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Spatial distribution of rorqual whales in the Strait of Jacques Cartier, Gulf of St. Lawrence, Quebec, CanadaDoniol-Valcroze, Thomas. January 2001 (has links)
The spatial distribution of four species of rorqual whales was studied along the north shore of the Gulf of St. Lawrence during the months of June to October from 1989 to 2000. A research effort of 6511 hours at sea yielded 849 sightings of blue whales (Balaenoptera musculus), 5291 of finback whales (Balaenoptera physalus), 3822 of humpback whales (Megaptera novaeangliae) and 6489 of minke whales (Balaenoptera acutorostrata). Spatial and behavioural data were collected at sea using inflatable boats, and Global Positioning Systems (GPS) were used to obtain accurate positions. These data were plotted and analysed using a Geographic Information System (GIS) to test the hypotheses that patterns of distribution were not random, were associated with bathymetry and reflected specific differences in habitat use. The resulting maps illustrated the clustered distribution of rorqual whales linked to sea-bottom topography, probably associated with areas of local upwelling and increased productivity. Blue and fin whales shared almost the same distribution, humpback whales were found in slightly deeper, offshore waters whereas minke whales were more abundant in shallower waters. Little attention has been given until now to local patterns of distribution in the area and such information can be useful for practical management considerations. The results emphasise the importance of scale in ecological studies of marine mammals and the need for further research using additional oceanographic parameters, in order to better understand habitat selection. Read more
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Some factors affecting stocks and landings of American plaice (Hippoglossoides platessoides F.) in the southwestern Gulf of St. Lawrence.Powles, Percival Mount. January 1964 (has links)
Little information has been published regarding the American plaice, Hippoglossoides platessoides platessoides (Fabricius), a subarctic species which is distributed from Cape Cod to Labrador. In recent years plaice has risen rapidy in commercial importance in eastern Canada. In 1940 only 3 million lb were landed compared to a total of more than 74 million lb in 1960. American plaice in 1961 made up 64 per cent by weight of the total Canadian flounder landings, excluding halibut. [...]
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A geophysical study of the Bay of Fundy and Gulf of Maine /Parrott, D. Russell January 1976 (has links)
No description available.
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Production and comparative ecology of Euphausiis in the Gulf of St. Lawrence.Berkes, Fikret January 1973 (has links)
No description available.
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The winter energy requirement of an open water channel in the Gulf of St. Lawrence : a study of the possibility of keeping an open lead in the Gulf ice, and the consequences for the energy balanceRenaud, Fabiola. January 1976 (has links)
No description available.
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Man and the North Shore : a study in environmental responseTyman, John Langton, 1935- January 1961 (has links)
“What I have tried to do in this and in all my writing on the early days of this country is what the artist does when he paints a sketch of a Canadian scene or a Canadian person. I have tried to select something that is beautiful or significant or interesting or essential to an understanding of ourselves. I have tried to tell the stories of personalities, men and women who have by their human qualities, aspirations, and activities, given substance to our history, whose loves and hates and fears and achievements have been woven into the very fabric of our Canadian consciousness. I have tried to say, as the painter says, ‘here is something I think you would like to know,’ ‘here is something that has significance’ or ‘here is something that may evoke your love or pride or indignation I as the case may be.” (IO:x) This, in very simple terms, has been my aim here - to paint a picture, or rather a series of pictures of the North Shore, past and present, from the viewpoint of the human geographer. I make no claim to be a historian, nor to have encompassed the full range of material available. Rather, I have selected from the accounts of yesteryear certain aspects which have an attraction for me personally, in the hope that these might also be of interest to others. In brief, I have attempted to write an academic treatise which will yet prove acceptable to the ‘reading public.‘ [...] / fr Read more
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Dissolved Organic Matter Cycling on the Louisiana Shelf: Implications for the Formation of HypoxiaShen, Li 2011 December 1900 (has links)
Although there has been considerable work on the role of nutrient-derived (mostly nitrate) primary production in fueling hypoxia in northern Gulf of Mexico, very little is known about the relative importance of autochthonous versus allochthonous sources of dissolved organic matter (DOM). Moreover, even less is known about the importance of dissolved organic nitrogen (DON), a critical component of DOM (along with DOC) in supporting hypoxia in this region. Most nitrogen in marine organisms exists in the form of amino acids. Changes in the spatial and temporal distribution of amino acids in the Mississippi River Plume have been shown to be important in the dynamic microbial cycling in the plume. In this study, concentrations of amino acids, DON and DOC were linked with hydrography data (e.g., DO, salinity, temperature, fluorescence) to determine how these sources of DOM are related to seasonal and diurnal changes in hypoxia on the inner Louisiana shelf. The general working hypothesis of this work was that allochthonous and autochthonous sources of DOM on the Louisiana shelf have been largely underestimated in their role in fueling hypoxia in northern Gulf of Mexico.
