Search | Regional Ecological Data Collection Project

1 locations

8 attributes

Forest Genetics Site (from Matawa First Nations Management Open Data)

Shared by cwagenaar_matawa on February 3, 2016. updated 16 days ago.
<div>This is a generalized feature layer. For the full shapefile, visit the Land Information Ontario website link in the attributes, or e-mail fourriversrequests@matawa.on.ca.<br /></div><div><br /></div>Forest Genetics Site identifies areas designated for the study, conservation and improvement of tree species. These areas in conjunction with the application of other silvicultural activities (e.g. site preparation, fertilization, etc.) support and improve the overall yield, quality and sustainability of products from forest lands. Genetic conservation areas contribute to the understanding, management and conservation of adaptive variation and overall genetic diversity.
1 locations

8 attributes

Methylmercury in Loons (from Matawa First Nations Management Open Data)

Shared by cwagenaar_matawa on February 18, 2016. updated 16 days ago.
This is a generalized feature layer that indicates the approximate area of study for this journal article. Download is available through the link in the table, and Matawa members may request the download password by e-mailing fourriversrequests@matawa.on.ca.<div><br /></div><div><b>Abstract</b>: Deposition of inorganic mercury (Hg) from the atmosphere remains the principle source of Hg contamination for most aquatic ecosystems. Inorganic Hg is readily converted to toxic methylmercury (MeHg) that bioaccumulates in aquatic food webs and may pose a risk to piscivorous fish and wildlife. We conducted a screening-level risk assessment to evaluate the extent of risk to top aquatic piscivores: the common loon (<i>Gavia immer</i>), walleye (<i>Sander vitreus</i>), and northern pike (<i>Esox lucius</i>). Risk quotients (RQs) were calculated on the basis of a dietary Hg exposure indicator (HgPREY) modeled from over 230 000 observation of fish Hg concentrations at over 1900 locations across Canada and dietary Hg exposure screening benchmarks derived specifically for this assessment. HgPREY exceeded benchmark thresholds related to impaired productivity and behaviour in adult loons at 10% of 36% of sites, respectively. The ecozones of southeastern Canada characterized by extensive forest cover, elevated Hg deposition, and poorly buffered soils had the greatest proportion of RQs > 1.0. Results of this assessment suggest that common loons and piscivorous fishes would likely benefit from reductions in Hg deposition, especially in southeastern Canada.</div>
1 locations

8 attributes

Organochlorine (OCl) in Game Birds (from Matawa First Nations Management Open Data)

Shared by cwagenaar_matawa on February 18, 2016. updated 16 days ago.
This is a generalized feature layer that indicates the approximate area of study for this journal article. Download is available through the link in the table, and Matawa members may request the download password by e-mailing fourriversrequests@matawa.on.ca.<div><br /></div><div><b>Abstract</b>: Although studies have assessed organochlorine concentration in breast tissue (pectoral muscle) of fall-harvested game birds in Canada, data for spring-harvested game birds are limited, especially for remote sub-arctic areas. Taking into account that most traditional Aboriginal diets include a large number of spring-harvested game birds, there is a need to assess organochlorine concentration in spring-harvested water birds with respect to suitability for human consumption. We examined organochlorine concentrations in breasts of 20 mallard ducks (<i>Anas platyrhynchos</i>), 20 northern pintails (<i>A. acuta</i>), 21 Canada geese (<i>Branta canadensis interior</i>), and 20 lesser snow geese (<i>Chen caerulescens caerulescens</i>) harvested in the spring; summer-harvested shorebirds (godwits; <i>Limosa </i>spp.) were also assessed as these water birds are an important part of the game bird harvest for First Nation Cree of the western James Bay region of Ontario, Canada.</div><div><br /></div><div>The most frequently detected organochlorines in striated (pectoral) muscle were ΣPCBs (sum of 14 congeners [CBs]) and ΣDDT (sum of DDE and DDT) followed by ΣCHL (sum of oxy-chlordane, <i>cis</i>- and <i>trans</i>-nonachlor) and hexachlorobenzene with ß-hexachlorocyclohexane being the least frequently detected. For organochlorines that had ≥70% of the samples with detectable concentrations of an organochlorine (i.e., CBs 105, 128, 156, 170, 180, 183, <i>cis</i>-nonachlor, DDT, and mirex), log-linear contingency modelling revealed that the dabbling ducks had significantly more than expected detectable concentrations of most organochlorines; by contrast, geese and shorebirds had significantly less than expected detectable concentrations of most organochlorines. ANOVA for organochlorines with frequency of detection ≥70% (i.e., Aroclor 1260, ΣPCBs, CBs 118, 138, 153, 187, DDE, hexachlorobenzene, oxy-chlordane and <i>trans</i>-nonachlor) revealed significant differences between bird species: Breast tissue in snow geese contained significantly less organochlorines than Canada geese (Aroclor 1260, CBs 118, 138, and 153) and godwits (Aroclor 1260, CBs 138, 153); mallards had significantly higher concentrations compared to godwits (DDE, <i>trans</i>-nonachlor, and ΣCHLs), Canada geese (oxy-chlordane and ΣCHLs), and snow geese (oxy-chlordane, <i>trans</i>-nonachlor, ΣCHLs); and pintails had elevated levels compared to snow geese (CB 153, oxy-chlordane, <i>trans</i>-nonachlor, and ΣCHLs) and Canada geese (oxy-chlordane). However, none of the samples analyzed in the present study exceeded the consumption guideline for organochlorines in fish or poultry with most samples being orders of magnitude less than the consumption guideline even when compared to maxima. Thus, the present spring-harvested-game bird study supports previous studies of fall-harvested game birds that contend that pectoral muscle portions are safe to eat. Nevertheless, skin and fat associated with the breast muscle may be another matter.</div>
1 locations

8 attributes

EcoDistrict (from Matawa First Nations Management Open Data)

Shared by cwagenaar_matawa on February 2, 2016. updated 16 days ago.
<p>This is a generalized feature layer. For the full shapefile, visit the Land Information Ontario website link in the Table (see tab above), or e-mail fourriversrequests@matawa.on.ca.<br /></p><p>The ELC of Ontario was revised by the ELC Working Group in 2000 to better reflect the ELC system originally developed by Angus Hills (1959 and later revisions). This dataset was revised to take into account new information and new technology, while maintaining Hills's original concepts. For further information on the rationale for the revisions, refer to Ecoregions of Ontario Modifications to Angus Hills Site Regions and Districts, Revisions and Rationale, Crins and Uhlig 2000 . In 2002, the spatial data was updated using NRVIS drainage polygon data including islands from Great Lakes, St. Lawrence, and Ottawa River, and more detailed shoreline data. NTS mapping was also used to delineate the northern, eastern (Quebec border), and western (Manitoba border) boundaries of the province. In 2006, the shorelins of the Great Lakes, St. Lawrence, and Ottawa River were removed and the effected polygon boundaries were extended out over the water bodies to the extent of the provincial boundary. This modification was undertaken to provide a more generic data layer which is intended to be used as a selection tool, and as a backdrop upon which evolving and multi scalar hydorology layers may be overlain or intersected.</p><p>Legislated or Legal Authority for Collection: None.</p>