Rose Summers / Eurasian beaver (Castor fiber) swimming over to a willow, it clambers on to a branch before beginning to feed on the surrounding leaves, Devon, England, UK.
Shane Gross / Red mangrove (Rhizophora mangle) propagules / plantlets which become fully mature plants before dropping off the parent tree to drift away and establish a new tree. Bahamas.
Shane Gross / Lemon shark juvenile (Negaprion brevirostris) swimming in mangrove habitat near blue crab (Callinectes sapidus), a prey species for the shark. Eleuthera, Bahamas.
Shane Gross / Lemon shark juvenile (Negaprion brevirostris) trying to feed on the leaves of a red mangrove (Rhizophora mangle). As pups, the sharks have to learn to hunt for themselves and sometimes make mistakes....
Shane Gross / Red mangrove (Rhizophora mangle) habitat with shoal of Silversides (Atherinomorus lacunosus), Eleuthera, Bahamas. August.
Erlend Haarberg / Wild pansy (Viola tricolor) with single Dandelion (Taraxacum sp) Innlandet, Norway, June.
Jack Dykinga / Rainbow over Long Canyon with fall coloured Cottonwood (Populus) trees against canyon walls, Burr Trail, Grand Staircase-Escalante National Monument, Utah, USA, October 2018.
John Shaw / Hybrid Poplar tree plantation in autumn (Populs sp.). Boardman Tree Farm, near Irrigon, Oregon, USA. October.
Juergen Freund / Timelapse of the tide rising at Cape Leveque, with Mangroves (Rhizophora) in the foreground, Kimberley, Western Australia, 2016
Juergen Freund / Timelapse of the tide rising in a Mangrove (Rhizophora) forest, Daintree, Wet Tropics World Heritage Area, North Queensland, Australia.
Juergen Freund / Timelapse of Periwinkle snails (Littoraria) climbing up Mangrove (Rhizophora) roots at lowtide, Daintree, Wet Tropics World Heritage Area, North Queensland, Australia.
Jack Dykinga / Fremont cottonwood trees (Populus fremontii) with autumnal leaves, Coyote Gulch,Grand Staircase-Escalante National Monument, Utah, USA.
Jack Dykinga / Cottonwood (Populus fremontii) trees in autumn at sunset, forming a sinuous line of yellow trees. Deer Creek Canyon, Grand Staircase-Escalante National Monument, Utah, USA, October.
Jack Dykinga / Fallen Quaking aspen (Populus tremuloides) leaves on wood, autumn, Dixie National Forest, Utah, USA, October.
Nick Upton / Female Eurasian beaver (Castor fiber) and five kits feeding on a Willow (Salix) sapling, River Otter, Devon, England, UK, July. Part of Devon Wildlife Trust's Devon Beaver Trial.
Andres M. Dominguez / Hawthorn berries (Crataegus monogyna) in Poplar woodland (Populus) Sierra de Grazalema Natural Park, southern Spain. October.
Andres M. Dominguez / Bacteria (Lepthotryx discophora) causing iridescent patterns and White willow tree leaf (Salix alba) in river, Sierra de Grazalema Natural Park, southern Spain, November.
Willem Kolvoort / Split level view of young mangrove shoots, Passe Grande Magnan / Magnan channel, Aldabra, Indian Ocean
Claudio Contreras / Aerial view of Red mangrove (Rhizophora mangle) coastal lagoon, Sian Ka'an Biosphere Reserve, Caribbean Sea, Mexico, January
Claudio Contreras / Red mangrove (Rhizophora mangle) in sinkhole, Casa Cenote, near Tulum, Yucatan Peninsula, Mexico, April
Philippe Clement / Long-spurred violet (Viola calcarata) in flower, Val Veny, Italian Alps, Italy, June
Sven Zacek / Misty lake, with trees reflected in the water, and Willow (Salix) trees silhouetted on the shore, Suur Emajogi river, Tartumaa, Estonia, May 2014.
Pascal Pittorino / Horned pansy (Viola cornuta) in botanic garden, Var, France, March.
