Sentences with phrase «ocean productivity»

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 impacts of anthropogenic climate change include decreased ocean productivity, altered food web dynamics, reduced abundance of habitat - forming species, shifting species distributions, and a greater incidence of disease.

It is based on the concept that iron is a critical nutrient for primary ocean productivity, and oceanic iron deposition has been in decline for decades.

As one example of this the major oxygen minimum zones of the tropical oceans are expanding which may have significant implications for future nutrient cycles and hence ocean productivity.

«Although many factors affect population redistribution and recovery, no doubt the murres at Prince Island are benefiting from relatively cool summertime waters, increased ocean productivity, and changes in forage - fish availability.»

The team — from Southampton, the University of Cape Town and the Norwegian Institute for Air Research — conducted three research voyages in 2010 investigating ocean productivity in the area affected by ash from Eyjafjallajökull.

Climate change is thus inseparable from ocean change, and our ability to understand these changes relies heavily on our understanding of ocean ecosystems and, more specifically, the role of iron in regulating ocean productivity and hence the global carbon cycle and climate.

That coincided with declines in ocean productivity such as reduced growth of plankton, declines of some fish and birds and expanded ranges of some species such as jumbo squid, perhaps as they searched for scarce food or followed favorable temperatures.

«This clearly showed that overall ocean productivity decreases when the climate warms,» said lead author Michael Behrenfeld of Oregon State University.

This mega-shift in ocean productivity from south to north over the next three to four decades will leave those most reliant on fish for both food and income high and dry.

These changes will be regionally specific, as predicted species distributional shifts and changes in ocean productivity due to climate change are expected to result in increases in maximum catch potential in high latitudinal regions but decreases in the tropics.

Since, once again, the Greenland ice sheet is melting as a response to global warming, humans are as a consequence altering ocean productivity.

Hence, natural or man - made iron replenishment in the ocean may restore primary ocean productivity which in turn may reduce oceanic fish mortality and lead to improvements in fisheries.

There is also ample evidence that lower pH does not inhibit photosynthesis or lower ocean productivity (Mackey 2015).

They depend on predictable climate for their breeding cycles and need high ocean productivity for the krill and fish they survive on.

21 March, 2018 — Runaway climate change will alter the pattern of ocean productivity and circulation and play perhaps irreversible havoc with fish catches.

The impacts of anthropogenic climate change so far include decreased ocean productivity, altered food web dynamics, reduced abundance of habitat - forming species, shifting species distributions, and a greater incidence of disease.

Diatoms are also associated with explosive increases in ocean productivity, so it should be no surprise that the earliest appearance and evolution of whales also coincides with increased ACC upwelling and the evolution of diatoms.

In many parts of the ocean the productivity of phytoplankton — microscopic plants at the base of the marine food chain — is limited by the availability of dissolved iron.

There is another important angle to the ocean productivity issue that you might consider — there is a very real danger that the satellites that provide climate - research quality observations of this kind will not be available in the near future due to limited budgets and other priorities.

The aim of the C - SIDE working group is to reconstruct changes in sea - ice extent in the Southern Ocean for the past 130,000 years, reconstruct how sea - ice cover responded to global cooling as the Earth entered a glacial cycle, and to better understand how sea - ice cover may have influenced nutrient cycling, ocean productivity, air - sea gas exchange, and circulation dynamics.