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You searched for: Subject "biogeochemistry" Remove constraint Subject: "biogeochemistry"
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1. Potentiometric redox measurements in the environment: a novel perspective on method powers and limitations

Author:
David Yalin; Moshe Shenker
Source:
Biogeochemistry 2022 v.158 no.3 pp. 327-343
ISSN:
0168-2563
Subject:
biogeochemistry,   etc   ; orchards; oxygen; slurries; soil;     Show all 5 Subjects
Abstract:
... A decades-long debate exists regarding the possibility of quantifying the redox state of ecosystems using potentiometric redox measurements (PRM). Currently, evidence of non-Nernstian response and poor reproducibility, have led many to regard PRM as a qualitative measure. Here we aim to re-open this debate by shedding light on the reproducibility of PRM in soil systems and in controlled lab experi ...
DOI:
10.1007/s10533-022-00901-3

2. Antimony redox processes in the environment: A critical review of associated oxidants and reductants

Author:
Yidan Zhang; Edward J. O’Loughlin; Man Jae Kwon
Source:
Journal of hazardous materials 2022 v.431 pp. 128607
ISSN:
0304-3894
Subject:
biogeochemistry,   etc   ; antimony; arsenic; oxidation; reducing agents; remediation; toxicity;     Show all 7 Subjects
Abstract:
... The environmental behavior of antimony (Sb) has recently received greater attention due to the increasing global use of Sb in a range of industrial applications. Although present at trace levels in most natural systems, elevated Sb concentrations in aquatic and terrestrial environments may result from anthropogenic activities. The mobility and toxicity of Sb largely depend on its speciation, which ...
DOI:
10.1016/j.jhazmat.2022.128607

3. A case for beta regression in the natural sciences

Author:
Emilie A. Geissinger; Celyn L. L. Khoo; Isabella C. Richmond; Sally J. M. Faulkner; David C. Schneider
Source:
Ecosphere 2022 v.13 no.2 pp. e3940
ISSN:
2150-8925
Subject:
biogeochemistry,   etc   ; diagnostic techniques; elemental composition; linear models; statistical analysis;     Show all 5 Subjects
Abstract:
... Data in the natural sciences are often in the form of percentages or proportions that are continuous and bounded by 0 and 1. Statistical analysis assuming a normal error structure can produce biased and incorrect estimates when data are doubly bounded. Beta regression uses an error structure appropriate for such data. We conducted a literature review of percent and proportion data from 2004 to 202 ...
DOI:
10.1002/ecs2.3940

4. Effects of Fiddler Crab Bioturbation on The Geochemical Migration And Bioavailability of Heavy Metals In Coastal Wetlands

Author:
Feng Pan; Kai Xiao; Zhanrong Guo; Hailong Li
Source:
Journal of hazardous materials 2022 pp. 129380
ISSN:
0304-3894
Subject:
biogeochemistry,   etc   ; bioavailability; bioturbation; burrows; crabs; ecosystems; hydrology; spatial variation;     Show all 8 Subjects
Abstract:
... Fiddler crabs, found in coastal wetlands worldwide, function as ecosystem engineers. Their burrowing activity can significantly alter biogeochemistry at the local scale, however, the mobility of heavy metals (HMs) in burrow sediments remains unclear. Here, we used diffusive gradients in thin-film probes to obtain bioavailable Fe and HMs (Cu, Zn, Ni, Cd, Pb, Co, and Mo) in crab burrows from coastal ...
DOI:
10.1016/j.jhazmat.2022.129380

5. Effects of sulfide availability on the metabolic activity and population dynamics of cable bacteria in freshwater sediment

