The Canadian Field-Naturalist (E-Journal)
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"Applied Panarchy: Applications and Diffusion across Disciplines" edited by Lance H. Gunderson, Craig R. Allen, and Ahjond Garmestani. 2022. [book review]
Full text link"Empire of Ants: the Hidden Worlds and Extraordinary Lives of Earth’s Tiny Conquerors" by Susanne Foitzik and Olaf Fritsche, translated by Ayça Türkoğlu, 2021 [book review]
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"Field Study: Meditations on a Year at the Herbarium" by Helen Humphreys, 2021. [book review]
No full textCases of freeze-dried freshwater turtles at the northern limit of their ranges in southern Ontario
Full text linkTurtles in northern latitudes are at the limit of their ranges and display various strategies for surviving the winter, including moving under the ice and out of water. Anthropogenic disturbances are often at the root of local habitat changes that can cause turtles to move from underwater refugia onto land, sometimes resulting in freezing and death. Turtles may also leave the water under natural freeze–thaw cycles, with early exits potentially maladaptive and lethal. We document cases of freshwater turtles freezing out of water at all life stages. We give a brief description of the circumstances surrounding the discovery of freeze-dried carcasses and highlight some of the climatic challenges facing overwintering turtles in southern Ontario
Malocclusion in an Arctic Wolf (Canis lupus arctos) from northeast Greenland
Full text linkI document the first case of malocclusion in an Arctic Wolf (Canis lupus arctos) from Greenland. All canine teeth of a wolf found dead on the tundra of northeast Greenland showed evidence of heavy anterior wear resulting from occlusion with the opposite teeth. Additional heavy wear on the incisors indicated a level bite. No cases of malocclusion were found in the largest museum collection of Arctic Wolf skulls (n = 11) from Greenland. However, the collection consisted exclusively of specimens from a northeast Greenland wolf population extirpated ca. 1939; thus, it provided no information on the incidence of malocclusion in more contemporary wolves. A finding of malocclusion in the more recent wolf population could be important because the condition is genetically based and the trait is expressed more frequently with increased inbreeding. The small, geographically isolated wolf population that this wolf was a part of disappeared for reasons unknown after 2002 and genetic conditions cannot be excluded as a contributing factor. Future study of the prevalence and severity of this abnormality in Arctic Wolves from Greenland will be problematic because of the difficulty of acquiring comparative material, but could be conducted on other populations of Arctic Wolves
A fossil beech fern (cf. Phegopteris (C. Presl) Fée) from Driftwood Canyon Provincial Park, British Columbia
Full text linkFerns are important components of the biodiversity of wet forests across Canada, and the fossil record offers insights into the origins of fern diversity and biogeography. In 1967, Driftwood Canyon Provincial Park in north-central British Columbia was declared an Eocene Epoch plant, insect, fish, bird, and mammal fossil site of national scientific significance to preserve the Driftwood Creek fossil beds. The fossil plants from this important fossil site remain largely unknown. Here, a first record of a beech fern from the Eocene of British Columbia—morphologically comparable to the Phegopteris connectilis group—is illustrated, further revealing the past biodiversity of ancient British Columbia. The absence of sori and other key anatomical characters prevents definitive identification. Today, the circumpolar to temperate species Northern Beech Fern (Phegopteris connectilis) is widespread across British Columbia, occurring in wet coniferous forests; other members of the P. connectilis group also occur in temperate climates
"The Greatest Polar Expedition of All Time: the Arctic Mission to the Epicenter of Climate Change" by Markus Rex, translated by Sarah Pybus, 2022. [book review]
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