A positive correlation between DOC, DON and fluorescence demonstrated that the main source of both DOC and DON was likely to be in situ phytoplankton production. Surface waters in the near-field showed this relationship more than at stations to the west where a sub-surface chlorophyll peak near the pycnocline may also provide a source of DOC and DON in bottom waters. DFAA always had relatively low concentrations at all water depths, which further supports prior work which has shown rapid cycling and high consumption rate of DFAA by heterotrophic bacteria. In addition to biotic controls, selective adsorption of DFAA likely contributed to the dominance of aspartic and glutamic acids at our stations. Hypoxia was generally observed in bottom waters in both spring and summer 2010. Dissolved oxygen generally revealed a negative correlation with nitrate+nitrite concentrations. Based on other work, one possible reason for such linkages may be from NH4+ released from dissimilatory nitrate reduction to ammonium (DNRA). Another possible reason may be the high degradation of labile DOM (such as DFAA) as shown by high respiration in bottom waters in prior work by Amon and Benner (1998). Read more
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Northern, Central, Diversified, Specialized: The Archaeology of Fishing Adaptations in the Gulf of Georgia (Salish Sea), British ColumbiaBilton, David Harrison 16 July 2014 (has links)
The Coast Salish subsistence economy has been characterized by local fishing adaptations to regional ecological variability (Mitchell 1971a.) This dissertation explores the temporal depth of these adaptations in the traditional territory of the Coast Salish, the Gulf of Georgia. Many researchers have used this, Donald Mitchell’s (1971a), model to develop theories of regional cultural development. Many of these interpretations present social complexity or social inequality – a hallmark of Northwest Coast social complexity – as having developed more or less in lock-step with the specialized fishing adaptation described among the Central Coast Salish, around the Fraser River. The temporal depth of this adaptation and the “Diversified” fishing adaptations described among the Northern and Southern Coast Salish, as well as their developmental relationship, are not well understood. In exploring this problem, this study evaluates whether or not the ecological ethnographic model is representative of the archaeology of these cultural subareas. A gap in the regional dataset which corresponds with a large portion of Mitchell’s (1971a) “Northern Diversified” fishing subarea has largely presented a previous study of this type. Recently excavated sites in traditional shíshálh territory provide artifact and archaeofaunal data that fill in this gap. These data are analyzed along with existing data from the Northern subarea and from the Central Gulf of Georgia (River and Straits Fishing subareas). The results of this study significantly broaden our understanding of prehistoric Coast Salish socioeconomic diversity, and test the assumed salmon specialization on the Fraser River and its primacy the development of regional ethnographic characteristics, especially pronounced social inequality. The results also shed light on the prehistoric importance of herring, a decreasingly overlooked resource in Northwest Coast archaeological studies, and advocate for the use of fine mesh recovery for quantifying the relative importance of fish species. Read more
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Recovery and insurance issues following Hurricane Ivan in Gulf Shores, AlabamaJones, Larissa V. January 2007 (has links)
Hurricane Ivan struck the Gulf Coast in September 2004. Ivan was classified as a category five storm on the Saffir-Simpson scale of Hurricane Intensity before it made landfall in the U.S. with winds around 165 miles per hour. Its intensity dropped to a category three as it approached the Gulf Coast. Ivan damaged not only properties and businesses along the coast but inland as well. Heavy rains caused rivers and lakes to overflow their banks and tornadoes spawned by the storm struck Tennessee, Kentucky, Louisiana, and Georgia.The purpose of this research is to examine if hurricane insurance or separate endorsements adequately protects and reimburses owners for their losses and to access public and private responses to natural hazards and disaster mitigation using Gulf Shores, Alabama as a case study. Since fall 2004, many homeowners and business owners have been negotiating with their insurance companies. Owners received some help from the organizations like FEMA and the American Red Cross but these efforts were not enough to recuperate all the damages and losses. This study seeks to place the issues of insurance costs, claims and coverage in Gulf Shores, Alabama within the overall context of natural hazards research using archival sources, observation, questionnaires, and formal and informal interviews as data sources. In light of continuing migration to hurricane prone coastal areas, ever-increasing property values and insurance premiums, and the added risk of increasing hurricane frequency, this research contributes to a better understanding of the role of insurance on natural hazard mitigation and preparedness. / Department of Geography Read more
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Towards a unified system of Zakat accounting : the case of the GCC countriesAl-Utaibi, Abdullah T. M. January 1999 (has links)
No description available.
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