Biogeochemistry最新文献

{"title":"Microalgae-based removal and biodegradation of antibiotics: mechanisms, synergistic consortia, and engineering prospects","authors":"Jun Liu,Jiajie Zhang,Menglei Jiang,Xinru Lin,Cuiying Peng","doi":"10.1007/s10532-026-10393-9","DOIUrl":"https://doi.org/10.1007/s10532-026-10393-9","url":null,"abstract":"","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"237 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149209710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biogeochemistry meets biogeography: how trait-based approaches can help us understand tropical legumes","authors":"Jennifer S. Powers,Sarah A. Batterman,Catherine Hulshof","doi":"10.1007/s10533-026-01376-2","DOIUrl":"https://doi.org/10.1007/s10533-026-01376-2","url":null,"abstract":"","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"14 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149209709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fire removes preexisting pyrogenic organic matter from the ecosystem through the mechanisms of both direct combustion and increasing mineralizability","authors":"Mengmeng Luo,Kara Yedinak,Keith Bourne,Thea Whitman","doi":"10.1007/s10533-026-01380-6","DOIUrl":"https://doi.org/10.1007/s10533-026-01380-6","url":null,"abstract":"","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"411 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149209708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Land conversion impacts on soil and above-ground microbial nitrous oxide consumption in tropical peatlands","authors":"Laura Kuusemets,Ramita Khanongnuch,Ülo Mander,Maarja Öpik,Lulie Melling,Karmel Kikas,Jaan Pärn,Kaido Soosaar,Mikk Espenberg","doi":"10.1007/s10533-026-01379-z","DOIUrl":"https://doi.org/10.1007/s10533-026-01379-z","url":null,"abstract":"Abstract As tropical peatlands in Southeast Asia are increasingly drained for agriculture, the net effect of this conversion on nitrous oxide (N 2 O) emissions remains unclear. We examined how this land-use change affects nitrogen (N) cycling by comparing two contrasting tropical peat ecosystems in Sarawak, Malaysia: a managed oil palm plantation and a pristine peat swamp forest. We measured soil N 2 O and dinitrogen (N 2 ) emissions, and for microbial functional and structural community and diversity, we quantified the abundances of N cycle functional genes and conducted metagenomic sequencing of microbial communities from below-ground (peat soil and litter) and above-ground (canopy soil and tree leaves) ecosystem compartments. The oil palm plantation soil was a significant N 2 O emitter (65.48 ± 43.18 μg N m −2  h −1 ), whereas the peat swamp soil acted as a near-complete N 2 O sink (0.89 ± 1.18 μg N m −2  h −1 ). Soil microbial communities played a central role in N transformations, with the genus Roseiarcus being the strongest predictor of soil N 2 O emissions, and Paludisphaera most strongly linked to soil N 2 O sink capacity. Oil palm leaves harboured approximately 89% of ammonia-oxidizing bacteria (AOB) per hectare relative to other studied ecosystem compartments (soil and canopy soil) within the oil palm plantation. High N 2 O consumption potential by tropical tree leaves ( Shorea albida and Combretocarpus rotundatus ) indicated that the above-ground compartments contribute substantially—up to two-thirds—to N 2 O uptake in peat swamp forests, as estimated using a scaling approach based on microbial functional gene abundances. Land-use change replaces diverse plant species communities with monoculture oil palm plantations, eliminating specific tree species and their associated soil-leaf-microbe interactions that affect N 2 O emissions and climate effects.","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"54 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149209725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early post-fire mobilization of levoglucosan distinctly contrasts black carbon dynamics in small coastal mountain watersheds","authors":"Riley Barton,Sasha Wagner,Christina M. Richardson,Alex Collins,Margaret A. Zimmer,Maya Montalvo,Allison N. Myers-Pigg","doi":"10.1007/s10533-026-01367-3","DOIUrl":"https://doi.org/10.1007/s10533-026-01367-3","url":null,"abstract":"","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"10 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Large mammalian herbivores influence the deployment of microbial extracellular enzymes to control soil carbon cycling","authors":"Shamik Roy,&nbsp;Sumanta Bagchi","doi":"10.1007/s10533-026-01378-0","DOIUrl":"10.1007/s10533-026-01378-0","url":null,"abstract":"<div><p>Large mammalian grazers have regulated biogeochemical cycles across 40% of the Earth’s terrestrial surface for millennia. While grazer effects on organic matter entering the soil are becoming clear, their effect on the downstream microbial foraging through extracellular-enzymes (EE), which link processes at the cellular level to ecosystem-level flow of matter remain less clear. We assessed how large mammalian grazers influence microbial foraging in soil using two lines of evidence. First, utilising a 14-year-old long-term grazer-exclusion experiment in the Trans-Himalayan ecosystem, we find that activities of seven enzymes peak at different months during the growing-season in an asynchronous manner. Microbial deployment of enzymes