Author:
Xiaoling Xu; Shouliang Huo; Nanyan Weng; Hanxiao Zhang; Chunzi Ma; Jingtian Zhang; Fengchang Wu
Source:
Science of the total environment 2022 v.808 pp. 151817
ISSN:
0048-9697
Subject:
biogeochemistry,   etc   ; biochemical pathways; freshwater; oxidation; population dynamics; sediments; species diversity; sulfides;     Show all 8 Subjects
Abstract:
... Cable bacteria occur in many natural environments, and their electrogenic sulfide oxidation (e-SOₓ) may influence sediment biogeochemistry. The environmental factors determining the growth and diversity of cable bacteria are poorly known, especially in freshwater sediments. We conducted a laboratory incubation experiment, using freshwater sediments with different sulfide supply levels, to study ho ...
DOI:
10.1016/j.scitotenv.2021.151817

6. Net carbon dioxide emissions from an eroding Atlantic blanket bog

Author:
Rebekka R. E. Artz; Mhairi Coyle; Gillian Donaldson-Selby; Ross Morrison
Source:
Biogeochemistry 2022 v.159 no.2 pp. 233-250
ISSN:
0168-2563
Subject:
biogeochemistry,   etc   ; carbon dioxide; climate change; drought; greenhouse gases; heat; peatlands; risk;     Show all 8 Subjects
Abstract:
... The net impact of greenhouse gas emissions from degraded peatland environments on national Inventories and subsequent mitigation of such emissions has only been seriously considered within the last decade. Data on greenhouse gas emissions from special cases of peatland degradation, such as eroding peatlands, are particularly scarce. Here, we report the first eddy covariance-based monitoring of car ...
DOI:
10.1007/s10533-022-00923-x

7. Influence of biochar on trace element uptake, toxicity and detoxification in plants and associated health risks: A critical review

Author:
Natasha Natasha; Muhammad Shahid; Sana Khalid; Irshad Bibi; Muhammad Asif Naeem; Nabeel Khan Niazi; Filip M. G. Tack; James Anthony Ippolito; Jörg Rinklebe
Source:
Critical reviews in environmental science and technology 2022 v.52 no.16 pp. 2803-2843
ISSN:
1547-6537
Subject:
biogeochemistry,   etc   ; biochar; human health; phytoaccumulation; pollution; risk; soil amendments; sorption; technology; toxicity;     Show all 10 Subjects
Abstract:
... Environmental contamination by toxic trace elements is a global issue faced by soil-plant-human systems. Biochar has gained substantial attention as a soil amendment to reduce toxic trace element impacts on plant and human health due to biochar’s capacity to influence trace element biogeochemistry. This review focuses on the key roles of biochar with respect to trace element interactions, mobility ...
DOI:
10.1080/10643389.2021.1894064

8. Quantifying biological processes producing nitrous oxide in soil using a mechanistic model

Author:
Baoxuan Chang; Zhifeng Yan; Xiaotang Ju; Xiaotong Song; Yawei Li; Siliang Li; Pingqing Fu; Xia Zhu-Barker
Source:
Biogeochemistry 2022 v.159 no.1 pp. 1-14
ISSN:
0168-2563
Subject:
biogeochemistry,   etc   ; climate change; denitrification; greenhouse gases; mechanistic models; nitrification; nitrous oxide; oxygen;     Show all 8 Subjects
Abstract:
... Soil nitrous oxide (N₂O) is an important greenhouse gas contributing to climate change. Many processes produce N₂O in soil and the production rate of each process is affected by climatic-edaphic factors, making the soil-to-atmosphere N₂O flux extremely dynamic. Experimental approaches, including natural and enriched isotopic methods, have been developed to separate and quantify the N₂O production ...
DOI:
10.1007/s10533-022-00912-0

9. Fungal transformation of natural and synthetic cobalt‐bearing manganese oxides and implications for cobalt biogeochemistry

