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We have found 313 datasets for the keyword "volume biologique brut". You can continue exploring the search results in the list below.
Datasets: 104,908
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313 Datasets, Page 1 of 32
FRI: Gross biological volume - total
Gross biological volume - total (GBVTOT) is an expression of in-the-tree stem total volume (m3) on a per-hectare basis. Calculated from the ground to the tip. Available here as a raster (GeoTIF) with a 20 m pixel resolution.Download: Here The Saskatchewan Ministry of Environment, Forest Service Branch, has developed a forest resource inventory (FRI) which meets a variety of strategic and operational planning information needs for the boreal plains. Such needs include information on the general land cover, terrain, and growing stock (height, diameter, basal area, timber volume and stem density) within the provincial forest and adjacent forest fringe. This inventory provides spatially explicit information as 10 m or 20 m raster grids and as vectors polygons for relatively homogeneous forest stands or naturally non-forested areas with a 0.5 ha minimum area and a 2.0 ha median area. Gross biological volume per hectare - total (GBVTOT) is an expression of in-the-tree stem total volume (m3) on a per-hectare basis. Calculations are made from the ground to the tip. GBVTOT is available here as a color-mapped 16-bit unsigned integer raster grid in GeoTIFF format with a 20 m pixel resolution. An ArcGIS Pro layer file (*.lyrx) is supplied for viewing GBVTOT data in the following 50 m3/ha categories. Domain: [NULL, 0…1000]. RANGE LABEL RED GREEN BLUE 0 <= GBVTOT < 25 0 NA NA NA 25 <= GBVTOT < 75 50 63 81 181 75 <= GBVTOT < 125 100 66 101 160 125 <= GBVTOT < 175 150 68 121 138 175 <= GBVTOT < 225 200 71 140 117 225 <= GBVTOT < 275 250 74 160 96 275 <= GBVTOT < 325 300 85 178 79 325 <= GBVTOT < 375 350 123 191 74 375 <= GBVTOT < 425 400 161 203 70 425 <= GBVTOT < 475 450 198 216 66 475 <= GBVTOT < 525 500 236 229 61 525 <= GBVTOT < 575 550 255 226 53 575 <= GBVTOT < 625 600 255 209 40 625 <= GBVTOT < 675 650 255 191 28 675 <= GBVTOT < 725 700 255 174 16 725 <= GBVTOT < 775 750 255 156 3 775 <= GBVTOT < 825 800 253 139 9 825 <= GBVTOT < 875 850 251 121 20 875 <= GBVTOT < 925 900 249 103 31 925 <= GBVTOT < 975 950 246 85 43 975 <= GBVTOT <= 1000 1000 244 67 54 For more information, see the Forest Inventory Standard of the Saskatchewan Environmental Code, Forest Inventory Chapter.
FRI: Gross biological volume - softwood
Gross biological volume - softwood (GBVSWD) is an expression of in-the-tree stem softwood volume (m3) on a per-hectare basis. Calculated from the ground to the tip. Available here as a raster (GeoTIF) with a 20 m pixel resolution.Download: Here The Saskatchewan Ministry of Environment, Forest Service Branch, has developed a forest resource inventory (FRI) which meets a variety of strategic and operational planning information needs for the boreal plains. Such needs include information on the general land cover, terrain, and growing stock (height, diameter, basal area, timber volume and stem density) within the provincial forest and adjacent forest fringe. This inventory provides spatially explicit information as 10 m or 20 m raster grids and as vectors polygons for relatively homogeneous forest stands or naturally non-forested areas with a 0.5 ha minimum area and a 2.0 ha median area. Gross biological volume per hectare - softwood (GBVSWD) is an expression of in-the-tree stem softwood volume (m3) on a per-hectare basis. Calculations are made from the ground to the tip. GBVSWD is available here as a color-mapped 16-bit unsigned integer raster grid in GeoTIFF format with a 20 m pixel resolution. An ArcGIS Pro layer file (*.lyrx) is supplied for viewing GBVSWD data in the following 50 m3/ha categories. Domain: [NULL, 0…1000]. RANGE LABEL RED GREEN BLUE 0 <= GBVSWD < 25 0 NA NA NA 25 <= GBVSWD < 75 50 63 81 181 75 <= GBVSWD < 125 100 66 101 160 125 <= GBVSWD < 175 150 68 121 138 175 <= GBVSWD < 225 200 71 140 117 225 <= GBVSWD < 275 250 74 160 96 275 <= GBVSWD < 325 300 85 178 79 325 <= GBVSWD < 375 350 123 191 74 375 <= GBVSWD < 425 400 161 203 70 425 <= GBVSWD < 475 450 198 216 66 475 <= GBVSWD < 525 500 236 229 61 525 <= GBVSWD < 575 550 255 226 53 575 <= GBVSWD < 625 600 255 209 40 625 <= GBVSWD < 675 650 255 191 28 675 <= GBVSWD < 725 700 255 174 16 725 <= GBVSWD < 775 750 255 156 3 775 <= GBVSWD < 825 800 253 139 9 825 <= GBVSWD < 875 850 251 121 20 875 <= GBVSWD < 925 900 249 103 31 925 <= GBVSWD < 975 950 246 85 43 975 <= GBVSWD <= 1000 1000 244 67 54For more information, see the Forest Inventory Standard of the Saskatchewan Environmental Code, Forest Inventory Chapter.
