Sentences with phrase «marine ecosystem processes»

ESM 254 - Coastal Marine Ecosystem Processes [4 units] Lenihan Examination of physical, chemical and geological processes in coastal ecosystems, including estuaries, that are influenced by human activities.

Not exact matches

«The concept of «maintaining ecological function» refers to the balance of ecological processes necessary for the reef ecosystem as a whole to persist, but perhaps in a different form,» a spokesperson for Great Barrier Reef Marine Park Authority explained, «noting the composition and structure may differ from what is currently seen today.»

A complex set of chemical processes dissolves that CO2 and turns it into carbonic acid, which dissolves shells and coral, creating a cascade effect that could disrupt entire marine ecosystems.

However, this process also increases the acidity of seawater and can affect the health of marine organisms and the ocean ecosystem.

«From the scientific perspective, this study suggests that ecosystem and species - level migration processes affecting population dynamics in marine environments such as the Gulf of Mexico may be operating at a larger scale than typically appreciated or examined,» Jue said.

This session examined the biogeochemical processes that are likely to affect the evolution of the Earth system over the coming decades, with a focus on the dynamics of marine and terrestrial ecosystems and the development of improved understanding through (a) fieldwork and laboratory experiments, (b) development of new observational datasets, both modern and palaeo, and (c) simulations using numerical models.

A set of chemical processes dissolves that CO2 and turns it into carbonic acid and sets off a complex changes to the chemistry of seawater, which dissolves shells and coral and creates a cascade effect that could disrupt entire marine ecosystems.

Research focused on estuarine and coastal dynamics and the impact that the resulting physical, chemical and biological processes have on the marine ecosystem; field programs to quantify physical transport and mixing to elucidate biogeochemical processes.

Five thematic areas have been identified which cover the range of processes from the base of the marine food chain to the community and ecosystem level, and of mechanisms from the sub-cellular to the whole organism level.

The researchers say the processes identified in the cave will help them to better understand what is happening in sunken ecosystems around the globe, including parts of the ocean that are currently being stripped of oxygen — a major concern to marine scientists working in the field.

Consequences of change and variability in sea ice on marine ecosystem and biogeochemical processes during the 2007 — 2008 Canadian International Polar Year program.

Yvan Simard is a biological oceanographer using active and passive acoustics to study the marine mammals and their ecosystem, the multi-scale links with the oceanographic forcing and biological processes, and the anthropogenic imprint on the underwater soundscapes of their essential habitats, at the Maurice - Lamontagne Institute of Fisheries and Oceans Canada and the associated research Chair at the Marine Sciences Institute of the University of Québec at Rimouski, Québec, Cmarine mammals and their ecosystem, the multi-scale links with the oceanographic forcing and biological processes, and the anthropogenic imprint on the underwater soundscapes of their essential habitats, at the Maurice - Lamontagne Institute of Fisheries and Oceans Canada and the associated research Chair at the Marine Sciences Institute of the University of Québec at Rimouski, Québec, CMarine Sciences Institute of the University of Québec at Rimouski, Québec, Canada.

Wallace S. Broecker: Preface 1: Jean - Pierre Gattuso and Lina Hansson: Ocean Acidification: Background and History 2: Richard E. Zeebe and Andy Ridgwell: Past Changes of Ocean Carbonate Chemistry 3: James C. Orr: Recent and Future Changes in Ocean Carbonate Chemistry 4: Andrew H. Knoll and Woodward W. Fischer: Skeletons and Ocean Chemistry: The Long View 5: Markus G. Weinbauer, Xavier Mari, and Jean - Pierre Gattuso: Effect of Ocean Acidification on the Diversity and Activity of Heterotrophic Marine Microorganisms 6: Ulf Riebesell and Philippe D. Tortell: Effects of Ocean Acidification on Pelagic Organisms and Ecosystems 7: Andreas J. Andersson, Fred T. Mackenzie, and Jean - Pierre Gattuso: Effects of Ocean Acidification on Benthic Processes, Organisms, and Ecosystems 8: Hans - Otto Pörtner, Magda Gutowska, Atsushi Ishimatsu, Magnus Lucassen, Frank Melzner, and Brad Seibel: Effects of Ocean Acidification on Nektonic Organisms 9: Stephen Widdicombe, John I. Spicer, and Vassilis Kitidis: Effects of Ocean Acidification on Sediment Fauna 10: James P. Barry, Stephen Widdicombe, and Jason M. Hall - Spencer: Effects of Ocean Acidification on Marine Biodiversity and Ecosystem Function 11: Frances Hopkins, Philip Nightingale, and Peter Liss: Effects of Ocean Acidification on the Marine Source of Atmospherically - Active Trace Gases 12: Marion Gehlen, Nicolas Gruber, Reidun Gangstø, Laurent Bopp, and Andreas Oschlies: Biogeochemical Consequences of Ocean Acidification and Feedback to the Earth System 13: Carol Turley and Kelvin Boot: The Ocean Acidification Challenges Facing Science and Society 14: Fortunat Joos, Thomas L. Frölicher, Marco Steinacher, and Gian - Kasper Plattner: Impact of Climate Change Mitigation on Ocean Acidification Projections 15: Jean - Pierre Gattuso, Jelle Bijma, Marion Gehlen, Ulf Riebesell, and Carol Turley: Ocean Acidification: Knowns, Unknowns, and Perspectives Index

