Sentences with phrase «marine ecosystem level»

Not exact matches

If the Texas company's plan for expanding its Trans Mountain pipeline linking Edmonton to Burnaby, B.C., is completed, the risk of irreparable damage to Burrard Inlet and Vancouver's entire marine ecosystem would rise to a high level.

Scientists say reserves can help marine ecosystems and people adapt to five key impacts of climate change: ocean acidification; sea - level rise; increased intensity of storms; shifts in species distribution, and decreased productivity and oxygen availability.

Sea - level rise and coral bleaching often dominate discussions about how climate change affects the ocean, but a host of more subtle — and harder to research — trends also play a role in reshaping the world's marine ecosystems.

Changing temperatures and ocean acidification, together with rising sea level and shifts in ocean productivity, will keep marine ecosystems in a state of continuous change for 100,000 years.

The centre runs research programmes in climate variability and change, the monitoring of sea levels, ocean uptake of carbon dioxide, and Antarctic marine ecosystems.

Indeed, in both marine and terrestrial ecosystems, the big surprise is that the incursion of alien species can actually increase, rather than decrease, biodiversity at a local level.

The landmark 1972 legislation recognized marine mammals as a central element of their ocean ecosystems, setting population goals based on levels that would contribute to the health and stability of those ecosystems.

«This is the highest level of endemism recorded from any marine ecosystem on Earth.»

John Beddington, professor of population biology at Imperial College, London, says that if fishing continues at today's levels, marine ecosystems will be radically altered, becoming less biologically diverse.

«There is at present too little known about how marine ecosystems function in the Arctic, let alone how they will respond to the dramatic changes in progress, to prescribe safe harvest levels for living marine resources in the U.S. Arctic,» 43 marine scientists said in a letter to the Council chair.

While algae and other microscopic plants, which form the base of the marine food chain, are vital to a healthy ecosystem, too much can cause murky water, reduce sunlight and oxygen levels, and ultimately cause harm to marine life.

Hamilton et al. (2001) suggested that the marine ancestors of Inia, subsequent to their divergence from Pontoporia, invaded freshwater ecosystems of Amazonia during eustatic sea - level highs of the middle Miocene, and evolved freshwater habits prior to the subsequent drop in eustatic sea - level late in the Neogene.

«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.

Based on the available evidence, Isthminia occupied a high trophic level in a highly productive fully marine tropical Caribbean coastal ecosystem that predated the complete formation of the Panamanian Isthmus.

Job Description: We are looking for a Master's level candidate or Postdoc with background in marine ecosystems and excellent field, modeling, communication and team - work skills to work towards the improvement of harmful algal blooms detection for user - relevant coastal water monitoring and environmental reporting based on validated Earth Observation and in situ optical data.

King crabs may soon become high - level predators in Antarctic marine ecosystems where they haven't played a role in tens of millions of years, according to a new study led by Florida Institute of Technology.

This cold water is nutrient - rich, supporting high levels of phytoplankton and zooplankton, diverse marine ecosystems, and rich fisheries.

Marine Biologist Tom Iliffe, also from Texas A&M University at Galveston, said: «Providing a model for the basic function of this globally - distributed ecosystem is an important contribution to coastal groundwater ecology and establishes a baseline for evaluating how sea level rise, seaside touristic development and other stressors will impact the viability of these lightless, food - poor systems.»

In the meantime, all that extra stored heat will cause seawater to expand, raising sea levels, and altering the ecosystems that marine plants and animals have adapted to for eons.

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.

Higher levels of chlorophyll on the continental shelf reflect enhanced net primary production within the Northeast US Large Marine Ecosystem (LME).

Understanding the potential consequences of rising ocean carbon levels and related ocean changes for marine life and ecosystems is a high priority for the ocean research community and marine resource management.

Targets industry (aquaculture, wild fisheries, tourism, etc), resource managers from all levels of government, technology developers, and scientists whose efforts advance ways to protect and enhance marine resources and the ecosystems that support them.

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.

Ocean acidification could devastate coral reefs and other marine ecosystems even if atmospheric carbon dioxide stabilizes at 450 ppm, a level well below that of many climate change forecasts, report chemical oceanographers Long Cao and Ken Caldeira of the Carnegie Institution's Department of Global Ecology in the journal Geophysical Research Letters.

