Browsing Biology by Title
Now showing items 100-119 of 228
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Intraguild interactions and large-scale population patterns
(2009-09)Competitive interactions, including interference and intraguild predation, occur in many aquatic food webs and influence large-scale patterns of abundance, especially in lentic habitats. In a study of small coastal streams ... -
Invasion-mediated shifts in the macrobenthic assemblage of a rocky subtidal ecosystem
(2011)We tracked changes in community composition that occurred with state shifts in the rocky subtidal ecosystem in Nova Scotia, Canada, from 1992 to 2008. At the beginning of our study, a dense aggregation of sea urchins was ... -
Invertebrate predation and lotic prey communities: Evaluation of in situ enclosure/exclosure experiments
(1984)The influence of the stonefly Kogotus nonus on prey communities was assessed by varying the predator density within small enclosures in a first-order stream in southwestern Alberta. Experimental containers with natural ... -
Isolation and sequence of cDNA clones coding for a member of the family of high mobility group proteins (HMG-T) in trout and analysis of HMG-T-mRNA's in trout tissues
(Oxford University Press, Oxford Journals, Great Clarendon Street, 1985-07)No abstract available. -
Jeffrey Hutchings CV
(2013-08-29) -
Jellyfish Support High Energy Intake of Leatherback Sea Turtles (Dermochelys coriacea): Video Evidence from Animal-Borne Cameras
(2012-03)The endangered leatherback turtle is a large, highly migratory marine predator that inexplicably relies upon a diet of low-energy gelatinous zooplankton. The location of these prey may be predictable at large oceanographic ... -
Jonathan M.Wright CV
(2013-08-29) -
Karl Popper’s organon and the world’s fisheries: fish stock assessment as a pseudoscience, an inductivism that can bear no fruit
(2006)Recent long term historical studies of commercial fisheries have pointed to a well established pattern of overfishing. Under the principle of transference – what is true in logic is true in psychology and scientific method ... -
Killer storms: North Atlantic hurricanes and disease outbreaks in sea urchins
(2010-11)An increase in the incidence of disease in various marine organisms over the past few decades has been linked to ocean climate change. In Nova Scotia, Canada, mass mortalities of sea urchins, due to an amoebic disease, ... -
Landscapes of the Five Bridge Lakes Wilderness Area: A Natural History
(Woodens River Watershed Environmental Organization, 2010-02-17)The Five Bridge Lakes Wilderness Area (FBLWA) lies about 20 kilometers west of downtown Halifax, Nova Scotia. It encompasses 8,626 hectares hectares of Crown land located in the centre of the Chebucto Peninsula on Nova ... -
Large-Scale Absence of Sharks on Reefs in the Greater-Caribbean: A Footprint of Human Pressures
(2010-08)Background: In recent decades, large pelagic and coastal shark populations have declined dramatically with increased fishing; however, the status of sharks in other systems such as coral reefs remains largely unassessed ... -
Larval cardiorespiratory ontogeny and allometry in Xenopus laevis
(1995)Very little is known about the early development of cardiorespiratory regulatory mechanisms in newly hatched amphibian larvae. We tested whether early cardiovascular responses to hypoxia reflect local flow regulation in ... -
Life-history correlates of extinction risk and recovery potential
(2012-06)Extinction risk is inversely associated with maximum per capita population growth rate (r(max)). However, this parameter is not known for most threatened species, underscoring the value in identifying correlates of r(max) ... -
Linking movement, diving, and habitat to foraging success in a large marine predator
(2006-12)Establishing where and when predators forage is essential to understanding trophic interactions, yet foraging behavior remains poorly understood in large marine carnivores. We investigated the factors leading to foraging ... -
Long-term change in a meso-predator community in response to prolonged and heterogeneous human impact
(2013-01)Sharks and rays' abundance can decline considerably with fishing. Community changes, however, are more complex because of species interactions, and variable vulnerability and exposure to fishing. We evaluated long-term ... -
Maintenance of Positive Diversity-Stability Relations along a Gradient of Environmental Stress
(2010-04)Background: Environmental stress is widely considered to be an important factor in regulating whether changes in diversity will affect the functioning and stability of ecological communities. Methodology/Principal Findings: ... -
Male and female pollination success in a deceptive orchid, a selection study
(1998-06)We carried out phenotypic selection analyses to assess the relative importance of several Horal traits, as well as microhabitat, in determining both male and female pollination success in a nonrewarding orchid (Cypripedium ... -
Marine Resources of Kouchibouguac National Park
(Applied Ocean Systems Ltd., Dartmouth, Nova Scotia, Canada, 1976-04-15)Kouchibouguac National Park is located on the east coast of New Brunswick, Canada It includes 25 kilometers of barrier islands/sand dunes which shelter three lagoons and face the Gulf of St. Lawrence on their seaward side. ... -
Marine Resources of Kouchibouguac National Park: Extended Summary
(Applied Ocean Systems Ltd., Dartmouth, Nova Scotia, 1976-04-15)Kouchibouguac National Park is located on the east coast of New Brunswick, Canada It includes 25 kilometers of barrier islands/sand dunes which shelter three lagoons and face the Gulf of St. Lawrence on their seaward side. ... -
Mechanisms Influencing the Timing and Success of Reproductive Migration in a Capital Breeding Semelparous Fish Species, the Sockeye Salmon
(University of Chicago Press, P.O. Box 37005 Chicago IL 60637 USA, [mailto:help@press.uchicago.edu], [URL:http://www.journals.uchicago.edu/], 2009)Two populations of homing sockeye salmon (Oncorhynchus nerka; Adams and Chilko) were intercepted in the marine approaches around the northern and southern ends of Vancouver Island (British Columbia, Canada) en route to ...