Download or read book Status and Conservation of Eelgrass Zostera Marina in Eastern Canada written by Alan R. Hanson and published by . This book was released on 2004 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Although eelgrass (Zostera marina) has been widely recognized as an important component of coastal ecosystems in Eastern Canada, the workshop held 17-18 December 2003, in Sackville, New Brunswick, was the first meeting of its kind to bring together people interested in the status and conservation of eelgrass in this region. The workshop had three main themes: mapping and monitoring changes in eelgrass distribution and abundance; the importance of eelgrass to coastal ecosystems; and causes of eelgrass declines"--Summary.
Download or read book Status of Eelgrass Zostera Marina on the North Atlantic Coast February 1938 written by Clarence Cottam and published by . This book was released on 1938 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eelgrass Zostera Marina Ecosystems in Eastern Canada and Their Importance to Migratory Waterfowl written by Mélanie-Louise Leblanc and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Seagrasses are marine flowering plants that create some of the most productive coastal habitats globally and play a key role in the functioning of nearshore ecosystems. The most common seagrass genus in Canada is Zostera and the species Zostera marina (eelgrass) is the predominant seagrass in intertidal and subtidal shoreline zones along the Atlantic, Pacific, and eastern James Bay coasts. Eelgrass has specific habitat requirements, with growth and productivity optimized within particular ranges of salinity, temperature, light availability, and nutrient concentrations. Large eelgrass meadows can impact nearshore environments by filtering the water column, stabilizing sediment, buffering shorelines, and providing habitat for various marine and coastal species, including commercially important species like Atlantic cod (Gadus morhua) and lobster (Homarus americanus). Eelgrass is also a vital food resource for migratory waterfowl, notably Canada Geese (Branta canadensis), Pacific Black Brant (Branta bernicla nigricans), and Atlantic Brant (Branta bernicla hrota). Despite their ecological importance, seagrasses are among the most vulnerable coastal ecosystems on the planet. The global loss of seagrass has been linked to a variety of human activities, including pollution, invasive species, and catchment modifications. There is an urgent need to improve monitoring of seagrass responses to environmental change, better document the importance of seagrass meadows to species reliant on them for food and habitat, and advance effective management and conservation of seagrass ecosystems. In this thesis, I investigated the spatiotemporal dynamics of eelgrass meadows in eastern Canada and the importance of eelgrass as a food source for migratory waterfowl, using remote sensing data, long-term monitoring data (biomass, density, and cover), and field observations. In Chapter 3, I used a novel cost-efficient approach for satellite imaging time-series to examine changes in eelgrass distribution and abundance from 1984 to 2017 in a wetland of international importance in northeastern New Brunswick. With minimal ground truth data, the novel time-series approach revealed a slow and steady decline in eelgrass abundance in some areas of the estuary. In contrast, other areas were characterized by highly dynamic shifts in eelgrass cover over time. I demonstrated how time-series analysis can be used to identify potential drivers of seagrass change and the benefits of including time-series analysis in seagrass monitoring programs. In Chapter 4, I contributed to advancing knowledge of migratory waterfowl stopover behaviour by examining the influence of eelgrass and human activities on Canada Geese habitat selection. Combining field observations of Canada Geese and the eelgrass distribution maps produced in Chapter 3, I found that Canada Geese selected areas with high eelgrass availability during periods of low human disturbance, which emphasized the importance of eelgrass as a food source during the fall migration. However, higher levels of human disturbance led to a redistribution of geese away from dense eelgrass meadows. In Chapter 5, I presented new insights into the recent and current state of eelgrass along the eastern coast of James Bay after a drastic and large-scale decline in the late 1990s. By aggregating, synthesizing, and analyzing long-term monitoring data and current surveys, spanning 1982 - 2020, I provided the first quantitative evidence that changes in eelgrass biomass in northeastern James Bay may reflect synergistic impacts of climate change and altered freshwater discharge regimes. Overall, this thesis advances understanding of how temperate and subarctic Zostera marina ecosystems and associated fauna respond to coastal development and climate change"--
Download or read book Landscapes and Landforms of Eastern Canada written by Olav Slaymaker and published by Springer Nature. This book was released on 2020-02-13 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: This critical book focuses on the geomorphological landscapes of eastern Canada and provides a companion volume to “Landscapes and Landforms of Western Canada” (2017). There are a number of unique characteristics of eastern Canada’s landscapes, notably its magnificent coastlines, the extraordinary variety and extent of wetlands, the huge Great Lakes-St. Lawrence basin, the high incidence of meteorite craters, the spectacular Niagara Falls, urban karst in Montreal and Ottawa, youthful, glaciated karst in Ontario, Newfoundland, Quebec and Nova Scotia, the ubiquitous permafrost terrain of Nunavut, Labrador and northern Quebec and the magnificent arctic fjords and glaciers. Looking at coastlines, the tidal extremes of the Bay of Fundy are world renowned; the structural complexity of the island of Newfoundland is less well known, but produces an astounding variety of coastlines in close succession; the arctic fjordlands of Baffin and Ellesmere islands and the extravagant raised beaches of Hudson Bay bear comparison with the classic fjords of Norway and the Baltic Sea raised beaches. As for wetlands, there are distinctive Arctic, Subarctic, Boreal, Eastern Temperate and Atlantic wetlands, and their extent is second only to those of Russia. In the Hudson and James Bay regions, between 75-100% of the terrestrial surface is comprised of wetlands. One of North America’s largest river basins, the Great Lakes-St. Lawrence basin, has its source in Minnesota, straddles the USA-Canada border and debouches into Quebec as the St. Lawrence River and evolves through its estuary into the Gulf of St. Lawrence, a journey of almost 5,000 km. As far as meteorite craters are concerned, 10% of the world’s total are located in eastern Canada, including some of the largest and most complex landforms. They are preserved preferentially in the ancient Shield terrain of Quebec. Finally, the three million km2 of permafrost controlled relief in eastern Canada serves as a reminder of the vulnerability of eastern Canada’s landscapes to climate change. Effects of warming are expressed through thawing of the permafrost, disruption of transportation corridors and urban construction problems, ever-present geomorphic hazards.
