Donald C Thomas
Biographic Data
| ID | 8549195 |
|---|---|
| NAME | Donald C Thomas |
| GIVEN NAMES | Donald C |
| FAMILY NAME | Thomas |
| SIGNATURE | THOMAS D C |
| AFFILIATIONS | Université du Québec à Montréal |
| VERIFIED | No |
| TOTAL WORKS | 6 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 6 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1971 |
| LATEST PUBLICATION YEAR | 2009 |
| H-INDEX | 0 |
Caribou and the North
In Vitro Digestibilities of Plants Utilized by Barren-Ground Caribou
Rumen fluids of barren-ground caribou (Rangifer tarandus groenlandicus) were used with standard in vitro procedures in March 1981 to investigate the relative digestibilities of forages collected on caribou winter ranges in the southern Northwest Territories. In vitro dry matter disappearance (IVDMD) of the three most abundant arboreal lichens, when fermented in test tubes for 60 h, averaged 67% compared with 43% for the seven most common terricol…
Digestibility of Plants in Ruminal Fluids of Barren-Ground Caribou
The comparative digestibilities of plants and their rates of digestion in vitro were assessed by fermentation with ruminal fluids obtained from barren-ground caribou (Rangifer tarandus groenlandicus) shot on their winter range in the southern Northwest Territories. There was a near-linear increase in the in vitro, dry-matter disappearance (IVDMD) with fermentation time (30-120 h) for all eight lichen species that we tested. In contrast, IVDMD was…
The Bailey Point Region and Other Muskox Refugia in the Canadian Arctic
The muskox ( Ovibos moschatus ) is widely distributed over much of arctic Canada but only at a few locations do their densities remain high and populations relatively stable. These refugia constitute the most favourable muskox ranges in the Canadian Arctic Archipelago .... Refugia for muskoxen in the High Arctic include lowlands on eastern Axel Heiberg Island in the Mokka Fiord region, the lowlands of northeastern Devon Island, and the Bailey Poi…
In Vitro Digestibilities of Plants in Rumen Fluids of Peary Caribou
In vitro fermentation with expressed rumen fluids was used to evaluate the apparent comparative digestibilities of plants ingested by Peary caribou (Rangifer tarandus pearyi) in arctic Canada. The apparent digestibilities of vascular plant components collected in summer and fermented for 60 hours with "summer" rumen inoculum generally were in the range 50-80%, digestibilities of lichens ranged from 18-85%, and those of mosses from 11-35%. In simi…
Distribution and Abundance of Muskoxen North of Great Bear Lake
Heavy exploitation until about 1910-11, so drastically reduced muskoxen populations that they were thought to be extinct, or nearly so, north of Great Bear Lake. Following a few earlier sightings, they have been seen with increasing frequency since 1953. They now occupy, with one major exception, the areas where they were known to have been plentiful, and their population is estimated to be at least 425 animals
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Distribution and Abundance of Muskoxen North of Great Bear Lake
Heavy exploitation until about 1910-11, so drastically reduced muskoxen populations that they were thought to be extinct, or nearly so, north of Great Bear Lake. Following a few earlier sightings, they have been seen with increasing frequency since 1953. They now occupy, with one major exception, the areas where they were known to have been plentiful, and their population is estimated to be at least 425 animals
In Vitro Digestibilities of Plants in Rumen Fluids of Peary Caribou
In vitro fermentation with expressed rumen fluids was used to evaluate the apparent comparative digestibilities of plants ingested by Peary caribou (Rangifer tarandus pearyi) in arctic Canada. The apparent digestibilities of vascular plant components collected in summer and fermented for 60 hours with "summer" rumen inoculum generally were in the range 50-80%, digestibilities of lichens ranged from 18-85%, and those of mosses from 11-35%. In simi…
Digestibility of Plants in Ruminal Fluids of Barren-Ground Caribou
The comparative digestibilities of plants and their rates of digestion in vitro were assessed by fermentation with ruminal fluids obtained from barren-ground caribou (Rangifer tarandus groenlandicus) shot on their winter range in the southern Northwest Territories. There was a near-linear increase in the in vitro, dry-matter disappearance (IVDMD) with fermentation time (30-120 h) for all eight lichen species that we tested. In contrast, IVDMD was…
The Bailey Point Region and Other Muskox Refugia in the Canadian Arctic
The muskox ( Ovibos moschatus ) is widely distributed over much of arctic Canada but only at a few locations do their densities remain high and populations relatively stable. These refugia constitute the most favourable muskox ranges in the Canadian Arctic Archipelago .... Refugia for muskoxen in the High Arctic include lowlands on eastern Axel Heiberg Island in the Mokka Fiord region, the lowlands of northeastern Devon Island, and the Bailey Poi…
In Vitro Digestibilities of Plants Utilized by Barren-Ground Caribou
Rumen fluids of barren-ground caribou (Rangifer tarandus groenlandicus) were used with standard in vitro procedures in March 1981 to investigate the relative digestibilities of forages collected on caribou winter ranges in the southern Northwest Territories. In vitro dry matter disappearance (IVDMD) of the three most abundant arboreal lichens, when fermented in test tubes for 60 h, averaged 67% compared with 43% for the seven most common terricol…
Caribou and the North
Biology (4 works) · Arctic (3 works) · Botany (3 works) · Ecology (3 works) · Ecology (3 works) · Geography (3 works) · Indigenous Studies and Ecology (3 works) · Lichen (3 works) · Ruminant Nutrition and Digestive Physiology (3 works) · Agronomy (2 works)