Author:
John Ferrier; Laszlo Csetenyi; Geoffrey Michael Gadd
Source:
Environmental microbiology 2022 v.24 no.2 pp. 667-677
ISSN:
1462-2912
Subject:
biogeochemistry,   etc   ; Aspergillus niger; adsorption; bioremediation; birnessite; cobalt; fungi; laterites; manganese; manganese monoxide; oxalates;     Show all 11 Subjects
Abstract:
... Manganese oxide minerals can become enriched in a variety of metals through adsorption and redox processes, and this forms the basis for a close geochemical relationship between Mn oxide phases and Co. Since oxalate‐producing fungi can effect geochemical transformation of Mn oxides, an understanding of the fate of Co during such processes could provide new insights on the geochemical behaviour of ...
DOI:
10.1111/1462-2920.15526

10. Further investigations into the use of tree rings as archives of atmospheric mercury concentrations

Author:
Mae Sexauer Gustin; Benjamin Ingle; Sarrah M. Dunham-Cheatham
Source:
Biogeochemistry 2022 v.158 no.2 pp. 167-180
ISSN:
0168-2563
Subject:
biogeochemistry,   etc   ; Pinus; air; dewpoint; growth rings; mercury; mountains; relative humidity; temperature; trees; California;     Show all 11 Subjects
Abstract:
... Because there are limited locations where atmospheric mercury (Hg) measurements are made, a method is needed for characterizing air concentrations locally, regionally and globally. Research has shown growth rings of some tree species may be used as archives that record concentrations of gaseous elemental Hg. However, there are still questions regarding the most appropriate sampling method(s), whic ...
DOI:
10.1007/s10533-022-00892-1

11. ‘Boom‐and‐busted’ dynamics of phytoplankton–virus interactions explain the paradox of the plankton

Author:
Kevin J. Flynn; Aditee Mitra; William H. Wilson; Susan A. Kimmance; Darren R. Clark; Angela Pelusi; Luca Polimene
Source:
The new phytologist 2022 v.234 no.3 pp. 990-1002
ISSN:
0028-646X
Subject:
biogeochemistry,   etc   ; adsorption; algal blooms; allometry; biomass; computer simulation; food webs; phytoplankton; sediments; viruses;     Show all 10 Subjects
Abstract:
... Rapid virus proliferation can exert a powerful control on phytoplankton host populations, playing a significant role in marine biogeochemistry and ecology. We explore how marine lytic viruses impact phytoplankton succession, affecting host and nonhost populations. Using an in silico food web we conducted simulation experiments under a range of different abiotic and biotic conditions, exploring vir ...
DOI:
10.1111/nph.18042

12. Landscapes shaped from the top down: predicting cascading predator effects on spatial biogeochemistry

Author:
Julia D. Monk; Oswald J. Schmitz
Source:
Oikos 2022 v.2022 no.5 pp. e08554
ISSN:
0030-1299
Subject:
biogeochemistry,   etc   ; animals; body size; herbivores; landscapes; nutrient availability; nutrient transport; predation; risk; spatial variation;     Show all 10 Subjects
Abstract:
... Spatial heterogeneity in ecological systems can result from animal‐driven top–down processes, but despite some theoretical attention, the emergence of spatial heterogeneity from feedbacks caused by animals is not well understood empirically. Interactions between predators and prey influence animal movement and associated nutrient transport and release, generating spatial heterogeneity that cascade ...
DOI:
10.1111/oik.08554

13. Leaching material from Antarctic seaweeds and penguin guano affects cloud-relevant aerosol production

Author:
Manuel Dall'Osto; Ana Sotomayor-Garcia; Miguel Cabrera-Brufau; Elisa Berdalet; Dolors Vaqué; Sebastian Zeppenfeld; Manuela van Pinxteren; Hartmut Herrmann; Heike Wex; Matteo Rinaldi; Marco Paglione; David Beddows; Roy Harrison; Conxita Avila; Rafael P. Martin-Martin; Jiyeon Park; Andrés Barbosa
Source:
Science of the total environment 2022 v.831 pp. 154772
ISSN:
0048-9697
Subject:
biogeochemistry,   etc   ; aerosols; animal manures; climate; environment; evolution; ice; leachates; macroalgae; penguins; seawater; Antarctic region;     Show all 12 Subjects
Abstract:
... Within the Southern Ocean, the greatest warming is occurring on the Antarctic Peninsula (AP) where clear cryospheric and biological consequences are being observed. Antarctic coastal systems harbour a high diversity of marine and terrestrial ecosystems heavily influenced by Antarctic seaweeds (benthonic macroalgae) and bird colonies (mainly penguins). Primary sea spray aerosols (SSA) formed by the ...
DOI:
10.1016/j.scitotenv.2022.154772