Gabriel Rojo / Close up of Passionflower (Passiflora caerulea) La Pampa, Argentina.
Alex Hyde / Peacock butterfly (Inachis io) feeding on Goat Willow catkins (Salix caprea), an important food source for pollinators in early spring. Peak District National Park, UK. April.
Pascal Tordeux / Avenue of Poplar (Populus sp) trees in fog, Villers Le Sec, Aisne, Picardy, France, December.
Nick Upton / Eurasian beaver (Castor fiber) gnawing the trunk of a Willow tree (Salix sp.) in woodland enclosure at night. Devon Beaver Project, run by Devon Wildlife Trust, Devon, UK, April. Taken by a remote cam...
Jack Dykinga / Road winding through aspen trees (Populus tremuloides) in autumn, Dixie National Forest, Boulder Mountain, Utah. October 2013.
Jack Dykinga / Cottonwood (Populus fremontii) in autumn, Long Canyon, Grand Staircase-Escalante National Monument, Utah, USA. October 2013.
Alastair MacEwen / Time-lapse of flowers emerging on a male Willow (Salix) catkin, Somerset, England, UK, April.
Jabruson / Giant Bokoko / Mututtu tree (Klainedoxa gabonensis) near Lokoue Bai, Odzala-Kokoua National Park, Republic of Congo.
Daniel Heuclin / Giant Houp (Montrouziera cauliflora), New Caledonia, endemic.
Ammonite / Close-up of a Buff-tailed bumble bee (Bombus terrestris) feeding from Willow (Salix) catkins, before flying out of frame, France, March.
Ammonite / Mining bee (Andrena apicata) flying and feeding from Sallow (Salix caprea) catkins, with pollen sacs on hind legs, France, March.
Staffan Widstrand,Staffan Widstrand / Mangrove planting team from CRINEO planting Rhzophora mangrove trees, Pulicat Lake, Tamil Nadu, India, February 2013.
Staffan Widstrand / Mangrove planting team from CRINEO planting Mangrove trees (Rhizophora) Pulicat Lake, Tamil Nadu, India, February 2013.
Pascal Tordeux,Pascal Tordeux / Two rows of Poplar (Populus sp.) trees reflected in in flood water, during the floods of the River Oise, Picardy, France, January 2008
Theo Bosboom / Reed and Willows (Salix sp) with hoarfrost, Weerribben-Wieden National Park, the Netherlands, December 2007
Paul Harcourt Davies,Paul Harcourt Davies / Eugenia's Violet (Viola eugeniaea) in flower, blue form, Campo Imperatore, Gran Sasso, Appennines, Abruzzo, Italy, May 2010
Rolf Nussbaumer / RF- Sword-billed Hummingbird (Ensifera ensifera) female feeding from Passion flower (Passiflora mixta). Papallacta, Ecuador, Andes, South America. January. (This image may be licensed either as rights...
Jussi Murtosaari / Bay willow (Salix pentandra) fruit, small capsule containing numerous minute seeds embedded in white down aiding wind dispersal. Finland. November.
Nick Upton / Red poplar leaf beetle (Chrysomela populi) with parasitic mites (Linobia coccinellae) attached, crawling along Willow (Salix sp.) sapling , Kenfig National Nature Reserve, Glamorgan, Wales, UK, July.
Nick Upton / Red poplar leaf beetle (Chrysomela populi) feeding on a Willow (Salix sp.) sapling, Kenfig National Nature Reserve, Glamorgan, Wales, UK, July.
Nick Upton / Red poplar leaf beetle (Chrysomela populi) feeding on a Willow (Salix sp.) sapling growing in sand dunes, Kenfig National Nature Reserve, Glamorgan, Wales, UK, July.
Nick Upton / Ringlet butterfly (Aphantopus hyperantus) sunning itself on Willow (Salix sp.) leaf, Kenfig National Nature Reserve, Glamorgan, Wales, UK, July.
Robert Thompson / Passion flower (Passiflora caerulea) stamen detail, Banbridge, County Down, Northern Ireland. April.
Linda Pitkin / Sweet violet (Viola odorata) in flower, Surrey, England. March.