Open Government Portal
Found 10 records similar to Kelp Density - Pacific Rim
This program focuses on capturing the abundance and structure of groundfish communities typical of nearshore kelp forests including Black Rockfish (Sebastes melanops), Copper Rockfish (Sebastes caurinus), Kelp Greenling (Hexagrammos decagrammus) and Sea Perch: Kelp Perch (Brachyistius frenatus), Pile Perch (Rhacochilus vacca) and Striped Perch (Embiotoca lateralis) combined. Surveys were completed annually in August and September at sites within the Broken Group Islands and consisted of a transect through a kelp forest patch at approximately 10m depth. Surveys began in 2008 and changed methodology in 2013 from a 2 diver survey (2 surveyors along a 25m long by 4m wide band transect) to a 1 diver survey (1 diver along a 30m long by 2 m wide band transect). This data is used to determine the status and trend in kelp-forest associated fish, including fish abundance and the effectiveness of the Rockfish Conservation Areas (RCAs) on fish abundance.
This dataset is a contribution to the development of a kelp distribution vector dataset. Bull kelp (Nereocystis leutkeana) and giant kelp (Macrocystis pyrifera) are important canopy-forming kelp species found in marine nearshore habitats on the West coast of Canada. Often referred to as a foundation species, beds of kelp form structural underwater forests that offer habitat for fishes and invertebrates. Despite its far-ranging importance, kelp has experienced a decline in the west coast of North America.
The purpose of this study was to characterize the kelp bed at Batture-aux-Alouettes, a preferred food source for the green sea urchin (Strongylocentrotus droebachiensis). The green urchin is fished commercially in Quebec and the fishing effort is concentrated on the Batture-aux-Alouettes near Tadoussac, at the mouth of the Saguenay Fjord. The study was conducted in two separate phases in 2018 and 2019. The main objective of this study was to determine the abundance and biomass of the kelp bed at Batture-aux-Alouettes.
Distribution of kelp beds in coastal British Columbia. Attribute information includes relative abundance, species, biomass and density of the beds. CRIMS is a legacy dataset of BC coastal resource data that was acquired in a systematic and synoptic manner from 1979 and was intermittently updated throughout the years. Resource information was collected in nine study areas using a peer-reviewed provincial Resource Information Standards Committee consisting of DFO Fishery Officers, First Nations, and other subject matter experts.
Kelp features were taken from digitized survey source fieldsheets produced by the Canadian Hydrographic Service (CHS). The area covered by this dataset encompasses various surveyed areas along the western coast of North America in British Columbia coastal waters. CHS has an extensive collection of hydrographic survey data in the form of field sheets based on over 100 years of surveying in Canada. Data has been collected using a wide range of methods and systems, from lead-line to modern day multi-transducer and multibeam systems.
List of publically available sequence data for strains of Salmonella enterica, Escherichia coli, Listeria monocytogenes, Vibrio parahaemolyticus and Campylobacter spp. isolated by the Canadian Food Inspection Agency (CFIA) from food, animal feed, fertilizer and environmental samples.
Linking to non-government of Canada websites
Links to Websites not under the control of the Government of Canada are provided solely for the convenience of the Website visitors. The Government of Canada is not responsible for the accuracy, currency or reliability of the content.
The smallest marine mammals in North America, sea otters occupy chilly coastal waters in the central and north Pacific Ocean. Averaging 1.2 metres in length, male sea otters typically weigh about 45 kilograms. Females are slightly smaller. Otters have large, flat heads, large teeth to crush shells, and blunt noses with long, stiff whiskers.
A targeted survey of 2,233 samples of leafy vegetables for parasites found 98.8% to be satisfactory. Samples were analyzed for Cyclospora cayetanensis, Cryptosporidium spp., Toxoplasma gondii, and Giardia spp. Two samples contained parasite DNA of Cryptosporidium spp. and three samples contained Toxoplasma gondii DNA.
A targeted survey analyzed 3,962 samples of powdered infant formula for bacterial pathogens. All samples were tested for Enterobacteriaceae. Of the 3,962 samples, 2,965 were tested for generic Escherichia coli (E. coli) and Salmonella spp. and 997 samples were tested for Cronobacter spp.
Neonicotinoid insecticides are environmentally persistent and highly water-soluble, and thus are prone to leaching into surface waters where they may negatively affect non-target aquatic insects. Most of the research to date has focused on imidacloprid, and few data are available regarding the effects of other neonicotinoids or their proposed replacements (butenolide insecticides). The objective of this study was to assess the toxicity of six neonicotinoids (imidacloprid, thiamethoxam, acetamiprid, clothianidin, thiacloprid, and dinotefuran) and one butenolide (flupyradifurone) to Hexagenia spp. (mayfly larvae).