FRI: Gross biological volume - hardwood
Gross biological volume - hardwood (GBVHWD) is an expression of in-the-tree stem hardwood volume (m3) on a per-hectare basis. Calculated from the ground to the tip. Available here as a raster (GeoTIF) with a 20 m pixel resolution.Download: Here The Saskatchewan Ministry of Environment, Forest Service Branch, has developed a forest resource inventory (FRI) which meets a variety of strategic and operational planning information needs for the boreal plains. Such needs include information on the general land cover, terrain, and growing stock (height, diameter, basal area, timber volume and stem density) within the provincial forest and adjacent forest fringe. This inventory provides spatially explicit information as 10 m or 20 m raster grids and as vectors polygons for relatively homogeneous forest stands or naturally non-forested areas with a 0.5 ha minimum area and a 2.0 ha median area. Gross biological volume per hectare - hardwood (GBVHWD) is an expression of in-the-tree stem hardwood volume (m3) on a per-hectare basis. Calculations are made from the ground to the tip. GBVHWD is available here as a color-mapped 16-bit unsigned integer raster grid in GeoTIFF format with a 20 m pixel resolution. An ArcGIS Pro layer file (*.lyrx) is supplied for viewing GBVHWD data in the following 50 m3/ha categories. Domain: [NULL, 0…1000]. RANGE LABEL RED GREEN BLUE 0 <= GBVHWD < 25 0 NA NA NA 25 <= GBVHWD < 75 50 63 81 181 75 <= GBVHWD < 125 100 66 101 160 125 <= GBVHWD < 175 150 68 121 138 175 <= GBVHWD < 225 200 71 140 117 225 <= GBVHWD < 275 250 74 160 96 275 <= GBVHWD < 325 300 85 178 79 325 <= GBVHWD < 375 350 123 191 74 375 <= GBVHWD < 425 400 161 203 70 425 <= GBVHWD < 475 450 198 216 66 475 <= GBVHWD < 525 500 236 229 61 525 <= GBVHWD < 575 550 255 226 53 575 <= GBVHWD < 625 600 255 209 40 625 <= GBVHWD < 675 650 255 191 28 675 <= GBVHWD < 725 700 255 174 16 725 <= GBVHWD < 775 750 255 156 3 775 <= GBVHWD < 825 800 253 139 9 825 <= GBVHWD < 875 850 251 121 20 875 <= GBVHWD < 925 900 249 103 31 925 <= GBVHWD < 975 950 246 85 43 975 <= GBVHWD <= 1000 1000 244 67 54 For more information, see the Forest Inventory Standard of the Saskatchewan Environmental Code, Forest Inventory Chapter.
