Introducing Haploniscus hades, isopod of the underworld.
The deep sea is the largest yet least explored biome in the world, with estimates suggesting that up to 91% of marine species are yet to be discovered.
Indeed, when it comes to finding new species in the deep sea, things are more than a little tricky. Besides the obvious difficulties associated with scouring such vast, inaccessible depths, researchers also face the obstacle of so-called ‘cryptic’ species: groups of closely related taxa that are almost impossible to tell apart from looks alone.
The recently discovered Haploniscusbelyaevi isopod species complex is one such group, collected from the the abysso-hadal Kuril-Kamchatka Trench (KKT) region in the Northwest Pacific Ocean.
Distribution of haploniscid species of the belyaevi-complex in the greater Kuril-Kamchatka Trench and Sea of Okhotsk area of the Northwest Pacific. Stars indicate each species type locality.
Isopods collected from the region were initially believed to represent a single species, but are now known to represent at least six distinct species, five of which are new to science. Published in the journal Zoosystematics and Evolution, a new study combines classical morphology with DNA barcoding, confocal laser scanning microscopy, and the first-ever genomic sequencing of Haploniscidae isopods to distinguish these cryptic species.
In the research paper, lead author Dr Henry Knauber and his colleagues from the Senckenberg Research Institute and Goethe University Frankfurt provide detailed descriptions of each species and reveal the names of the new species, inspired by Greek mythology.
Meet the new isopods
Left to right: H.hades, H.belyaevi, and H.erebus.
Haploniscus hades
Who else could rule the hadal zone but Hades himself? This isopod’s pleotelson (tail segment) hides its uropods (tail appendages), which, to the endlessly creative research team, evoked the cap of invisibility used by Hades.
Haploniscus apaticus
Named after Apate, the goddess of deceit, this ‘deceptive’ isopod hides in plain sight thanks to its unassuming looks, which kept it hidden amongst its sibling species until recently.
Haploniscus erebus
Bearing the name of Erebus, the primordial god of darkness, this species lurks in the shadowy depths.
Haploniscus kerberos
Named after Kerberos (Cerberus), the multi-headed guardian of the underworld’s gates, this species is currently only known from the abyssal plains, watching over the borderlands between deep and deeper.
Haploniscus nyx
Nyx, the goddess of night, lends her name to this elusive species.
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The isopod specimens were collected during deep-sea research expeditions between 2012 and 2016, covering depths of up to 8,000 meters.
While the names of these species represent little more than creative fun, the study’s findings help illuminate evolutionary processes across natural barriers such as the Kuril-Kamchatka Trench and underscore the potential for new discoveries in Earth’s least explored environments.
Who knows, perhaps Haploniscus hades has two brothers, H. zeus and H. Poseidon, hiding above, still waiting to be found.
Original source
Knauber H, Schell T, Brandt A, Riehl T (2025) Across trench and ridge: description of five new species of the Haploniscus belyaevi Birstein, 1963 species complex (Isopoda, Haploniscidae) from the Kuril-Kamchatka Trench region. Zoosystematics and Evolution 101(2): 813-853. https://doi.org/10.3897/zse.101.137663
Cover image credit: Isopods: Knauber et al.; Illustration: macrovector/Freepik.
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The European Union (EU) has been working to protect nature for decades, with the Natura 2000 network now safeguarding over 18% of EU land and 9% of its marine territory. Yet, biodiversity is still in trouble, with only 50% of bird species and 15% of habitats in good conservation status.
To turn the tide, the EU’s Biodiversity Strategy for 2030 will expand the existing Natura 2000 areas, implement the EU’s first-ever Nature Restoration Law, and introduce concrete measures to achieve global biodiversity targets. Success will depend on enhancing biodiversity monitoring, making better use of data and gaining a clearer picture of how nature is changing.
Addressing this urgent challenge, the EU Horizon project BMD (abbreviated for Biodiversity Meets Data) will offer a centralised platform (Single Access Point or SAP) for improved biodiversity monitoring across Europe.
Pensoft’s role
Pensoft will play a role in Biodiversity Meets Data’s impact by planning and implementing the communication, dissemination and exploitation of project results, as well as helping with the training and capacity building for BMD’s end-users, which will be led by LifeWatch ERIC. Pensoft will adopt a multi-format approach to knowledge transfer with tailored outputs for the scientific community, decision-makers, industry representatives and the general public.