responded to grazer-exclusion by shifting from nitrogen (N)-acquisition in spring to carbon (C)- and phosphorus (P)-acquisition in summer and autumn. Grazer exclusion increased peroxidase activity by 124.7% and β-glucosidase by 16.7%. About half of the variation in enzyme portfolios was explained by seasonal differences in grazer effects. Grazer-exclusion increased the variability in the enzyme portfolio, requiring the microbes to forage across a larger portion of the functional space. Structural equation models suggested that grazer-exclusion worsens the quality of biomass input to soil due to an 18% increase in acid-unhydrolysable recalcitrant C. As seen in other ecosystems, this decline in substrate quality raises microbial deployment of generic depolymerizers relative to the specialized enzymes which release assimilable end-products. As greater investment in generic depolymerizing enzymes may reduce microbial carbon use efficiency, it can affect the C cycle. Second, laboratory incubations supported that soil enzymes are indeed inducible/repressible in response to experimental manipulation of biomass quality. Microbial responses appear predictable and generalisable across spatial scales, from laboratory-incubations to whole ecosystems. Hence, fostering microbial functions can enhance the scope and efficacy of rewilding and restoration for natural climate solutions.</p></div>","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"169 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10533-026-01378-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Root trait controls on rhizosphere priming effects during early-stage litter decomposition in anoxic peat","authors":"Namid Krüger,&nbsp;Maxim Dorodnikov,&nbsp;Simon Thomsen,&nbsp;Klaus-Holger Knorr,&nbsp;Peter Mueller","doi":"10.1007/s10533-026-01373-5","DOIUrl":"10.1007/s10533-026-01373-5","url":null,"abstract":"<div><p>Litter represents the transitional stage between plant biomass and soil organic carbon, with its transformation influenced by overlying vegetation. Plant regulation of litter decomposition through priming effects in wetlands represents an important knowledge gap, as roots influence rhizosphere processes differently than in upland soils by releasing both exudates and oxygen into the otherwise water-saturated, oxygen-depleted soil matrix. To investigate the role of plants in rhizosphere priming in anoxic wetlands, two sedge species with contrasting belowground traits (rhizomatous vs. tussock-forming) were grown on uniformly carbon-13-labeled litter in waterlogged peat in a greenhouse microcosm experiment. Litter-derived respiration affected by sedge roots was quantified using a two-end-member mixing model. Rhizosphere enzyme activities were mapped using zymography, while oxygen and carbon dioxide (CO₂) dynamics were visualized using planar optode imaging. Litterbag mass loss was determined gravimetrically. Cumulative litter-derived CO₂ respiration was 87% higher under rhizomatous <i>Eriophorum angustifolium</i> and 106% higher under tussock-forming <i>E. vaginatum</i> than in the unplanted treatment, whereas litter mass loss was only 10 and 19% higher in the planted treatments, respectively. Initial positive priming effects of &gt; + 200% declined to negative priming of &lt; − 20% within 3 months in both planted treatments. In both species, β-glucosidase activity was elevated around mature roots, while acid phosphatase activity was elevated across the entire root system compared with background levels. Our study provides experimental evidence that sedges enhance early-stage litter decomposition in anoxic peat regardless of their belowground morphological traits, likely through root oxygen loss and stimulation of rhizosphere enzyme activity.</p></div>","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"169 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10533-026-01373-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbial carbon processing in a riparian soil: a microcosm experiment on responses to native vs. invasive root input","authors":"Aira Sacha Ferrer,&nbsp;Katherine Muñoz,&nbsp;Thanh-Thuy Nguyen,&nbsp;Dörte Diehl","doi":"10.1007/s10533-026-01377-1","DOIUrl":"10.1007/s10533-026-01377-1","url":null,"abstract":"<div><p>Invasive plant species can alter belowground biogeochemical processes, but the specific dynamics and mechanisms associated with these shifts remain unclear. We compared the effects of aqueous root extracts from the invasive <i>Impatiens glandulifera</i> and the native <i>Urtica dioica</i> on the carbon processing and functional stability of non-invaded riparian soil. In a 21-day laboratory incubation, we amended soil with two concentration levels of root extracts to simulate root lysis and exudation. We assessed microbial responses by measuring respiration rates (MicroResp™) and enzyme activities, while the stoichiometric properties of the root extracts were characterized by dissolved carbon (DC), nitrogen (DN), and total phenolics (TPC). We found that <i>I. glandulifera</i> extracts did not suppress microbial activity. Instead, plant origin of the root extract (<i>U. dioica</i> or <i>I. glandulifera</i>) determined the physiological efficiency of the community. The addition of native <i>U. dioica</i> extracts was able to support biomass accretion indicated by high substrate-induced