Researcher @NaturalisMarine @museumnaturalis, Assistant Professor @UniLeiden. @leeselab alumnus. Utilizing molecular tools to study communities.
Niederlande
Based in Netherlands
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The new @nanopore P2 Solo arrived @Naturalis_Sci. Ready for sequencing more #meiofauna barcodes and transcriptomes! @Elza74649502 @NaturalisMarine
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New #meiofauna preprint: We generated >770 new COI reference barcodes, analyzed more than 550 #metabarcoding samples from sandy beaches of the North Sea, and show that reference #barcoding of beach meiofauna massively improves #metabarcoding efficiency.biorxiv.org/content/10.1101/…
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Teaching the 'Orientation on Biodiversity' course @UniLeiden. This week, we're exploring aquatic fauna in ditches of areas recently transitioned to less intensive farming. Great to work with that many motivated students!
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Good to see many beaches that have not been machine-cleaned to near sterility. These washed ashore algae are a vital part of active natural processes in #beach ecosystems. #Iceland #NaturalBeaches
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Continuing our #meiofauna sampling tour on urbanized #beaches. Heavy traffic and loss of foredunes due to construction pose unique challenges. We will study the impact on coastal biodiversity by sampling a gradient of near-pristine to heavily impacted beaches and #dunes
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Great find today during the #meiofauna workshop @Naturalis_Sci! We found mites of the genus Rhodacarus in the coastal groundwater of Katwijk #beach. So much unseen #biodiversity beneath our feet!
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Today, as part of the 2023 #beach #meiofauna workshop, our experts are working in the live science room @museumnaturalis @Naturalis_Sci, showcasing the diversity of life found in beaches along the North Sea coast!
ALT A nematode worm seen under the microscope
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In this year's #beach #meiofauna workshop at @Naturalis_Sci,we're not just sampling the intertidal zone, but also the foredunes.Our aim is to understand how their loss due to tourism and urban development affects beach biodiversity. Today we found #Tardigrades (genus Batillipes)!
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Kicking off the 2023 #beach #meiofauna workshop @Naturalis_Sci! Experts @NemaMarta, @Ullamartinez, @nurisanc_ have sampled and identified the first species. This year,our focus is on studying the impact of urbanization on beach ecosystems. Looking forward to three exciting weeks!
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Fantastic @Naturalis_Sci colloquium today with @DanielaZeppilli and @ValentinFoulon from @Ifremer_fr! The Blue Revolution Project is developing #AI tools to study and monitor marine benthic diversity. Cool innovations in #microscopy, #automatisation and #meiofauna research
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Today's @Naturalis_Sci colloquium talk featured @fburki showcasing his @ERC_Research on the origin of plastids. Fascinating insights into the often overlooked, astonishing diversity of protists! So much biodiversity awaits discovery! #metagenomics #metabarcoding #microscopy
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Currently at NIOZ analyzing sediment grain size of North Sea #beach samples to explore its impact on #meiofauna community composition @NIOZnieuws @Naturalis_Sci @NaturalisMarine
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Visited Katwijk beach to check out the ongoing beach nourishment. Interesting to see the pipeline and heavy machinery, but curious about the impact on the ecosystem.
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... that foraminiferan and radiolarian mitogenomes encode a reduced gene complement compared to other sequenced rhizarians. In radiolarian mitogenomes, a non-canonical genetic code was identified in which all three stop codons encode amino acids.
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New preprint: We present the mitochondrial genomes of Retaria (#Foraminifera and #Radiolaria) biorxiv.org/content/10.1101/… .Two complete Foraminifera mitogenomes+ two near-complete radiolarian mitogenomes, and the complete coding content of an additional 14 foram species. We show...🧵
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Got a tour through the Bali Starling sanctuary and release station in West Bali National Park today. Magnificent birds. Habitat loss and poaching has brought them to the brink of extinction. Less than 200 remain in the wild, most of them here in West Bali NP. Spotting them...
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Visited some more remote beaches and mangroves in West Bali National Park today, on foot and on horseback. We found 15 species of mangrove and countless Barred Mudskippers and fiddler crabs.
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Today I am exploring the beaches and coastal forests of Bali Barat National Park @btn_balibarat. Very interesting, highly diverse tropical savanna, monsoon forest and mangrove ecosystems. Great to see that many habitats and different species in one day!
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Today I visited @brin_indonesia Bali Botanic Garden. Very nice location high up in the mountains and an impressive collection of orchids, ferns and bamboos. Worth a visit!