Furthermore, the BMD SAP will also incorporate elements of the Biodiversity Knowledge Hub (BKH), developed under the BiCIKL project, coordinated by Pensoft.
“It’s incredibly rewarding to see the continuity in our projects, with the legacy of the BiCIKL project continuing with Biodiversity Meets Data. This seamless progression not only builds on our past successes but also ensures that our work continues to deliver long-lasting value to the biodiversity community.”
said Prof. Dr. Lyubomir Penev, CEO and Founder of Pensoft, and project coordinator of BiCIKL (abbreviated from Biodiversity Community Integrated Knowledge Library).
The BMD project consortium at the project’s kick-off meeting in early March 2025 (Leiden, the Netherlands).
International consortium
Coordinated by Naturalis Biodiversity Center, the project brings together 14 partner organisations from 11 countries to develop innovative solutions for biodiversity management.
Visit the BMD project website at https://bmd-project.eu/, and make sure to follow the project’s progress via our social media channels on Blueskyand Linkedin.
They say beauty is everywhere if we have eyes to see; a team of scientists looked at a tiny, 3-mm snail and saw art.
An international group of malacologists (researchers studying molluscs) led by Serbian PhD student Vukašin Gojšina and his Hungarian supervisor, Barna Páll-Gergely, was exploring snail diversity in Southeast Asia when a species unknown to science grabbed their attention, prompting them to name it after cubist artist Pablo Picasso.
Unlike most other snails, Anauchen picasso has rectangularly angled whorls that, according to the scientists, make it look “like a cubist interpretation of other snails with ‘normal’ shell shapes.”
Anauchen picasso.
The research team just published a 300-page article including the descriptions of 46 new species of microsnails from Cambodia, Myanmar, Laos, Thailand, and Vietnam.
SEM imaging showing an enlarged apertural view of Anauchen picasso.
“Although the shell sizes of these snails are less than 5 mm, they are real beauties! Their shells exhibit extraordinarily complexity,” they say. “For example, the aperture (the ‘opening’ of the shell) is armed with numerous tooth-like barriers, which are most probably useful against predators. Furthermore, several of the new species have an aperture that turns upwards or downwards, which means that some species carry their shells upside-down.”
These apertural barriers and the orientation of the last whorl on the shell were among the primary characters that helped the researchers tell different snails apart.
Appearance of the last whorl A shouldered B rounded C keeled at the centre of the periphery D keeled above the centre of the periphery E keeled below the centre of the periphery F double keeled.
While many of these new species were collected recently, several, unknown to science until now, were found in the collection of the Florida Museum of Natural History, collected all the way in the 1980’s. It is likely (and in some cases, certain) that the locations where these snails were found have already been destroyed by deforestation and limestone quarrying, which are the major threats to locally endemic land snails in Southeast Asia.
Research article:
Gojšina V, Hunyadi A, Sutcharit C, Tongkerd P, Auffenberg K, Grego J, Vermeulen JJ, Reischütz A, Páll-Gergely B (2025) A new start? Revision of the genera Anauchen, Bensonella, Gyliotrachela and Hypselostoma (Gastropoda, Eupulmonata, Hypselostomatidae) of Southeast Asia with description of 46 new species. ZooKeys 1235: 1-338. https://doi.org/10.3897/zookeys.1235.145281
In the heart of Canada’s Rocky Mountains, an unassuming yet remarkable butterfly has been quietly flying under our scientific radar for years. With a wingspan of an inch to an inch and a half, and wings that are brown on top and greyish brown with black spots below, this population was long thought to belong to the Half-moon Hairstreak (Satyrium semiluna). However, the isolated hairstreak butterflies of Blakiston Fan in Waterton Lakes National Park, Alberta, have now been recognized as a distinct species: Satyrium curiosolus, or the Curiously Isolated Hairstreak.
Satyrium curiosolus.
A recent study by an international collaborative team, published in ZooKeys, uncovered the unique evolutionary history of this population. The results were striking: Satyrium curiosolus has been completely isolated from its closest relatives for quite a while—possibly up to 40,000 years— becoming more and more genetically and ecologically unique along the way.
The science behind the discovery
“Our whole-genome sequencing of S. curiosolus revealed strikingly low genetic diversity and exceptionally high levels of historical inbreeding compared to the geographically nearest S. semiluna populations in British Columbia and Montana, more than 400 km distant,” says co-first author Zac MacDonald, a La Kretz postdoctoral researcher at University of California Los Angeles Institute of the Environment and Sustainability. Despite its small population size, genetic data suggest that S. curiosolus has likely maintained itself as a stable, independent lineage for tens of thousands of years. “Like the Channel Island Fox, S. curiosolus may have purged some of its harmful recessive genetic variation through a long, gradual history of inbreeding, allowing it to persist as a small and completely isolated population today,” MacDonald adds.