respiration. Conversely, <i>I. glandulifera</i> extracts triggered a state of relatively higher basal respiration but low biomass formation resulting in lower physiological efficiency. By stoichiometric modelling we identified the dissolved carbon-to-nitrogen ratio as the primary driver of this inefficiency. Temporal dynamics were governed more by substrate concentration rather than plant origin. Low-dose treatments of both species exhibited “boom-and-bust” dynamics likely driven by rapid labile depletion and necromass recycling, whereas high-dose treatments exhibited a monotonic response. Furthermore, temporal spikes in TPC were linked to the possible enzymatic “unmasking” of reactive moieties as the labile fraction was selectively harvested. Overall, our findings indicate that changes in soil organic carbon cycling may be better explained by the stoichiometric quality of root input than by the biogeographic status of the plant itself.</p></div>","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"169 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10533-026-01377-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methane rhizospheric oxidation and its ecosystem significance across different aquatic plant species","authors":"Charlotte Grasset","doi":"10.1007/s10533-026-01374-4","DOIUrl":"10.1007/s10533-026-01374-4","url":null,"abstract":"<div><p>Vegetated inland water habitats are important global emitters of methane (CH₄), but the variability in their CH₄ emission is poorly understood, making estimates and predictions uncertain. Methane is believed to be primarily released into the atmosphere via plant lacunal tissues in dense vegetated zones, although experiments have also shown that a large fraction of CH₄ can be consumed in the rhizosphere before it diffuses into the roots. Methane rhizospheric oxidation measurements have been limited to few species in situ, and it is still unclear how it differs between species. To determine the implications of CH₄ rhizospheric oxidation for plant-CH₄ release, I measured CH₄ rhizospheric oxidation and transport rates for 11 plant species with different gas transport efficiencies using dual isotopes in situ. Overall, the fraction of CH₄ produced that was oxidized was higher for plants that transport gases efficiently (up to 81%), and was negatively correlated to plant CH₄ release. These findings suggest that CH₄ oxidation decreases CH₄ release from plants that efficiently transport gases, although further studies are needed to assess the causality of this relationship. Such mechanistic understanding of plant-CH₄ release is necessary to define aquatic plant functional types with contrasting CH₄ emissions, and to reduce uncertainties in estimates of CH₄ freshwater emissions.</p></div>","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"169 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10533-026-01374-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149035103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dissolved organic matter addition alters diel nitrogen and phosphorus uptake downstream of a wastewater treatment plant effluent","authors":"David Pineda-Morante,Miquel Ribot,Susana Bernal,Anna Lupon,Sara Castelar,Esperança Gacia,Stephanie N. Merbt,Francesc Sabater,Helena Guasch,Eugènia Martí","doi":"10.1007/s10533-026-01363-7","DOIUrl":"https://doi.org/10.1007/s10533-026-01363-7","url":null,"abstract":"Abstract Wastewater treatment plant (WWTP) effluents deliver high loads of dissolved inorganic nitrogen (DIN) and soluble reactive phosphorus (SRP) to receiving streams and can generate dissolved organic carbon (DOC): nutrient imbalances, potentially constraining microbial DIN and SRP processing and increasing downstream nutrient export. We hypothesized that increasing bioavailable DOC supply and altering DOC: nutrient stoichiometry would stimulate heterotrophic activity and enhance in-stream DIN and SRP uptake downstream of a WWTP effluent. We conducted a four-day reach-scale enrichment with a brewery-derived dissolved organic matter (DOM) solution rich in bioavailable DOC in a Mediterranean headwater stream fed exclusively by WWTP effluent. Hourly samples were collected upstream and at two downstream stations relative to the DOM injection point to quantify spatiotemporal variation in net nutrient uptake. Stoichiometric analysis suggested that heterotrophic nutrient uptake was constrained by DOC and DIN relative to high SRP availability. DOM enrichment partly alleviated DOC limitation, and rapid net DOC removal occurred within the first meters downstream of the injection point, coinciding with strong oxygen depletion and benthic mat development. During enrichment, the reach shifted from net DIN source to sink, mainly through enhanced nitrate uptake. Ammonium uptake showed a weaker, more localized, and diel-dependent response, whereas no clear effect was detected for SRP uptake. Despite enhanced local uptake, whole-reach reductions in DIN and SRP export remained &lt; 15% relative to WWTP nutrient loads. Overall, our results support using system-specific C:N:P stoichiometry to guide DOC-based nutrient attenuation strategies by identifying C, N, and P limitation or excess in WWTP-receiving streams.","PeriodicalId":8901,"journal":{"name":"Biogeochemistry","volume":"9 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}