«The concept of «maintaining ecological function» refers to the balance of ecological processes necessary for the reef ecosystem as a whole to persist, but perhaps in a different form, noting the composition and structure may differ from what is currently seen today,» a spokeswoman for the Great Barrier Reef Marine Park Authority explained.

Hopefully, this will assist future generations of Maldvians and tourists to continue to enjoy their idyllic moments of peace on the shoreline while this unique country grows its way out of the very real threats of global warming and sea level rise.The BioRock Process (mineral accretion) is a revolutionary technology used to grow and preserve marine ecosystems.

The Humboldt Current Large Marine Ecosystem (off Chile and Peru), the Benguelan Current LME (Namibia and South Africa), the Canary Current LME (Morocco), are the other main upwelling ecosystems, all driven by similar oceanographic and atmospheric processes, all on the eastern sides of ocean basins (western sides of continents).

However, to gain a better view of biogeochemical processes and marine ecosystems on a global scale below 2000 meters, agencies and organizations must also invest in autonomous mobile technologies.

Climate plays a central role in the processes that influence marine ecosystem health and biodiversity throughout the oceans.

Ocean acidification occurs when carbon dioxide dissolves out of the atmosphere and into the ocean, where it chemically reacts and lowers the water's pH. The process is sometimes dubbed the «evil twin» of climate change because of the harmful effects it may have on marine ecosystems.

With the Canadian led IPY - CFL sampling program, new highlights on winter ecological processes and confirmation of some of the earlier observations made during previous and scarce overwintering scientific studies help to refine our understanding of the structure and functioning of the arctic marine ecosystem.

US CLIVAR is collaborating with the ocean carbon and biogeochemistry science community to increase observations and understanding of the coupled physical / biogeochemical processes that maintain the marine ecosystem and oceanic sources and sinks of carbon and predict how they will evolve in response to climate variability and change.

However, these models do not yet include many processes and reservoirs that may be important, such as peat, buried carbon in permafrost soils, wild fires, ocean eddies and the response of marine ecosystems to ocean acidification.

This new concept of anthropogenic impacts on seawater pH formulated here accommodates the broad range of mechanisms involved in the anthropogenic forcing of pH in coastal ecosystems, including changes in land use, nutrient inputs, ecosystem structure and net metabolism, and emissions of gases to the atmosphere affecting the carbon system and associated pH. The new paradigm is applicable across marine systems, from open - ocean and ocean - dominated coastal systems, where OA by anthropogenic CO2 is the dominant mechanism of anthropogenic impacts on marine pH, to coastal ecosystems where a range of natural and anthropogenic processes may operate to affect pH.

Accordingly, there are three main vectors of anthropogenic impacts on marine pH: (1) emissions of CO2, and other gases affecting marine pH, to the atmosphere; (2) perturbation of watershed processes affecting the inputs of nutrients, organic and inorganic carbon, acids and carbonate alkalinity to the ocean; and (3) impacts on ecosystem structure (Table 1).

The workshop will consist of keynote lectures from these different disciplines, and then sessions will be structured around particular applications sectors including: water resources, long - term risk management, marine ecosystems, extreme events, coastal processes and public lands.