Sentences with phrase «marine ecosystem productivity»

Impacts of large - scale and persistent changes in the MOC are likely to include changes to marine ecosystem productivity, fisheries, ocean carbon dioxide uptake, oceanic oxygen concentrations and terrestrial vegetation [Working Group I Fourth Assessment 10.3, 10.7; Working Group II Fourth Assessment 12.6, 19.3].

Not exact matches

Submissions at the hearing revealed significant uncertainties on the effects of the project on primary productivity in the water ecosystems, impacts on endangered marine mammals, and impacts on existing indigenous and commercial fishing interests.

The measures «do not address the fundamental implication of the very serious decline in commercial fishing productivity and the damage that present fishing practices and other activities are doing to the marine ecosystem,» Ms Lucas added, commenting on a report by the Royal Commission on Environmental Pollution 2004.

Many marine biologists think of the world's biggest alga as the keystone species of its ecosystem, not only in terms of its structure — a huge forestlike environment under the sea — but also in terms of its tremendous productivity in supplying food for the near - shore ecosystem.

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.

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.

More ominously, the scientists warn that, «If we do nothing, endocrine disruptors may not only impact on human health but all the ecosystems including those on which we depend — if we compromise soil productivity and sustainability of our agricultural systems or cause imbalance in marine and freshwater ecosystems through damage to populations of top predators, ultimately, we threaten our own survival.»

The shift in the PDO can have significant implications for global climate, affecting Pacific and Atlantic hurricane activity, droughts and flooding around the Pacific basin, the productivity of marine ecosystems, and global land temperature patterns.

Sea ice is critical for polar marine ecosystems in at least two important ways: (1) it provides a habitat for photosynthetic algae and nursery ground for invertebrates and fish during times when the water column does not support phytoplankton growth; and (2) as the ice melts, releasing organisms into the surface water [3], a shallow mixed layer forms which fosters large ice - edge blooms important to the overall productivity of polar seas.

The Large Marine Ecosystem (LME) approach recommends a baseline of information at the LME management scale on changing states of productivity, fish and fisheries, pollution and ecosystem health, and socioeconomic and governance coEcosystem (LME) approach recommends a baseline of information at the LME management scale on changing states of productivity, fish and fisheries, pollution and ecosystem health, and socioeconomic and governance coecosystem health, and socioeconomic and governance conditions.

There may be changes in nutrient availability, biological productivity, and the structure of marine ecosystems from the bottom of the food chain to the top.

Phytoplankton biomass production sets the carrying capacity of marine ecosystems and is highly correlated with commercial fishery landings, making ZSD a valuable indicator of a fishery's productivity.

Changes in marine primary productivity in response to climate change remain the single biggest uncertainty in predicting the magnitude and direction of future changes in fisheries and marine ecosystems (low confidence).

Overall, climate change will lead to large - scale shifts in the patterns of marine productivity, biodiversity, community composition and ecosystem structure.

Marine systems: Marine systems Due to projected climate change by the mid 21st century and beyond, global marine - species redistribution and marine - biodiversity reduction in sensitive regions will challenge the sustained provision of fisheries productivity and other ecosystem services (high confidMarine systems: Marine systems Due to projected climate change by the mid 21st century and beyond, global marine - species redistribution and marine - biodiversity reduction in sensitive regions will challenge the sustained provision of fisheries productivity and other ecosystem services (high confidMarine systems Due to projected climate change by the mid 21st century and beyond, global marine - species redistribution and marine - biodiversity reduction in sensitive regions will challenge the sustained provision of fisheries productivity and other ecosystem services (high confidmarine - species redistribution and marine - biodiversity reduction in sensitive regions will challenge the sustained provision of fisheries productivity and other ecosystem services (high confidmarine - biodiversity reduction in sensitive regions will challenge the sustained provision of fisheries productivity and other ecosystem services (high confidence).

One of the possible beneficial consequences of global warming might be a reduction in the extent and stability of marine ice, which would directly affect the productivity of polar ecosystems.

If these ideas hold water then it will be necessary to revisit long - cherished concepts in marine ecology that suggest that removal of higher order predators would have a beneficial effect on ecosystem productivity.