Satyrium curiosolus.
Satyrium curiosolus is found in a distinct habitat unlike any other population of S. semiluna that we know of. While its relatives thrive in sagebrush steppe, S. curiosolus occupies a single alluvial fan that is more accurately described as prairie-grassland, where it associates with different plants and ant species. Satyriumcuriosolus relies exclusively on silvery lupine (Lupinus argenteus) for larval development, a plant not known to be used by S. semiluna populations in British Columbia.
A freshly eclosed S. curiosolus on silvery lupine (Lupinus argenteus).
“Furthermore, we recently discovered that S. curiosolus larvae have mutualistic relationships with a particular species of ant (Lasius ponderosae), which has not been observed in other S. semiluna populations,” says James Glasier of the Wilder Institute/Calgary Zoo, who was also part of the study. Satyrium curiosolus caterpillars provide the Lasius ants with a sugary excretion called honeydew to eat, while in return the ants protect the caterpillar from parasites and predators. Caterpillars also retreat into ant galleries when disturbed, or when it gets too hot out, and adult females have been observed laying eggs right near the entrances to Lasius colonies under Silvery Lupines.
Why it matters
The recognition of S. curiosolus as a species has important implications, highlighting its unique evolutionary trajectory and emphasizing an urgent need for tailored conservation strategies.
The discovery of S. curiosolus is a powerful demonstration of how genomics is revolutionizing taxonomy and conservation.
Julian Dupuis, Assistant Professor in the Department of Entomology at University of Kentucky
Satyriumcuriosolus faces a somewhat unique challenge: its long-term isolation has resulted in very low genetic diversity, which means that the species has a reduced potential to adapt to changing climatic conditions. While conservationists often consider genetic rescue—introducing individuals from related populations to boost genetic diversity—as a solution to low genetic diversity, the distinctiveness of S. curiosolus raises concerns about potential outbreeding depression when mixed with S. semiluna. It is likely that the two species are not even reproductively compatible, meaning S. curiosolus may be on its own. Conservation efforts must now consider new solutions, such as establishing additional S. curiosolus populations, to help this butterfly persist as climate change threatens ecological change at Blakiston Fan.
A case study in genomics and conservation
Satyrium curiosolus.
“The discovery of S. curiosolus is a powerful demonstration of how genomics is revolutionizing taxonomy and conservation,” remarked co-first author Julian Dupuis, an Assistant Professor in the Department of Entomology at University of Kentucky. “While traditional taxonomic methods often rely on morphology alone, our study underscores the importance of integrating genomic and ecological data to uncover hidden diversity. With the rise of genomic tools, previously unrecognized species like S. curiosolus are being discovered, highlighting the need for conservation strategies that account for cryptic biodiversity.” Dupuis adds.
Collaboration in conservation
The Curiously Isolated Hairstreak reminds us that even the smallest and most overlooked species can hold extraordinary scientific and conservation significance.
“Our studies on S. curiosolus and S. semiluna highlight the importance of collaboration between academic scientists, nonprofit organizations, and conservation managers. All of this work was made possible through partnerships between academic researchers, Parks Canada, and the Wilder Institute/Calgary Zoo. By combining expertise in genomics, field ecology, and conservation management, we were able to produce findings that not only reshape our understanding of biodiversity but also provide actionable insights for species protection. Moving forward, these interdisciplinary collaborations will be critical for tackling complex conservation challenges and ensuring the long-term survival of species like S. curiosolus,” added MacDonald.
The future of Satyrium curiosolus
Title: S. curiosolus larvae being attended to by Lasius ponderosae ants.
Recognizing S. curiosolus as a distinct species is just the beginning, the researchers say. Future research should explore its evolution and interactions with other species like host plants and ants. Additionally, long-term monitoring by Parks Canada and the Wilder Institute/Calgary Zoo will be essential to assess how this species copes with climate change and what conservation actions are appropriate. “This is a wonderful example of how such monitoring can connect diverse approaches and impactful answers to a simple question like ‘that’s odd – why is it there?’”, says anchor author Felix Sperling, a professor at the University of Alberta and curator of the U of A’s Strickland Museum of Entomology.
