We investigated the effects of acid mine drainage (AMD) from Britannia Creek, BC, Canada, a stream contaminated by an abandoned copper mine, on the estuarine food web. Near the mouth of Britannia Creek, sediments and the water contained high concentrations of dissolved copper and the waters were highly acidic. Relative to a reference location, rockweed (Fucus gardneri Silva) cover was reduced, phytoplankton biomass was lower, chironomid larvae were less abundant, and fewer gammarid amphipods colonized basket traps. Laboratory toxicity tests confirmed that sediments and water from the lower reaches of Britannia Creek and its estuary were highly toxic to midge larvae (Chironomus tentans Fabricius), the marine amphipod (Eohaustorius washingtonianus Thorsteinson) and also impaired fertilization of sand dollars (Dendraster excentricus Eschscholtz). Analyses of stomach contents of chum salmon fry (Oncorhynchus keta Walbaum) indicated that they preferred to feed on chironomid larvae and gammarid amphipods at Britannia Creek estuary but these two taxa were less abundant at Britannia Creek estuary relative to the reference location. AMD from Britannia Mine disrupted the structure and function of the intertidal ecosystem resulting in loss of food production for fish including chum salmon fry and other species.
The fish community at the Squamish River estuary in southwestern British Columbia was sampled during the period October 1975 to September 1976, using beach seines, gillnets and tidal creek enclosures. Seventeen species were recorded, of which 5 staghorn sculpin (Leptooottus armatus), starry flounder (Platichthys stellatus), surf smelt (Hypomesus pretiosus), cutthroat trout (Satmo olarki), and Dolly Varden (SalveKnus matma) were considered "permanent" residents. The staghorn sculpin was probably the most numerous fish in the estuary. Judging from day-night differences in gilinet catches, most fish activity in the estuary was either nocturnal and/or crepuscular. Canonical correlation analysis was used to relate the abundance of 8 species of fish to environmental factors, including temperature and salinity. Juvenile salmonids pink (Onaorhynchus keta), coho (0. kisutoh), chinook (0. tshawytscha) and chum (0. keta) used the estuary during spring and summer months. The salmonids in the estuary fed mainly on estuarine crustaceans and insects, especially the mysid Neomysis meroedis and the amphipod Anisogammarus confervicolus. There was no evidence of diet segregation between Dolly Varden and cutthroat trout, as has been reported in certain coastal lakes. There were no marked differences in relative abundance and distribution of juvenile salmonids when data were compared to surveys in 1972, even though other elements of the estuarine ecosystem (e.g. benthic invertebrate and algal communities) have changed because of river diversion.
Chlorophyll and phaeophytin data generated from chemical titration of water samples in the Strait of Georgia from February to October 2015.
British Columbia herring spawn indices (cumulative since 1928) are shown for each coastal kilometre identified by a unique, six-digit, section-kilometre code. This table is currently sorted and ranked by the Spawn Habitat Index (spawn habitat order).
This dataset was created to provide information to support informed management decisions for land and natural resource planning including wildlife management, protection of biodiversity and/or BC's resource based industries.
The primary aims of the 2002-2004 BC Beached Bird Survey are to increase our baseline information on the causes and rates of beached bird mortality, compare current rates with estimates from 10 years ago, and expand the coverage to a larger area of the BC Coast. By monitoring birds on beaches and keeping track of whether or not they have been affected by oil pollution, we can detect fluctuations in both the amount of oil pollution occurring in BC, as well as its effect on waterbirds. Beached bird survey data can also be used to determine what species of seabirds are most affected by oiling, what time of year the problem is most severe, and whether the proportion of oiled birds washing up on beaches is changing over time.
Through this page, you can view statistics related to aquaculture in Canada. Aquaculture is the farming of fish, shellfish and aquatic plants in fresh or salt water. It is an established practice in many parts of the world. In Canada, aquaculture was first used to enhance natural stocks. It is now a large-scale commercial industry across the country. It provides direct and indirect economic benefits to many local and regional economies. In 2012, aquaculture accounted for 174,057 tonnes, or 17.4% of total fish production in Canada.
This species list represents only those species which have so far been documented with photos and or video at Race Rocks since 2000
Observations of an algal species (Postelsia palmaeformis) with a limited distribution in BC
The distribution of freshwater finfish farm and hatchery sites in British Columbia. British Columbia has been collecting coastal resource data in a systematic and synoptic manner since 1979. Resource information is collected using peer-reviewed provincial Resource Information Standards Committee which include standards for data management and analysis