Results 1 to 10 of about 1,467 (136)

Low Climate Benefit of Nordic Coastal Marshes: Site Conditions Outweigh Grazing Effects and Shape Trade-Offs Between Carbon Storage and Its Stability. [PDF]

Glob Chang Biol
Conceptual diagram of soil carbon cycling across climatic and environmental gradients in Nordic marshes and grazing effect. Denmark's warmer climate, high nutrient inputs, elevated salinity, and sandy soils promote rapid microbial decomposition of predominantly labile and root‐derived OC, driving high CO2 emissions and relatively high although unstable
Leiva-Dueñas C, Banta GT, Boström C, Eller F, Eklöf J, Andersen LH, Jensen K, Lanari M, Logemann E, Masque P, Ostertag T, Reisdorff C, Richard A, Vehmaa A, Alm J, von Numers M, Krause-Jensen D.   +16 more
europepmc   +2 more sources

Diazotroph‐Driven 210Po Scavenging Reveals a Potential Radiotracer for Marine Nitrogen Fixation

Geophysical Research Letters
The role of phytoplankton, particularly diazotrophs, in affecting in situ 210Po scavenging has been little investigated. Here, we first report an enhanced 210Po deficit in a cyclonic eddy core relative to its edge in the subtropical Pacific, coinciding ...
Weifeng Yang, Hui Shen, Kuanbo Zhou, Feng Ling, Minfang Zheng   +4 more
doaj   +2 more sources

Tracing the Atmospheric Input of Seawater-Dissolvable Pb Based on the Budget of 210Pb in the East Sea (Japan Sea)

Frontiers in Marine Science, 2021
In order to determine the atmospheric input of 210Pb and seawater-dissolvable Pb in the East Sea (Japan Sea), we measured the concentrations of total 210Pb and dissolved Pb (<0.2 μm) in seawater and 210Pb and 226Ra in sinking particles.
Hojong Seo, Guebuem Kim, Young-Il Kim, Intae Kim   +3 more
doaj   +1 more source

Novel Application of 210Po-210Pb Disequilibria to Date Snow, Melt Pond, Ice Core, and Ice-Rafted Sediments in the Arctic Ocean

Frontiers in Marine Science, 2021
We collected surface ocean water, snow, grab ice, ice core, melt pond and ice-rafted sediment (IRS) from 5 ice stations during the Western Arctic US GEOTRACES cruise (USGCG Healy; August 10 – October 7, 2015) and analyzed for 210Po (T1/2 = 138.4 days ...
Mark Baskaran, Katherine Krupp
doaj   +1 more source

Lead-210 in the atmospheric air of North and South Estonia: long-term monitoring and back-trajectory calculations; pp. 442–451 [PDF]

Proceedings of the Estonian Academy of Sciences, 2016
As the first study of long-term atmospheric 210Pb in Estonia, the activity concentration and possible origins of the nuclide were monitored at Tõravere, South Estonia, and Narva-Jõesuu, North-East Estonia, from 2001 to 2008.
Kadri Isakar, Madis Kiisk, Enn Realo, Siiri Suursoo   +3 more
doaj   +1 more source

The depositional history of the Knysna estuary since European colonization in the context of sea level and human impacts

Frontiers in Ecology and Evolution, 2023
IntroductionEstuaries are highly vulnerable systems and increasingly exposed to a number of environmental, climatic and human-induced stressors. The Knysna estuary and lagoon complex, on the south coast of South Africa, is regarded as environmentally and
Kelly L. Kirsten, Kelly L. Kirsten, Lauren Pretorius, Michael E. Meadows, Michael E. Meadows, Rieneke Weij, Rieneke Weij, Marco Aquino-López, Helen G. Antonopoulos, Yakhuluntu Dubazana, Abdul Qadeer, Jemma Finch, Kunshan Bao   +12 more
doaj   +1 more source

Atmospheric 210Pb, 210Po and 210Po/210Pb activity ratio in urban aerosols: temporal variability and impact of biomass burning emission [PDF]

Tellus: Series B, Chemical and Physical Meteorology, 2012
Atmospheric 210Pb, 210Po and their activity ratio (210Po/210Pb) have been studied for two years (January 2007–April 2009) from an urban site (Kanpur: 26.5°N and 80.3°E) in the Indo-Gangetic Plain.
Kirpa Ram, M.M. Sarin
doaj   +1 more source

Applicability of the LSC technique for determining 210Pb in liquid samples for purposes of dose assessment via in vitro bioassay

Brazilian Journal of Radiation Sciences, 2022
A new approach for the determination of 210Pb by liquid scintillation counting was developed by the LBIOVT. In order to assess the applicability of the technique for internal monitoring of occupationally exposed workers and members of the public, some ...
Camilla da Silva Sampaio Lucena, Geiza Celeste de Oliveira Medeiros, Sueli Alexandra Mesquita, Bernardo Maranhão Dantas, Wanderson Oliveira Sousa   +4 more
doaj   +1 more source

Quantifying 210Po/210Pb Disequilibrium in Seawater: A Comparison of Two Precipitation Methods With Differing Results

Frontiers in Marine Science, 2021
The disequilibrium between lead-210 (210Pb) and polonium-210 (210Po) is increasingly used in oceanography to quantify particulate organic carbon (POC) export from the upper ocean.
Montserrat Roca-Martí, Montserrat Roca-Martí, Viena Puigcorbé, Maxi Castrillejo, Núria Casacuberta, Jordi Garcia-Orellana, Jordi Garcia-Orellana, J. Kirk Cochran, Pere Masqué, Pere Masqué, Pere Masqué, Pere Masqué   +11 more
doaj   +1 more source

CORRELATION BETWEEN TOTAL SUSPENDED PARTICLES AND NATURAL RADIONUCLIDE IN MALAYSIA MARITIME AIR DURING HAZE EVENT IN JUNE-JULY 2009 [PDF]

Journal CleanWAS, 2018
Atmospheric particles in the surface air including aerosol and dust were collected using high volume air sampler (HVAS) for obtaining the activity levels of 210Pb and 210Po over Malaysian waters during the EPSP’09 Scientific Expedition.
Asnor , Che Abd Rahim
doaj   +1 more source