#sediments

Dr Catherine Russell

@seddyrocks.bsky.social

1 week ago

Figure 6. from Russell 2025. Photographs demonstrating anthropogenic sedimentological deposits in a range of environments. The names of each deposit are: A – Combined Anthroglomerate, B – Structureless Organoplastic, C – Baffled Silicimetallic, D – Structureless Organoplastic, E – Stratified Anthroglomerate, and F – Uni-directional Siliciplastic.

It was a lovely surprise this morning to see my work on #anthropogenic #sediments featured in the 100th edition of the #AAPG's Core Elements newsletter!

Read it here: bit.ly/4soe5Id

It is so cool to see these “non-traditional” ideas finding a place within long-established #geoscience communities😆⚒️

Anthropocene Sediment Network

@anthrosednet.bsky.social

2 weeks ago

How are we sinking and shaping #coastal plains?

Kay Koster looks at land #subsidence in the #Netherlands, where #anthropogenic #sediments have been used for centuries to stabilise low-lying land, but can also drive subsidence through compaction, drainage, and loading.

Full video on our website!

Dr Kaja Fenn (she/her)

@drloessismore.bsky.social

3 weeks ago

#Quaternary #sediments #landscape #Tasmania #Geomorphology #geography #aeolian

JGR: Earth Surface

@jgrearthsurface.bsky.social

3 weeks ago

New in JGR: Earth Surface Increased Glacier Melt Across Millennia to Hours Enhances Erosion and Sediment Export Processes By Delaney et al 2026

A new Commentary summarizes recent research about the sensitive response of subglacial erosion and sediment export to changing hydro-climatic conditions across millennia to hours.

🔗Check it out: doi.org/10.1029/2025...

#AGUPubs #ClimateChange #Glaciers #Erosion #Sediments #EarthScience

@pebblepupanna.bsky.social

1 month ago

#sediments #geoscientist
🏔️❄️🥾⛏️

Tony R. Walker

@tonyrwalker1.bsky.social

1 month ago

Multiple contaminant ecological risk evaluation in small craft harbour sediments in Nova Scotia, Canada Small craft harbours are vital for the fishing industry and have high socioeconomic and cultural importance for surrounding communities. Presence of p…

Multiple contaminant ecological risk evaluation in small craft harbour sediments in Nova Scotia, Canada 🇨🇦

#ecologicalrisk
#sediments
#contaminants

www.sciencedirect.com/science/arti...

Tony R. Walker

@tonyrwalker1.bsky.social

1 month ago

➡️ #Microplastics are also a diverse #contaminant suite that are ubiquitous in the Canadian #environment.

➡️ We reviewed reviewed studies across Canada that reported microplastics in #freshwater and #seawater, #sediments, #soils, #air, #snow, and, in biota.

Mike Jetten

@msmjetten.bsky.social

2 months ago

Response of the anammox bacterial community in Poyang Lake sediments to changes in the hydrological regime - Aquatic Ecology Anammox bacteria play an important role in the nitrogen cycle within freshwater ecosystems. However, it is not yet known how their communities in floodplain lakes respond to hydrological regime change...

Response of the #anammox bacterial community in Poyang Lake #sediments to changes in the hydrological regime link.springer.com/article/10.1...

@gretabrancaleoni.bsky.social

2 months ago

INQUA 2027 - CALL FOR PAPERS: Session: 21 Human-environment interactions and socio-ecological trajectories during the Quaternary from the Mediterranean basin to Central Asia.
#INQUA27 @inquaecr.bsky.social #sediments #humans #heritage

Aigoaldi

@aigoaldi.bsky.social

2 months ago

Moellons de marnes (Navarre)
#bardenas #spain #navarre #texture #sediments #waves #landscape #photography #clay

Aigoaldi

@aigoaldi.bsky.social

2 months ago

Draperies géologiques des Bardenas (Navarre)
#bardenas #spain #navarre #texture #sediments #waves #landscape #photography

Journal of Engaging Science, Technology, and Society (ESTS)

@estsjournal.bsky.social

3 months ago

Piles of soil at the interface of a road and a water body. Photograph by the authors.