“For now, the Curiously Isolated Hairstreak reminds us that even the smallest and most overlooked species can hold extraordinary scientific and conservation significance,” the researchers say in conclusion.
Research article:
MacDonald ZG, Dupuis JR, Glasier JRN, Sissons R, Moehrenschlager A, Shaffer HB, Sperling FAH (2025) Genomic and ecological divergence support recognition of a new species of endangered Satyrium butterfly (Lepidoptera, Lycaenidae). ZooKeys 1234: 291-307. https://doi.org/10.3897/zookeys.1234.143893
Mean ecological indicator values (EIVs) are widely used by vegetation ecologists throughout Europe. They allow for an efficient assessment of site conditions (bioindication) of vegetation plots when measurements of the physical, chemical or land use conditions would be too costly or time-consuming or not possible at all, for example, for the millions of legacy data.
The principle of EIVs was independently invented by Heinz Ellenberg in Germany and L.G. Ramensky in Russia. Due to their high utility, to date, more than 30 EIV systems have been published in Europe, largely varying in indicators, definitions, scaling and plant nomenclature, thus impeding pan-European studies. To overcome these impediments, in early 2023, within a few days, two EIV systems were published for Europe: the Ellenberg-type indicator values by Tichý et al. (2023) and the Ecological Indicator Values for Europe (EIVE) 1.0 by Dengler et al. (2023). The new systems seem to match an urgent need, as both papers are within the top 1% most cited papers of the year 2023 according to the Scopus database.
Four different weighting approaches in comparison. No cover weighting (i.e. either presence-absence or inverse niche-width weighting) gave significantly better results than cover weighting, while square-root cover weighting was intermediate (from the paper)
With 14,835 valid taxa, EIVE is more comprehensive than Tichý et al. (2023) with 8,679 valid taxa, and it also has a larger spatial coverage (for a brief comparison of both systems, see https://vegsciblog.org/2023/01/21/eive-1-0/). Other than that, it was largely unknown which of the two systems performs better and how their performance relates to the performance of regional EIV systems. Only Dengler et al. (2023) contained correlations of species temperature indicators with GBIF-derived temperature niches, which indicated that EIVE performs slightly better than Tichý et al. (2023) and clearly better than most of the regional EIV systems.
While comparing different EIV systems became relevant only recently, the question of how to compute mean EIVs from the species’ EIVs was unresolved for ages. Both cover-weighted and unweighted means are widespread in the literature but without clear arguments, let alone empirical support for one of the solutions (see the review by Diekmann 2003). One could also think of an intermediate solution like square-root cover weighting. Recently, Hájek et al. (2020) proposed inverse niche-width weighting and found that, in certain scenarios, it outperforms other weighting approaches.
In this study, we used three regional datasets of vegetation plots combined with in-situ measured pH values and near-surface annual temperatures, respectively. We used the two European EIV systems (Dengler et al. 2023; Tichý et al. 2023) and the two regional EIV systems applicable for the Swiss Alps (Ellenberg et al. 1991; Landolt et al. 2010). We combined them with four different weighting approaches, namely unweighted (presence), square-root cover weighted, cover weighted and inverse niche-width weighted, the latter only being applicable to “EIVE” and “Landolt”. The performance of the different combinations was assessed via Pearson’s correlation coefficients (r) between mean EIV values and actual site conditions.
The three-national Master Summer School “Biodiversity Monitoring” 2023 in the Swiss regional nature park “Ela” (Photo: Jürgen Dengler)
The first important observation was that – after taxonomic matching – only EIVE contained all valid taxa of the study, whether they were subspecies, species or aggregates, while the three other systems missed a significant number of valid taxa, either completely or by presenting them only at a higher or lower taxonomic level. In the latter cases, an approximative manual assignment would be, of course, possible, but it comes with additional work and arbitrariness. Moreover, while EIVE provides indicator values for all included taxa, just with different niche widths, the other three systems consider many taxa as indifferent and thus do not rate them. These aspects combined meant that dependent on the EIV system and the indicator, the three systems other than EIVE could not use between 12% and 40% of all occurring taxa for the calculation of mean indicator values.
When it comes to predicting site conditions, expectedly all four EIV systems can do that with only moderate differences in mean r values. However, when calculated with EIVE, the correlations were significantly better than when using “Tichý”. By contrast, “Ellenberg” and “Landolt” did not differ significantly from EIVE. Considering the weighting approach, no weighting performed significantly better than cover weighting, while square-root cover weighting was intermediate. In those two EIVE systems that provide niche-width information, no weighting and inverse niche-width weighting were equally good.
