Browsing Biology by Title
Now showing items 35-54 of 228
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Contemporary effective population and metapopulation size (Ne and meta-Ne): comparison among three salmonids inhabiting a fragmented system and differing in gene flow and its asymmetries
(2013-03)We estimated local and metapopulation effective sizes ((N) over cap (e) and meta-(N) over cap (e)) for three coexisting salmonid species (Salmo salar, Salvelinus fontinalis, Salvelinus alpinus) inhabiting a freshwater ... -
Contemporary nuclear and mitochondrial genetic clines in a north temperate estuarine fish reflect Pleistocene vicariance
(2011)Contemporary genetic spatial structure in north temperate marine species is likely the culmination of multiple vicariant and dispersive cycles. Here we evaluate spatial genetic structure in an estuarine fish, rainbow ... -
Correlations among Fertility Components Can Maintain Mixed Mating in Plants
(2009-01)Classical models studying the evolution of self-fertilization in plants conclude that only complete selfing and complete outcrossing are evolutionarily stable. In contrast with this prediction, 42% of seed-plant species ... -
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Costs of locomotion and vertic dynamics of cephalopods and fish
(2000-12)The world's oceans are three-dimensional habitats that support high diversity and biomass. Because the densities of most of the constituents of life are greater than that of seawater, planktonic and pelagic organisms had ... -
Critical thinking through the eyes of Richard Paul and Karl Popper
(2014-10-08)This 1993 workshop marks the beginning of my new logical or metaphysical research program on the application of Karl Popper’s non-inductive theory of method to the management of the World’s commercial fisheries. The view, ... -
Daniel E. Ruzzante CV
(2013-08-29) -
Demise of the garden of Acadia
(DVL Publishing Inc., Liverpool, Nova Scotia, 1981-07)In the late 1970s, plans were being developed for construction of a tidal power barrage at the mouth of the Annapolis River. Much of the land by the river in that area was dyked and was used by farmers for grazing and ... -
Demonstration of the deposition and modification of dietary fatty acids in pinniped blubber using radiolabelled precursors
(2004-07)Radioisotopes are commonly used to study the in vivo metabolism and deposition of dietary fatty acids in adipose tissue. The application of this approach to pinnipeds is problematic because of their large mass and blubber ... -
Detrital production in Nova Scotian kelp beds: patterns and processes
(2011)Connectivity via the transport of detrital material from areas of high to low productivity may be an important determinant of secondary productivity and biodiversity in receiving communities. On the Atlantic coast of ... -
Development of the blood and muscle oxygen stores in gray seals (Halichoerus grypus): Implications for juvenile diving capacity and the necessity of a terrestrial postweaning fast
(2005-07)To successfully transition from nursing to foraging, phocid seal pups must develop adequate diving physiology within the limited time between birth and their first independent foraging trip to sea. We studied the postpartum ... -
Diazotrophic bacteria respond to Saharan dust additions
(2012)Three bioassay experiments were performed to study the effects of nutrient and Saharan dust additions on natural diazotrophic communities in the tropical North Atlantic Ocean. Samples for nucleic acid analysis were collected ... -
Disease outbreaks associated with recent hurricanes cause mass mortality of sea urchins in Nova Scotia
(2010)Field observations and laboratory experiments support the hypothesis that disease-induced mass mortality of the sea urchin Strongylocentrotus droebachiensis can be associated with hurricane events that introduce a ... -
Distinguishing input controls from ouput controls in Atlantic Canada's fisheries: explaining the decline and collapse of Newfoundland's Atlantic cod stocks
(2013-03-14)The lobster and groundfish fisheries of Atlantic Canada have been managed in very different ways. The Atlantic lobster fishery has been managed by input controls in which regulations have been developed by a posteriori ... -
The dystroglycan complex is necessary for stabilization of acetylcholine receptor clusters at neuromuscular junctions and formation of the synaptic basement membrane
(2001-02)The dystrophin-associated protein (DAP) complex spans the sarcolemmal membrane linking the cytoskeleton to the basement membrane surrounding each myofiber. Defects in the DAP complex have been linked previously to a ... -
Ecological Assessment of the Plant Communities of the Williams Lake Backlands
(The Williams Lake Conservation Company, 2014-02-12)The Williams Lake Backlands (WLB), covering approximately 200 ha, are the larger, undeveloped part of the Williams Lake Watershed which includes Colpitt Lake and Williams Lake. The WLB are part of "Purcell's Cove Backlands" ... -
The Ecology of Atlantic Cod (Gadus morhua) in Canadian Arctic Lakes
(2011-06)The range of limnological conditions that support Atlantic cod populations in meromictic Arctic lakes is known to be relatively restricted. The degree to which differences in these features, particularly in the availability ... -
The ecology of transition
(COGnition (Eco-Farm & Garden), 1988)A popular account of scientific research on the processes involved in the transition of a mixed laying hen-grain farm In the Annapolis Valley, Nova Scotia from conventional to organic management. -
Effect of a low-fat diet on body composition and blubber fatty acids of captive juvenile harp seals (Phoca groenlandica)
(2000-01)We investigated the effects of a change from a high-fat diet to a low-fat diet of differing fatty acid (FA) composition on the body composition and blubber FA of five captive juvenile harp seals. Seals that had been ... -
Effect of Boundary Layers on Cutaneous Gas Exchange
(1990)Boundary layers may offer significant resistance to cutaneous oxygen uptake by amphibians in water. This hypothesis was tested by measuring resistance to oxygen uptake as a function of water velocity in bullfrogs submerged ...