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Now showing items 51-60 of 81
Reflections on the failure of traditional fisheries management
(2016-06-03)
A traditional fisheries management or fish stock assessment takes a Lamarckian-like instructive view of fisheries science. Its invalid inductive arguments have no problem solving capacity and are responsible for the collapse ...
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 ...
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 ...
Spatial and temporal variation in DMSP content in the invasive seaweed Codium fragile ssp fragile: effects of temperature, light and grazing
(2010)
The methionine-derived secondary metabolite dimethylsulfoniopropionate (DMSP) is believed to
function in cryoprotection, defense against herbivory, and reduction of oxidative stress in some
seaweeds. The ability to produce ...
Seasonal and Age-Dependent Dietary Partitioning between the Great Black-Backed and Herring Gulls
(2011-11)
Studies of seabird diets may reveal subtle ways in which sympatric species partition resources to facilitate co-existence. We studied the variability and partitioning of diets between the Herring (Larus argentatus) and ...
How Many Species Are There on Earth and in the Ocean?
(2011-08)
The diversity of life is one of the most striking aspects of our planet; hence knowing how many species inhabit Earth is among the most fundamental questions in science. Yet the answer to this question remains enigmatic, ...
Spatial dynamics, ecological thresholds and phase shifts: modelling grazer aggregation and gap formation in kelp beds
(2010)
On the Atlantic coast of Nova Scotia, transitions between alternative states of the subtidal
ecosystem, kelp beds and sea urchin barrens, occur on a decadal scale. To explore the process of
urchin aggregation within kelp ...
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 ...
The Biodiversity of the Mediterranean Sea: Estimates, Patterns, and Threats
(2010-08)
The Mediterranean Sea is a marine biodiversity hot spot. Here we combined an extensive literature analysis with expert opinions to update publicly available estimates of major taxa in this marine ecosystem and to revise ...
Food-Web Structure of Seagrass Communities across Different Spatial Scales and Human Impacts
(2011-07)
Seagrass beds provide important habitat for a wide range of marine species but are threatened by multiple human impacts in coastal waters. Although seagrass communities have been well-studied in the field, a quantification ...