrient loadings 50 shrub steppe 50 predator prey dynamics 50 karst formations 50 Ramsar wetlands 50 marine reptiles 50 Thresher sharks 50 glaciers 50 hominid fossils 50 alpine ecosystems 50 salmonids 50 oceanic circulation 50 Atlantic Flyway 50 bottomland hardwoods 50 upwellings 50 arid regions 50 great crested newt 50 spawning aggregations 50 roan antelope 50 brood rearing 50 freshwater invertebrates 50 caribou calving 50 populations 50 Sulu Sulawesi 50 Middle Awash 50 previously undescribed 50 coastal dune 50 herbivorous mammals 50 karsts 50 Kipunji 50 Snake River Plain 50 macroinvertebrates 50 primitive vertebrates 50 Periodical cicadas 50 boreal chickadee 50 bar tailed godwit