Some of the authors sampling a vegetation plot during the Summer School in an subalpine grassland (Photo: Jürgen Dengler)
Our partly unexpected results might be explained by the “wisdom of the crowd” principle, according to which estimates averaged over several independent sources give better results than the assessment by a single good expert (Galton 1907; Surowiecki 2004). Accordingly, EIVE values based on 31 EIV systems should be better than Ellenberg-type indicator values, which are based on 12 EIV systems. Likewise, applying no cover-weighting means that effectively more taxa enter into the mean EIV value.
For the practice of vegetation ecologists in Europe, our study suggests that one should definitely not use full cover-weighting. EIVE or well-established regional EIV systems can be used, but the system of Tichý et al. (2023) is less advisable. Evidently, our study was based on three relatively small samples collected in the very centre of Europe and only for two indicators. It would be important to conduct similar “calibration” studies also in other parts of Europe (or across the entire continent) and for the other indicators. Finally, it is worth mentioning that currently the preparation of EIVE 1.5 is in the final stages, which will contain more than 20,000 valid taxa.
Measuring soil pH in front of the Sonnenhof in Preda, where the Summer School took place (Photo: Jürgen Dengler)
The idea for this paper originated from the initial work on a project conducted as part of the Swiss-Polish-Ukrainian Master Summer School “Biodiversity Monitoring” in Switzerland, during which students could learn about the vegetation ecology of alpine habitats, improve their understanding of statistical concepts, and admire the undeniable beauty of the Swiss Alps. During the 10 days spent in Preda, Switzerland, we sampled vegetation plots and analysed soil pH, which, together with data from previous conductances of the class, laid the foundation for this paper. Despite the relative lack of experience, working under proper supervision and applying newly acquired skills from the Summer School helped further develop this idea and turn it into a proper scientific article.
The statistical principle of the “wisdom of the crowd” suggests that a larger group of people can collectively make better decisions than a smaller one of a few experts. Involving as many researchers as possible in the scientific process, even inexperienced students or young researchers, can help to innovate and create new solutions.
Original study
Ostrowski G, Aicher S, Mankiewicz A, Chusova O, Dembicz I, Widmer S, Dengler J (2025) Mean ecological indicator values: use EIVE but no cover-weighting. Vegetation Classification and Survey 6: 57-67. https://doi.org/10.3897/VCS.134800
References:
Dengler J, Jansen F, Chusova O, Hüllbusch E, Nobis MP, Van Meerbeek K, Axmanová I, Bruun HH, Chytrý M, … Gillet F (2023) Ecological Indicator Values for Europe (EIVE) 1.0. Vegetation Classification and Survey 4: 7–29. https://doi.org/10.3897/VCS.98324; see also https://vegsciblog.org/2023/01/21/eive-1-0/
Diekmann M (2003) Species indicator values as an important tool in applied plant ecology – a review. Basic and Applied Ecology 4: 493–506.
Ellenberg H, Weber HE, Düll R, Wirth V, Werner W, Paulißen D (1991) Zeigerwerte von Pflanzen in Mitteleuropa. Scripta Geobotanica 18: 1–248.
Galton, F. (1907) Vox populi. Nature 75: 450–451.
Hájek M, Dítě D, Horsáková V, Mikulášková E, Peterka T, Navrátilová J, Jiménez-Alfaro B, Tichý L, Horsák M (2020) Towards the pan-European bioindication system: Assessing and testing updated hydrological indicator values for vascular plants and bryophytes in mires. Ecological Indicators 116: 106527. https://doi.org/10.1016/j.ecolind.2020.106527
Landolt E, Bäumler B, Erhardt A, Hegg O, Klötzli F, Lämmler W, Nobis M, Rudmann-Maurer K, Schweingruber FH, … Wohlgemuth T (2010) Flora indicativa – Ökologische Zeigerwerte und biologische Kennzeichen zur Flora der Schweiz und der Alpen. 2nd ed. Haupt, Bern, CH, 378 pp.
Surowiecki, J. (2004) The wisdom of crowds. Doubleday, New York, US, 336 pp.
