by | 10 January 2020
The Eastern Habitat Joint Venture (EHJV) is a group of partners from six Canadian provinces, namely Ontario, Québec, New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland-and-Labrador. In each of these provinces, government departments, non-government agencies, landowners and many other organizations with an interest in conservation work together on initiatives designed to support the North American Waterfowl Management Plan. This document presents a summary of the EHJV in Québec and includes examples of wetland protection and restoration projects carried out over a 30-year period (1989 to 2019).
by Marie-Claude Boileau | 3 July 2019
The upstream migration of Bérard River Arctic charr was subject to monitoring to establish its reference state. A total of 1,823 anadromous Arctic charrs were recorded at the counting fence from August 8 to
September 8, 2017, of which 83 were randomly selected during this period to characterize different biological parameters.
by Marie-Claude Boileau | 4 April 2019
Forestry research paper No. 7
This report demonstrates the suitability of using multiple regression and principal component analyses for growth prediction and phytosociological studies in black spruce forests of eastern Canada.
The data come from 125 black spruce stands located in the Boreal forest of Canada from Newfoundland to western Ontario. The observed factors in this study are: dominance of species and species groups, stand density, soil moisture regime and site index.
The prediction of site index is satisfactory using the dominance of species and species groups in multiple regression. Principal component analysis shows some possibilities of application for the identification of broad site quality classes. Further study is needed to perfect the vectorial ordinations before this method can be used for prediction purposes.
The classification of forest stands as to types and associations seems to be relatively simple with the component analysis. For application to field conditions each region should be studied separately in order to increase the precision of the vectorial ordinations.
by equipewp | 13 March 2019
The general aim of the project was to gather information on Arctic charr populations in rivers and lakes located close to the Aupaluk community.
by Claire Morin | 6 March 2019
Published in Trees https://doi.org/0.1007/s00468-013-0899-4.
Tree growth in most boreal forests is strongly regulated by temperature and nitrogen (N) availability. The expected increases in soil temperature and N deposition over the next decades have the potential to affect the phenology of tree growth and xylogenesis. To test for these changes on xylogenesis of balsam fir (Abies balsamea (L.) Mill), 12 mature trees were subjected to a combination of experimentally increased soil temperature (+4 °C) with an earlier snowmelt (2–3 weeks) and N deposition (3 x ambient rain N concentrations using NH4–NO3 in artificial precipitation) over a 3-year period. Increased soil temperature and atmospheric N deposition had no significant effect on the number of tracheids produced (38–51), tracheid diameter (27.2–29.0 mm) and cell wall thickness (2.5–3.1 mm). For the 3 years of treatment, xylogenesis was initiated at minimum and average daily air temperatures of 0.6 ± 0.5 and 6.5 ± 0.6 °C, respectively, with inter-annual differences of 17 days in the onset of xylogenesis. The earlier snowmelt induced by soil warming did not hasten resumption of xylogenesis, and the time dynamics of xylogenesis was not affected by higher N deposition. Our results suggest that soil temperature and the timing of snowmelt have no direct influence on the breaking of cambium dormancy in balsam fir. The short-term effects of increased soil temperature and N deposition on xylogenesis of mature balsam fir appear to be small compared with the effects of air temperature and are likely to be associated with a persistent N limitation.
