Species Explorer

Browse and search species from the IUCN Red List and GBIF.

54,666 species

Wolf

CR

Canis lupus

Pop: Not assessed|Trend:

The wolf faces severe population declines due to extensive habitat fragmentation, human-wildlife conflict, and systematic persecution across much of its historical range. Livestock predation leads to retaliatory killings, while expanding human development continues to reduce and fragment suitable wilderness areas. Conservation status may vary by region or assessment authority, but multiple threats continue to impact wolf populations globally.

Wolf's-claw Clubmoss

EN

Lycopodium clavatum

Pop: Not assessed|Trend:

wonder coral

VU

Catalaphyllia jardinei

Pop: Not assessed|Trend:

Wood Ant

VU

Formica rufa

Pop: Not assessed|Trend:

Wood Bitter-vetch

EN

Vicia orobus

Pop: Not assessed|Trend:

Wood Bramble

EN

Rubus silvaticus

Pop: Not assessed|Trend:

Wood Dock

CR

Rumex sanguineus

Pop: Not assessed|Trend:

Wood Dock faces severe population declines due to habitat destruction from agricultural expansion and urban development, which eliminates the moist woodland edges and disturbed soils it requires. Invasive plant species competition and changes in land management practices that reduce suitable microhabitats further threaten remaining populations.

Wood Fingerwort

CR

Kurzia sylvatica

Pop: Not assessed|Trend:

Wood Fingerwort faces severe population declines due to widespread habitat destruction from deforestation and agricultural conversion of its specialized woodland environments. The species' limited dispersal ability and dependence on specific soil conditions make it particularly vulnerable to fragmentation, while climate change is altering the moisture and temperature regimes essential for its survival.

Wood Hedgehog

VU

Hydnum repandum

Pop: Not assessed|Trend:

Habitat fragmentation and intensive forestry practices threaten Wood Hedgehog populations by disrupting the mature forest ecosystems and mycorrhizal networks essential for their survival. Climate change and soil degradation further compound these pressures, affecting the delicate balance between the fungus and its host trees.

Wood Lark

VU

Lullula arborea

Pop: Not assessed|Trend:

Wood Sage Plume

EN

Capperia britanniodactylus

Pop: Not assessed|Trend:

Wood Sandpiper

EN

Tringa glareola

Pop: Not assessed|Trend:

Wood Sprite Gracile Mouse Opossum

EN

Gracilinanus dryas

Pop: Not assessed|Trend:

Wood Tiger Beetle

CR

Cicindela sylvatica

Pop: Not assessed|Trend:

The Wood Tiger Beetle faces severe population declines due to habitat loss and fragmentation of its specialized sandy woodland environments. Climate change and human development pressures have significantly reduced the availability of suitable open sandy areas within forest ecosystems that this species requires for survival.

Wood White

CR

Leptidea sinapis

Pop: Not assessed|Trend:

The Wood White faces severe population declines across its range due to habitat loss and fragmentation of its specialized woodland environments. Climate change and intensive land management practices have further reduced the availability of suitable breeding sites and larval host plants, pushing this delicate butterfly species toward extinction.

Wood-Boring Weevil

CR

Dryophthorus corticalis

Pop: Not assessed|Trend:

The Wood-Boring Weevil faces primary threats from habitat loss due to deforestation and forest fragmentation, which reduces the availability of mature forest ecosystems it requires. Intensive forest management practices that remove dead wood eliminate the specific microhabitats necessary for the species' survival and reproduction.

Woodland Grasshopper

EN

Omocestus rufipes

Pop: Not assessed|Trend:

Woodland Grayling

VU

Hipparchia fagi

Pop: Not assessed|Trend:

Woodland Horsetail

VU

Equisetum sylvaticum

Pop: Not assessed|Trend:

Woodlouse Spider [Dysdera erythrina]

EN

Dysdera erythrina

Pop: Not assessed|Trend:

Woodnymph

EN

Moneses uniflora

Pop: Not assessed|Trend:

Woodpecker Finch

VU

Camarhynchus pallidus

Pop: Not assessed|Trend:

Woods Valerian

VU

Valeriana dioica

Pop: Not assessed|Trend:

woods whitlow-grass

VU

Draba nemorosa

Pop: Not assessed|Trend:

Woodwaxen

CR

Genista tinctoria

Pop: Not assessed|Trend:

Woodwaxen faces severe population declines due to habitat loss from agricultural intensification and urban development, which has eliminated much of its traditional grassland habitat. The species is further threatened by changes in land management practices, particularly the cessation of traditional grazing and mowing regimes that maintained the open conditions it requires.

