Browsing Faculty of Science by Title
Now showing items 2128-2147 of 2571
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Space-based constraints on the production of nitric oxide by lightning
(2007-05)No abstract available. -
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Spatial and Temporal Mapping of Radiofrequency Fields
(2011-03)The objective of this study was to explore the spatial and temporal distribution of radiofrequency (RF) fields due to wireless device transmissions in areas of maximum human exposure in Halifax, Nova Scotia. These RF fields ... -
Spatial and Temporal Variability of Macrobenthic Communities in Tidepools on a Rocky Shore in Nova-Scotia, Canada
(1994-02)Spatial and temporal patterns in the distribution and abundance of macroalgae and macrofauna were measured in 4 pools in each of 3 intertidal zones (mid, high and splash) on a rocky shore near Halifax, Nova Scotia, Canada. ... -
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 ... -
Spatial and Temporal Variability of Tidepool Hyperbenthos on a Rocky Shore in Nova-Scotia, Canada
(1994-05)We examined the distribution and abundance of the hyperbenthos in tidepools on a rocky shore, near Halifax, Nova Scotia, Canada, at approximately monthly intervals between March and November 1991, and between April and ... -
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 ... -
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 ... -
Spatial heterogeneity of phytoplankton assemblages in tidepools: Effects of abiotic and biotic factors
(1996-01)In any ecological system, the factors that regulate the abundance of species vary with spatial scale; therefore, the sources of spatial variability should be described. We examined different sources of variability in the ... -
Spatial pattern of the shrub layer across the subarctic landscape of Churchill Manitoba
(2014-03)The shrub layer provides important habitat for wildlife throughout the harsh environment of the arctic tundra landscape. Studies have shown that the shrub layer is expanding in tundra landscapes and changing habitat ... -
Spatial Protection for Porbeagle Sharks, Lamna nasus, in the Northwest Atlantic: The Road to Recovery? [graduate project].
(2016)Sharks have dominated the seas as apex predators for more than 400 million years, but today they are being fished by humans at an unprecedented rate. Many of the biological characteristics of sharks make them particularly ... -
Spatial variation in right whale food, Calanus finmarchicus, in the Bay of Fundy
(2011)No abstract available. -
Spatiotemporal Patterns in Nest Box Occupancy by Tree Swallows Across North America
(2012-06)Data from the North American Breeding Bird Survey (BBS) suggest that populations of aerial insectivorous birds are declining, particularly in northeastern regions of the continent, and particularly since the mid-1980s. ... -
Spatiotemporal variations of fCO(2) in the North Sea
(2010)Data from two Voluntary Observing Ship (VOS) (2005-2007) augmented with data subsets from ten cruises (1987-2005) were used to investigate the spatiotemporal variations of the CO2 fugacity in seawater (fCO(2)(sw)) in the ... -
Special Conformal Killing Vector Space-Times and Symmetry Inheritance
(1989-11)No abstract available. -
The spectral effects of clouds on solar irradiance
(1998-12)Knowledge of the spectral attenuation associated with clouds is important for accurate estimates of natural irradiance at the Earth's surface. We compare spectral measurements of visible downwelling irradiance, under varying ... -
Spectral line shape of the P(2) transition in CO-Ar: Uncorrelated ab initio calculation
(2002-12)No abstract available. -
Spectrally weighted transparency in models of water-column photosynthesis and photoinhibition by ultraviolet radiation
(2004)We present a simple method for describing the influence of variable attenuation of spectral irradiance, Kd(lambda), on water-column photosynthesis and its inhibition by ultraviolet radiation (UV). The approach is based on ... -
Spectroscopic Characterisation of 250um-Selected Hyper-Luminous Star Forming Galaxies
(2010-09-28)We present near-infrared spectroscopic observations from VLT ISAAC of thirteen 250\mu m-luminous galaxies in the CDF-S, seven of which have confirmed redshifts which average to = 2.0 \pm 0.4. Another two sources of the 13 ... -
A spectroscopic survey of EC4, an Extended Cluster in Andromeda's halo
(2009-03-26)We present a spectroscopic survey of candidate red giant branch stars in the extended star cluster, EC4, discovered in the halo of M31 from our CFHT/MegaCam survey, overlapping the tidal streams, Stream Cp and Stream Cr. ...