Sentences with phrase «plankton production»

There's a lot of attention being given to what happens when the plankton production («primary production» — the first step where photosynthesis occurs).

The relatively low levels of sea urchins, and good plankton production, means that this area still has thriving habitats and good biodiversity compared to many of the other dive sites in the Canaries.

But when a giant shelf collapses — as Larsen A and B did in 1995 and 2002 — solar - powered plankton production ramps up, and scientists think it could jump - start a complex food web of diverse marine life.

Not exact matches

«Under climate change, the Pacific Islands region is projected to become warmer, less oxygenated, more acidic, and have lower production of plankton that form the base of oceanic food webs,» said lead author Rebecca Asch, Nereus Program alumnus and Assistant Professor at East Carolina University.

More fresh water in the surface water layers makes it harder for the nutrient - rich bottom water to rise to the upper layers where the sunlight ensures the production of plankton algae in summer.

Plankton algae form the basis for all life in the sea and a lower production of algae will result in a lower production of fish.

Both pollution and increasing ultraviolet light streaming through ozone holes could reduce production of plankton.

«Different teams investigate the development and productivity of the plankton community, changes in the food web, in the material and energy cycles and in the production of climate - active gases», Riebesell describes the wide range of scientific questions addressed in this mesocosm campaign.

His position: • No evidence of increasing lake clarity as a result of secchi measurements since 1946 • The interplay of stratification and plankton productivity are not «straightforward» • Challenges O'Reilly's assumption on the correlation of wind and productivity - the highest production is on the end of the lake with the lowest winds • A strong caution using diatoms as the productivity proxy (it is one of two different lake modes) • No ability to link climate change to productivity changes • More productivity from river than allowed for in Nature Geopscience article • Externally derived nutrients control productivity for a quarter of the year • Strong indications of overfishing • No evidence of a climate and fishery production link • The current productivity of the lake is within the expected range • Doesn't challenge recent temp increase but cites temperature records do not show a temperature rise in the last century • Phytoplankton chlorophylla seems to have not materially changed from the 1970s to 1990s • Disputes O'Reilly's and Verbug's claims of increased warming and decreased productivity • Rejects Verburgs contention that changes in phytoplankton biomass (biovolume), in dissolved silica and in transparency support the idea of declining productivity.

These include increased production of nitrous oxide and methane, unintended changes in the plankton that could result in production of toxic blooms and effects on the ocean food chain.

The simulated ocean acidification led to unexpectedly large changes in the production activity of the plankton with considerable impacts on the release of climate - relevant gases and in turnover rates of important elements in the seawater.

Mesocosm experiments found that when atmospheric CO2 was increased, primary production by plankton community consumed 39 % more DIC.

But some algae and plankton blooms can turn dangerous, either through the production of chemical toxins or by severely depleting the oxygen supply in the ocean and creating «dead zones» that suffocate marine creatures.