Jack Dykinga / Morning light with autumn coloured Cottonwoods (Populus sp) trees lining the river. Valley of the Gods, Colorado Plateau, of the Great Basin Desert, Utah, USA, November 2018.

Andres M. Dominguez / Hawthorn berries (Crataegus monogyna) in Poplar woodland (Populus) Sierra de Grazalema Natural Park, southern Spain. October.

Jack Dykinga / Lower Calf Creek Falls with Boxelders {Acer Negundo} and Cottonwoods {Populus fremontii) in the foreground, autumn colours, Grand Staircase - Escalante National Monument, Utah

Jack Dykinga / Morning light with autumn coloured Cottonwoods (Populus sp) trees lining the river. Valley of the Gods, Colorado Plateau, of the Great Basin Desert, Utah, USA, November 2018.

Jack Dykinga / Morning light with Cottonwoods trees in autumn the river with with sagebrush and rabbitbrush in the forground. Valley of the Gods, Colorado Plateau, Great Basin Desert, USA.

Jack Dykinga / Morning light with autumn colored Cottonwoods (Populus) trees lining the riverside with Sagebrush (Artemisia) and Rabbitbrush in the foreground. Valley of the Gods, Colorado Plateau, Great Basin Deser...

Jack Dykinga / Navajo Dome at dawn with autumn coloured Cottonwoods (Populus) lining the Fremont River Capitol Reef National Park, Utah, USA, October 2017.

Jack Dykinga / Quaking aspen (Populus tremuloides) in autumn colours with tree trunks behind, Dixie National Forest, Utah, October.

Jack Dykinga / Freemont cottonwood trees (Populus fremontii) in autumn, Capitol Reef National Park, Utah, America, October.

Jack Dykinga / Freemont cottonwood trees (Populus fremontii) along river, Capitol Reef National Park, Utah, USA, October 2016.

Andres M. Dominguez / Poplar trees (Populus sp) in autumn, Sierra de Grazalema Natural Park, southern Spain, October.

Loic Poidevin / Poplar tree (Populus) covered in Mistletoe (Viscum album) and surrounded by water of Lake Grandlieu in winter, West France