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From 1 - 10 / 498
  • The climatologies presented here are based on information from thousands of temperature and precipitation observation sites in British Columbia, Yukon, Alberta, Alaska, Washington, Idaho, and Montana. The temperature climatologies were supplemented by upper atmosphere temperature climatologies derived from the National Center for Environmental Prediction’s North American Regional Reanalysis (Mesinger et al., 2006; emc.ncep.noaa.gov/mmb/rreanl/ ). Precipitation climatologies were improved using data from snow observing networks in British Columbia (link is external) and the United States. Further information about high-elevation precipitation was obtained by analyzing the glacier inventory for British Columbia developed by the University of Northern British Columbia (Bolch et al., 2010). A subsequent report will detail the creation of these climatologies and explain how these data were applied.

  • This study assessed certain factors which might have influenced the development of macrobenthic communities on the new islands. Since benthic animals provide food for fish and birds, results are pertinent to the ultimate success of the island project. Three factors were examined, namely the presence of the islands, presence of vegetation and changes through time (temporal aspects). Since the data are from the first invertebrate collections made subsequent to planting, they also represent an important baseline to measure subsequent changes against.

  • Data are presented on the invertebrate fauna identified from the ballast water of 63 vessels arriving at five British Columbia ports between December, 1995, and January, 1997. Those arriving from the western North Pacific were of particular interest. In total, 352 vessels were boarded and appropriate ship personnel were interviewed. Those vessels with ballast water from various locations in the western North Pacific were sampled if permission from the vessel's representative was obtained. Information on ballast capacity, ballast on board, and other pertinent information has been summarized for all vessels, where available. Temperature and salinity data were obtained at the same time as the biological samples were collected.

  • This report focuses on the cooperative efforts of agency staff, members of industry and the public in developing and constructing a new log-handling facility and rehabilitating an industrialized estuarïne area of approximately 32 hectares that had been intensively utilized for log handling activities for over 75 years. Reported are the planning and construction of the new dryland log sorting facility and the rehabilitative measures, the design details and preliminary results of the first year's studies of a longer term program being undertaken to assess the stability and biological implications of the rehabilitative measures, and future studies. Preliminary follow-up study results indicate that the intertidal islands are stable, 93% of the 23,302 marsh cores transplanted are growing, invertebrate colonization is still incomplete, juvenile wild chinook and chum salmon utilize the islands and catches are proportional to the abundance of salmon fry in the estuary. Hatchery reared juvenile salmon do not make extensive use of the islands. Migratory bird use of the islands has been recorded. All studies are continuing.

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    IN THIS PAPER, WE PRESENT a structural analysis of the abundance and distribution of arthropods in relation to supralittoral vegetation in the ecotone between the sea and the land. We evaluated the family-level richness and abundance of aquatic and terrestrial arthropods in marine supralittoral habitats and related arthropod assemblages to the presence and composition of supralittoral vegetation. Our results suggest that removal of supralittoral vegetation may have cascading effects on supralittoral arthropod communities and may adversely affect the productivity of both aquatic and terrestrial arthropods.

  • Statistically downscaled Canada-wide climate data for precipitation, minimum and maximum temperature at a resolution of 300 arc seconds (~10 km). This includes both historical hindcasts and projections to 2100. Developed by PCIC.

  • Samples of macrobenthic organisms were obtained at seven stations on a presumed pollution gradient from the head of Vancouver Harbour through to outer Howe Sound. Polychaetes (83 apparent species) and molluscs (43 apparent species) were the most abundant faunal groups numerically (44.8 and 47.9%, respectively). Molluscs accounted for most of the biomass (87.9%). The following univariate and multivariate methods were used to investigate structural changes in the benthic communities: ANOVA, Abundance–Biomass Comparisons and related statistics, cluster analysis, multidimensional scaling, and the BIOENV procedure. Most of the analyses divided the seven stations into three groups: Port Moody Arm (Inner Harbour): two stations; Inner and Outer Harbour: four stations, and Gibsons (Howe Sound): one station. Further cause–effect investigations are needed to determine the sensitivity to organic pollution of indicator species identified in the survey. However our data correlating benthic community changes to sediment chemistry suggest the inner harbour was dominated by pollution-tolerant species. Depth and sediment grain size were confounding factors for the interpretations.

  • The present study reports the results of field experiments to determine the sediment preference of Lycodopsis pacifica~ the black belly eel-pout, which is commonly obtained with commercial shrimp (Pandalu8 sPP) in coastal B.C. The sampling was carried out near Point Grey, which is adjacent to outer Burrard Inlet (Figure 1), in the summer of 1966. A total of 7S trawl hauls were completed during the study, and in each haul all fish were identified and counted.

  • The simulated data includes snow water equivalent, soil moisture, surface runoff (runoff), subsurface runoff (baseflow), and actual evapotranspiration for a region covering the Peace, upper Columbia, Fraser and Campbell River watersheds. Daily values are provided for all variables, with projected data available from 1950-01-01 to 2100-12-31 and historical data available from 1950-01-01 to 2006-12-3. For the hydrologic projections, the GCM data were downscaled to a 1/16-degree resolution using Bias-Correction Spatial Disaggregation (BCSD) (Wood et al. 2004) following Werner (2011). Application of the VIC model and the generation of hydrologic projections for the Peace, Fraser, upper Columbia and Campbell River watersheds are described in Shrestha et al. (2012) and Schnorbus et al. (2011, 2014). The gridded data were simulated using the Variable Infiltration Capacity (VIC) model (Liang et al. 1994, 1996). The simulations are generated by forcing the VIC model using statistically downscaled global climate model (GCM) projections from the Coupled Model Intercomparison Project Phase 3 (CMIP3; Meehl et al. 2007) driven by a range of future emission specified by three separate scenarios (A1B, A2 and B1) from the IPCC Special Report on Emissions Scenarios (SRES; Nakicenovic et al. 2000). Also included is historical data generated by running the VIC model with interpolated observed climate data.

  • Eelgrass, marshes and kelp beds support juvenile fish populations in the Strait of Georgia and other inshore areas of the northeast Pacific and are protected as valuable fish habitat. Information on effects of mean sea level variations on these habitats is required, in light of the changes induced by climate change on mean sea level and the corresponding re-distribution of intertidal areas.