Ingo Arndt / Aerial shot over a forest of Southern beech trees (Nothofagus) in autumn, Torres del Paine National Park, Patagonia, Chile, April, 2018.

Duncan Murrell / Silver beech / tawhai (Lophozonia menziesii) cloud forest on the Manuoha Track, Te Urewera National Park, North Island, New Zealand.

Duncan Murrell / Silver beech / tawhai (Lophozonia menziesii) cloud forest on the Manuoha Track, Te Urewera National Park, North Island, New Zealand.

Duncan Murrell / Red beech forest / Tawhairaunui (Nothofagus fusca),Te Urewera National Park, North Island, New Zealand.

Duncan Murrell / Silver beech / tawhai (Lophozonia / Nothofagus menziesii) cloud forest on the Manuoha Track, Te Urewera National Park, North Island, New Zealand.

Duncan Murrell / Red beech forest / Rawhairaunui (Nothofagus fusca),Te Urewera National Park, North Island, New Zealand.

Jack Dykinga / Autumnal Lenga trees (Nothofagus pumilio), on the flanks of Torres del Paine, with new snow from fast moving storm. Torres del Paine, Patagonia, Chile.

Andy Trowbridge / Silver beech (Lophozonia / Nothofagus menzeseii) in mist. Arawhata River, West Coast, South Island, New Zealand. January.

Andy Trowbridge / Silver beech (Lophozonia / Nothofagus menzeseii) in mist. Arawhata River, West Coast, South Island, New Zealand. January.

Floris van Breugel / Snow covered Lenga trees (Nothofagus pumilio) after large storm, El Chalten, Argentina, June 2014.

Jiri Lochman / Subtropical rainforest with Antarctic Beeches (Nothofagus moorei), Barrington Tops National Park, Gondwana Rainforest UNESCO World Hertiage Site, New South Wales, Australia.

Chris Mattison / Lenga (Nothofagus pumilio) Torres del Paine National Park, Chile.

Chris Mattison / Lenga (Nothofagus pumilio) Torres del Paine National Park, Chile.

Chris Mattison / Lenga (Nothofagus pumilio) Torres del Paine National Park, Patagonia, Chile, March.

Chris Mattison / Forest of burnt Lenga (Nothofagus pumilio) trees, Torres del Paine, Patagonia, Chile.

Chris Mattison / Southern beech forest (Nothofagus) surrounding river with waterfall, and mountains in the background. Torres del Paine National Park, Chile. March.

Chris Mattison / Lenga beech (Nothofagus pumilio) Torres del Paine National Park, Chile, March.

Chris Mattison / Lenga (Nothofagus pumilio) forest, Rio Serrano, Southern Chile

Chris Mattison / Lenga (Notofagus pumilio) forest, Rio Serrano, Southern Chile

Brent Stephenson / Adult female Yellowhead (Mohoua ochrocephala) peering out from the entrance to its nest in a beech (Nothofagus) tree. Haast Pass, West Coast, New Zealand, January. Endangered species.

Enrique Lopez-Tapia / Lenga beech forest (Nothofagus pumilio) Tierra del Fuego National Park. Argentina.

Enrique Lopez-Tapia / Tourists walking through footpath in Lenga beech forest (Nothofagus pumilio) Tierra del Fuego National Park. Argentina.

Colin Monteath / Magellanic Woodpecker (Campephilus magellanicus) male on Southern Beech (Nothofagus sp) tree, Los Glaciares National Park, Patagonia, Argentina

Tui De Roy / Magellanic Woodpecker (Campephilus magellanicus) male at nest entrance, in Southern Beech (Nothofagus sp), Tierra del Fuego National Park, Argentina

Tui De Roy / Magellanic Woodpecker (Campephilus magellanicus) male in Southern Beech (Nothofagus sp) forest, Tierra del Fuego National Park, Tierra del Fuego, Argentina