Download or read book Use of Eelgrass Habitats by Fish in Eastern Canada written by V. Joseph and published by . This book was released on 2013 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this document is to review the literature on the ecological function of eelgrass (Zostera marina L.) to fish communities in eastern Canada for the purpose of designating eelgrass as an Ecologically Significant Species (ESS). Relatively few studies have investigated the function of eelgrass habitats in eastern Canada compared to the USA or Australia. Therefore, this review also draws from other eelgrass or seagrass studies around the world to demonstrate the use of eelgrass habitats by fish. Eelgrass is a common marine angiosperm that is found in sheltered bays and coastal waters in eastern Canada. Eelgrass meadows provide structural complexity to the nearshore underwater landscape and like seagrass habitats, elsewhere in the world are known to support high densities and diversity of fishes and other aquatic organisms in comparison to unvegetated sandy or muddy bottoms.--Document.
Download or read book Status of Eelgrass Beds on the East Coast of James Bay written by Marie-Hélène Dickey and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report is intended to provide an objective summary of information available in published papers and unpublished reports, considering factors related to declines observed in the extent of beds of eelgrass, Zostera marina, along the east coast of James Bay, Québec. It was written to support Environment Canada's commitment to better understand the causes of changes in the coastal ecosystems of James Bay, and their implications for birds and other wildlife and for the residents of coastal communities"--Preface, page 2.
Download or read book Interactions in the Marine Benthos written by Stephen J. Hawkins and published by Cambridge University Press. This book was released on 2019-08-29 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive account of how abiotic and biotic interactions shape patterns of coastal marine biodiversity and ecosystem processes globally.
Download or read book Inventory of Eelgrass Zostera Marina L in San Francisco San Pablo Bay written by Sandy Wyllie-Echeverria and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status of Eelgrass Zostera Marina on the North Atlantic Coast January 1937 1 Classic Reprint written by John J. Lynch and published by Forgotten Books. This book was released on 2018-09-09 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Status of Eelgrass (Zostera Marina) On the North Atlantic Coast, January 1937/1 Present Situation Regarding Eelgrass (zostera marina) Information on the history and extent of disappearance, effects of the disappearance, and past periods of scarcity is contained in the former paper. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Status of Eelgrass Zostera Marina on the North Atlantic Coast February 1938 written by Clarence Cottam and published by . This book was released on 1938 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status of Eelgrass Zostera Marina on the North Atlantic Coast January 1937 written by John J. Lynch and published by . This book was released on 1937 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Status of Eelgrass Zostera Marina on the North Atlantic Coast January 1937 written by and published by . This book was released on 1937 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Restoration and Conservation Proceedings of the North American Wildlife Conference Called by President Franklin D Roosevelt February 3 7 1936 written by United States. Congress. Senate. Special Committee on Conservation of Wild Life Resources and published by . This book was released on 1936 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution and Condition of Eelgrass Zostera Marina in the Historical Goldmining Region of Goldboro Nova Scotia written by Bénédikte Vercaemer and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Nearshore marine construction activities often involve projects conducted directly in or adjacent to eelgrass beds and can have detrimental effects on eelgrass health, through physical destruction of beds, smothering of plants by sediment, and light reduction from turbidity. A liquefied natural gas (LNG) marine terminal is proposed to be constructed near Goldboro in Isaacs Harbour on the Eastern shore of Nova Scotia in an area where sediments are contaminated with heavy metals from historical goldmining operations. We conducted a pre-impact assessment of the eelgrass beds in Isaacs Harbour and in adjacent contaminated and non-contaminated harbours. We used underwater video to precisely map the eelgrass bed in the direct construction footprint in Isaacs Harbour and to identify eelgrass presence or absence in the nearby region. The overall condition of eelgrass plants in the surveyed area fell within the range of healthy plant characteristics (morphometrics and carbohydrates reserves) seen elsewhere along the Atlantic coast. However, a few stations displayed high arsenic and mercury contamination in sediments, which translated in some cases to high contamination in eelgrass rhizomes and leaves. There would be significant risk of impact on benthic habitat and contamination of marine biota from resuspension of sediments during a construction and operation of a ship terminal in Isaacs Harbour. This pre-impact assessment will allow DFO to assess the LNG terminal construction proposal and develop appropriate mitigation and monitoring procedures. Collected data will also be used for habitat-forming species distribution modeling to inform marine spatial and conservation planning"--Abstract, page iv.
Download or read book Coastal Conservation written by Brooke Maslo and published by Cambridge University Press. This book was released on 2014-03-27 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: An exploration of the biodiversity status of coastal habitats worldwide, emphasising their importance to society, major threats and conservation challenges.
Download or read book Ecology and Conservation of the Diamond backed Terrapin written by Willem M. Roosenburg and published by Johns Hopkins University Press. This book was released on 2019-01-08 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Walsh, Thane Wibbels, Will Williams, Roger C. Wood
