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  1. Article ; Online: Eutrophication and Deoxygenation Forcing of Marginal Marine Organic Carbon Burial During the PETM.

    Papadomanolaki, Nina M / Sluijs, Appy / Slomp, Caroline P

    Paleoceanography and paleoclimatology

    2022  Volume 37, Issue 3, Page(s) e2021PA004232

    Abstract: The Paleocene-Eocene Thermal Maximum (PETM) is recognized globally by a negative excursion in stable carbon isotope ratios ( ... ...

    Abstract The Paleocene-Eocene Thermal Maximum (PETM) is recognized globally by a negative excursion in stable carbon isotope ratios (δ
    Language English
    Publishing date 2022-03-03
    Publishing country United States
    Document type Journal Article
    ISSN 2572-4525
    ISSN (online) 2572-4525
    DOI 10.1029/2021PA004232
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Enhanced phosphorus recycling during past oceanic anoxia amplified by low rates of apatite authigenesis.

    Papadomanolaki, Nina M / Lenstra, Wytze K / Wolthers, Mariette / Slomp, Caroline P

    Science advances

    2022  Volume 8, Issue 26, Page(s) eabn2370

    Abstract: Enhanced recycling of phosphorus as ocean deoxygenation expanded under past greenhouse climates contributed to widespread organic carbon burial and drawdown of atmospheric ... ...

    Abstract Enhanced recycling of phosphorus as ocean deoxygenation expanded under past greenhouse climates contributed to widespread organic carbon burial and drawdown of atmospheric CO
    Language English
    Publishing date 2022-07-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.abn2370
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: A historical record of benthic foraminifera in seasonally anoxic Lake Grevelingen, the Netherlands

    Richirt, Julien / Guihéneuf, Anaïs / Mouret, Aurélia / Schweizer, Magali / Slomp, Caroline P. / Jorissen, Frans J.

    Palaeogeography, palaeoclimatology, palaeoecology. 2022 Aug. 01, v. 599

    2022  

    Abstract: Lake Grevelingen is a former branch of the Rhine-Meuse-Scheldt estuary, which was artificially transformed into a salt-water lake by a dam in 1971. This transformation induced profound changes in the biological community of the basin, which have been ... ...

    Abstract Lake Grevelingen is a former branch of the Rhine-Meuse-Scheldt estuary, which was artificially transformed into a salt-water lake by a dam in 1971. This transformation induced profound changes in the biological community of the basin, which have been described as an ecodisaster, with seasonal hypoxia/anoxia occurring in the deepest parts of the lake. Here, we investigate a sediment core sampled in 2012 in the Den Osse Basin (34 m depth) of Lake Grevelingen, recording the last ~50 years and including the transition from an estuary to a salt-water lake. Sediment molybdenum (Mo) concentrations were used to refine an existing age model based on ²¹⁰Pb, giving us an estimated precision of ±3 years. The benthic foraminiferal succession reflects the anthropogenic modifications in Lake Grevelingen and allows four successive stages to be distinguished: 1) before 1971, when the system was estuarine; 2) from 1971 to 1978, when the system rapidly changed into an enclosed brackish water lake; 3) from 1978 to 1999, when a seaward sluice was opened during winter and 4) the period from 1999 to 2012, with a year-round opening of the sluice and doubling of water exchanges with the North Sea. The foraminiferal record, showing communities mainly dominated by Elphidium selseyense, also highlights the appearance of the putatively exotic Ammonia confertitesta in the mid-1980s, which thereafter progressively replaced the congeneric autochthonous Ammonia aberdoveyensis. Finally, we hypothesise that the activity of cable bacteria, S-oxidising prokaryotes present in the surface sediments of Den Osse Basin in winter and spring, causes dissolution of foraminiferal tests by decreasing the pore water carbonate saturation state in the sediments directly below the oxic zone. This explains the contrast between the abundant living populations and the very low numbers of foraminiferal shells preserved in the top ~15 cm of the sediment.
    Keywords Ammonia aberdoveyensis ; ammonia ; basins ; brackish water ; carbonates ; estuaries ; historical records ; hypoxia ; lakes ; models ; palaeogeography ; paleoclimatology ; paleoecology ; prokaryotic cells ; sediments ; spring ; winter ; Netherlands ; North Sea
    Language English
    Dates of publication 2022-0801
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 417718-6
    ISSN 0031-0182
    ISSN 0031-0182
    DOI 10.1016/j.palaeo.2022.111057
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 67/162: Show issues

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  4. Article ; Online: Impact of iron addition on phosphorus dynamics in sediments of a shallow peat lake 10 years after treatment.

