Sentences with phrase «biological productivity»
Biological productivity refers to the ability of living organisms, like plants and animals, to produce or create organic matter through processes such as photosynthesis or feeding. It is a measure of how efficiently an ecosystem or a specific organism can convert energy and nutrients into growth and reproduction. Full definition
The paper argues that recent rises in temperature are correlated with a loss of biological productivity in the lake, suggesting higher temperatures may be killing life.
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The instrument can be used to monitor aquatic biological productivity and marine pollution, and over land it can be used to monitor the health of vegetation.
Both locations will continue to contribute to biological productivity in contrast to the expanded deserts in many other locations.
Changes in upper - ocean biological productivity could also enhance or inhibit ocean uptake.
The finding also hints that such deep ground water may hold a previously hidden influence over the geochemistry and biological productivity of McMurdo Sound and the surrounding waters.
Diatom - rich sediments point to multiple extended periods of increased biological productivity related to less sea ice and warmer spring and summer sea surface temperatures.
The bio-availability of iron is a product of environmental conditions; through its effects on biological productivity, it is also a feedback.
This had the effect of producing intense surface upwelling of oceanic waters along the margins of the supercontinent and significantly boosting biological productivity.
Diversion of glacial meltwater from the Mississippi to the St. Lawrence was suggested by Kennett and Shackleton (1975); Johnson and McClure (1976); Ruddiman and McIntyre (1981a), p. 204 dismissed this since they saw no decrease in North Atlantic biological productivity; but later data, as explained by Broecker, supported the idea, Broecker et al. (1989).
Zhang, J., C. Ashjian, R. Campbell, V. Hill, Y.H. Spitz, and M. Steele, The great 2012 Arctic Ocean summer cyclone enhanced biological productivity on the shelves, J. Geophy.
There have been hints that there's more biological productivity in the Arctic Ocean than once suspected (perhaps helped along by climate change): In 2012, scientists reported seeing massive blooms of algae proliferating under the sea ice.
Its turbid cold waters are home to the largest fish stocks in the world: the Humboldt Current system, which runs along the Peruvian and Chilean coasts, boasts exceptional biological productivity thanks to a very intense coastal upwelling phenomenon — ascents of deep nutrient - rich waters.
The finding also suggests that researchers may be dramatically underestimating biological productivity in the Arctic, which is connected to the region's uptake of carbon dioxide.
Rising temperatures, for example, could either increase or decrease biological productivity,» Salawitch says, as well as the emission of certain less - prevalent gases that are exchanged between the air and ocean.
«This is important because iron limits biological productivity and air to sea CO2 exchange in this region.
«However, only a small part of this iron reaches the surface layers and the open ocean where biological productivity is limited by iron,» Florian Scholz explains.
Friedrich, T. (2009): Wise exploitation — a game with a higher productivity than cooperation — transforms biological productivity into economic productivity.
Intense upwelling along the west coast results in high biological productivity, which in turn supports large fish stocks, including pilchard, anchovy, hake, and rock lobster, each forming the basis for lucrative commercial fisheries.
Technology and more intensive inputs have helped expand biological productivity over the years, but that expansion has not come close to keeping pace with the rate at which population and resource demand have expanded.
In a world without human - produced pollution, biological productivity controls cloud formation and may be the lever that caused supergreenhouse episodes during the Cetaceous and Eocene, according to Penn State paleoclimatologists.
The amount of biological productivity available within the six land - use types is termed biocapacity.
The accelerating loss of topsoil is slowly but surely reducing the earth's inherent biological productivity.
They also point out that summer, «when most biological productivity occurs, is the most important season for humanity and thus the season when climate change may have its biggest impact.»
Developers are required to restore oil sand mining sites to at least the equivalent of their previous biological productivity, which involves revegetation and drainage restoration.
Eliminating these excesses and the resultant decline in the earth's biological productivity depends on a worldwide effort to restore the earth's vegetative cover.
Studying more lakes could also reveal whether their discharges of minerals affect the chemistry and biological productivity of the Southern Ocean.
That in turn affects how much light can get into the water column, which may affect biological productivity in the lake, and it also increases the rate of mineral sediment deposition on the lake bottom.»
«Major changes in northeast Pacific marine ecosystems have been correlated with phase changes in the PDO; warm eras have seen enhanced coastal ocean biological productivity in Alaska and inhibited productivity off the west coast of the contiguous United States, while cold PDO eras have seen the opposite north - south pattern of marine ecosystem productivity.»
Both locations will continue to contribute to biological productivity in contrast to the expanded deserts in many other locations.
To better understand how these mechanisms interact and influence the upwelling process and therefore the biological productivity of the Humboldt system, the IRD and its Peruvian partners, the IGP and the IMARPE, have been conducting modelling work since the 2000s.
A team of researchers led by geoscientist Karl Flessa of the University of Arizona in Tucson hoped that analyzing ancient shells would allow them to estimate the delta's biological productivity both before and after the river's water was diverted.
«In this case, it got concentrated because the ashes drove that biological productivity, and that's where the organic carbon got funneled in.»
In the end, seven criteria — including vulnerability and biological productivity — guided scientists to target specific areas, like the «Shrimp and sardine route from Tabou to Assinie» off the Ivory Coast, and more general ones, like «The Marginal Ice Zone and the Seasonal Ice - Cover Over the Deep Arctic Ocean.»
In mountainous terrain, other factors come into play, such as temperature, biological productivity, and exposition.
The cause of those anomalies varied by region, the researchers discovered when they looked more closely at OCO - 2 and other satellite data showing changes in biological productivity, carbon dioxide concentration in the atmosphere and other measurements.
Together with shipboard and satellite data, the global network of measuring sites provides further understanding of the ocean - atmosphere system and its influence on global climate and biological productivity.
Changes in current direction or temperature within the water column, for example, may correlate to changes in biological productivity or weather patterns.
The United Nations Convention to Combat Desertification describes deforestation and desertification as forms of land degradation, «the loss of the land's biological productivity, caused by human - induced factors and climate change.»
Increases in freshwater flow into the ocean affect ocean circulation, ocean acidification (see AMAP's 2013 report on Arctic Ocean acidification), and biological productivity, and affect weather patterns far to the south.