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New students are busy collecting and photographing #beach #meiofauna for @AriseBiodivers1. Improved DNA barcode reference databases are needed to better understand diversity & ecology of these taxa & ecosystems + will improve annotation of #metabarcoding data. @Naturalis_Sci
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Taking beach #meiofauna samples on #Amrum today. Not far from yesterday's stop on Sylt, but the beach here is quite different: much wider intertidal flat, very wide upper beach/supralittoral zone, much finer sand. Will be interesting to compare @museumnaturalis @NaturalisMarine
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Last leg of this year's #beach #meiofauna sampling tour! Taking samples on #Sylt, the northernmost German island. The sand here is much coarser than further south. Will be interesting to see if and how that influences meiofauna community composition @Naturalis_Sci
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One of the yet undescribed beach #meiofauna species found during the @AriseBiodivers1 meiofauna workshop in May made it into the @Naturalis_Sci exhibition! Just in time for the #Ocean #Science month (naturalis.nl/museum/expediti…) and including a great 3d model of a Gastrotrich
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Beach #meiofauna sampling on #Helgoland. Great to finally sample a beach with lots of organic material left! Also always good to see the famous red cliffs and visit the gannet colony. @Naturalis_Sci @AriseBiodivers1 @NaturalisMarine
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Today I'm looking for beach #meiofauna on #Borkum, the westernmost of the German Wadden Islands. Due to erosion and accretion along the coast of Borkum, some of the beaches here are very wide - feels like walking through a desert. @Naturalis_Sci @NaturalisMarine
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Next stop on the beach #meiofauna sampling tour is the German island of #Norderney. Waiting for low tide and measuring salinity in the meantime. 35 ‰ is typical for seawater in this part of the North Sea. @Naturalis_Sci @NaturalisMarine
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Looking for #meiofauna on the Wadden Islands. Today on the German island of #Wangeeroge. Heavy thunderstorm during the ferry trip, then a nice ride with the island train through the salt marshes, now on the beach. @Naturalis_Sci @AriseBiodivers1 @NaturalisMarine
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Some beaches on the Wadden Islands are heavily impacted by trampling and beach driving- bad for #meiofauna and #beach ecosystems.I do however appreciate that some trucks write little #poems into the sand with their tire tread ;) @museumnaturalis @NaturalisMarine #metabarcoding
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Day 2 of the beach #meiofauna sampling trip to the Dutch Wadden Islands. Today: #Vlieland @Naturalis_Sci @AriseBiodivers1 @NaturalisMarine #metabarcoding
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Just in time: I took #meiofauna samples on the beach of #Terschelling just before the wrack zone was rigorously cleaned from most organic material. Photos: same place, before and after cleaning. @AriseBiodivers1 @Naturalis_Sci @NaturalisMarine #metabarcoding
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Back on the beach! Sampling #meiofauna on the Dutch Wadden Islands. Today: #Terschelling @AriseBiodivers1 @Naturalis_Sci @NaturalisMarine #metabarcoding
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Two days of sampling #beach #meiofauna on the Wadden Islands. Great to be in the field again. Amazing beaches! #metabarcoding #metatranscriptomics @AriseBiodivers1 @Naturalis_Sci
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#Meiofauna workshop @Naturalis_Sci: Diego Fontaneto (@MEG_Verbania) is our #Rotifera expert and is currently identifying species from a brackish lagoon near The Hague.
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There is a striking lack of data on stygofaunal animals from many places, also for the Netherlands, as shown here by @UllAmartinez @Naturalis_Sci . @AriseBiodivers1 will tackle this in the coming years. #meiofauna #biodiversity
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Alejandro Martinez Garcia @UllAmartinez now presenting the Stygofauna Mundi project (@stygofaunamundi) @Naturalis_Sci . He studies subterranean and #cave fauna, collects and analyses all published work on these unique ecosystems and species. #meiofauna
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#Meiofauna workshop @Naturalis_Sci , week 2. @ulfjo found a flatworm that is staring back at him 👁️👁️! This one was found on a beach near Scheveningen. @FrancescaLeasi @EleniChri_ @UllAmartinez @inir725
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Today the #meiofauna experts are working in the public LiveScience area @Naturalis_Sci @museumnaturalis. They are identifying species living between the sand grains of the #beach in Katwijk. Can you spot the worm? With @ulfjo @UllAmartinez @inir725 @EleniChri_
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#Meiofauna workshop @Naturalis_Sci : @inir725 is our #mite expert. Here he is identifying a mite found between barnacles on #Texel.
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#Meiofauna workshop at @Naturalis_Sci, Day 5. @UllAmartinez & @EleniChri_ are busy with identifying polychaete worms from the sandy beach of #Texel. Next step: reference DNA #barcoding for @AriseBiodivers1
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The #meiofauna workshop participants are looking for new species on island of #Texel today. In mudflats, sandy beaches, algae @Naturalis_Sci @ulfjo @UllAmartinez @inir725 @EleniChri_ @FrancescaLeasi
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Start of the Dutch #beach #meiofauna workshop @Naturalis_Sci!First samples collected&species identified.Two productive weeks ahead,with @AriseBiodivers1,@ulfjo,@FrancescaLeasi,@UllAmartinez ,@inir725,@EleniChri_,Antonio Todaro,DiegoFontaneto,Marco Curini-Galletti, Martin Sørensen
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5/n ...sequences can be added to databases like BOLD (Barcode of Life, @iBOLConsortium), expanding the COI Tree of Life and allowing better understanding of Foram species diversity and evolution. Thanks team! More to come! @Naturalis_Sci @NaturalisMarine
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2/n ...18S rRNA was the only widely available molecular "barcode" for Foraminifera, a highly diverse group of (mostly) marine #protists. While 18S was and is extremely useful for exploring and describing the diversity of Foraminifera, it comes with substantial intragenomic...
