Temporal and Spatial Changes in Benthic Mollusc (bivalves and Gastropods) Communities in Inner Frobisher Bay, Nunavut, Baffin Island Over Fifty Years PDF Download
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Author: Erin Coleen Herder Publisher: ISBN: Category : Languages : en Pages :
Book Description
Benthic fauna are a crucial part of the marine ecosystem providing many ecosystem services. Unfortunately, Arctic coastal marine environments are under tremendous pressure from changing climate conditions and it is becoming increasingly important to understand community changes occurring in these environments. Long-term ecological studies in the Canadian Arctic are rare, however, Frobisher Bay provides a unique opportunity to study long-term change in the marine benthos because historical benthic community datasets exist for this region. We focused on the molluscs as indicators of long-term change by comparing community temporal and spatial changes between 1967-1976 and 2016. Significant changes in community composition were observed between these two time periods and shifts in functional trait characteristics were also observed. These changes coincided with long-term environmental change in the region. Our results highlight the need for long-term systematic sampling which is fundamental to our understanding of Arctic marine ecosystems and for identifying long-term ecosystem change.
Author: Erin Coleen Herder Publisher: ISBN: Category : Languages : en Pages :
Book Description
Benthic fauna are a crucial part of the marine ecosystem providing many ecosystem services. Unfortunately, Arctic coastal marine environments are under tremendous pressure from changing climate conditions and it is becoming increasingly important to understand community changes occurring in these environments. Long-term ecological studies in the Canadian Arctic are rare, however, Frobisher Bay provides a unique opportunity to study long-term change in the marine benthos because historical benthic community datasets exist for this region. We focused on the molluscs as indicators of long-term change by comparing community temporal and spatial changes between 1967-1976 and 2016. Significant changes in community composition were observed between these two time periods and shifts in functional trait characteristics were also observed. These changes coincided with long-term environmental change in the region. Our results highlight the need for long-term systematic sampling which is fundamental to our understanding of Arctic marine ecosystems and for identifying long-term ecosystem change.
Author: Stephen D. Cairns Publisher: French National Museum Natural History ISBN: 9782856537671 Category : Benthic animals Languages : en Pages : 0
Book Description
Tropical Deep-Sea Benthos is a series dedicated to the inventory and description of the deep-sea fauna of the world, with special emphasis on their most extensive--but remote and least-explored--habitats: the Indo-West Pacific. Growing out of marine expeditions undertaken by the French National Museum of Natural History and the Institut de Recherche pour le Développement, the series continues to present many new, strange, and sometimes colorful invertebrates. The present volume presents results from recent expeditions within the New Caledonian Exclusive Economic Zone, reporting ninety-eight species (including fifty-seven new species) of corals from the Stylasteridae family and one new calcified species of hydrozoa from the family Hydractiniidae. Including numerous seamounts, submarine ridges, and small islands, New Caledonia's deep-sea benthos are ideal habitat for stylasterids, making it the most species-rich marine region in the world for this taxon.
Author: Patricia M. Glibert Publisher: Springer ISBN: 3319700693 Category : Science Languages : en Pages : 460
Book Description
Harmful algal blooms (HABs) - blooms that cause fish kills, contaminate seafood with toxins, or cause human or ecological health impacts and harm to local economies - are occurring more often, in more places and lasting longer than in past decades. This expansion is primarily the result of human activities, through increased nutrient inputs and various aspects of climate change. The Global Ecology and Oceanography of Harmful Algal Blooms (GEOHAB) programme promoted international collaboration to understand HAB population dynamics in various oceanographic regimes and to improve the prediction of HABs. This volume introduces readers to the overarching framework of the GEOHAB programme, factors contributing to the global expansion of harmful algal blooms, the complexities of HABs in different habitats, and the forward-looking issues to be tackled by the next generation of GEOHAB, GlobalHAB. The programme brought together an international team of contributing scientists and ecosystem managers, and its outcomes will greatly benefit the international research community.