    Münch, Melanie A / van Kaam, Rianne / As, Karel / Peiffer, Stefan / Heerdt, Gerard Ter / Slomp, Caroline P / Behrends, Thilo

    Water research

    2023  Volume 248, Page(s) 120844

    Abstract: Internal phosphorus (P) loading is a key water quality challenge for shallow lakes. Addition of iron (Fe) salts has been used to enhance P retention in lake sediments. However, its effects on sediment geochemistry are poorly studied, albeit pivotal for ... ...

    Abstract Internal phosphorus (P) loading is a key water quality challenge for shallow lakes. Addition of iron (Fe) salts has been used to enhance P retention in lake sediments. However, its effects on sediment geochemistry are poorly studied, albeit pivotal for remediation success. Here, we assess the factors controlling the retention of P and long-term effects following application of FeCl
    MeSH term(s) Lakes/chemistry ; Iron/analysis ; Phosphorus/analysis ; Water Pollutants, Chemical/analysis ; Environmental Monitoring ; Eutrophication ; Geologic Sediments/chemistry ; China
    Chemical Substances Iron (E1UOL152H7) ; Phosphorus (27YLU75U4W) ; Water Pollutants, Chemical
    Language English
    Publishing date 2023-11-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 202613-2
    ISSN 1879-2448 ; 0043-1354
    ISSN (online) 1879-2448
    ISSN 0043-1354
    DOI 10.1016/j.watres.2023.120844
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 78/260: Show issues
    Z 3381: Show issues

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  5. Article ; Online: Gene-Based Modeling of Methane Oxidation in Coastal Sediments: Constraints on the Efficiency of the Microbial Methane Filter.

    Lenstra, Wytze K / van Helmond, Niels A G M / Martins, Paula Dalcin / Wallenius, Anna J / Jetten, Mike S M / Slomp, Caroline P

    Environmental science & technology

    2023  Volume 57, Issue 34, Page(s) 12722–12731

    Abstract: Methane is a powerful greenhouse gas that is produced in large quantities in marine sediments. Microbially mediated oxidation of methane in sediments, when in balance with methane production, prevents the release of methane to the overlying water. Here, ... ...

    Abstract Methane is a powerful greenhouse gas that is produced in large quantities in marine sediments. Microbially mediated oxidation of methane in sediments, when in balance with methane production, prevents the release of methane to the overlying water. Here, we present a gene-based reactive transport model that includes both microbial and geochemical dynamics and use it to investigate whether the rate of growth of methane oxidizers in sediments impacts the efficiency of the microbial methane filter. We focus on iron- and methane-rich coastal sediments and, with the model, show that at our site, up to 10% of all methane removed is oxidized by iron and manganese oxides, with the remainder accounted for by oxygen and sulfate. We demonstrate that the slow growth rate of anaerobic methane-oxidizing microbes limits their ability to respond to transient perturbations, resulting in periodic benthic release of methane. Eutrophication and deoxygenation decrease the efficiency of the microbial methane filter further, thereby enhancing the role of coastal environments as a source of methane to the atmosphere.
    MeSH term(s) Geologic Sediments ; Methane ; Anaerobiosis ; Oxidation-Reduction ; Iron ; Sulfates
    Chemical Substances Methane (OP0UW79H66) ; Iron (E1UOL152H7) ; Sulfates
    Language English
    Publishing date 2023-08-16
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1520-5851
    ISSN (online) 1520-5851
    DOI 10.1021/acs.est.3c02023
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Anaerobic methanotrophy is stimulated by graphene oxide in a brackish urban canal sediment.