In this #collaborative engagement, Zahirah, Klein, Bogart, Keller, Huang & Gutierrez explore the potential of #sediments in #CoastalEnvironments for rethinking the #entanglements of history, policy + national #developmentalism in #SoutheastAsia

👀 https://doi.org/qhcm

MUSER PRESS

@muser.press

3 months ago

As ice thins, Antarctic mountains reveal a hidden iron supply to the ocean • Muser Press As Antarctica's ice sheets thin due to climate change, newly exposed mountain peaks could significantly increase the supply of vital nutrients to the Southern Ocean

A study in Nature Communications shows that exposed Antarctic mountains produce iron-rich #sediments that #glaciers move toward the Southern Ocean, supporting phytoplankton and long-term #carbon absorption over millennia. DOI: doi.org/10.1038/s414...

Jana Eichel

@alpinebiogeo.bsky.social

4 months ago

Why sediments matter for mountain biogeomorphology Grain size distributions, sediment and soil chemistry control feedback between plants and geomorphic processes across alpine hillslopes. With our developed workflow, this key sedimentological data ca...

On #mountain slopes, we previously found strong feedbacks between #geomorphic processes, #landforms and #plants. But what about #sediments? Do they matter for #biogeomorphic feedbacks? If yes, which sediment properties should we measure and how? Have a look! onlinelibrary.wiley.com/doi/10.1002/...

BotDeLaChatte

@lebotdelachatte.bsky.social

4 months ago

Bourbonien de la chatte

Le Bourbonien désigne une période géologique du Crétacé, marquée par des sédiments d'origine marine déposés dans un environnement marin entre 145 et 100 millions d'années. #Bourbonien #periode #geologie #cretace #sediments

Paleo IPE

@paleoipe.bsky.social

4 months ago

Our colleague Ana Moreno @amorenocab.bsky.social holds a PhD in Geology. She reconstructs past climate changes that occurred over a few decades to better understand their analogies with today’s #climatechange. She works with #stalagmites, #ice deposits in #caves, and #lake #sediments! #Geoscience

Microbes.Info

@microbesinfo.bsky.social

4 months ago

Scientists Discover Microbes That “Breathe” Iron to Detoxify the Planet Microbiologists discover bacteria that eliminate toxic sulfide and use iron minerals to grow. An international group of researchers led by microbiologists Marc Mussmann and Alexander Loy at the…

#Microbes that “breathe” #iron to detoxify the #planet ...

| #bacteria | #sulfide | #sediments | #wetlands | #biogeochemical | #redox | By @univie.ac.at via @scitechdaily.com.web.brid.gy

Tony R. Walker

@tonyrwalker1.bsky.social

4 months ago

Distribution of microplastics in mangrove sediments: role of biogeomorphology - Journal of Oceanology and Limnology Biogeomorphic features are common in mangrove ecosystems worldwide, particularly crab burrows, which play a vital role in shaping regional material cycling processes. This study provides new insights ...

Distribution of #microplastics in mangrove #sediments: role of #biogeomorphology

link.springer.com/article/10.1...

Tony R. Walker

@tonyrwalker1.bsky.social

4 months ago

#Microplastics were found in remote #Newfoundland lake #sediments at concentrations up to 24,000 microplastics/kg wet weight.

Tony R. Walker

@tonyrwalker1.bsky.social

5 months ago

Impact of Microplastics on Microbial Community Composition and Diversity in Surface Flow Constructed Wetland Sediments - Arabian Journal for Science and Engineering Accumulation of microplastics (MPs) in sediments threatens wetland ecosystems, yet the impacts of distinct microplastic types on sediment microbial community and biogeochemical cycling remain poorly understood. This study investigates the impacts of conventional polyvinyl chloride (PVC) and biodegradable polylactic acid (PLA) MPs, at concentrations of 0%, 1%, and 5%, on microbial community composition and diversity in constructed wetland (CW) sediments. Both PVC and PLA MPs increased microbial α-diversity (Shannon index up to 6.4%) but reduced evenness (Simpson index decreased by 40.3%) and altered β-diversity (p < 0.05). Microplastics decreased the abundance of bacteria while increasing that of archaea and eukaryotes. PVC MPs significantly enriched Acidovorax and Magnetospirillum genera associated with denitrification, while PLA MPs significantly enriched Anaerolinea in denitrification and Clostridium in methanogenesis. Results revealed that 5% microplastic exposure significantly increased the abundance of methanogenic enzymes, particularly under PLA exposure. PVC MPs increased the abundance of denitrification enzymes, while PLA MPs promoted the abundance of amino acid metabolism enzymes. This study offers a novel analysis of the impacts of different microplastic types and concentrations on microbial community composition and diversity in wetland sediments, providing valuable insights into the ecological risks posed by MPs in wetland ecosystems and emphasizing the need for further research on their environmental impacts.

