Atlantic Canada Marine Biodiversity Essay 2012

Atlantic Canada Marine Biodiversity Essay 2012-16
This study tests the hypothesis that invertebrate assemblages from intertidal mussel beds differ between wave-sheltered and wave-exposed habitats.To this aim, we surveyed exposed and sheltered sites spanning 350 km of coastline in Nova Scotia, Canada.In the twentieth century, pollution, eutrophication, species invasions and, presumably, climate change have had marked impacts on the Wadden Sea flora and fauna.

This study tests the hypothesis that invertebrate assemblages from intertidal mussel beds differ between wave-sheltered and wave-exposed habitats.

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Marine environmental history analyses the changing relationships between human societies and marine natural resources over time.

This is the first book which deals in asystematic way with the theoretical backgrounds of this discipline.

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We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services.We constructed individual food webs for each study site and cumulative webs for each province and the entire region based on presence/absence of species, an...In the coming century, life in the ocean will be confronted with a suite of environmental conditions that have no analog in human history.We then discuss the ecosystem and societal consequences of observed changes, and conclude with management implications.Human influences have intensified and multiplied over time.Shaped by natural forces since its origin 7,500 years ago, humans gradually gained dominance in influencing ecosystem structure and functioning.Here, we reconstruct the timeline of human impacts and the history of ecological changes in the Wadden Sea.Multivariate analyses revealed that the composition of invertebrate assemblages differed significantly between both habitat types.Exposed habitats supported a greater species richness, and the species that mainly explained the compositional difference between both environments were more abundant in exposed ones.Motivated by extensive field surveys and literature information, we analyzed the structural features of food webs associated with Zostera marina across 16 study sites in 3 provinces in Atlantic Canada.Our goals were to (i) quantify differences in food-web structure across local and regional scales and human impacts, (ii) assess the robustness of seagrass webs to simulated species loss, and (iii) compare food-web structure in temperate Atlantic seagrass beds with those of other aquatic ecosystems.

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