1092 record(s) found with the tag "biology" (multi-year projects are grouped):
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Understanding the potential impact of metals in aquatic systems.
Principal Investigator: McGeer, Jim
Licenced Year(s): 2017
Summary: The objectives of this research are to evaluate the relative sensitivity of northern aquatic invertebrates and northern ecosystems in comparison to southern species and environments. The focus of comparisons is in relation to the toxicity of metals. Three types of sample collections are proposed. These would be done at selected sites along the Ingraham Trail (highway 4) east of Yellowknife. The...

Genetic assessment of Inconnu (Stenodus leucichthys) in Great Slave Lake, Northwest Territories
Principal Investigator: Tallman, Ross F
Licenced Year(s): 2017
Summary: The objective is to use Inconnu genetic samples to differentiate the inconnu populations residing in Great Slave Lake. If inconnu are philopatric (return to their natal spawning grounds) than each river should consist of a genetically distinct population. Methods include using gill nets to capture between 30 to 50 Inconnu per location (along Buffalo River, Buffalo Lake and Taltson River). Nets...

Temperature and oxygen concentrations in Dolomite (Airport) Lake
Principal Investigator: Lord, Sarah
Licenced Year(s): 2017
Summary: The purpose of this study is to directly measure temperature and dissolved oxygen concentrations in Airport Lake throughout the year, and to find out if low oxygen levels are limiting the growth rate of lake trout population in this lake. Repeated sampling at the same locations on the lake during fall, winter, spring, and summer will show whether oxygen levels are adequate for optimal lake trout t...

Benthic Macroinvertebrate Monitoring (Slave and Hay Rivers)
Principal Investigator: Levasseur, Annie
Licenced Year(s): 2017
Summary: The objectives of this project is to establish a baseline for benthic invertebrates’ community structure and composition in the transboundary reaches of the Slave and Hay Rivers and to track their status and conditions over time to assess ecosystem health and provide an early warning of change or stress in the environment. The monitoring plan involves selecting and sampling several 500m long re...

The ecology and paleoecology of benthic macroinvertebrates in the Mackenzie Delta region
Principal Investigator: Quinlan, Roberto
Licenced Year(s): 2017 2016 2015 2014 2013
Summary: The objectives of our study are to 1) establish the importance of lake connectivity in determining the community composition and species richness of the invertebrate community of a lake, and the contribution of lakes of differing connectivity to the regional diversity of the Mackenzie Delta, 2) characterize the response of invertebrate communities to changing peak flood levels to allow prediction ...

Under The Pole - Innovative Underwater Exploration
Principal Investigator: Bihan-Poudec, Anne-Claire
Licenced Year(s): 2017
Summary: This survey aims at discovering bioluminescent and biofluorescent species in Polar Regions (namely the Arctic), assessing and understanding the potential functions of the phenomena. Marcel Koken and his team hope to discover bioluminescent or biofluorescent species in the Arctic mesophotic zone. As the mission consists of an exploration of an under-studied part of the ocean, the scientific team...

Drivers of lichen diversity at different latitudes
Principal Investigator: Scharnagl, Klara
Licenced Year(s): 2017
Summary: The objectives at Scotty Creek in the Northwest Territories of Canada is to get a high latitudinal point for the field sampling study. Many latitudinal gradient studies overlook the boreal and tundra ecosystems, yet they are host to a rich lichen flora. The Principal Investigator (PI) will survey lichen diversity at Scotty Creek, contributing to local knowledge in addition to the understanding of ...

Sanguez Lake Fish Down Study
Principal Investigator: Low, George
Licenced Year(s): 2017
Summary: Objectives of this research are to: 1) establish a population estimate of walleye in Sanguez Lake; 2) establish an additional estimate of fish mercury concentrations in walleye and pike. In 2013, mean mercury concentration in walleye was 0.71 mg/kg wet weight, and in pike was 1.09 mg/kg wet weight; 3)reduce the number of walleye and pike adults such that predation on walleye recruits decreases....

Horn River Creel Survey and Stock Study
Principal Investigator: Low, George
Licenced Year(s): 2017
Summary: It is the objective of this project to collect information on the walleye population from the Horn River which can be used for managing the fishery and possibly changing the regulations. In order to reach this objective the following goals have been set out: 1. to collect population structure and spawning information by setting gill nets of varying mesh size and biologically sampling a portion of...

Global monograph of the Hymenogastraceae family
Principal Investigator: Davies, Linda L
Licenced Year(s): 2017
Summary: The objectives of this project are to study the diversity and distribution of the genus Hebeloma at the global level; and, to assemble a more complete phylogeny of Hebeloma and of the family Hymenogastraceae that will in turn further understanding of the evolution and development of characters in this family. The research team will survey local areas to look for basidiomes of the genus Hebeloma...