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Very happy to share that we just published the first mitochondrial COI #barcodes of #Foraminifera in @SciReports. Great work by @EBGirard,@evocellbio,@rvosa, @Elza74649502,@alsadekov,@JamalJompa,Richard Wissels,Anouk Langerak,@willem_foram nature.com/articles/s41598-0… So far... 1/n
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Lots of fresh #beach sand and #meiofauna from Cyprus for #metabarcoding and #metatranscriptomics! 35 beaches, 105 samples. Great job by @RGielings @marlenivasquezh and team as part of @Ocean4Biotech and @NaturalisMarine @Naturalis_Sci
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Out now: The mitochondrial genome of 𝑁𝑒𝑚𝑎𝑙𝑒𝑐𝑖𝑢𝑚 𝑙𝑖𝑔ℎ𝑡𝑖 (Hydrozoa, Leptothecata) tandfonline.com/doi/full/10.…; with @bbvdhoorn @Elza74649502 @ArjenSpeksnij, Simone Montano, Ehsan Kayal @Naturalis_Sci @NaturalisMarine #Cnidaria #mitogenome
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Sampling Ijmuiden #beach for #meiofauna today. Next to the steelworks that were all over the news the last few days. Will soon find out if and how meiofauna is impacted by graphite rain...@Naturalis_Sci @NaturalisMarine #metabarcoding
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Early start at Petten beach, sampling #beach #meiofauna for BEN and @AriseBiodivers1 projects at @Naturalis_Sci and @NaturalisMarine. Two more sampling sites to go before lab work can start.
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Sampling intertidal beach #meiofauna in #Zeeland today. Great #beach with very diverse intertidal zone. Also some curious non-meiofaunal animals around! @AriseBiodivers1 @Naturalis_Sci @NaturalisMarine
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Always amazing to see the diversity of #meiofauna living between the sand grains of a sandy #beach. Copepods, nematodes, polychaetes and much more. This sample is from Katwijk, close to @Naturalis_Sci. Stained with rose bengal: red = animal, white/yellow = sand. @NaturalisMarine
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Stormy day on Katwijk beach! Taking samples for student projects: #meiofauna primer tests and Platyhelminthes #barcoding for BEN project and @AriseBiodivers1 @Naturalis_Sci @NaturalisMarine. Glad we weren't blown away 💨!
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Beautiful day on the beach! Sampling #beach #meiobenthos at Falga beach for BEN project @AriseBiodivers1 @Naturalis_Sci @NaturalisMarine
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Weekend read. #Meiofauna diversity and ecology is amazing. Preparing for many high-throughput #barcoding, #metabarcoding, #metagenomics and #edna studies as part of @AriseBiodivers1 project @Naturalis_Sci @iBOLConsortium
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Just published in #PLOSONE: We integrated #morphology and #metagenomics to understand taxonomic variability of the large benthic #foraminifera Amphisorus from Australia and Indonesia @alsadekov @MartinaPrazeres @willem_foram @Naturalis_Sci @NaturalisMarine
dx.plos.org/10.1371/journal.…
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The mitochondrial genomes of 11 aquatic macroinvertebrate species from Cyprus. Data paper in @MBMGjournal doi.org/10.3897/mbmg.4.58259 Molecular + taxonomic work needed to describe fw macroinvert diversity of Cyprus and make data available for monitoring. @bbvdhoorn @marlenivasquezh
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LerayXT primers might work with some tweaking. Lots of NUMTs though, so finding the true COI fragment will be a challenge (if it actually exists). I shotgun sequenced a few species. Happy to share data if needed.
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Metabarcoding of North Sea zooplankton: community differences between northern & southern areas; abundance & distribution patterns similar to morphological data; many understudied taxa found @NaturalisMarine @LodewijkW @katjaplankton @bbvdhoorn Preprint: biorxiv.org/content/10.1101/…
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Start of the @Ocean4Biotech meeting in Piran, #Slovenia. Looking forward to discussions on how to detect and study marine species using #metagenomics and #metatranscriptomics. @Naturalis_Sci @NaturalisMarine
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How do #Foraminifera and #symbionts react to changing light conditions? #Metagenomics and #metatranscriptomics will tell! Successful start of the experiment @Naturalis_Sci @NaturalisMarine in collaboration with @burgerszoo.
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At @univgroningen to give a guest lecture on molecular #ecology of #Foraminifera, #zooplankton and other marine critters. Great course & very motivated students!
@Naturalis_Sci
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Beautiful day for sampling #beach invertebrates for new student projects on #transcriptomics. #fieldwork @NaturalisMarine @Naturalis_Sci
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Sorting #Foraminifera from #coral rubble for #transcriptome sequencing. @willem_foram @NaturalisMarine @Naturalis_Sci
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Visited @TjeerdBouma @NIOZnieuws today to see the amazing marine #mesocosm facilities and discuss collaborations #molecularecology @willem_foram @Naturalis_Sci
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