10 record(s) found with the tag "species productivity" (multi-year projects are grouped):
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Effect of spring and summer temperatures on amphipod reproduction (Gammarus lacustris)
Principal Investigator: Messmer, David J
Licenced Year(s): 2012
Summary: To determine how spring and summer temperatures affect the abundance of the amphipod Gammarus lacustris throughout the summer. Over the 2 years of the experiment, the research team plans to use amphipods from 4 different sources over several latitudes (Montana-USA, St. Denis-SK, Yellowknife-NT, Inuvik, NT). Using this variety of geographic sources will allow us to assess if different populations...


Tariuq Community-based Monitoring Program
Principal Investigator: Cobb, Don
Licenced Year(s): 2003
Summary: The objective of this study is to conduct index gillnetting during the open water season in order to understand species abundance and health of fish from selected locations in the Mackenzie estuary. This study is part of the Tariuq program, which was in...


Sable and Two-Rock Lake Fish-Out
Principal Investigator: Armstrong, Allison
Licenced Year(s): 2002 2001
Summary: The objective of the fish-out is to provide scientifically defensible data to: (1) quantify fish production, fish habitat and productivity of the intermediate trophic levels (primary and secondary producers); (2) establish linkages between fish habitat and fish productivity in Sable and Two-Rock Lakes; (3) establish a reference database through which comparisons among lakes can be conducted; and (...


Analysis of Natural Thinning Processes in Mixed Species Forests.
Principal Investigator: Osawa, Akira
Licenced Year(s): 2000
Summary: The main objective of the proposed research is to collect extensive data of tree size and stand density from mixed forests of Jack pine and quaking aspen in Wood Buffalo National Park and to examine theoretically the patterns of quantitative forest development with special reference to the phenomenon of 'natural thinning' in even-aged forests. The research team consisting of forest ecologists will...


Temporal Variability of Stable Carbon and Nitrogen within the Food Webs of Wood Buffalo National Park
Principal Investigator: Sotiropoulos, Maria
Licenced Year(s): 2000
Summary: The extensive wetland complex in Wood Buffalo National Park (WBNP) is composed of a mosaic of shallow ponds that are unique in Canada. They are also the nesting grounds of the last migratory population of Whooping Cranes. Water, organic matter, aquatic plants and small aquatic life forms will be sampled from ponds just outside the nesting area and 0.5 km from the highway. The research team will ...


The Effectiveness of a Diversion Channel in Providing Fish Habitat in NWT Barrenlands
Principal Investigator: Jones, Nicholas
Licenced Year(s): 2001 2000 1999
Summary: Recently BHP Diamonds Canada has "dewatered" a number of lakes and created a diversion channel to re-route water around two open pit mines. The purpose of this study is to compare the effectiveness of the diversion canal as habitat before and after it is enhanced with fish habitat structures and also in relation to natural streams in the area. In early spring Arctic grayling will be captured in we...


Sachs Harbour Benthic Communities.
Principal Investigator: Siferd, Tim
Licenced Year(s): 2000 1999
Summary: The objective of this study is to determine population size or growth rate and recruiment levels for clams and other benthic resources in Sachs Harbour, Blue Fox Harbour, and Sea Otter Harbour. Sampling for the project will be conducted from the vessel Tucho Mariner and an additional Coast Guard launch. Equipment/sampling devices for the project include an underwater camera system, QTC view sea...


Genetic Diversity in the Biota of Arctic Lakes
Principal Investigator: Hebert, Paul
Licenced Year(s): 1997
Summary: Our research will involve the survey of zooplankton communities in lakes and ponds of the Mackenzie Delta area (Inuvialuit private lands). Samples will be collected by either wading in ponds or by towing at net behind a float equipped helicopter. Samples will be frozen in liquid nitrogen, and subsequently examined for genetic variation. Our work aims to establish the species diversity of zoopla...


Demography and Management of the Wrangel Island - Banks Island Metapopulation of Lesser Snow Geese.
Principal Investigator: Cooch, Evan
Licenced Year(s): 1995
Summary: The researchers will capture and band moulting Lesser Snow Geese in the Egg and Big River valleys on Banks Island. Flightless geese will be herded into large holding pens. Each bird will be measured, weighed and banded. A sample of birds will be swabbed and bled to determine the presence of avian cholera. These birds will be fitted with radio collars. Various methods of productivity will be r...


Grizzly Bear Research
Principal Investigator: Clarkson, Peter
Licenced Year(s): 1993
Summary: The researcher will conduct surveys to determine bear population estimates as well as sex and age distributions for the grizzly bear population in the Brock and Hornaday Rivers area. Licence issued for use of Inuvik Research Centre....


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