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The Amoeba Lab

@amoeba-lab.bsky.social

David Evans and the ‘Amoeba’ Lab at the University of Southampton (UK), researching (foraminifera) biomineralisation and climate change in Earth’s past

96 Followers  |  142 Following  |  8 Posts  |  Joined: 18.01.2025  |  1.82

Latest posts by amoeba-lab.bsky.social on Bluesky

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Changes in host gene expression patterns underpin responses of the coral Stylophora pistillata to nutrient stress - Scientific Reports Scientific Reports - Changes in host gene expression patterns underpin responses of the coral Stylophora pistillata to nutrient stress

New Paper Alert!! Tessa Page and others show how corals deal with low or unbalanced nutrients www.nature.com/articles/s41...
The main issue is lack of P that causes them to upregulate P-transporter genes and likely consume their symbionts and bleach! 🪸🌊🧪

05.08.2025 08:23 — 👍 6    🔁 3    💬 0    📌 1
211-0241/25-2N Tenure-track Assistant Professor and Curator in Mineralogy at Natural History Museum Denmark

🎉Are you a mineralogist who also loves museums? 🎉
Come join the Natural History Museum Denmark! We are looking for an assistant professor and curator of mineralogy. Advert can be found below, but apply soon! Deadline is 11th August😱

candidate.hr-manager.net/ApplicationI...

29.07.2025 15:57 — 👍 5    🔁 6    💬 1    📌 0
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Ten years of Tridacna sclerochemistry at up to daily resolution from a controlled aquarium environment – Records of habitat change, induced seasonality and growth variability Giant clams such as Tridacna sp., with their rapid shell accretion (mm-cm/year), decade-long lifespans and aragonitic shells, are invaluable (palaeo)e…

Fascinating study on a #giantclam that was kept in the Dutch @burgerszoo.bsky.social aquarium for a decade and recorded changes in it's (semi)controlled environment in its shell. These types of growth experiments allow us to use shells as archives of past change
www.sciencedirect.com/science/arti...

19.05.2025 08:11 — 👍 4    🔁 4    💬 0    📌 0
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If you can't be with the forams you love, love the forams you're with #Ammonia

03.05.2025 21:08 — 👍 22    🔁 3    💬 1    📌 0

👇🏼extended #ICP15 deadlines to submit abstracts and complete registration -5th May!

02.05.2025 09:26 — 👍 5    🔁 3    💬 0    📌 0
Cover of the latest issue of Elements Magazine called Biomineral Geochemisty: Windows into Past Climates and Calcification.  The cover shows a picture of small clusters of amorphous calcium carbonate

Cover of the latest issue of Elements Magazine called Biomineral Geochemisty: Windows into Past Climates and Calcification. The cover shows a picture of small clusters of amorphous calcium carbonate

Great to finally hold this in my hand! Pleasure to work with @amoeba-lab.bsky.social and Ros Rickaby in editing this issue of Elements: Biomineral Geochemistry. Thanks also to all the authors who made such a great set of articles! www.elementsmagazine.org 🧪🌊⚒️

01.05.2025 21:21 — 👍 39    🔁 3    💬 2    📌 0

So sorry to hear the news - all the very best. If there's anything the wider community can do to offer support please reach out.

04.04.2025 09:49 — 👍 1    🔁 0    💬 0    📌 0
Cross plots of d11B reference value vs. what we measure using Laser Ablation on our Neoma MC-ICPMS/MS.  All the data lie on the 1:1 line showing that we can get accurate d11B data using laser ablation on a range of matrices from carbonate to silicate when normalised to NIST 612 glass.

Cross plots of d11B reference value vs. what we measure using Laser Ablation on our Neoma MC-ICPMS/MS. All the data lie on the 1:1 line showing that we can get accurate d11B data using laser ablation on a range of matrices from carbonate to silicate when normalised to NIST 612 glass.

Mass scans from m/z 9.7 to 11.1 for the Neoma MS/MS, base Neoma and Neptune when ablating carbonates.  The Neptune shows an elevated background due to scattering of Ca and Ar 4+ ions.  This is reduced in the base Neoma and entirely eliminated in the Neoma MS/MS.  We think this is because the formation of Ca4+ and Ar4+ is reduced in this design of MS and scattering of this multiply charged ions is reduced once Ar and Ca are cut out by the pre-filter.

Mass scans from m/z 9.7 to 11.1 for the Neoma MS/MS, base Neoma and Neptune when ablating carbonates. The Neptune shows an elevated background due to scattering of Ca and Ar 4+ ions. This is reduced in the base Neoma and entirely eliminated in the Neoma MS/MS. We think this is because the formation of Ca4+ and Ar4+ is reduced in this design of MS and scattering of this multiply charged ions is reduced once Ar and Ca are cut out by the pre-filter.

This shows the problem with laser ablation boron isotopes in carbonates on our Neptune MC-ICPMS.  It shows a mass scan from m/z 9.7 to m/z 11.1 with peaks at the boron masses 10B and 11B.  Rather than being a flat line - the baseline is elevated around boron 10 (and 11) due to scattering of 4+ Ar and Ca.