Tui De Roy / Magellanic Woodpecker (Campephilus magellanicus) male in Southern Beech (Nothofagus sp) forest, Tierra del Fuego National Park, Tierra del Fuego, Argentina

Tui De Roy / Magellanic Woodpecker (Campephilus magellanicus) female in Southern Beech (Nothofagus sp) forest, Ushuaia, Tierra del Fuego, Argentina

Tui De Roy / Magellanic Woodpecker (Campephilus magellanicus) male in Southern Beech (Nothofagus sp) forest, Tierra del Fuego National Park, Tierra del Fuego, Argentina

Tui De Roy / Fire-eyed Diucon (Xolmis pyrope) in Southern Beech (Nothofagus sp) forest, Ushuaia, Tierra del Fuego, Argentina

Tui De Roy / Austral Parakeet (Enicognathus ferrugineus) in Southern Beech (Nothofagus sp) forest, Ushuaia, Tierra del Fuego, Argentina

Tui De Roy / Austral Parakeet (Enicognathus ferrugineus) investigating potential nest cavity in Southern Beech (Nothofagus sp) forest, Ushuaia, Tierra del Fuego, Argentina

Tui De Roy / Austral Parakeet (Enicognathus ferrugineus) feeding in Southern Beech (Nothofagus sp) forest canopy, Ushuaia, Tierra del Fuego, Argentina

Tui De Roy / Austral Parakeet (Enicognathus ferrugineus) foraging in Southern Beech (Nothofagus sp) forest understory, Ushuaia, Tierra del Fuego, Argentina

Tui De Roy / Austral Parakeet (Enicognathus ferrugineus) courting pair in Southern Beech (Nothofagus sp) forest, Ushuaia, Tierra del Fuego, Argentina

Tui De Roy / Austral Parakeet (Enicognathus ferrugineus) feeding in Southern Beech (Nothofagus sp) forest canopy, Ushuaia, Tierra del Fuego, Argentina

Stephen Belcher / Silver Beech (Nothofagus menziesii) with Old Man's Beard (Clematis vitalba) growing on the branches, Fiordland National Park, New Zealand

Stephen Belcher / Southern Beech (Nothofagus sp) trees shaped by wind, Patagonia, Argentina

Kevin Schafer / Coihue Tree (Nothofagus dombeyi), Alerce Andino National Park, Chile

Theo Allofs / Southern Beech (Nothofagus sp) near Mount Fitzroy, Argentina

Thomas Marent / Tree Fern (Dicksonia sp) and Silver Beech (Nothofagus menziesii) growth in rainforest interior, Mount Aspiring National Park, New Zealand

Thomas Marent / Tree Fern (Dicksonia sp) and Silver Beech (Nothofagus menziesii) growth in rainforest interior, Mount Aspiring National Park, New Zealand

Colin Monteath / Antarctic Beech (Nothofagus moorei) trees in autumn with Cerro Torre towers behind, Los Glaciares National Park, Patagonia, Argentina

Colin Monteath / Antarctic Beech (Nothofagus moorei) trees in autumn with Cerro Torre towers behind, Los Glaciares National Park, Patagonia, Argentina

Michael & Patricia Fogden / Mountain-ash (Eucalyptus regnans) and Southern Beech (Nothofagus sp) in temperate rainforest, Yarra Ranges National Park, Victoria, Australia

Colin Monteath / Lenga Beech (Nothofagus pumilio) in fall colors and Cerro Torre, at 10,280 feet elevation, Los Glaciares National Park, Patagonia, Argentina

Michael & Patricia Fogden / Myrtle Beech (Nothofagus cunninghamii) temperate rainforest, Cradle Mountain, St Clair National Park, Tasmania, Australia

Colin Monteath / Lenga Beech (Nothofagus pumilio) trees, felled by an American Beaver (Castor canadensis) and used to build nest mound, southern Argentina

Colin Monteath / Lenga Beech (Nothofagus pumilio) trees and Mount Fitzroy in autumn, Los Glaciares National Park, Patagonia, Argentina

