Browsing Biology, Department of by Title
Now showing items 21-40 of 406
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Assessing Biological Recovery of Cladocera from Sudbury-Area Lakes Using Paleolimnology
(2014-04-28)Lakes near Sudbury, Ontario, experienced widespread acidification and metal-contamination beginning in the late-19th century. These stressors caused extreme damage to regional aquatic systems and their catchments, with ... -
Assessing changes in pollen assemblage and charcoal accumulation during known changes in climate from c. 5,400 to 3,300 Years Before Present at the forest-prairie ecotone in Alberta, Canada
(2009-02-02)The ecotone between aspen parkland and mixed-grass prairie in mid-eastern Alberta is a climatically-sensitive area that has been subject to periods of enhanced aridity occurring at multi-decadal to centennial-scale cycles ... -
Assessing Diatom Shifts in Embayments and Lakes in and Around Georgian Bay (Lake Huron) Using Paleolimnology
(2016-04-22)Freshwater ecosystems in Ontario are affected by a growing number of multiple stressors, with climate change often acting as a “threat multiplier”. Diatom-based paleolimnological approaches are used to provide the much ... -
Assessing long-term changes in chironomid assemblages linked to past fluctuations in Leach’s Storm-Petrel populations on islands in the Western Atlantic Ocean
Nutrient loading is an important factor that can indirectly deplete dissolved oxygen concentrations in lakes. In environments where seabirds nest and breed, guano is a prominent source of nutrients that can eutrophy ... -
Assessing long-term environmental trends in Ontario lakes that support Lake Trout (Salvelinus namaycush)
Oxygenated habitats for Lake Trout (Salvelinus namaycush) are projected to deteriorate with climate warming. However, a paucity of long-term limnological monitoring data impedes the ability to determine if concentrations ... -
Assessing strategies for managing drug resistance in treatment of infectious disease: insights from queueing theory
(2013-07-03)Antimicrobials have been instrumental in the treatment of infectious disease: responsible for worldwide infection control and reductions in disease-induced morbidity, and mortality. However, in every case where new ... -
Assessing the biotic and abiotic factors influencing the distribution and intensity of cyanobacterial harmful algal blooms in Dog Lake, South Frontenac using UAV imaging and eDNA
Cyanobacterial harmful algal blooms (CHABs) deteriorate water quality and cause widespread economic and ecological damage to aquatic ecosystems. Efforts in mitigating and monitoring CHABs face challenges from their complex ... -
Assessing the chemical and biological recovery of Killarney Provincial Park lakes from historical acidification
Since the mid 1900s, acidification has impacted water quality and threatened the ecological integrity of thousands of lakes and streams across Eastern North America and Europe. After the implementation of industrial emission ... -
Assessing the Relative Influence of Nitrogen Deposition and Regional Warming on Scaled Chrysophytes in Lakes Downwind of the Athabasca Oil Sands Region, Canada
(2016-04-27)Freshwater systems in Boreal regions are potentially threatened by a number of environmental stressors, such as point and non-point source pollutants from industrial development and climate change. In northeast Alberta, ... -
Assessing the Role of Declining Calcium in Biological Recovery on Zooplankton in Historically Acidified Lakes
(2015-05-28)Throughout much of the 20th century, industrial emissions caused the widespread acidification of thousands of lakes in North America and Europe. Acidification has led to unprecedented damage on zooplankton communities, ... -
Assessing the spatial and temporal patterns of total mercury δ 15N and δ13C in yellow perch and their prey items from a contaminated site, St. Lawrence River, Cornwall, ON
(2007-08-02)As a result of the legacy of industrial contamination over the last century, areas of sediment deposition in the St. Lawrence River at Cornwall, ON, contain high concentrations of mercury (Hg). The popular sport-fish ... -
Assessing the use of Viviparus georgianus snails as a means for biomanipulation of cyanobacterial species Microcystis aeruginosa
Cyanobacterial blooms can produce toxins which can be fatal to organisms, including humans. Biomanipulation of cyanobacterial harmful algal blooms (CHABs) aims to proactively prevent their formation by maintaining continuous ... -
Assessing Thule Inuit impacts on High Arctic lakes and ponds : a paleolimnological approach
(2008-01-03)Until recently it has been widely believed that significant anthropogenic influences on the environment began in Canada following the onset of European colonization. However, our paleolimnological data indicate that ... -
Assessment of Long-Term Changes in Water Quality from Halifax Region Lakes (Nova Scotia, Canada) Using Paleolimnological Techniques
(2009-09-10)The current study developed a paleolimnological approach to assess changes in diatom assemblages (class Bacillariophyceae) from present-day lake sediments in comparison to those deposited before significant human impact ... -
An Assessment of Population Genetic Structure in Guillemots (Cepphus)
Understanding how evolutionary forces shape population genetic structure is a principal goal of evolutionary geneticists. Guillemots (Aves: Charadriiformes: Alcidae: Cepphus) provide useful systems for investigating ... -
Assessment of the Effects of Habitat, Harvest and Community Interactions on the Abundance of Walleye Sander Vitreus in Inland Lakes Throughout Ontario
(2012-09-25)Walleye (Sander vitreus) is an important species to the recreational fishery throughout Ontario. Fish community interactions between walleye and other species are rarely considered when establishing management targets ... -
Author-Directed Peer-Review (ADPR) Form
(2011-01-10) -
Autophosphorylation of the Dual-Specificity Calcium-Dependent Protein Kinase RcCDPK1 From Castor Oil Seeds
Phosphoenolpyruvate carboxylase (PEPC) is a tightly-regulated enzyme that plays essential roles in central plant metabolism, particularly in the replenishment of tricarboxylic acid cycle intermediates withdrawn for ... -
Bacterial low temperature survival, ice nucleation proteins and ice-associating polymers
(2010-01-29)Microorganisms have developed ways to preserve cellular functions under low temperature conditions using a variety of biochemical adaptations including the modification of ice formation. In order to conduct a limited survey ... -
The behaviour of largemouth bass in Lake Opinicon, Ontario: A biological perspective for the evaluation of Murphy Bay fish sanctuary
(2010-04-01)This study provides a biological perspective on the potential of using year-round sanctuaries to protect largemouth bass (Micropterus salmoides). Although the Rideau Lakes bass sanctuaries have been present for more than ...