This shows the problem with laser ablation boron isotopes in carbonates on our Neptune MC-ICPMS. It shows a mass scan from m/z 9.7 to m/z 11.1 with peaks at the boron masses 10B and 11B. Rather than being a flat line - the baseline is elevated around boron 10 (and 11) due to scattering of 4+ Ar and Ca.

!New Paper Alert! Matrix independent and interference free in situ boron isotope analysis by laser ablation MC-ICP-MS/MS pubs.rsc.org/en/content/a.... In it we use our Neoma MC-ICPMS/MS to overcome the complexities of measuring boron isotopes by Laser Ablation in carbonates and other minerals. ⚒️🧪🌊🪸

03.04.2025 11:52 — 👍 29    🔁 5    💬 1    📌 0
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MicroPaleoWorks | micropaleoslides MicroPaleoWorks, a Foraminarium company. Supplier of micropaleoslides for foraminifera and other microfossils or small samples

Need micropaleontology slides? I started a company! MicroPaleoWorks.com. If you need slides, hit me up. Prices range from 1.50 to 2.20 each depending on the variety. We can customize with numbering for a fee. We are a #smallbusiness #womenowned #madeintheUSA using #canadianaluminum & #recycledpaper

02.04.2025 16:33 — 👍 40    🔁 30    💬 3    📌 3

Fully agree - I think that topic deserves an issue of its own though!

02.04.2025 09:56 — 👍 0    🔁 0    💬 1    📌 0
Cover of Elements Issue entitled Biomineral Geochemistry: Windows into Past Climates and Calcification.  The picture shows amorphous calcium carbonate particles - the precursors to many biominerals

Cover of Elements Issue entitled Biomineral Geochemistry: Windows into Past Climates and Calcification. The picture shows amorphous calcium carbonate particles - the precursors to many biominerals

Very pleased to have co-edited the latest version of Elements Magazine (www.elementsmagazine.org) "Biomineral Geochemistry" with @amoeba-lab.bsky.social and Ros Rickaby. Topics range from controls on CaCO3 polymorph to the role of amorphous intermediate phases and "vital effects". 🧪🌊🪸⚒️

01.04.2025 12:22 — 👍 36    🔁 15    💬 0    📌 0

On topics as diverse as stable isotope geochemistry, amorphous precursor phases, inferring ion transport processes, and biomineral polymorph selection. Overall we aim to highlight how the 'vital effect' problem can not only be overcome but also leveraged to understand the organisms we work with!

01.04.2025 11:38 — 👍 2    🔁 1    💬 0    📌 0

It was an absolute pleasure to co-guest edit this with @thefosterlab.bsky.social and Ros Rickaby - and features fantastic contributions led by Anne Jantschke, @chalkyoceans.bsky.social, Jarosław Stolarski, Oscar Branson, and Sang Chen

01.04.2025 11:35 — 👍 2    🔁 1    💬 1    📌 0
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Absolutely delighted to announce that our issue of Elements was published today:
www.elementsmagazine.org
Highlighting how biomineral geochemistry can be (simultaneously) used to reconstruct past climate change and constrain biomineralisation processes

01.04.2025 11:28 — 👍 11    🔁 5    💬 2    📌 0

About ten days left for this job! Don't miss the chance!

27.03.2025 19:55 — 👍 10    🔁 9    💬 0    📌 1
Post image 26.03.2025 00:16 — 👍 1    🔁 0    💬 0    📌 0
An image of a live foraminifera around 200 microns in diameter with long pseudopodia

An image of a live foraminifera around 200 microns in diameter with long pseudopodia

Today in the Amoeba lab - an initial step on our path to building a new dedicated foraminifera culturing facility. Here are our first images of live foraminifera!

26.03.2025 00:13 — 👍 14    🔁 5    💬 2    📌 1
#ICP15 perspective speakers are Raja Ganeshram, B N Goswami, Sidney Hemming, Bridget Wade and Thomas Westerhold

#ICP15 perspective speakers are Raja Ganeshram, B N Goswami, Sidney Hemming, Bridget Wade and Thomas Westerhold

#ICP15 #perspective #speakers are Raja Ganeshram @edinburgh-uni.bsky.social , B N Goswami, Sidney Hemming @lamontearth.bsky.social @bridgetwade.bsky.social Thomas Westerhold @marumunibremen.bsky.social
All our #pleanry #speakers are now announced 👇🏼😊
www.icp15.com/themes

17.03.2025 18:29 — 👍 12    🔁 6    💬 0    📌 0
#ICP15 announces speakers for #ocean ocean-climate dynamics: (left to right) Cristiano M Chiessi, Sophie Hines, Frerk Poeppelmier and Xu Zhang

#ICP15 announces speakers for #ocean ocean-climate dynamics: (left to right) Cristiano M Chiessi, Sophie Hines, Frerk Poeppelmier and Xu Zhang