Author: Harold A. Mooney Publisher: ISBN: Category : Science Languages : en Pages : 304
Book Description
Incorporates the results of the program on ecosystem experiments conducted by the Scientific Committee of Problems of the Environment. Features research papers submitted at Mitwitz, Germany and Washington, D.C. The objective of this compilation of papers is to explore the potential of ecosystem experimentation as a tool for understanding and predicting changes in the biosphere. Areas investigated include deforestation, desertification, El Nino phenomenon, acid rain, watersheds, wetlands, aquatic and climatic changes.
Author: Lucy Wilson Publisher: Cambridge Scholars Publishing ISBN: Category : Nature Languages : en Pages : 302
Book Description
Reconstructing Human-Landscape Interactions demonstrates the high quality of work presented at the first Developing International Geoarchaeology conference (DIG 2005), held in Saint John, New Brunswick, Canada, and exemplifies the over-riding theme of this discipline. People have always used the landscape in many ways: as a place to live, as a place to grow crops, as a source of natural resources. Those actions leave their traces. The characteristics of the landscape constrain which activities are possible, just as social and cultural habits condition peopleâ (TM)s connection with the environment. Geoarchaeology is about finding the traces of these interactions, and using them to reconstruct how people in the past behaved in their environmental context. The material covered in the proceedings ranges from broad themes of climate change and landscape use, to more specific subjects such as river avulsion and the use of tidal ponds. The papers move us from the land to the coastal margin and back onto land to examine particular techniques. The final paper leads us beyond archaeology and points out that geoarchaeological data must contribute to the debate about the sustainability of present-day land-use practices: a fitting challenge to take us into the future.
Author: Matthew H. Nitecki Publisher: Springer Science & Business Media ISBN: 1461546915 Category : Science Languages : en Pages : 249
Book Description
Receptaculitids are extinct high-level fossils that provide a window into the history of life. After the discovery and analysis of a deposit of phosphatized receptaculitids on the Baltic Sea island of Öland, the authors conclude that receptaculitids possess an attribute not found in any other group of organisms, living or fossil.
Author: Shanice Nicole Publisher: ISBN: 9781999058838 Category : Languages : en Pages : 32
Book Description
Dear Black Girls is a letter to all Black girls. Every day poet and educator Shanice Nicole is reminded of how special Black girls are and of how lucky she is to be one. Illustrations by Kezna Dalz support the book's message that no two Black girls are the same but they are all special--that to be a Black girl is a true gift. In this celebratory poem, Kezna and Shanice remind young readers that despite differences, they all deserve to be loved just the way they are.
Author: J. A. Dowdeswell Publisher: ISBN: Category : Science Languages : en Pages : 440
Book Description
This volume examines the processes responsible for sedimentation in modern glaciomarine environments, and how such modern studies can be used as analogues in the interpretation of ancient glaciomarine sequences. Sediments released from glaciers grounded in tidewater, floating ice shelves, ice tongues, icebergs and sea ice form complex sequences governed by glaciological, oceanographic, sedimentary and biogenic controls. Ten per cent of the world's oceans and epicontinental seas contain such active glacimarine environments, but during Cenozoic glacial periods this area was doubled. This book will, therefore, be of relevance to all scientists concerned with high and middle latitude marine environments. The early chapters are concerned largely with processes of sedimentation in modern glacimarine environments; examples are drawn from Alaska, the Canadian Arctic, Svalbard and Antarctica. Studies of ancient sequences, both Cenozoic and pre-Cenozoic, from the Barents Sea, Greenland, Sweden, Alaska and the northwest European continental shelf, form the latter part of the book.
Author: Erin Coleen Herder
Author: Erin Coleen Herder
Author: Stephen D. Cairns
Author: Patricia M. Glibert
Author: Harold A. Mooney
Author: D. A. Hodgson
Author: Lucy Wilson
Author: Matthew H. Nitecki
Author: Sir Roderick Impey Murchison
Author: Shanice Nicole
Author: J. A. Dowdeswell