Sentences with phrase «iron fertilization by»

According to Ingall, removal of iron by diatom - dominated phytoplankton communities may dampen the intended outcome of enhanced carbon uptake through iron fertilization by reducing the productivity of other phytoplankton, which take up carbon dioxide more efficiently.

Not exact matches

Possible mechanisms include (iv) fertilization of phytoplankton growth in the Southern Ocean by increased deposition of iron - containing dust from the atmosphere after being carried by winds from colder, drier continental areas, and a subsequent redistribution of limiting nutrients; (v) an increase in the whole ocean nutrient content (e.g., through input of material exposed on shelves or nitrogen fixation); and (vi) an increase in the ratio between carbon and other nutrients assimilated in organic material, resulting in a higher carbon export per unit of limiting nutrient exported.

Examples of papers confirming that fertilization of the oceans by iron could have played a role in ice ages: Moore et al. (2000); Kohfeld et al. (2005); Abelmann et al. (2006); Martínez - Garcia et al. (2011).

This paper considers the practicalities, opportunities and threats associated with one of the earliest proposed carbon - removal techniques: large - scale ocean fertilization, achieved by adding iron or other nutrients to surface waters.

From recent article «Iron fertilization enhanced net community production but not downward particle flux during the Southern Ocean iron fertilization experiment LOHAFEX», by P. Martin, M. Rutgers van der Loeff, N. Cassar, P. Vandromme, F. d'Ovidio, L. Stemmann, R. Rengarajan,... Continue readiIron fertilization enhanced net community production but not downward particle flux during the Southern Ocean iron fertilization experiment LOHAFEX», by P. Martin, M. Rutgers van der Loeff, N. Cassar, P. Vandromme, F. d'Ovidio, L. Stemmann, R. Rengarajan,... Continue readiiron fertilization experiment LOHAFEX», by P. Martin, M. Rutgers van der Loeff, N. Cassar, P. Vandromme, F. d'Ovidio, L. Stemmann, R. Rengarajan,... Continue reading →

This result sheds new light on the effect of long - term fertilization by iron and macronutrients on carbon sequestration, suggesting that changes in iron supply from belowâ as invoked in some palaeoclimatic and future climate change scenarios11â may have a more significant effect on atmospheric carbon dioxide concentrations than previously thought.

EFFECT OF NATURAL IRON FERTILIZATION ON CARBON SEQUESTRATION IN THE SOUTHERN OCEAN Nature, Vol 446 26 April 2007 doi: 10.1038 / nature05700 The efficiency of fertilization, defined as the ratio of the carbon export to the amount of iron supplied, was at least ten times higher than previous estimates from short - term blooms induced by iron - addition experimeIRON FERTILIZATION ON CARBON SEQUESTRATION IN THE SOUTHERN OCEAN Nature, Vol 446 26 April 2007 doi: 10.1038 / nature05700 The efficiency of fertilization, defined as the ratio of the carbon export to the amount of iron supplied, was at least ten times higher than previous estimates from short - term blooms induced by iron - addition experimeiron supplied, was at least ten times higher than previous estimates from short - term blooms induced by iron - addition experimeiron - addition experiments.

WWF condemns iron fertilization scheme to fight global warming WWF condemns iron fertilization scheme to fight global warming mongabay.com June 28, 2007 Environmental group WWF condemned a scheme by Planktos,...

By the late 1990s, a number of entrepreneurs had made the inevitable connection between «iron fertilization» and the new profit - driven trading markets.

GreenSea Venture, the company started by Markels, remains very focused on iron fertilization as a sequestration strategy.

This study closely follows a September Ocean Iron Fertilization symposium at the Woods Hole Oceanographic Institution (WHOI) attended by leading scientists, international lawyers, policy makers, and concerned representatives from government, business, academia and environmental organizations.

A main indirect effect is the fertilization of ocean phytoplankton production by dust - mitigated input of iron to the ocean surface layer (6, 7).

Here we took a different approach by seeking and applying dust deposition observations from hotspots for dust radiative and iron fertilization forcing: NH subtropical latitudes and the Southern Ocean.

This allows us to scale the two records by their respective interglacial levels, combine them to better resolve the Southern Ocean, and use the combined record as our proxy for glacial / interglacial iron fertilization forcing.

Far riskier is intentional acceleration of carbon dioxide removal by enhancing the biological uptake in the ocean through iron fertilization.

Therefore it's my opinion that the not - so - extreme decline from April to July 2010, coupled with the higher - than - usual April value, coupled with the changes (both trend and fluctuation) in both the size of and the timing of the annual cycle, are such that there's insufficient evidence to conclude that the Eyjafjallajökull eruption caused a noticeable change in atmospheric CO2, whether by emissions from the eruption, the lack of emissions from air traffic, or iron fertilization of the oceans.

In addition to altering marine food webs, iron fertilization could produce greenhouse gases more potent than carbon dioxide, such as nitrous oxide and methane, or block sunlight needed by deep coral reefs.