Results 31 to 40 of about 661,384 (261)

Spatial and temporal distribution of Polycyclic Aromatic Hydrocarbons (PAHs) in sediments from Poyang Lake, China. [PDF]

PLoS ONE, 2018
Concentrations of polycyclic aromatic hydrocarbons (PAHs) were measured in 22 surface sediment samples and an approximately 100-year scale sediment core collected from Poyang Lake.
Qianyu Li, Jinglu Wu, Zhonghua Zhao
doaj   +1 more source

Applying the core-satellite species concept: Characteristics of rare and common riverine dissolved organic matter

Frontiers in Water, 2023
IntroductionDissolved organic matter (DOM) composition varies over space and time, with a multitude of factors driving the presence or absence of each compound found in the complex DOM mixture.
Masumi Stadler, Malcolm A. Barnard, Malcolm A. Barnard, Kadir Bice, Michaela L. de Melo, Dipankar Dwivedi, Erika C. Freeman, Vanessa A. Garayburu-Caruso, Annika Linkhorst, Erick Mateus-Barros, Cheng Shi, Andrew J. Tanentzap, Andrew J. Tanentzap, Christof Meile   +13 more
doaj   +1 more source

The Search for Supernova-produced Radionuclides in Terrestrial Deep-sea Archives [PDF]

, 2012
An enhanced concentration of 60Fe was found in a deep ocean's crust in 2004 in a layer corresponding to an age of ~2 Myr. The confirmation of this signal in terrestrial archives as supernova-induced and detection of other supernova-produced radionuclides
A. Wallner, Aggarwal, Allison, Auer, Avillez, Berghöfer, Bourlès, Chmeleff, Cook, D. Breitschwerdt, Diehl, Fitoussi, Fitoussi, Fuchs, G. Korschinek, G. Rugel, Hofmann, Holden, Honda, Imamura, J. Feige, Knie, Knie, Korschinek, Korschinek, L. K. Fifield, Lachner, Merchel, Middleton, Nishiizumi, Paul, Paul, Rugel, S. Merchel, S. R. Winkler, Samworth, Thomas, Wallner   +37 more
core   +1 more source

Impactos da mudança de vegetação local no aporte de matéria orgânica para um estuário tropical preservado (Estuário do Rio Itapicuru – BA)

Química Nova
Estuaries are major areas of organic matter (OM) deposition, playing an important role in the global carbon cycle. The Itapicuru's river estuary (IRE) is in the North Coast of Bahia (Brazil), in na Environmental Protected Area.
Lucas M. Guimarães, Tiago de Abreu C. Lima, Elvis Joacir De França, Gilberto N. de Arruda, José Roberto B. de Souza, Ana Cecília R. de Albergaria-Barbosa   +5 more
doaj   +1 more source

Hindcasting cyanobacterial communities in Lake Okaro with germination experiments and genetic analyses [PDF]

, 2009
Cyanobacterial blooms are becoming increasingly prevalent worldwide. Sparse historic phytoplankton records often result in uncertainty as to whether bloom-forming species have always been present and are proliferating in response to eutrophication or ...
Cary, S. Craig, Hamilton, David P., Jentzsch, Katrin, Rueckert, Andreas, Wood, Susanna A.   +4 more
core   +2 more sources

Chemical weathering and provenance evolution of Holocene–Recent sediments from the Western Indus Shelf, Northern Arabian Sea inferred from physical and mineralogical properties [PDF]

, 2012
We present a multi-proxy mineral record based on X-ray diffraction and diffuse reflectance spectrophotometry analysis for two cores from the western Indus Shelf in order to reconstruct changing weathering intensities, sediment transport, and provenance ...
Clift, Peter D., Hillier, Stephen, Köhler, Cornelia M., Limmer, David R., Moreton, Steven G., Tabrez, Ali R.   +5 more
core   +2 more sources

Geochronology of sediment cores from the Vefsnfjord, Norway

Marine Pollution Bulletin, 2021
The sedimentary environment is a repository and carrier for a variety of pollutants, and sediment transport from land to coastal areas is an important environmental process. In the present study, we use 210Pb/226Ra and 137Cs in sediment cores to assess sediment supply rates at four sites within the Vefsnfjord in Nordland county, Norway.
Heldal, Hilde Elise, Helvik, Lena, Appleby, Peter G., Haanes, Hallvard, Volynkin, Andrey Sergeevich, Jensen, Henning, Lepland, Aivo   +6 more
openaire   +3 more sources

Perfluoroalkyl substances in the environment and biota from the coasts of the South China Sea: profiles, sources, and potential risks

Frontiers in Environmental Science
Perfluoroalkyl substances (PFAS) are an emerging class of contaminants that have been produced since the 1950s. The first report on PFAS to raise global concerns was published in 2001. Since then, many countries have implemented policies to control PFAS.
Jiaer Zhang, Jiaer Zhang, Yuxin Xie, Yuxin Xie, Jingru Zhang, Mai Ye, Jieyi Diao, Jieyi Diao, Jianwen Wang, Jianwen Wang, Qiongping Sun, Qiongping Sun, Tieyu Wang, Tieyu Wang   +13 more
doaj   +1 more source

Coastal permafrost landscape development since the Late Pleistocene in the western Laptev Sea, Siberia [PDF]

, 2011
The palaeoenvironmental development of the western Laptev Sea is understood primarily from investigations of exposed cliffs and surface sediment cores from the shelf.
Andreev, Andrei, Grigoriev, M. N., Kunitsky, V. V., Murray, A., Overduin, Pier Paul, Schirrmeister, Lutz, Winterfeld, Maria   +6 more
core   +1 more source

Core compression and surficial sediment loss of lake sediments of high porosity caused by gravity coring [PDF]

Limnology and Oceanography, 1991
We present 210Pb, 137Cs, and 60Co data from three lakes of the Experimental Lakes Area, NW Ontario, with sediments of high porosity and high organic C content which indicate that gravity coring fails to capture the top 5–15 cm of sediment. Compression of gravity cores by a factor of up to 3 is unequivocal throughout at least the top 15 cm of the cores ...
John Crusius, Robert F. Anderson
openaire   +1 more source