Forest Gross Stem Volume 2015
Forest Gross Stem Volume 2015Gross stem volume. Individual tree gross volumes are calculated using species-specific allometric equations. In the measured ground plots, gross total volume per hectare is calculated by summing the gross total volume of all trees and dividing by the area of the plot (units = m3ha-1). Products relating the structure of Canada's forested ecosystems have been generated and made openly accessible. The shared products are based upon peer-reviewed science and relate aspects of forest structure including: (i) metrics calculated directly from the lidar point cloud with heights normalized to heights above the ground surface (e.g., canopy cover, height), and (ii) modelled inventory attributes, derived using an area-based approach generated by using co-located ground plot and ALS data (e.g., volume, biomass). Forest structure estimates were generated by combining information from lidar plots (Wulder et al. 2012) with Landsat pixel-based composites (White et al. 2014; Hermosilla et al. 2016) using a nearest neighbour imputation approach with a Random Forests-based distance metric. These products were generated for strategic-level forest monitoring information needs and are not intended to support operational-level forest management. All products have a spatial resolution of 30 m. For a detailed description of the data, methods applied, and accuracy assessment results see Matasci et al. (2018). When using this data, please cite as follows: Matasci, G., Hermosilla, T., Wulder, M.A., White, J.C., Coops, N.C., Hobart, G.W., Bolton, D.K., Tompalski, P., Bater, C.W., 2018b. Three decades of forest structural dynamics over Canada's forested ecosystems using Landsat time-series and lidar plots. Remote Sensing of Environment 216, 697-714. Matasci et al. 2018)Geographic extent: Canada's forested ecosystems (~ 650 Mha)Time period: 1985–2011
Cubing rate and prediction models
__The link: *Access the data directory* is available in the section*Dataset Description Sheets; Additional Information*__.Two products are available to know the gross commercial volume of a tree according to its diameter at chest height (DHP) and its height. Their contents and the way of using them are different, but they both make it possible to obtain gross commercial volume values per tree. The first product is the **LIN3 cubing rate**. It is presented in the form of a table where the values of the gross market volume can be extracted directly. These are local rates, i.e. the height used in the general rate equation (volume prediction models) is predicted by height-DHP relationships developed per survey unit.The second product offers increased precision. It is presented in the form of several tables where the values of the gross commercial volume do not appear directly. Rather, the content of these tables is used to apply **models for predicting the height and gross commercial volume** of a tree. Height prediction models are also developed locally at the scale of survey units. The use of the product requires consultation of the document [“Models for predicting the height and gross commercial volume of trees - Method and use”] (https://mrnf.gouv.qc.ca/nos-publications/modele-prediction-hauteur-volume/).__ 📣 Recommendation of the Forest Inventory Directorate: __ it is preferable to use models to predict height and gross market volume in territories where they are available. A new height prediction model is available when a territory obtains results from forest compilations. In the absence of these models, it is still possible to use the LIN3 cubing rate.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**
FRI: Gross merchantable volume - total
Gross merchantable volume - total (GMVTOT) is an expression of merchantable stem total volume (m3) on a per-hectare basis. Available here as a raster (GeoTIF) with a 20 m pixel resolution.Download: Here The Saskatchewan Ministry of Environment, Forest Service Branch, has developed a forest resource inventory (FRI) which meets a variety of strategic and operational planning information needs for the boreal plains. Such needs include information on the general land cover, terrain, and growing stock (height, diameter, basal area, timber volume and stem density) within the provincial forest and adjacent forest fringe. This inventory provides spatially explicit information as 10 m or 20 m raster grids and as vectors polygons for relatively homogeneous forest stands or naturally non-forested areas with a 0.5 ha minimum area and a 2.0 ha median area. Gross merchantable volume per hectare - total (GMVTOT) is an expression of merchantable stem volume (m3) on a per-hectare basis. Calculations are made assuming a cut-to-length scenario, and including all stem wood from a 30 cm stump height to an 8 cm top diameter (inside bark), with a minimum bole length of 5.1 m and a minimum log length of 2.4 m for softwood and 2.7 m for hardwood. GMVTOT is available here as a color-mapped 16-bit unsigned integer raster grid in GeoTIFF format with a 20 m pixel resolution. An ArcGIS Pro layer file (*.lyrx) is supplied for viewing GMVTOT data in the following 50 m3/ha categories. Domain: [NULL, 0…1000]. RANGE LABEL RED GREEN BLUE 0 <= GMVTOT < 25 0 NA NA NA 25 <= GMVTOT < 75 50 63 81 181 75 <= GMVTOT < 125 100 66 101 160 125 <= GMVTOT < 175 150 68 121 138 175 <= GMVTOT < 225 200 71 140 117 225 <= GMVTOT < 275 250 74 160 96 275 <= GMVTOT < 325 300 85 178 79 325 <= GMVTOT < 375 350 123 191 74 375 <= GMVTOT < 425 400 161 203 70 425 <= GMVTOT < 475 450 198 216 66 475 <= GMVTOT < 525 500 236 229 61 525 <= GMVTOT < 575 550 255 226 53 575 <= GMVTOT < 625 600 255 209 40 625 <= GMVTOT < 675 650 255 191 28 675 <= GMVTOT < 725 700 255 174 16 725 <= GMVTOT < 775 750 255 156 3 775 <= GMVTOT < 825 800 253 139 9 825 <= GMVTOT < 875 850 251 121 20 875 <= GMVTOT < 925 900 249 103 31 925 <= GMVTOT < 975 950 246 85 43 975 <= GMVTOT <= 1000 1000 244 67 54For more information, see the Forest Inventory Standard of the Saskatchewan Environmental Code, Forest Inventory Chapter.
