Pervasive aquatic vegetation organic carbon losses in China's lakes

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 963, P. 178548 - 178548

Published: Jan. 20, 2025

Language: Английский

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Diatoms: An Important Biomonitoring and Bioindicator Tool of Aquatic Ecosystems with Potential in Novel Nanomaterial Synthesis and Downstream Applications in Pollutant Removal

Published: Jan. 1, 2025

Language: Английский

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Additionality in Blue Carbon Ecosystems: Recommendations for a Universally Applicable Accounting Methodology

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(11)

Published: Nov. 1, 2024

ABSTRACT Blue carbon ecosystems (BCEs) remove dioxide from the atmosphere and store significant amounts of organic (OC) in their soils. Consequently, protection restoration BCEs may contribute to net greenhouse gas emissions abatement help address global challenges both mitigating adapting climate change. An ongoing debate is whether OC sequestered out with blue (BC) project transported its present location (allochthonous) should be counted as ‘additional’. There are inconsistencies treatment allochthonous between BCE methodologies, potentially undermining credibility BC accounting initiatives. To explore these inconsistences, we compare methodologies which were able find online, particular focus on VERRA, IPCC BlueCAM review science underlying any approach account for OC. Our findings indicate that there currently no robust scientific approaches define an appropriate apportioning discounting calculation additionality. We therefore advocate inclusion crediting projects when observational experimental does not support (and discounting) refractory contribution.

Language: Английский

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Process-based modeling for ecosystem service provisioning: Non-linear responses to restoration efforts in a quarry lake under climate change

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 348, P. 119163 - 119163

Published: Oct. 10, 2023

Healthy freshwater ecosystems can provide vital ecosystem services (ESs), and this capacity may be hampered due to water quality deterioration climate change. In the currently available ES modeling tools, processes are either absent or oversimplified, hindering evaluation of impacts restoration measures on provisioning. study, we propose an tool that integrates lake physics, ecology service provisioning into a holistic framework. We applied model Dutch quarry lake, evaluate how nine ESs respond technological-based (phosphorus (P) reduction) nature-based (wetland restoration). As change might affecting future effectiveness efforts, also studied outcome ESs, using scenarios for Netherlands in 2050. Our results indicate both phosphorus reduction wetland mitigated eutrophication symptoms, resulting increased oxygen concentrations transparency, decreased phytoplankton biomass. Delivery most was improved, including swimming, P retention, macrophyte habitat, whereas required more productive system impaired (sport fishing bird watching). However, our suggested upon exposure conditions, which require intensification efforts meet targets. Importantly, showed non-linear responses increasing intensity measures, indicating does not necessarily increase proportionally. conclusion, framework proposed provides provisioning, contribute development climate-robust management strategies.

Language: Английский

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Small carbon stocks in sediments of Baltic Sea eelgrass meadows

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 10

Published: Aug. 16, 2023

Seagrass meadows act as an effective carbon sink and store in the sediments for substantial periods of time. The drivers sequestration are complex, global regional estimates stocks have large uncertainties. Here, we report new stock from 14 sites along Swedish coast compile existing literature to estimate magnitude Zostera marina (eelgrass) Baltic Sea. Eelgrass Sea considerably lower content (0.25 ± 0.21% DW, 635 321 g C m -2 ) than Kattegat-Skagerrak region (3.25 2.78% 3457 3382 average temperate regions general (1.4 0.4% 2721 989 ). Unfavorable growing conditions eelgrass often lead occurring areas high hydrodynamics, preventing significant accumulation. Stable isotopes revealed that dominating source organic was planktonic, further highlighting not major reservoirs comparison unvegetated other seagrass areas. results also highlight environmental drive intraspecific variation on spatial scales. Overall, potential small compared regions.

Language: Английский

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Carbon Sequestration Capacity of the Lagos Lagoon: Examining the Potentials of a Typical Nigerian Coastal Ecosystem for Climate Change Mitigation

Transylvanian Review of Systematical and Ecological Research, Journal Year: 2024, Volume and Issue: 26(2), P. 1 - 16

Published: Aug. 1, 2024

Abstract Carbon sequestration capacity of the Lagos Lagoon was studied through a six-month analysis carbon surrogates. The findings revealed that water samples from inorganic surrogates yeilded higher values than those organic carbon. Sediment recorded DOC, DIC, TOM, TIM, and TOC. Correlation studies indicate TOM were principal determinants trends observed in most parameters. A total 1.5 × 5.3 10 −11 t CO 2 eq ha −1 , sequestered surface water, while sediment, lagoon demonstrated potential 2.13 −6 . Biomass benthic macrofauna populations major contributor to stock sequestered. low value can be attributed wide-scale human disturbances taking place lagoon.

Language: Английский

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Seasonal dynamics of a glycan‐degrading flavobacterial genus in a tidally mixed coastal temperate habitat

Environmental Microbiology, Journal Year: 2023, Volume and Issue: 25(12), P. 3192 - 3206

Published: Sept. 18, 2023

Coastal marine habitats constitute hotspots of primary productivity. In temperate regions, this is due both to massive phytoplankton blooms and dense colonisation by macroalgae that mostly store carbon as glycans, contributing substantially local global sequestration. Because they control energy fluxes, algae-degrading microorganisms are crucial for coastal ecosystem functions. Environmental surveys revealed consistent seasonal dynamics alga-associated bacterial assemblages, yet resolving what factors regulate the in situ abundance, growth rate ecological functions individual taxa remains a challenge. Here, we specifically investigated abundance activity well-known alga-degrading flavobacterial genus tidally mixed habitat Western English Channel. We show members Zobellia stable, low-abundance component healthy macroalgal microbiota can also colonise particles water column. This undergoes recurring variations with higher abundances winter, significantly associated biotic abiotic variables. become dominant part communities on decaying macroalgae, showing strong high estimated rates. These results provide insights into environmental constraints driving natural populations bacteria influence cycling.

Language: Английский

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Terrestrial Support of Aquatic Food Webs via an Overlooked Pathway—Inorganic Carbon and its Significance to Global Carbon Cycle

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: March 29, 2023

Abstract Freshwater ecosystems receive substantial terrestrial organic matter (t-OM) from surrounding landscapes. How the t-OM is transferred affects aquatic food webs and global carbon budgets. Previous studies have emphasized support of via direct subsidy, overlooking dissolved inorganic (DIC) pathway, that is, DIC decomposition used by primary producers, supporting higher trophic levels. Using 2-year 13 C 15 N measurements phytoplankton, zooplankton, plants, sediments, particulate seasonal wetlands, we found while zooplankton (mid-trophic consumers) directly in January, March May were mainly supported phytoplankton recycled mineralization methanogenesis. The dominance this pathway tightly coupled with characteristics these systems. Mineralization methanogenesis rich fresh resulted supersaturated CO 2 high CH 4 emissions. Atmospheric diffusion significantly enriched δ DIC, leading to wide variations between -12.4 6.7 ‰, which provided ideal conditions quantify cycling widespread but understudied ecosystems. Our findings draw attention potentially emissions temporary freshwater are being increasingly common under warming climate.

Language: Английский

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Towards climate-robust aquatic ecosystem restoration : Lessons learned from controlled experiments and modeling

Published: Jan. 1, 2023

ys t e m ( Spe c Vi w, Uc kf i l d, Uni d Ki ngdom) a +/ -0.

Language: Английский

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