#ICP15 announces #invited #plenary #speakers on #ocean-climate dynamics
Cristiano Chiessi
Sophie Hines @whoi.edu
@fpoeppelmeier.bsky.social Margit Simon @bjerknes.bsky.social
And Xu Zhang @bas.ac.uk

10.03.2025 13:18 — 👍 10    🔁 6    💬 0    📌 0
#ICP15 invited speakers on past climate state reconstructions from proxies and models are Alex J Farnsworth, Heather Ford, Lucas Jonkers, Johann P Klages and Pam Vervoort

#ICP15 invited speakers on past climate state reconstructions from proxies and models are Alex J Farnsworth, Heather Ford, Lucas Jonkers, Johann P Klages and Pam Vervoort

#ICP15 announces #invited #plenary #speakers on past climate state reconstructions from #proxies and #models Alex Farnsworth
Lukas Jonkars @marumunibremen.bsky.social
Johann allege @awi.de
And
Pam Vervoort @unibirmingham.bsky.social
Complete line of theme speakers:
www.icp15.com/themes

10.03.2025 13:27 — 👍 22    🔁 8    💬 1    📌 1
#ICP15 invited speakers photos (from left to right): Tripti Bhattacharya, Pedro DiNezio, Ed Hathorne, Anta-Clarissa Sarr, Chuan-Chou (River) Shen and Arun Deo Singh.

#ICP15 invited speakers photos (from left to right): Tripti Bhattacharya, Pedro DiNezio, Ed Hathorne, Anta-Clarissa Sarr, Chuan-Chou (River) Shen and Arun Deo Singh.

#ICP15 presents #invited #plenary #speakers for #paleomonsoon #monsoon dynamics theme @triptychphrases.bsky.social Pedro DiNezio @edhathorne.bsky.social @antacl.bsky.social Chuan-Chou (River) Shen and Arun Deo Singh

www.icp15.com/themes

06.03.2025 17:02 — 👍 15    🔁 5    💬 0    📌 2
#ICP15 invited speakers of Theme 5 are: (from left to right) Hana Jurikova, Lenart De Nooijer, Matt Osman, Yi Wang and Martin Ziegler.

#ICP15 invited speakers of Theme 5 are: (from left to right) Hana Jurikova, Lenart De Nooijer, Matt Osman, Yi Wang and Martin Ziegler.

#ICP15 presents #invited #speakers in theme 5, #innovation / #novel approaches in #paleocenaography and #paleoclimatology
Hana Jurikova -> Uo St Andrews
Lenart De Nooijer ->
Matt Osman -> UoCambridge
Yi Wang -> Tulane Uni
Martin Ziegler -> Utrecht Uni

www.icp15.com/themes
(Scroll down to theme 5).

04.03.2025 17:18 — 👍 11    🔁 5    💬 2    📌 0
Theme 1 invited speakers at the ICP15, Eleni Anagnostou, Alex Auderset, Tom Chalk, Kate David, Jesse Farmer and Arun Singh.

Theme 1 invited speakers at the ICP15, Eleni Anagnostou, Alex Auderset, Tom Chalk, Kate David, Jesse Farmer and Arun Singh.

#ICP15 presents theme 1 #invited #speakers #biogeochemistry #Climate
@eleniwater.bsky.social @alexauderset.bsky.social @chalkyoceans.bsky.social @seavdavis.bsky.social @jfarmersalmanac.bsky.social and Arvind Singh

03.03.2025 20:43 — 👍 18    🔁 6    💬 1    📌 2
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Exploring macroevolutionary links in multi-species planktonic foraminiferal Mg∕Ca and δ18O from 15 Ma to recent Abstract. The ratio of the trace element Mg over Ca (Mg/Ca) and the oxygen isotopic composition (δ18O) of foraminiferal calcite are widely employed for reconstructing past ocean temperatures, although...

New paper out in Biogeosciences: Exploring macroevolutionary links in multi-species planktonic foraminiferal Mg/Ca and δ18O from 15 Ma to recent. Read all about it here doi.org/10.5194/bg-2...

02.03.2025 16:29 — 👍 12    🔁 4    💬 0    📌 0
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Exploring macroevolutionary links in multi-species planktonic foraminiferal Mg∕Ca and δ18O from 15 Ma to recent Abstract. The ratio of the trace element Mg over Ca (Mg/Ca) and the oxygen isotopic composition (δ18O) of foraminiferal calcite are widely employed for reconstructing past ocean temperatures, although...

new paper led by Flavia Boscolo-Galazzo 'Exploring macroevolutionary links in multi-species planktonic foraminiferal Mg∕Ca and δ18O from 15 Ma to recent'

bg.copernicus.org/articles/22/...

28.02.2025 09:48 — 👍 5    🔁 3    💬 1    📌 0
Register — ICP15

Dear Paleoceanographers,

#ICP15 #registration, #abstract, and #ECR #grant submission is now open. Please follow link on the website.
If you are applying for ECR grant then please wait to register/book accommodation until you hear from us. 🙏🏼
www.icp15.com/register

09.02.2025 18:17 — 👍 16    🔁 9    💬 1    📌 2

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