Tichý L, Axmanová I, Dengler J, Guarino R, Jansen F, Midolo G, Nobis MP, Van Meerbeek K, Attorre F., … Chytrý M (2023) Ellenberg-type indicator values for European vascular plant species. Journal of Vegetation Science 34: e13168. https://doi.org/10.1111/jvs.13168
China’s Guizhou Province has long been known for its remarkable biodiversity, but a recent study in Zoosystematics and Evolutionhas shed light on some of its creepier, lesser-known inhabitants: pirate spiders.
What is a pirate spider?
The name ‘pirate spiders’ refers to species belonging to the family Mimetidae. Also known (misleadingly) as cannibal spiders, they earned their name because of their araneophagic (spider-eating) nature.
Araneophagic behaviours.
Araneophagic behaviours.
Araneophagic behaviours.
These eight-legged predators don’t spin webs to catch prey; instead, they infiltrate the webs of other spiders and mimic the vibrations of prey or potential mates, then ambush the unsuspecting hosts when they come to investigate.
A recent research paper by Zhang et al. offers the most comprehensive survey to date of the pirate spider genus Mimetus in Central Guizhou, including two new species, bringing the provincial total to eight and giving Guizhou the highest Mimetus diversity in China.
Mimetussinicus.
China’s new species
Mimetus guiyang
Mimetusguiyang.
Discovered in Guiyang City, this species is known only from females collected via pitfall traps. Its most distinctive feature is the presence of large bubble-shaped ossified hair bases on the abdomen, a rarity among known Mimetus species. Its genital morphology and body patterns make it easily distinguishable from close relatives.
Mimetus lanmeiae
Mimetuslanmeiae.
Also found in Guiyang, this species was observed perched on a spider web, likely in the act of mimicry. Its unique palpal structures and small body size (~2.14 mm) distinguish it from other known Mimetus species. The name of the species honours the mother of the specimen collector. Hopefully this was meant as a compliment.
Other findings
New records: The researchers recorded two previously known species (M. caudatus and M. sinicus) for the first time in Guizhou, expanding their known range.
Rediscovery and redescription:M. caudatus, previously known only from male specimens, now has its female described in detail.
Molecular insights: DNA barcoding (COI gene sequencing) was used to support species identification and match males and females – a critical step for accurate taxonomy, especially given the subtle differences between males and females in Mimetus.
Original source
Zhang J, Zhang H, Liu J, Yu H, Xu X (2025) A survey of mimetid spiders (Araneae, Mimetidae) from Central Guizhou Province, China. Zoosystematics and Evolution 101(2): 711-734. https://doi.org/10.3897/zse.101.146895
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The exhibition was organised by Pensoft as part of the communication and dissemination activities for the EC Horizon project eLTER (European Long-Term Ecosystem Research)
In the past months, a unique photo exhibition showcasing European long-term ecosystem research sites was presented in the Bulgarian capital: Sofia.
This visually striking exhibition was not only a celebration of science and nature, but also an illustrative example of Pensoft’s integrated approach to communication, dissemination, and community engagement under the EU-funded eLTER project.
Coordinated by Pensoft’s Communications team, the initiative demonstrates how a carefully curated campaign can be transformed into a multi-layered outreach success. From conceptualization to realization, the team worked closely with the eLTER Coordination and Head Office to create what is now known as the eLTER Grand Campaign—a journey across Europe to visually document the human and ecological stories behind the research stations.
The eLTER photo exhibition was displayed at the ‘Lover’s bridge’ in Sofia, Bulgaria.
Over the course of three months, photographer Evgeni Dimitrov and his team traveled across 23 European countries, visiting some of the continent’s most advanced long-term ecosystem research sites. Using both drone and handheld cameras, the team captured nearly 3,000 photographs and 50 videos, bringing an artistic lens to the world of environmental science. The visual materials created during the Grand Campaign will be integrated into the eLTER database, becoming a valuable resource for researchers and stakeholders across Europe. These assets will support ongoing efforts in data visualisation, educational outreach, and long-term documentation of ecosystem changes.
“During the trip, it was fascinating to observe the work of scientists—each team reflecting the specific national context, yet united by a shared goal: to collect increasingly detailed data that can help us create a better environment.
I aimed to portray the research stations not only from a technical perspective—showing the equipment and how it’s used—but also within the broader environment: the nature around them, the living beings they interact with, and the people behind the machines who bring meaning to otherwise dry data.
explained photographer Evgeni Dimitrov.
Prof. Dr. Lyubomir Penev (Pensoft’s CEO and founder) and photographer Evgeni Dimitrov at the photo exhibition.
