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696 record(s) found.
- COSEWIC Status Reports (696 record(s) found.)
COSEWIC Status Reports
COSEWIC status appraisal summary on the Hoary Mountain-mint Pycnanthemum incanum in Canada (2012)
This perennial plant has a historically small distribution in Canada, where it is known to occur in just two populations along the Hamilton bluffs in Ontario. Its highly specific habitat, which is limited to a small shoreline area of the bluffs, makes this species especially vulnerable. The main threats to its persistence are the encroachment of invasive species, the loss of habitat to erosion and fire suppression, which contributes to succession ...
COSEWIC Assessment and Status Report on the Atlantic Bluefin Tuna Thunnus thynnus in Canada (2011)
Atlantic Bluefin Tuna is a very large species (the all-tackle angling record is a 679 kg fish of 304 cm fork length taken off Aulds Cove, Nova Scotia in 1979), with a stout but efficiently streamlined, fusiform body that is a little compressed. There are two dorsal fins; the first is yellow or bluish while the second is reddish-brown. The head is conical with a pointed snout and a mouth that is terminal with the lower jaw slightly proje ...
COSEWIC Assessment and Status Report on the Atlantic Salmon Salmo salar in Canada (2011)
The Atlantic Salmon (Salmo salar) is a member of the family Salmonidae. This species has a fusiform body shape and matures at sizes ranging from 10 to 100+ cm. Atlantic Salmon exhibit plastic life histories and may have multiple reproductive and migratory phenotypes within a population, including freshwater resident and oceanic migrant forms. All phenotypes reproduce in fresh water. The oceanic migrant (anadromous) form is the best known phe ...
COSEWIC Assessment and Status Report on the Atlantic Whitefish Coregonus huntsmani in Canada (2011)
The Atlantic Whitefish (subfamily Coregoninae) has silvery sides, a white belly and a black, dark green or blue back. Wild fish in the existing population attain a maximum fork length of approximately 300 mm. The Atlantic Whitefish is morphologically and meristically differentiated from Lake Whitefish by its more terminal mouth, shorter pectoral fins, and greater lateral line scale (>90) and vertebrae (>64) counts. Mitochondrial D ...
COSEWIC Assessment and Status Report on the Barn Owl Tyto alba (Eastern population and Western population) in Canada (2011)
The Barn Owl (Tyto alba) is a medium-sized, long-legged owl with a distinctive, heart-shaped facial disk and dark eyes. Its upper body colour is variably rufous, golden or buff, lightly to heavily vermiculated with grey, and with tiny white and black spots. The lower body colour is white to buff, unspotted to heavily spotted with dark brown or rust. Flight feathers on the wings and tail have dark brown bars.
COSEWIC Assessment and Status Report on the Barn Swallow Hirundo rustica in Canada (2011)
The Barn Swallow is a medium-sized songbird that is easily recognized by its steely-blue upperparts, cinnamon underparts, chestnut throat and forehead, and by its deeply forked tail. Sexes have similar plumage, but males have longer outer tail-streamers than females and tend to be darker chestnut on their underparts.
COSEWIC Assessment and Status Report on the Barndoor Skate Dipturus laevis in Canada (2011)
Barndoor Skate is one of the largest skates in the western Atlantic, reaching a total length of 163 cm. Another common name is the sharpnose skate and, in French, it is called grande raie. It is distinguished from other skates by (collectively) having an acute snout, a relative absence of thorns, an upper surface that is generally brown with numerous dark spots, and an oval spot or eye in the centre of each pectoral fin (wing). The lower surface ...
COSEWIC Assessment and Status Report on the Batwing Vinyl Lichen Leptogium platynum in Canada (2011)
The Batwing Vinyl Lichen (Leptogium platynum) is a distinctive rock-dwelling “jellyskin” lichen characterized by leafy, medium-sized lobes and a dark bluish upper surface usually bearing numerous fruit bodies and occasional tiny lobules which function as vegetative propagules. It is unusual among cyanolichens in its almost invariable production of both sexual and vegetative propagules. It has its northern limits in southern coastal Br ...
COSEWIC Assessment and Status Report on the Blue Felt Lichen Degelia plumbea in Canada (2011)
The Blue Felt Lichen, Degelia plumbea is a large, blue-grey, leafy lichen that has longitudinal ridges and crescent-shaped curves which often give it a scallop-like shape. A prominent beard-like fungal mat (hypothallus) that is usually blue-black protrudes beyond the margin of the thallus, which may exceed 10 centimetres in diameter. Vegetative propagules are lacking. Sexual reproductive structures are usually present and numerous. The fruit bodi ...
COSEWIC Assessment and Status Report on the Butler’s Gartersnake Thamnophis butler in Canada (2011)
Butler’s Gartersnake (Thamnophis butleri) is a small, non-aggressive gartersnake with three distinct longitudinal yellow stripes on its dark brown back. This snake was first described in 1889 by E.D. Cope. Like most other small Canadian snakes, this species has been poorly studied. It is often confused with two other Thamnophis species coexisting in its range, the Eastern Gartersnake, T. sirtalis, and the Eastern Ribbonsnake, ...
COSEWIC Assessment and Status Report on the Cerulean Warbler Dendroica cerulea in Canada (2011)
The Cerulean Warbler (Dendroica cerulea) is a small (8-10g) wood-warbler.
COSEWIC Assessment and Update Status Report on the Cerulean Warbler in Canada (2011)
The Cerulean Warbler (Dendroica cerulea) is a small (8-10g) wood-warbler.
COSEWIC Assessment and Status Report on the Chestnut Lamprey Ichthyomyzon castaneus in Canada (2011)
The Chestnut Lamprey is a parasitic species that attains a maximum size of 363 mm in total length as an adult and 165 mm as a larva. It has a single indented dorsal fin. Larger larvae (greater than approximately 95 mm) can be distinguished from all other Canadian lampreys by the presence of darkly pigmented lateral line organs. Adults can be distinguished from the two other Canadian lamprey species that have a single dorsal fin, Silver Lamprey an ...
COSEWIC Assessment and Status Report on the Columbia Sculpin Cottus hubbsi in Canada (2011)
The Columbia Sculpin is a small, bottom-dwelling fish with a body shape that tapers from a relatively large head and pectoral fins to a narrow caudal (tail) fin area. The Columbia Sculpin reaches a maximum total length of about 110 millimeters. The Columbia Sculpin is distinguished from other co-occurring sculpins by a relatively long head, a complete lateral line, and striking broad, dark bars on the caudal fin, and oblique dark bars on the ...
COSEWIC Assessment and Status Report on the Crumpled Tarpaper Lichen Collema coniophilum in Canada (2011)
Crumpled Tarpaper Lichen, Collema coniophilum, is a distinctive, moderately sized leafy lichen with several broad, mostly rounded lobes, at most 2-4 (-5) mm wide. The smooth upper surface is dark olive green to blackish brown that becomes weakly and sparsely covered in low “blisters” that eventually expand upwards into low broad ridges. Small, blackish, finger-like protrusions are present on the upper surface, and contrast with the upper surface. ...
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