But they would not be harmless either — e.g. for sea level (Levermann et al. 2005) particularly along the US east coast (Yin et al. 2009), marine ecosystems, fisheries and possibly even storminess in Europe (Woollings et al. 2012).

The proposed goals include promoting actions at all levels to address climate change, attaining conservation and sustainable use of marine resources, oceans and seas, and protecting and restoring terrestrial ecosystems and halting all biodiversity loss.

The ocean uptake of excess atmospheric carbon dioxide, the excess above preindustrial levels driven by human emissions, causes well - understood and substantial changes in seawater chemistry that can affect marine organisms and ecosystems.

Also recognizes the need for more knowledge and research on the source and fate of microplastics and their impact on biodiversity, marine ecosystems and human health, noting recent knowledge that such particles can be ingested by biota and could be transferred to higher levels in the marine food chain, causing adverse effects; 6.

The increased heat content leads to higher sea levels, melting glaciers, and stress to marine ecosystems.

They have a significant effect on water salinity, pollution, carbon and nutrient levels, sea surface temperature, and other physical properties in these regions of the ocean, and the variations they cause can, in turn, affect the well - being of marine ecosystems and climate.

Rising sea level impacts marine ecosystems by drowning some plants and animals as well as by inducing changes of parameters such as available light, salinity, and temperature.

Such sea level drops expose shallow marine ecosystems in the Pacific Islands, causing massive coral die - offs with a foul smelling tide, called taimasa (pronounced [kai» ma» sa]-RRB- by Samoans.

To establish scientific cooperation focusing on: (a) Monsoon and ocean variability, climate change and sea level variations, (b) Marine ecosystem studies, including algae blooms and (c) Coastal zone management including impact on society.

Leads opening in the ice will change the fluxes of heat and light penetration through the sea surface and the lower trophic levels of the marine ecosystem.

[2] This rise in sea levels around the world potentially affects human populations in coastal and island regions [3] and natural environments like marine ecosystems.

His numerous activities at the national and international levels include currently serving as a science adviser for the Joint Ocean Commission and as a principal investigator for PISCO (Partnership for Interdisciplinary Studies of Coastal Oceans), a long - term consortium studying marine ecosystems throughout the Pacific.

The devastating consequences climate change is already having on coral reefs is well known, but now scientists have discovered that yet another unique marine ecosystem is threatened by rising carbon dioxide levels.

Ice plays an important role in the development and sustenance of temperate to polar ecosystems because it creates conditions conducive to ice - edge primary production, which provides the primary food source in polar ecosystems; it supports the activity of organisms that ensure energy transfer from primary producers (algae and phytoplankton) to higher trophic levels (fish, marine birds, and mammals); and, as a consequence, it maintains and supports abundant biological communities.

Increase in Aquaculture Needed to Maintain Current Levels of Consumption The amount of fish currently discarded at sea (30 million tonnes annually) could sustain a 50 % increase in fish farming and aquaculture: An amount needed to maintain per capita fish consumption without increasing stress on marine ecosystems.

The researchers of this week's study compared mercury levels in fish from 1972 with those caught in 2011 to see what difference the drop in emissions may have made in marine ecosystems.

The observed effects of cryosphere reduction include modification of river regimes due to enhanced glacial melt, snowmelt advance and enhanced winter base flow; formation of thermokarst terrain and disappearance of surface lakes in thawing permafrost; decrease in potential travel days of vehicles over frozen roads in the Arctic; enhanced potential for glacier hazards and slope instability due to mechanical weakening driven by ice and permafrost melting; regional ocean freshening; sea - level rise due to glacier and ice sheet shrinkage; biotic colonisation and faunal changes in deglaciated terrain; changes in freshwater and marine ecosystems affected by lake - ice and sea - ice reduction; changes in livelihoods; reduced tourism activities related to skiing, ice climbing and scenic activities in cryospheric areas affected by degradation; and increased ease of ship transportation in the Arctic.

Sea levels will rise, flooding populations along the coastlines (where a large percentage of people live), and ocean acidification will cause marine ecosystems to decline.