Results 41 to 50 of about 41,437 (293)

Mineral Weathering and Podzolization Control Acid Neutralization and Streamwater Chemistry Gradients in Upland Glaciated Catchments, Northeastern United States

Frontiers in Earth Science, 2019
Headwater streams in the White Mountains, NH, United States have been shown to have downstream gradients of increasing pH and concentrations of base cations coupled with decreasing concentrations of aluminum.
Scott W. Bailey, Kevin J. McGuire, Donald S. Ross, Mark B. Green, Olivia L. Fraser   +4 more
doaj   +1 more source

Perspectives of High‐Resolution Mass Spectrometry in Soil Science

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Soil biogeochemical research requires specific, sensitive, and accurate methods to identify and quantify organic molecules in order to trace biochemical processes and assess element cycling in complex, heterogenous systems. High‐resolution mass spectrometry (HRMS) has evolved into a transformative tool for unraveling the complex chemical ...
Bruno Glaser, Tobias Bromm, Klaus Kaiser, Arthur Gross, Carsten Simon, Snežana Maletić, Ines Mulder, Oliver J. Lechtenfeld, Sören Thiele‐Bruhn, Ivy Notterpek, Callum Banfield, Michaela A. Dippold   +11 more
wiley   +1 more source

Biogeochemistry: A introduction [PDF]

, 2011
The concept of biogeochemistry is about one hundred years old. It was first defined by the Russian scientist Vernadsky in 1926. At the beginning of the twentieth century, scientific disciplines divided themselves into many subdisciplines: specialization ...
Middelburg, J.J., General geochemistry, Bio-, hydro-, and environmental geochemistry, Laane, R.W.P.M., Geochemistry   +4 more
core   +1 more source

Simulating Marine Ecosystem Dynamics and Biogeochemical Cycling With Multiple Plankton Functional Types

Journal of Advances in Modeling Earth Systems
Current representations of marine ecosystems in Earth System Models are greatly simplified, neglecting key interactions between dynamic food webs, biogeochemistry, and climate change.
Jun Yu, Kristen M. Krumhardt, J. Keith Moore, Robert T. Letscher, Shanlin Wang, Nicola A. Wiseman, Matthew C. Long, Keith Lindsay, Michael Levy, Colleen M. Petrik, Adam C. Martiny   +10 more
doaj   +1 more source

Responses of primary producers, anoxia, and chemical feedback to Late Glacial climate change: Insights from a paired lake approach

Journal of Quaternary Science, EarlyView.
Abstract Worldwide, lacustrine ecosystems are threatened by eutrophication and deoxygenation. Both processes are driven by the combined effects of human activities and climate change. Understanding the pre‐anthropogenic nexus between warming, eutrophication, deoxygenation, and related feedback is essential to determine how lakes respond to rapid ...
Noé R.M.M. Schmidhauser, Stan J. Schouten, Petra Zahajská, Andrea Lami, Jacqueline F.N. van Leeuwen, Rik Tjallingii, Hendrik Vogel, Martin Grosjean   +7 more
wiley   +1 more source

The Effect of Nitrogen and Phosphorus Fertilization on Plant Community Along Chronosequences of Reclaimed and Unreclaimed Postmining Soils After Coal Mining

Land Degradation &Development, EarlyView.
ABSTRACT Nitrogen and phosphorus availability drive plant community composition, productivity, and ecosystem functioning. During succession, nutrient availability typically changes as organic matter accumulates in the soil, influencing both nitrogen and phosphorus pools. We assessed nutrient limitation along postmining chronosequences (10–50 years old),
Mateusz Rawlik, Ondřej Mudrák, Cecilie Tesnerová, Jan Frouz   +3 more
wiley   +1 more source

Carbon and Nitrogen in the Lower Basin of the Paraíba do Sul River, Southeastern Brazil: Element fluxes and biogeochemical processes

Revista Ambiente & Água, 2011
The study was conducted in the lower basin of the Paraíba do Sul River (PSR), in which 57,000 km2 of the basin is located in the Brazilian states of São Paulo, Minas Gerais and Rio de Janeiro. We proposed to identify the main sources of C and N fluxes in
Luiz Antonio Martinelli, Carlos Eduardo de Rezende, Alvaro Ramon Coelho Ovalle, Ricardo de Oliveira Figueiredo   +3 more
doaj   +1 more source

Distribution and microbial degradation of dissolved organic carbon in the northern South China Sea

Frontiers in Marine Science, 2022
Dissolved organic carbon (DOC) is the largest reduced carbon pool in the ocean, and it plays significant roles not only in the ocean carbon cycle but also in the control of many biogeochemical processes in the ocean.
Ling Ding, Ling Ding, Sen Shan, Chunle Luo, Xuchen Wang   +4 more
doaj   +1 more source

Bio‐Derived Carbon Nanoparticles: A Green Amendment for Alleviating Heavy Metals in Soil–Plant Systems

Land Degradation &Development, EarlyView.
ABSTRACT Heavy metal (HM) contamination of soil–plant systems poses persistent ecological and health risks, driving interest in nanoparticle‐based remediation. Although conventional chemically synthesized nanoparticles (CSNPs) are effective, their energy‐intensive production and residual toxicity limit sustainable deployment.
Babar Hussain, Muhammad Nauman, Zahid Hussain, Palanisamy Vasudhevan, Abdulaziz G. Alghamdi, Shiyong Sun, Shengyan Pu   +6 more
wiley   +1 more source

Ecological homogenization of soil properties in the American residential macrosystem

Ecosphere, 2022
The conversion of native ecosystems to residential ecosystems dominated by lawns has been a prevailing land‐use change in the United States over the past 70 years.
Christopher D. Ryan, Peter M. Groffman, J. Morgan Grove, Sharon J. Hall, James B. Heffernan, Sarah E. Hobbie, Dexter H. Locke, Jennifer L. Morse, Christopher Neill, Kristen C. Nelson, Jarlath O'Neil‐Dunne, Rinku Roy Chowdhury, Meredith K. Steele, Tara L. E. Trammell   +13 more
doaj   +1 more source