14. Tritium and 14C dependencies upon particulate organic matter within the nuclearized Rhone River (France)

Author:
Frédérique Eyrolle; Olivier Radakovitch; Yoann Copard; Hugo Lepage; Nathan Bodereau; Patrick Raimbault; Aymeric Dabrin; Véronique Lagadec; Cédric Le Corre
Source:
Journal of soils and sediments 2022 v.22 no.7 pp. 2076-2093
ISSN:
1439-0108
Subject:
biogeochemistry,   etc   ; chlorophyll; filtration; food chain; particulate organic carbon; rivers; sediments; soil erosion; tritium; France;     Show all 10 Subjects
Abstract:
... PURPOSE: Radiocarbon and tritium are the dominant radionuclides released by nuclear industries over the world. Close interactions of these elements with particulate organic matter (POM) in soils and rivers are widely reported in the literature but only few studies focus on their relationships with POM within nuclearized rivers. Here, we focus on the nuclearized Rhone River (France) and its tributa ...
DOI:
10.1007/s11368-022-03227-7

15. Insights on the Role of Sulfur Oxidizing Bacteria in Acid Mine Drainage Biogeochemistry

Author:
Prashasti Bhandari; Sangeeta Choudhary
Source:
Geomicrobiology journal 2022 v.39 no.3-5 pp. 270-281
ISSN:
1521-0529
Subject:
biogeochemistry,   etc   ; acid mine drainage; air; cost effectiveness; drainage; environmental hazards; metabolism; oxidation; remediation; sulfates; sulfides; sulfur;     Show all 12 Subjects
Abstract:
... Wastes liberation from mining operations has occurred for quite a few centuries, and quarrying has advanced considerably in the twentieth century. Minerals excavating and their further processing generate enormous amounts of waste rocks and tailings, commonly rich in sulfide compounds. Exposure of sulfide-containing minerals to water and air, and actions of indigenous bacterial inhabitants cause t ...
DOI:
10.1080/01490451.2021.1985190

16. Shifts in microbial stoichiometry upon nutrient addition do not capture growth-limiting nutrients for soil microorganisms in two subtropical soils

Author:
Christoph Rosinger; Katharina M. Keiblinger; Johannes Rousk; Hans Sandén
Source:
Biogeochemistry 2022 v.159 no.1 pp. 33-43
ISSN:
0168-2563
Subject:
biogeochemistry,   etc   ; community structure; enzymes; forest soils; grassland soils; grasslands; microbial biomass; microbial communities; microbial growth; stoichiometry;     Show all 10 Subjects
Abstract:
... Microbial stoichiometry has become a key aspect in ecological research as shifts in microbial C:N, C:P and N:P ratios upon nutrient addition are presumed to give insight into relative nutrient limitations for soil microorganisms–with far-reaching implications for biogeochemical processes. However, this expectation has never been tested against direct methods of microbial growth responses to nutrie ...
DOI:
10.1007/s10533-022-00911-1

17. Accumulation of scandium, cerium, europium, hafnium, and tantalum in oats and barley grown in soils that differ in their characteristics and level of contamination

