Results 21 to 30 of about 1,677,076 (289)

Nitrogen Deposition to and Cycling in a Deciduous Forest [PDF]

The Scientific World JOURNAL, 2001
The project described here seeks to answer questions regarding the role increased nitrogen (N) deposition is playing in enhanced carbon (C) sequestration in temperate mid-latitude forests, using detailed measurements from an AmeriFlux tower in southern Indiana (Morgan-Monroe State Forest, or MMSF).
Sara C. Pryor, Rebecca J. Barthelmie, Margaret Carreiro, Melissa L. Davis, Anne Hartley, Bjame Jensen, Andrew Oliphant, Melissa J. C. Randolph, Justin T. Schoof   +8 more
openaire   +3 more sources

Impact of ship-borne nitrogen deposition on the Gulf of Finland ecosystem: an evaluation

Oceanologia, 2013
The degree of inter-annual variability in spring and summer phytoplankton blooms and nitrogen fixation in response to the deposition of oxidized nitrogen originating from ship emissions (hereafter nitrogen deposition) was evaluated in the Gulf of Finland
Urmas Raudsepp, Jaan Laanemets, Ilja Maljutenko, Marke Hongisto, Jukka-Pekka Jalkanen   +4 more
doaj   +1 more source

The pitcher plant Sarracenia purpurea can directly acquire organic nitrogen and short-circuit the inorganic nitrogen cycle. [PDF]

PLoS ONE, 2009
BACKGROUND:Despite the large stocks of organic nitrogen in soil, nitrogen availability limits plant growth in many terrestrial ecosystems because most plants take up only inorganic nitrogen, not organic nitrogen.
Jim D Karagatzides, Jessica L Butler, Aaron M Ellison   +2 more
doaj   +1 more source

Effects of Strigolactone on Torreya grandis Gene Expression and Soil Microbial Community Structure Under Simulated Nitrogen Deposition

Frontiers in Plant Science, 2022
Nitrogen enters the terrestrial ecosystem through deposition. High nitrogen levels can affect physical and chemical properties of soil and inhibit normal growth and reproduction of forest plants. Nitrogen modulates the composition of soil microorganisms.
Chenliang Yu, Chenliang Yu, Qi Wang, Qi Wang, Shouke Zhang, Shouke Zhang, Hao Zeng, Hao Zeng, Weijie Chen, Weijie Chen, Wenchao Chen, Wenchao Chen, Heqiang Lou, Heqiang Lou, Weiwu Yu, Weiwu Yu, Weiwu Yu, Jiasheng Wu, Jiasheng Wu, Jiasheng Wu   +19 more
doaj   +1 more source

Impact of nitrogen deposition at the species level [PDF]

Proceedings of the National Academy of Sciences, 2012
In Europe and, increasingly, the rest of the world, the key policy tool for the control of air pollution is the critical load, a level of pollution below which there are no known significant harmful effects on the environment. Critical loads are used to map sensitive regions and habitats, permit individual polluting activities, and frame international ...
Payne, Richard J., Dise, Nancy B., Stevens, Carly J., Gowing, David J. G., Begin Partners, ., Dupre, Cecilia, Dorland, Edu, Gaudnik, Cassandre, Bleeker, Albert, Diekmann, Martin, Alard, Didier, Bobbink, Roland, Fowler, David, Corcket, Emmanuel, Mountford, Owen, Vandvik, Vigdis, Aarrestad, Per Arild, Muller, Serge   +17 more
openaire   +5 more sources

Ammonia should be considered in field experiments mimicking nitrogen deposition

Atmospheric and Oceanic Science Letters, 2020
Excess nitrogen deposition has significant impacts on water eutrophication, soil acidification, eleveted greenhouse gas emissions, and biodiversity loss.
Yuepeng PAN, Shili TIAN, Dianming WU, Wen XU, Xiaying ZHU, Chunyan LIU, Dejun LI, Yunting FANG, Lei DUAN, Xuejun LIU, Yuesi WANG   +10 more
doaj   +1 more source

Nitrogen Emission and Deposition: The European Perspective [PDF]

The Scientific World JOURNAL, 2001
Europe has been successful in reducing the emissions of several nitrogenous pollutants over recent decades. This is reflected in concentrations and deposition rates that have decreased for several components. Emissions of nitrogen containing gases are estimated to have decreased in Europe by 10%, 21%, and 14% for NO, NOx, and NH3, respectively, between
Jan Willem Erisman, Peringe Grennfelt, Mark Sutton   +2 more
openaire   +3 more sources

An overview of atmospheric deposition chemistry over the Alps: present status and long-term trends [PDF]

, 2006
Several research programs monitoring atmospheric deposition have been launched in the Alpine countries in the last few decades. This paper uses data from previous and ongoing projects to: (i) investigate geographical variability in wet deposition ...
Thimonier, Anne, Ulrich, Erwin, Rogora, Michela, Stähli, Manfred, Nickus, Ulrike, Brizzio, Maria Cristina, Kalina, Michael, Arisci, Sylvia, Puxbaum, Hans, Mosello, Rosario, Probst, Anne, Waldner, Peter, Barbieri, Alberto, Schmitt, Marcel, Balestrini, Raflaella   +14 more
core   +1 more source

Estimation of atmospheric nutrient inputs to the Atlantic Ocean from 50 degrees North to 50 degrees South based on large-scale field sampling: Fixed nitrogen and dry deposition of phosphorus [PDF]

, 2010
Atmospheric nitrogen inputs to the ocean are estimated to have increased by up to a factor of three as a result of increased anthropogenic emissions over the last 150 years, with further increases expected in the short- to mid-term at least.
Baker, A.R., C. Adams, Jickells, TJ, Jickells, T.D., Ganzeveld, L.N., T. D. Jickells, Lesworth, T., T. Lesworth, A. R. Baker, Ganzeveld, L, Adams, C., Baker, AR, Lesworth, T, L. Ganzeveld, Adams, C   +14 more
core   +1 more source

Modeling nitrogen deposition in global forests

, 2023
Understanding the spatial patterns and temporal dynamics of nitrogen (N) deposition is a prerequisite to evaluate its ecological impacts on global forests that cover nearly one third of the land area and provide fundamental ecosystem services.
Du, Enzai,, Schwede, Donna B.,, Simpson, David,, Dentener, F.,, de Vries, W.,   +4 more
core   +1 more source