Seizing the momentum of the exhibition’s launch in Sofia, the Pensoft team also engaged with local media to broaden public awareness of the eLTER project. For example, the Bulgarian Telegraph Agency published a feature story, titled “Photo Exhibition Presents Research Stations across Europe in Sofia” in both Bulgarian and English, which highlights the exhibition, as well as the mission and goals of eLTER, with a special focus on the work of LTER-Bulgaria. Other local media also covered the news and promoting eLTER.
This strategic blend of visual storytelling, media engagement, and public outreach exemplifies Pensoft’s holistic approach to science communication.
From centrally managing a campaign, coordinating international logistics, and delivering high-quality media assets, to generating public interest and securing media coverage, this initiative shows how communication can become a vital extension of research impact.
To stay up to date with the activities and overall progress of the eLTER project, subscribe to the eLTER Newsletter, and follow eLTER on BlueSky,X, LinkedIn, and Instagram.
This June, the eLTER project will be holding its very first science conference with the aim to bring together scientists across disciplines who are striving to adopt a holistic approach to the understanding of the complex interactions between living organisms, humans, and their physical environment in the critical zone.
Pensoft is a project partner and a work package leader in the eLTER projects. eLTER receives funding from the European Union’s Horizon 2020 research and innovation programme under GA No 871126 (eLTER PPP) and GA No 871128 (eLTER PLUS), and the European Union’s Horizon Europe research and innovation programme under GA No 101131751 (eLTER EnRich).
Over forty years ago, Menno Schilthuizen, while still a high school student, conducted a study on carrion beetles at the Lichtenbeek estate near Arnhem. Using small traps baited with meat and other attractants, he recorded over a thousand beetles in the spring of 1982, meticulously documenting the species and their numbers.
Field notes from 1982.
Four decades on, Schilthuizen (now a professor of evolution and biodiversity at Leiden University) and his team collaborated with high school students from the Thomas a Kempis College in Arnhem to replicate the study with precision: at the same location, using the same methods, on the same dates. The goal was to examine how the carrion beetle population has changed over the years. Their findings have been published in the Biodiversity Data Journal; the article can be viewed online here.
Fieldwork.
Key findings: shifts in biodiversity
The high school students analysed the beetles that they collected. Their research revealed that some carrion beetle species have disappeared, while other, new species have appeared. However, the overall number of species and population densities have remained largely the same.
Sorting and mounting specimens.
One striking discovery was that common species have become even more abundant, while rare species have become even rarer. This widening gap in species commonness suggests a decline in biodiversity, which could signal the potential local extinction of the rarer species.
A citizen science initiative
The research was initiated by the Taxon Foundation, a nonprofit set up and headed by Schilthuizen, in collaboration with biology teacher Leonie Wezendonk of the Thomas a Kempis College. Taxon foundation specializes in biodiversity research conducted by school children, local residents, and other community scientists. The project was made possible through funding from the Netherlands Cultuurfonds and the Suzanne Hovinga Foundation.
Research article:
Schilthuizen M, van der Sterren T, Kersten I, Groenhof M, van der Meulen H, Wezendonk L (2025) Resampling a carrion beetle fauna after 40 years (Coleoptera, Staphylinidae, Silphinae, and Leiodidae, Cholevinae). Biodiversity Data Journal 13: e151206. https://doi.org/10.3897/BDJ.13.e151206
The initiative aims to make it easier to access and use biodiversity data associated with published research, aligning with principles of Findable, Accessible, Interoperable, and Reusable (FAIR) data.
The data portals offer seamless integration of published articles and associated data elements with GBIF-mediated records. Now, researchers, educators, and conservation practitioners can discover and use the extensive species occurrence and other data associated with the papers published in each journal.
A video displaying an interactive map with occurrence data on the BDJ portal.
The collaboration between Pensoft and GBIF was recently piloted with the Biodiversity Data Journal (BDJ). Today, the BDJ hosted portal provides seamless access and exploration for nearly 300,000 occurrences of biological organisms from all over the world that have been extracted from the journal’s all-time publications. In addition, the portal provides direct access to more than 800 datasets published alongside papers in BDJ, as well as to almost 1,000 citations of the journal articles associated with those publications.
“The release of the BDJ portal and subsequent ones planned for other Pensoft journals should inspire other publishers to follow suit in advancing a more interconnected, open and accessible ecosystem for biodiversity research,” said Dr. Vince Smith, Editor-in-Chief of BDJ and head of digital, data and informatics at the Natural History Museum, London.
