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Fatty acid profiles in the gonads of the sea urchin Strongylocentrotus droebachiensis on natural algal diets
(2008)
We examined fatty acid (FA) compositions of gonads of the green sea urchin Strongylocentrotus
droebachiensis collected from a grazing aggregation (front) at the edge of a kelp bed and from
barrens dominated by coralline ...
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 ...
Procedural effects of prey tethering experiments: Predation of juvenile scallops by crabs and sea stars
(1994)
This study examines the effects of an experimental tethering procedure often used in field
predation experiments. In laboratory experiments, juvenile sea scallops Placopecten magellanicus,
either free or tethered, were ...
Temporal and spatial variability in settlement and recruitment of echinoderms in kelp beds and barrens in Nova Scotia
(2000-10)
Settlement and recruitment of echinoderms were measured in 2 adjacent habitats: a kelp bed
(Laminaria longicruris) and an echinoid (Strongylocentrotus droebachiensis)-dominated barren ground
at each of 2 sites in the ...
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 ...
Role of early post-settlement mortality in recruitment of benthic marine invertebrates
(1997-08)
Newly settled invertebrates usually are subject to high rates of mortality (Type III
survivorship). Therefore, knowledge of early post-settlement events is critical in determining if
and when patterns of abundance and ...
Spatial and temporal variability of patterns of colonization by mussels (Mytilus trossulus, M-edulis) on a wave-exposed rocky shore
(1998)
Colonization rates of mussels (Mytilus trossulus and M. edulis) were measured on natural
substrata in tidepools and on emergent rock in recently ice-scoured and non-scoured regions of a
rocky shore near Halifax, Nova ...
Non-Occurrence of Free-Living Paramoeba-Invadens in Water and Sediments of Halifax Harbour Nova Scotia Canada
(1989)
Seawater and sediment samples from various sites in or near Halifax Harbour were cultured for
Paramoeba as were tissues of the natural sea urchin host Stronglyocentrotus droebachiensis sampled
from Halifax Harbour. An ...
Predicting wave dislodgment of mussels: variation in attachment strength with body size, habitat, and season
(2001)
Breaking waves impose large hydrodynamic forces which may dislodge mussels and other organisms
living on exposed rocky shores. We examined the effect of variation in attachment strength with
size, habitat and season on ...