    Pelsma, Koen A J / van Helmond, Niels A G M / Lenstra, Wytze K / Röckmann, Thomas / Jetten, Mike S M / Slomp, Caroline P / Welte, Cornelia U

    Environmental microbiology

    2023  Volume 25, Issue 12, Page(s) 3104–3115

    Abstract: Anthropogenic activities are influencing aquatic environments through increased chemical pollution and thus are greatly affecting the biogeochemical cycling of elements. This has increased greenhouse gas emissions, particularly methane, from lakes, ... ...

    Abstract Anthropogenic activities are influencing aquatic environments through increased chemical pollution and thus are greatly affecting the biogeochemical cycling of elements. This has increased greenhouse gas emissions, particularly methane, from lakes, wetlands, and canals. Most of the methane produced in anoxic sediments is converted into carbon dioxide by methanotrophs before it reaches the atmosphere. Anaerobic oxidation of methane requires an electron acceptor such as sulphate, nitrate, or metal oxides. Here, we explore the anaerobic methanotrophy in sediments of three urban canals in Amsterdam, covering a gradient from freshwater to brackish conditions. Biogeochemical analysis showed the presence of a shallow sulphate-methane transition zone in sediments of the most brackish canal, suggesting that sulphate could be a relevant electron acceptor for anaerobic methanotrophy in this setting. However, sediment incubations amended with sulphate or iron oxides (ferrihydrite) did not lead to detectable rates of methanotrophy. Despite the presence of known nitrate-dependent anaerobic methanotrophs (Methanoperedenaceae), no nitrate-driven methanotrophy was observed in any of the investigated sediments either. Interestingly, graphene oxide stimulated anaerobic methanotrophy in incubations of brackish canal sediment, possibly catalysed by anaerobic methanotrophs of the ANME-2a/b clade. We propose that natural organic matter serving as electron acceptor drives anaerobic methanotrophy in brackish sediments.
    MeSH term(s) Anaerobiosis ; Nitrates ; Geologic Sediments ; Oxides ; Oxidation-Reduction ; Methane ; Sulfates ; Archaea
    Chemical Substances graphene oxide ; Nitrates ; Oxides ; Methane (OP0UW79H66) ; Sulfates
    Language English
    Publishing date 2023-09-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 2020213-1
    ISSN 1462-2920 ; 1462-2912
    ISSN (online) 1462-2920
    ISSN 1462-2912
    DOI 10.1111/1462-2920.16501
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  7. Article ; Online: Seasonal dynamics of the microbial methane filter in the water column of a eutrophic coastal basin.

    Venetz, Jessica / Żygadłowska, Olga M / Dotsios, Nicky / Wallenius, Anna J / van Helmond, Niels A G M / Lenstra, Wytze K / Klomp, Robin / Slomp, Caroline P / Jetten, Mike S M / Veraart, Annelies J

    FEMS microbiology ecology

    2024  Volume 100, Issue 3

    Abstract: In coastal waters, methane-oxidizing bacteria (MOB) can form a methane biofilter and mitigate methane emissions. The metabolism of these MOBs is versatile, and the resilience to changing oxygen concentrations is potentially high. It is still unclear how ... ...

    Abstract In coastal waters, methane-oxidizing bacteria (MOB) can form a methane biofilter and mitigate methane emissions. The metabolism of these MOBs is versatile, and the resilience to changing oxygen concentrations is potentially high. It is still unclear how seasonal changes in oxygen availability and water column chemistry affect the functioning of the methane biofilter and MOB community composition. Here, we determined water column methane and oxygen depth profiles, the methanotrophic community structure, methane oxidation potential, and water-air methane fluxes of a eutrophic marine basin during summer stratification and in the mixed water in spring and autumn. In spring, the MOB diversity and relative abundance were low. Yet, MOB formed a methane biofilter with up to 9% relative abundance and vertical niche partitioning during summer stratification. The vertical distribution and potential methane oxidation of MOB did not follow the upward shift of the oxycline during summer, and water-air fluxes remained below 0.6 mmol m-2 d-1. Together, this suggests active methane removal by MOB in the anoxic water. Surprisingly, with a weaker stratification, and therefore potentially increased oxygen supply, methane oxidation rates decreased, and water-air methane fluxes increased. Thus, despite the potential resilience of the MOB community, seasonal water column dynamics significantly influence methane removal.
    MeSH term(s) Water/metabolism ; Methane/metabolism ; Seasons ; Methylococcaceae/genetics ; Methylococcaceae/metabolism ; Oxidation-Reduction ; Oxygen/metabolism
    Chemical Substances Water (059QF0KO0R) ; Methane (OP0UW79H66) ; Oxygen (S88TT14065)
    Language English
    Publishing date 2024-01-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 283722-5
    ISSN 1574-6941 ; 0168-6496
    ISSN (online) 1574-6941
    ISSN 0168-6496
    DOI 10.1093/femsec/fiae007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2967: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  8. Article ; Online: Marine pollution: Give more priority to phosphorus studies.