Woolly Feather-moss

CR

Tomentypnum nitens

Pop: Not assessed|Trend:

Woolly Feather-moss faces severe threats from habitat degradation and climate change impacts on its specialized wetland environments. The species is particularly vulnerable due to its dependence on specific hydrological conditions and water chemistry, which are increasingly disrupted by human activities and changing precipitation patterns.

Woolly Fringe-moss

CR

Racomitrium lanuginosum

Pop: Not assessed|Trend:

Woolly Fringe-moss faces severe threats from climate change, particularly warming temperatures and altered precipitation patterns that disrupt the cool, moist conditions essential for its survival. Air pollution, including nitrogen deposition and acid rain, significantly degrades the oligotrophic environments this species requires, while habitat fragmentation from human development isolates populations and reduces genetic diversity.

Woolly Rosette

EN

Cotylidia pannosa

Pop: Not assessed|Trend:

Woolly Thistle

EN

Onopordum acanthium

Pop: Not assessed|Trend:

Woolly Tooth

VU

Phellodon tomentosus

Pop: Not assessed|Trend:

Woolly Webcap

VU

Cortinarius laniger

Pop: Not assessed|Trend:

Woollywort

VU

Trichocolea tomentella

Pop: Not assessed|Trend:

Worcester Crest

EN

Dichomeris ustalella

Pop: Not assessed|Trend:

Wormwood Knot-horn

EN

Euzophera cinerosella

Pop: Not assessed|Trend:

woudkrabspin

VU

Xysticus luctuosus

Pop: Not assessed|Trend:

Woylie

CR

Bettongia penicillata

Pop: Not assessed|Trend:

The Woylie faces severe population declines primarily due to predation by introduced foxes and feral cats, which have devastated populations across much of their former range. Habitat fragmentation from agricultural clearing and urban development has further reduced available territory, while disease outbreaks have caused additional mortality in remaining populations.

Wrack-like Pondweed

CR

Potamogeton compressus

Pop: Not assessed|Trend:

Wrack-like Pondweed faces severe population declines due to widespread habitat destruction and degradation of freshwater ecosystems. Eutrophication from agricultural runoff and urban development has dramatically altered water chemistry in many of its remaining habitats, while drainage of wetlands for agriculture and development has eliminated numerous historical populations.

wrattige tandpastakorst

VU

Ochrolechia subviridis

Pop: Not assessed|Trend:

Wright's catkin mistletoe

VU

Antidaphne wrightii

Pop: Not assessed|Trend:

Wright's laurel canelon

VU

Ocotea wrightii

Pop: Not assessed|Trend:

Wrinkle-leaved Moss

CR

Rhytidium rugosum

Pop: Not assessed|Trend:

Wrinkle-leaved Moss faces severe threats from climate change, particularly warming temperatures and altered precipitation patterns that disrupt the cool, moist conditions essential for its survival. Habitat degradation from human activities, air pollution, and increased UV radiation due to ozone depletion further compromise this sensitive species' ability to persist in its specialized environments.

Wrinkle-seed Pygmyweed

CR

Crassula aquatica

Pop: Not assessed|Trend:

Wrinkle-seed Pygmyweed faces severe threats from habitat loss due to wetland drainage, agricultural conversion, and urban development of its specialized aquatic environments. Climate change and altered hydrological patterns further threaten the ephemeral pools and shallow water bodies this species depends upon for survival.

Wrinkled Peach

EN

Rhodotus palmatus

Pop: Not assessed|Trend:

Wrinkled slime star

VU

Pteraster militaris

Pop: Not assessed|Trend:

Wulf's Sphagnum

VU

Sphagnum wulfianum

Pop: Not assessed|Trend:

Wulstiger Lackporling

VU

Ganoderma adspersum

Pop: Not assessed|Trend:

Würfelsporiger Glöckling

VU

Entoloma rhombisporum

Pop: Not assessed|Trend:

Wurrup

VU

Lagorchestes hirsutus

Pop: Not assessed|Trend:

Wych Elm

CR

Ulmus glabra

Pop: Not assessed|Trend:

Wych Elm faces severe population declines primarily due to Dutch elm disease, a devastating fungal infection spread by elm bark beetles that has decimated elm populations across Europe and North America. Habitat fragmentation, climate change impacts, and limited genetic diversity in remaining populations further threaten the species' long-term survival.

xerophytic limestone moss

VU

Orthotrichum pellucidum

Pop: Not assessed|Trend:

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