FRI: Gross merchantable volume - softwood
Gross merchantable volume - softwood (GMVSWD) is an expression of merchantable stem softwood volume (m3) on a per-hectare basis. Available here as a raster (GeoTIF) with a 20 m pixel resolution.Download: Here The Saskatchewan Ministry of Environment, Forest Service Branch, has developed a forest resource inventory (FRI) which meets a variety of strategic and operational planning information needs for the boreal plains. Such needs include information on the general land cover, terrain, and growing stock (height, diameter, basal area, timber volume and stem density) within the provincial forest and adjacent forest fringe. This inventory provides spatially explicit information as 10 m or 20 m raster grids and as vectors polygons for relatively homogeneous forest stands or naturally non-forested areas with a 0.5 ha minimum area and a 2.0 ha median area. Gross merchantable volume per hectare - softwood (GMVSWD) is an expression of merchantable softwood stem volume (m3) on a per-hectare basis. Calculations are made assuming a cut-to-length scenario, and including all stem wood from a 30 cm stump height to an 8 cm top diameter (inside bark), with a minimum bole length of 5.1 m and a minimum log length of 2.4 m for softwood. GMVSWD is available here as a color-mapped 16-bit unsigned integer raster grid in GeoTIFF format with a 20 m pixel resolution. An ArcGIS Pro layer file (*.lyrx) is supplied for viewing GMVSWD data in the following 50 m3/ha categories. Domain: [NULL, 0…1000]. RANGE LABEL RED GREEN BLUE 0 <= GMVSWD < 25 0 NA NA NA 25 <= GMVSWD < 75 50 63 81 181 75 <= GMVSWD < 125 100 66 101 160 125 <= GMVSWD < 175 150 68 121 138 175 <= GMVSWD < 225 200 71 140 117 225 <= GMVSWD < 275 250 74 160 96 275 <= GMVSWD < 325 300 85 178 79 325 <= GMVSWD < 375 350 123 191 74 375 <= GMVSWD < 425 400 161 203 70 425 <= GMVSWD < 475 450 198 216 66 475 <= GMVSWD < 525 500 236 229 61 525 <= GMVSWD < 575 550 255 226 53 575 <= GMVSWD < 625 600 255 209 40 625 <= GMVSWD < 675 650 255 191 28 675 <= GMVSWD < 725 700 255 174 16 725 <= GMVSWD < 775 750 255 156 3 775 <= GMVSWD < 825 800 253 139 9 825 <= GMVSWD < 875 850 251 121 20 875 <= GMVSWD < 925 900 249 103 31 925 <= GMVSWD < 975 950 246 85 43 975 <= GMVSWD <= 1000 1000 244 67 54For more information, see the Forest Inventory Standard of the Saskatchewan Environmental Code, Forest Inventory Chapter.
FRI: Gross merchantable volume - hardwood
Gross merchantable volume - hardwood (GMVHWD) is an expression of merchantable stem hardwood volume (m3) on a per-hectare basis. Available here as a raster (GeoTIF) with a 20 m pixel resolution.Download: Here The Saskatchewan Ministry of Environment, Forest Service Branch, has developed a forest resource inventory (FRI) which meets a variety of strategic and operational planning information needs for the boreal plains. Such needs include information on the general land cover, terrain, and growing stock (height, diameter, basal area, timber volume and stem density) within the provincial forest and adjacent forest fringe. This inventory provides spatially explicit information as 10 m or 20 m raster grids and as vectors polygons for relatively homogeneous forest stands or naturally non-forested areas with a 0.5 ha minimum area and a 2.0 ha median area. Gross merchantable volume per hectare - hardwood (GMVHWD) is an expression of merchantable hardwood stem volume (m3) on a per-hectare basis. Calculations are made assuming a cut-to-length scenario, and including all stem wood from a 30 cm stump height to an 8 cm top diameter (inside bark), with a minimum bole length of 5.1 m and a minimum log length of 2.7 m for hardwood. GMVHWD is available here as a color-mapped 16-bit unsigned integer raster grid in GeoTIFF format with a 20 m pixel resolution. An ArcGIS Pro layer file (*.lyrx) is supplied for viewing GMVHWD data in the following 50 m3/ha categories. Domain: [NULL, 0…1000]. RANGE LABEL RED GREEN BLUE 0 <= GMVHWD < 25 0 NA NA NA 25 <= GMVHWD < 75 50 63 81 181 75 <= GMVHWD < 125 100 66 101 160 125 <= GMVHWD < 175 150 68 121 138 175 <= GMVHWD < 225 200 71 140 117 225 <= GMVHWD < 275 250 74 160 96 275 <= GMVHWD < 325 300 85 178 79 325 <= GMVHWD < 375 350 123 191 74 375 <= GMVHWD < 425 400 161 203 70 425 <= GMVHWD < 475 450 198 216 66 475 <= GMVHWD < 525 500 236 229 61 525 <= GMVHWD < 575 550 255 226 53 575 <= GMVHWD < 625 600 255 209 40 625 <= GMVHWD < 675 650 255 191 28 675 <= GMVHWD < 725 700 255 174 16 725 <= GMVHWD < 775 750 255 156 3 775 <= GMVHWD < 825 800 253 139 9 825 <= GMVHWD < 875 850 251 121 20 875 <= GMVHWD < 925 900 249 103 31 925 <= GMVHWD < 975 950 246 85 43 975 <= GMVHWD <= 1000 1000 244 67 54 For more information, see the Forest Inventory Standard of the Saskatchewan Environmental Code, Forest Inventory Chapter.