Author:
Irina Shtangeeva
Source:
Environmental science and pollution research 2022 v.29 no.27 pp. 40839-40853
ISSN:
0944-1344
Subject:
biogeochemistry,   etc   ; arsenic; barley; bioaccumulation; cerium; chromium; cobalt; europium; hafnium; iron; polluted soils; pollution; research; scandium; tantalum; zinc;     Show all 16 Subjects
Abstract:
... Up to now, information about biogeochemistry of many trace elements is scarce. Meanwhile, all the elements are always present in soil and plants. It may be suggested that the trace elements also play certain role in the biogeochemical processes. The aim of the research was to study bioaccumulation of poorly investigated trace elements (scandium, cerium, europium, hafnium, and tantalum) and well-kn ...
DOI:
10.1007/s11356-021-18247-y

18. Metal Removal by a Free Surface Constructed Wetland and Prediction of Metal Bioavailability and Toxicity with Diffusive Gradients in Thin Films (DGT) and Biotic Ligand Model (BLM)

Author:
Chongyang Qin; Xiaoyu Xu; Erin Peck
Source:
Environmental management 2022 v.69 no.5 pp. 994-1004
ISSN:
0364-152X
Subject:
biogeochemistry,   etc   ; bioavailability; constructed wetlands; environmental monitoring; industrial wastewater; ligands; models; organic matter; prediction; surface water; toxicity; zinc;     Show all 12 Subjects
Abstract:
... The H-02 constructed wetland is a free water surface wetland to remove copper (Cu) and zinc (Zn) from the industrial wastewater. In this study, we evaluated the performance of the wetland from 2018 to 2019 and coupled the diffusive gradients in thin films (DGTs) and biotic ligand model (BLM) to explore metal speciation and bioavailability in wetland waters. Surface water samples were collected and ...
DOI:
10.1007/s00267-021-01567-7

19. The Hg behaviors in mangrove ecosystems revealed by Hg stable isotopes: a case study of Maowei mangrove

Author:
Shuyuan Huang; Ronggen Jiang; Qingyong Song; Yuhan Zhao; Supeng Lv; Yuanbiao Zhang; Yunlong Huo; Yaojin Chen
Source:
Environmental science and pollution research 2022 v.29 no.17 pp. 25349-25359
ISSN:
0944-1344
Subject:
biogeochemistry,   etc   ; case studies; humans; isotope fractionation; mangrove ecosystems; mercury; organic matter; photoreduction; pollution; research; seawater; sediments; wetlands;     Show all 13 Subjects
Abstract:
... As one of the most productive marine ecosystems in the tropics and subtropics, mangroves are an important part of the global mercury (Hg) cycling. The environmental processes and effects of Hg in mangroves are complex and affect human Hg exposure, and it is crucial to understand Hg behaviors in the mangrove ecosystem. However, clarifying Hg behaviors in the mangrove ecosystem remains difficult bec ...
DOI:
10.1007/s11356-021-17744-4

20. A Refinement of the Processes Controlling Dissolved Copper and Nickel Biogeochemistry: Insights From the Pan‐Arctic

Author:
Laramie T. Jensen; Jay T. Cullen; Sarah L. Jackson; Loes J. A. Gerringa; Dorothea Bauch; Rob Middag; Robert M. Sherrell; Jessica N. Fitzsimmons
Source:
Journal of geophysical research 2022 v.127 no.5 pp. e2021JC018087
ISSN:
2169-9275
Subject:
biogeochemistry,   etc   ; basins; continental shelf; geophysics; ligands; research; riparian areas; salinity; sediments; Arctic Ocean; Arctic region; Atlantic Ocean; Canada;     Show all 13 Subjects
Abstract:
... Recent studies, including many from the GEOTRACES program, have expanded our knowledge of trace metals in the Arctic Ocean, an isolated ocean dominated by continental shelf and riverine inputs. Here, we report a unique, pan‐Arctic linear relationship between dissolved copper (Cu) and nickel (Ni) present north of 60°N that is absent in other oceans. The correlation is driven primarily by high Cu an ...
DOI:
10.1029/2021JC018087