Impact of #Microplastics on #Microbial Community Composition and Diversity in Surface Flow Constructed #Wetland #Sediments

link.springer.com/article/10.1...

Adam Porter

@ap3489.bsky.social

5 months ago

Fascinating talk from @sarabenelli.bsky.social about the role of macrophytes and macrofauna in controlling freshwater #biogeochemistry and keeping methane locked into #sediments. Really interesting seeing this next to our marine work!

@bes-aquaticgroup.bsky.social @zslofficial.bsky.social

💧🌏 Greg Cocks

@kiwiincolorado.bsky.social

6 months ago

#GrandCanyon #Landslide #Dam & #Paleolake Triggered By The #Meteor #Crater Impact At 56 Ka
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doi.org/10.1130/G535...
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#geology #water #hydrology #massmovement #Nankoweap #ColoradoRiver #earthquake #seismic #dating #radiocarbon #Pleistocene #sediments #elevation #geomorphology #geomorphometry

@pebblepupanna.bsky.social

6 months ago

#reefs #silicilastic #sediments #coexist #NewCaledonia

Kau)))

@carbon8.bsky.social

6 months ago

A picture of Dr. Arvind Singh on stage at ICP15, with him in the bottom left corner (under a spotlight) and a screen behind him with a slide that is titled "Mechanisms to understand the oxygen changes"

Happening now at #ICP15: Arvind Singh from Physical Research Labs, Ahmedabad, talks about #iodine (I/Ca) measurements in planktic #foraminifera from Arabian Sea #sediments recording glacial-era expansion of the oxygen minimum zone.

Mike Jetten

@msmjetten.bsky.social

6 months ago

Anammox and denitrifying bacteria and their nitrogen removal potential in lake sediments mediated by environmental changes - Marine Life Science & Technology Anammox and denitrification are key processes for nitrogen removal in lake sediments. However, how environmental changes mediate the community structure and functional genes of nitrogen removal bacter...

#Anammox and #denitrifying bacteria and their #nitrogen removal potential in lake #sediments mediated by environmental changes
link.springer.com/article/10.1...

Mike Jetten

@msmjetten.bsky.social

7 months ago

The Role of Sediments in Modulating Nitrous Oxide Production in the Southern Benguela Upwelling System: Insights From Stable Isotopic Tracers Nitrous oxide accumulates on the hypoxic Southern Benguela Upwelling System shelf in late-summer Isotopic evidence reveals that nitrous oxide in the water column is predominantly of sedimentary o...

The Role of #Sediments in Modulating #Nitrous Oxide Production in the Southern Benguela Upwelling System: Insights From Stable Isotopic Tracers
agupubs.onlinelibrary.wiley.com/doi/full/10....

Evgenii Protasov

@evgenii-protasov.bsky.social

7 months ago

Metabolic features that select for Bathyarchaeia in modern ferruginous lacustrine subsurface sediments Abstract. Ferruginous conditions prevailed through Earth’s early oceans history, yet our understanding of biogeochemical cycles in anoxic iron-rich, sulfat

Metabolic features that select for Bathyarchaeia in modern ferruginous lacustrine subsurface sediments
#microbiology #archaea #sediments
@isme-microbes.bsky.social
academic.oup.com/ismecommun/a...

RiscBal

@riscbal.bsky.social

8 months ago

Persistence of wildfire effects on soil colour: implications for sediment tracing in burned catchments - Journal of Soils and Sediments Purpose This study analyses the capacity of soil colour parameters to discriminate sediment origin in terms of channel banks, burned surface soil and unburned surface soil in a fire-affected catchment...

Nou article del grup de recerca RiscBal al Journal of Soils and Sediments.
"Persistence of wildfire effects on soil colour: implications for sediment tracing in burned catchments"
Article: link.springer.com/article/10.1...
RiscBal - @uib.cat
#RiscBal #Incendis #Sediments #SoilColour #PostFire

EEES Clemson University

@eees-clemsonu.bsky.social

8 months ago

Effect of seasonal anoxia on geochemical cycling in a stratified pond: Comparison to cooler pond conditions 40 years ago Seasonal stratification in temperate lakes deeper than a few meters creates favorable conditions for pronounced vertical redox zones, often resulting …

Another great paper published by Fanny Coutelot. It shows how raising water temperatures are affecting the release of elements like #arsenic, #iron, and #manganese in #sediments. She is a research faculty in our #Environmental #Engineering program. Check out her recently published paper.