Michael & Patricia Fogden / Antarctic Beech (Nothofagus moorei) trees in temperate rainforest, Lamington National Park, Queensland, Australia

Michael & Patricia Fogden / Antarctic Beech (Nothofagus moorei) trees in temperate rainforest, Lamington National Park, Queensland, Australia

Michael & Patricia Fogden / Red Beech (Nothofagus fusca) temperate rainforest, Fjordland National Park, South Island, New Zealand

Michael & Patricia Fogden / Red Beech (Nothofagus fusca) temperate rainforest, Fjordland National Park, South Island, New Zealand

Colin Monteath / Lenga Beech (Nothofagus pumilio) ice-covered leaves, Torres del Paine National Park, Patagonia, Chile

Michael & Patricia Fogden / Mountain-ash (Eucalyptus regnans) and Southern Beech (Nothofagus sp) in temperate rainforest, Yarra Ranges National Park, Victoria, Australia

Michael & Patricia Fogden / Mountain-ash (Eucalyptus regnans) and Southern Beech (Nothofagus sp) in temperate rainforest, Yarra Ranges National Park, Victoria, Australia

Michael & Patricia Fogden / Mountain-ash (Eucalyptus regnans) and Southern Beech (Nothofagus sp) in temperate rainforest, Yarra Ranges National Park, Victoria, Australia

Konrad Wothe / Lush Red Beech (Nothofagus fusca) rainforest seen on Lake Gunn nature walk in Eglinton Valley, Fjordland National Park, South Island, New Zealand

Tui De Roy / Monkey Puzzle Tree (Araucaria araucana) group tower above Southern Beech trees (Nothofagus sp), Conguillio National Park, Chile

Tui De Roy / Southern Beech (Nothofagus sp) forest and Petit Moreno Glacier dropping into Lago Argentino, Los Glaciares National Park, Argentina

Tui De Roy / Monkey Puzzle Tree (Araucaria araucana) group tower above Southern Beech trees (Nothofagus sp), Conguillio National Park, Chile

Piotr Naskrecki / Southern Beech (Nothofagus sp) tree covered with moss, Tongariro National Park, New Zealand

Yva Momatiuk & John Eastcott / Myrtle Beech (Nothofagus cunninghamii) trees overgrown with mosses and epiphytes and Tree Ferns (Dicksonia antarctica) covering the forest floor, Otway National Park, Victoria, Australia

Bruce Thomson / Myrtle beech tree (Nothofagus cunninghamii) covered in moss in eastern Australian temperate rainforest, Border Ranges, Queensland, Australia.

Jack Dykinga / Magellan's beech tree (Nothofagus betuloides) clinging to the cliffs above El Salto Grande, where the glacial waters from Lago Nordenskjold pour into Lago Pehoe, Torres del Paine National Park, C...

Ugo Mellone / South Andean deer (Hippocamelus bisulcus), subadult male, walking through Southern beech (Nothofagus sp.) forest during snowfall. Los Glaciares National Park, Patagonia, Argentina. April.

Ugo Mellone / South Andean deer (Hippocamelus bisulcus), subadult male, feeding on Southern beech (Nothofagus sp.) leaves during snowfall. Los Glaciares National Park, Patagonia, Argentina. April.

Ugo Mellone / South Andean deer (Hippocamelus bisulcus), subadult male, standing under Southern beech (Nothofagus sp.) tree. Los Glaciares National Park, Patagonia, Argentina. April.

Ugo Mellone / South Andean deer (Hippocamelus bisulcus), subadult male, walking through Southern beech (Nothofagus sp.) forest during snowfall. Los Glaciares National Park, Patagonia, Argentina. April.

Ugo Mellone / Campsite in Southern beech (Nothofagus sp.) forest after snowfall. Los Glaciares National Park, Patagonia, Argentina. April.

Ugo Mellone / South Andean deer (Hippocamelus bisulcus), adult male, walking through Southern beech (Nothofagus sp.) forest. Patagonia National Park, Chile. March.