    Slomp, Caroline P

    Nature

    2011  Volume 478, Issue 7370, Page(s) 459

    MeSH term(s) Animals ; Humans ; Phosphorus/analysis ; Phosphorus/supply & distribution ; Recycling
    Chemical Substances Phosphorus (27YLU75U4W)
    Language English
    Publishing date 2011-10-26
    Publishing country England
    Document type Letter ; Comment
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/478459a
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 26: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MG 9: Show issues
    Zs.MO 244: Show issues

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  9. Book ; Thesis: Early diagenesis of phosphorus in continental margin sediments

    Slomp, Caroline P.

    1997  

    Author's details Caroline P. Slomp
    Size 176 S. : graph. Darst., Kt.
    Publishing country Netherlands
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Wageningen, Landbouwuniv., Diss., 1997
    Note Zsfassung in niederländ. Sprache
    Remark Abt. Nussallee/Bereichsbibl. ZBMed: AY 18383
    HBZ-ID HT007567635
    ISBN 90-5485-684-X ; 978-90-5485-684-9
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    978/1802 available for loan (reading room) Freihandmagazin (U1)

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  10. Article: Anthropogenic and Environmental Constraints on the Microbial Methane Cycle in Coastal Sediments.

    Wallenius, Anna J / Dalcin Martins, Paula / Slomp, Caroline P / Jetten, Mike S M

    Frontiers in microbiology

    2021  Volume 12, Page(s) 631621

    Abstract: Large amounts of methane, a potent greenhouse gas, are produced in anoxic sediments by methanogenic archaea. Nonetheless, over 90% of the produced methane is oxidized via sulfate-dependent anaerobic oxidation of methane (S-AOM) in the sulfate-methane ... ...

    Abstract Large amounts of methane, a potent greenhouse gas, are produced in anoxic sediments by methanogenic archaea. Nonetheless, over 90% of the produced methane is oxidized via sulfate-dependent anaerobic oxidation of methane (S-AOM) in the sulfate-methane transition zone (SMTZ) by consortia of anaerobic methane-oxidizing archaea (ANME) and sulfate-reducing bacteria (SRB). Coastal systems account for the majority of total marine methane emissions and typically have lower sulfate concentrations, hence S-AOM is less significant. However, alternative electron acceptors such as metal oxides or nitrate could be used for AOM instead of sulfate. The availability of electron acceptors is determined by the redox zonation in the sediment, which may vary due to changes in oxygen availability and the type and rate of organic matter inputs. Additionally, eutrophication and climate change can affect the microbiome, biogeochemical zonation, and methane cycling in coastal sediments. This review summarizes the current knowledge on the processes and microorganisms involved in methane cycling in coastal sediments and the factors influencing methane emissions from these systems. In eutrophic coastal areas, organic matter inputs are a key driver of bottom water hypoxia. Global warming can reduce the solubility of oxygen in surface waters, enhancing water column stratification, increasing primary production, and favoring methanogenesis. ANME are notoriously slow growers and may not be able to effectively oxidize methane upon rapid sedimentation and shoaling of the SMTZ. In such settings, ANME-2d (
    Language English
    Publishing date 2021-02-18
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2021.631621
    Database MEDical Literature Analysis and Retrieval System OnLINE

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