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Two estimates of trout populations were obtained in a large stream, the St. Mary River (mean annual flow 54 m3/sec) in southeastern British Columbia. Underwater counts of trout by seven swimmers were stratified by bank and mid-channel zones, and expanded. Mean expanded counts were compared to mean Petersen (mark-recapture) estimates that also were obtained by underwater observation of fish during angling. The expanded count from the underwater enumeration underestimated the population of cutthroat trout (Salmo clarki lewisi) over 20 cm in length by 26%, thus requiring a correction factor of 1.35 to adjust the expanded count. Species composition and estimated size distributions of observed fish were similar to a sample captured by angling. Replicated counts of trout over 30 cm in length were homogeneous, but counts of 10-30 cm trout were heterogeneous. Expanded underwater counts obtained from as few as two swimmers were reliable if they were replicated, conducted in both representative near-shore and mid-chann
Slaney, P.A., Martin, A.D.. 1111. Accuracy of Underwater Census of Trout Populations in a Large Stream in British Columbia. Ministry of Environment. Fisheries Report. FRN319
Topic:
Keywords: St. Mary River, cutthroat trout, Salmo clarki lewisi, population estimates, counts
This report provides a summary of projects funded by Forest Renewal BC in 1999/2000. Funding was allocated to watershed restoration, enhanced forestry, biodiversity research, operational inventory, forest recreation, and project administration.
Ministry of Environment, Lands and Parks. 1111. Activities Funded through Forest Renewal BC - 1999/2000 Annual Report. Ministry of Environment, Lands and Parks
Topic:
Keywords: forestry, biodiversity, inventory, recreation, Forest Renewal BC
Arctic Grayling within the drainage
system of the Williston Reservoir
have a restricted distribution above
the W.A.C. Bennett Dam on the
Peace River. Populations within the
Williston Reservoir and its tributaries
have been isolated from the
remainder of the Peace system
since at least 1963, when preparations
to construct the dam commenced.
In 1972, the reservoir
achieved full pool. Both the reservoir
and stream populations
remained reasonably abundant
and widespread until about 1982,
when grayling in all small and
medium-sized streams flowing
directly into the reservoir rapidly
disappeared. By 1988, only populations
native to the largest river
systems survived.
Lashmar, Murray, Ptolemy, Juanita. 1111. Arctic Grayling (Wildlife at Risk). Ministry of Water, Land and Air Protection. Species at Risk Brochure
Topic: Species and Ecosystems at Risk
Keywords: species at risk, sara, williston reservoir, williston reservoir, population, endangered, threatened
The requirements of wild animals for food, water, cover and living space have long been the basis of studies of wildlife habitat - probably even before the appearance of Leopold's text on wildlife management in 1993. Habitat mapping is essentially efforts to relate such seemingly axiomatic truths to mapped bases. Finding common denominators of habitat of mountain sheep and mountain beaver, two species with restricted distributions; as well as with white-tailed deer and robins both of which range from human settled valleys to remote alpine habitat. Once such a comprehensive habitat framework is devised, a classification system is needed to map it. Biophysical Inventory is an ecological mapping system developed for all species but has been applied to a limited number of species for several years. Recently there has been increasing use of the system to varied species including cattle, plants and insects. It appears the system is suitable for all species for which there is an understanding of habitat requirements.
B. A. Pendergast. 1111. Biophysical Inventory An Historical Perspective
A list of the bird species which may be observed above 100 meters elevation in Mount Seymour Provincial Park, in first growth forest, sub-alpine parkland, aquatic habitats, and 2nd growth forests.
British Columbia Wildlife Watch, Compiled by Al Grass and Vic Adamo. 1111. Bird Checklist: Mount Seymour Provincial Park. BC Ministry of Environment, Lands and Parks. Wildlife Watch Brochure
The Regional District of Fraser Cheam’s wetland. Park is
located in Popkum, about 15 km east of Chilliwack. Cheam
Lake Wetlands Regional Park encompasses about 93
hectares (250 acres), with almost half being lake and
marsh. In addition to wildlife viewing; there are opportunities
to picnic and to hike. Please note that dogs, either on
or off leash, are not permitted within park boundaries, and
boats or flotation devises of any kind are not permitted on
the lake.
The Park is an example of habitat restoration. The original
lake was drained in the 1950’s during the process of mining
marl from the bottom sediments. Ducks Unlimited Canada
and the Department of Fisheries arid Oceans built a water
control structure with a fish ladder in 1992 to allow the lake
to reflood, and to create valuable wetland habitat. Changes
are occurring as the lake establishes, and new wildlife
species will begin to visit the Park. This is your opportunity
to watch this change.
British Columbia Wildlife Watch. 1111. Bird Checklist: Cheam Lake Wetlands Regional Parklands. Ministry of Environment. Wildlife Watch Brochure
Wildlife viewing opportunities in the Prince George area.
BC Wildlife Watch. 1111. Bird Viewing Around Prince George. Ministry of Environment. Wildlife Watch Brochure
Topic: Wildlife-Human Interaction
Keywords: bc, british columbia, migration, bird watching, prince george, wildlife watch, cottonwood ialand park, wilkins park, forests for the wild, mcmillan creek regional park, west lake provincial park, wildlife viewing ethics
Even though British Columbia has abundance of freshwater resources, there are surprisingly few large lakes. Fewer than 180 of our lake sare large enough - 10 square kilometres or larger - to be called a large lake. That's less than one in a thousand of the lakes in BC. Our field trip to a large lake showed us why it's so important to protect each and every one we have.
Large lakes are like cities underwater. They teem with all kinds of fish and aquatic life that live in different zones, or habitat niches. These are like ecological neighbourhoods. The different conditions in these zones are the reason large lakes can support so much biodiversity - a variety of living things at the genetic, species and ecosystem levels.
Habitat Conservation Trust Fund. 1111. British Columbia Freshwater Fish Field Report: Large Lakes. Ministry of Environment
Almost all of British Columbia's fish species are descended from ancestors that migrated here thousands of years ago, up ancient rivers that were created as the glaciers melted. BC still has mighty rivers like the Fraser, Skeena and Peace that are travelled by millions of fish each year. On our river field trips, we discovered how fish are competing for their place on waterways that are no longer wild.
Rivers were British Columbia's first superhighways, and both people and fish still use them to get from one place to another. They are like arteries that carry the lifeblood of the province.
Habitat Conservation Trust Fund. 1111. British Columbia Freshwater Fish Field Report: Rivers. Ministry of Environment
People may think small lakes are all the same, or that there are so many of them we don't need to worry about protecting them. On our field trips we learned how important, and how vulnerable, small lakes are.
Small lakes are miniature ecosystems, each one as individual as a finger-print. There are thousands of small lakes scattered across British Columbia, each different from the others around it. They vary from cold, clear mountain tarns to dark, acidic muskeg lakes with tea-coloured water, saline pools, white with salt, and cool, clean valley bottom lakes.
Habitat Conservation Trust Fund. 1111. British Columbia Freshwater Fish Field Report: Small Lakes. Ministry of Environment
Topic: Fish and Fish Habitats
Keywords: fish, habitats, small lake
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