Ugo Mellone / South Andean deer (Hippocamelus bisulcus), adult male, walking through Southern beech (Nothofagus sp.) forest. Patagonia National Park, Chile. March.

Ugo Mellone / South Andean deer (Hippocamelus bisulcus), adult male, walking out of Southern beech (Nothofagus sp.) forest. Patagonia National Park, Chile. March.

Ugo Mellone / Landscape of Southern beech (Nothofagus sp.) forest in Tempano Fjord. Bernardo O'Higgins National Park, Patagonia, Chile. February.

Ugo Mellone / Landscape of Southern beech (Nothofagus sp.) forest in Tempano Fjord. Bernardo O'Higgins National Park, Patagonia, Chile. February.

Ugo Mellone / South Andean deer (Hippocamelus bisulcus) on edge of Southern beech (Nothofagus sp.) forest. Patagonia National Park, Chile. March.

Ugo Mellone / South Andean deer (Hippocamelus bisulcus) on edge of Southern beech (Nothofagus sp.) forest. Patagonia National Park, Chile. March.

Ugo Mellone / Landscape of Southern beech (Nothofagus sp.) forest with Andes in background. Patagonia National Park, Chile. March.

Bruce Thomson / Fungi (Nothofagus cunninghamii) on mossy base of tree in Antarctic Beech (Nothofagus moorei) Forest, remnant from Gondwanan supercontinent dating back to at least the Cambrian period, 505 Million Year...

Bruce Thomson / Mulitstemmed tree and roots covered in moss, Antarctic Beech (Nothofagus moorei) Forest, remnant from Gondwanan supercontinent dating back to at least the Cambrian period, 505 Million Years Before Pre...

Dave Watts / Myrtle beech (Nothofagus cunninghamii). Tasmania, Australia. January.

Tui De Roy / Austral thrush (Turdus falcklandii), in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Tui De Roy / Austral parakeet (Enicognathus ferrugineus), investigating potential nest cavity in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Tui De Roy / Austral parakeet (Enicognathus ferrugineus), investigating potential nest cavity in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Tui De Roy / Austral parakeet (Enicognathus ferrugineus), courting pair in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Tui De Roy / Austral parakeet (Enicognathus ferrugineus), courting pair in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Tui De Roy / Austral parakeet (Enicognathus ferrugineus), courting pair in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Tui De Roy / Austral parakeet (Enicognathus ferrugineus), feeding in southern beech (Nothofagus) forest canopy,, Beagle Channel, Patagonia, Argentina

Tui De Roy / Austral parakeet (Enicognathus ferrugineus), in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Tui De Roy / Magellanic woodpecker (Campephilus magellanicus) male feeding in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Tui De Roy / Magellanic woodpecker (Campephilus magellanicus) female feeding in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Tui De Roy / Magellanic woodpecker (Campephilus magellanicus) female feeding in southern beech (Nothofagus) forest, Beagle Channel, Patagonia, Argentina

Ashley Cooper / Deforestation of native Southern beech (Nothofagus sp) and Pine forest to clear land for cattle ranching. Between Puerto Natales and Seno Obstruccion, Magallanes, Chile. January 2020.

Ashley Cooper / Pasture land, formerly native Beech (Nothofagus sp) and Pine forest cleared for cattle ranching, remaining forest in background. Between Puerto Natales and Seno Obstruccion, Magallanes, Chile. January...

Ashley Cooper / Lichens hanging from branches in native Beech (Nothofagus sp) and Pine forest. Between Puerto Natales and Seno Obstruccion, Magallanes, Chile. January.

Ashley Cooper / Lichens hanging from branches in native Beech (Nothofagus sp) and Pine forest. Between Puerto Natales and Seno Obstruccion, Magallanes, Chile. January.

Ashley Cooper / Cattle in grassland, formerly a native Beech (Nothofagus sp) and Pine forest deforested to make way for ranching. Magallanes, Patagonia, Chile. January 2020.