Ecologically and Biologically Significant Areas
Ecologically and Biologically Significant Areas (EBSAs) are areas within Canada's oceans that have been identified through formal scientific assessments as having special biological or ecological significance when compared with the surrounding marine ecosystem.Failure to define an area as an EBSA does not mean that it is unimportant ecologically. All areas serve ecological functions to some extent and require sustainable management. Rather, areas identified as EBSAs should be viewed as the most important areas where, with existing knowledge, regulators and marine users should be particularly risk averse to ensure ecosystems remain healthy and productive.Why are EBSAs identified?EBSA information is used to inform marine planning, including environmental assessment and the siting of marine-based activities, by:- Informing and guiding project-specific or regional environmental assessments;- Informing and guiding industries and regulators in their planning and operations, for example: EBSAs have been acknowledged and referred to (often as "Special Areas" or "Potentially Sensitive Areas") in oil and gas related assessments;- EBSA information has been provided to proponents of submarine cable projects to be used for route planning purposes;- Informing and guiding Integrated Oceans Management (IOM) process within five Large Ocean Management Areas (LOMAs) and twelve marine bioregions;- Serving as a basis for the identification of Areas of Interest (AOIs) and of Marine Protected Areas (MPAs) (individually and in the context of planning bioregional networks of MPAs).How are EBSAs identified?The process used to identify EBSAs is generally comprised of two phases. The first phase involves compiling scientific data and knowledge of a marine area's ecosystems - notably fish species, marine mammals, sea birds, marine flora, marine productivity, physical and chemical conditions and geology. "Knowledge" includes experiential knowledge of long-time uses of the areas. In some cases (e.g., in the Arctic), substantial efforts are taken to collect traditional knowledge on ecosystems and environmental conditions from community members, fish harvests, hunters and individuals whose knowledge of the study area complement often helps fill scientific data gaps.In the second phase, the available information for a marine area (e.g. a bioregion) is assessed against five nationally-established science-based criteria including:- Uniqueness: How distinct is the ecosystem of an area compared to surrounding ones?- Aggregation: Whether or not species populate or convene to the study area?- Fitness consequence: How critical the area is to the life history of the species that use it (e.g. is it a spawning or feeding ground)?- Naturalness: How pristine or disturbed by human activities is the study area?- Resilience: What is the ability of the ecosystem to bounce back if it is disturbed?Progress to date and next stepsEBSAs have been identified for large portions of Canada's Atlantic and Pacific Oceans as well as most of the Arctic oceans. EBSAs will continue to be identified in priority areas as resources become available to carry out the process. The boundaries or locations of existing EBSAs may be modified to reflect both new knowledge and changing environmental conditions.
Calanus spp. size and lipid content metrics in North Atlantic, 1977-2019
Data set covers metrics and metadata related to wild collected copepods Calanus spp. (C. hyperboreus, C. glacialis, C. finmarchicus) and Metridia longa: - body size in prosome length [PL]- dry weight [DW]- lipid content (oil sac area [OSA] and oil sac volume [OSV])Spatial coverage: North Atlantic sampling sites- Scotian Shelf (SS)- Gulf of Saint Lawrence (GSL)- Gulf of Maine-Georges Bank-Nantucket Shoals (GoM)- Newfoundland shelf (NFL)Cite this data as: Helenius LK, Head EJH, Jekielek P, Orphanides CD, Pepin P, Plourde S, Ringuette M, Walsh HJ, Runge JA, Johnson CL. Calanus spp. size and lipid content metrics in North Atlantic, 1977-2019. Published September 2022. Ocean Ecosystem Science Division, Fisheries and Oceans Canada, Dartmouth, N.S. https://open.canada.ca/data/en/dataset/72e6d3a1-06e7-4f41-acec-e0f1474b555b
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