— GBIF @biodiversity.social/@gbif (@GBIF) March 10, 2025
“The programme will provide a scalable solution for more than thirty of the journals we publish thanks to our partnership with Plazi, and will foster greater connectivity between scientific research and the evidence that supports it,” said Prof. Lyubomir Penev, founder and chief executive officer of Pensoft.
On the new portals, users can search data, refining their queries based on various criteria such as taxonomic classification, and conservation status. They also have access to statistical information about the hosted data.
Together, the hosted portals provide data on almost 325,000 occurrence records, as well as over 1,000 datasets published across the journals.
Imagine walking into a museum and realising that every specimen—a rare deep-sea snail, a giant fossil bone, a pressed plant, the DNA bank, endless drawers of perfectly pinned insects, even the notebooks and dusty photographs in the archive—is part of a vast, interconnected web of knowledge. Now, imagine if all of these specimens—across every museum in the world—were seamlessly linked, their data unified and accessible to scientists, historians, educators, and conservationists everywhere. This vision is at the heart of collectomics—a groundbreaking new term introduced in a recent paper published in Natural History Collections and Museomics.
Top: for more than 200 years, relevant object information was most often recorded in the form of hand-written labels and inventories. Bottom: Natural history museums directly intersect with social sciences, although the connections often go unrecognised. Top left: Jan-Peter Kasper/Universität Jena, Top right: Sigrid Hof / Senckenberg Research Institute and Museum Frankfurt, Bottom left: image of Dr Fritz Haas (seated) and unnamed companions (men and women), in the act of collecting a new species Unio valentinus, Bottom right: natural history objects also appear in the context of art objects, photo: Emőke Dénes.
What is Collectomics, and Why Does It Matter?
At its core, the collectomics concept represents a holistic modern view of museum collections. This is not only about digitising collections, or about preserving species; rather this new approach shifts the perspective to treating collections as a single global dataset. Museums represent a dynamic and growing resource that can help answer some of the most pressing challenges in science and conservation. With the integration of digital tools, standardized data practices, and a commitment to open accessibility, collectomics offers a way to transform fragmented collections into a powerful, collective resource that also integrates the cultural and historical aspects of museum collections.
Collectomics envisions museums as interconnected nodes in a worldwide network, rather than isolated repositories of knowledge, and holds this ambition as the primary goal of collections digitisation. This framework allows researchers to trace the movement of species, monitor environmental changes over time, and predict future ecological shifts with greater accuracy. More importantly, it connects beyond the realm of natural sciences to other disciplines. Natural history specimens are objects that were collected by people—including often-uncredited local knowledge holders.
The accessory information about the life and work of those human facets informs our use of museum objects. For example, if we can identify the handwriting on an original collection label, the lifetime of that person can constrain the collecting date even if it was not written down, and this adds to the biological knowledge about the specimen. Conversely, the types of objects and observations recorded by a person inform the understanding of the historical context.
For an increasingly diverse range of scientists, museum data contribute to work without actually depending on physically examining the original objects. They can analyse high-resolution images, genetic data, and historical records without leaving their own labs. Collectomics puts the original objects as the centre of gravity, acknowledging that preserved specimens underpin the scientific replicability of this rapidly growing suite of applications.
Natural history collections are iconic in biodiversity research and yet much of their potential impact remains untapped. Photograph by Sven Tränkner, Senckenberg Museum Frankfurt, Germany.
Looking Ahead: How Collectomics Can Shape the Future
Beyond envisioned technical advancements, collectomics is fundamentally about people. It is about the researchers who dedicate their lives to studying biodiversity, the curators who meticulously preserve specimens, and the students who might one day make groundbreaking discoveries using these collections.
A database is more than just a digital version of a collection—it is structured, searchable, and interconnected, allowing for new patterns and insights to emerge. Physical collections, like a library, must follow a particular a priori organisation. Books on a shelf might be arranged by subject, author, the colour of the dustjacket, or just the order they were unpacked. Zoological and botanical collections are typically arranged taxonomically, while geological collections are organised stratigraphically. And just like running your eyes across a bookshelf, physically browsing a collection often turns up serendipitous inspiration and discovery. Once specimens and their associated data are digitised, different kinds of unexpected relationships and trends can be uncovered. In a collection organised based on systematics, it is almost impossible to answer simple geographical questions like “How many specimens do you have from Malaysia?” because the relevant material is scattered across countless diverse taxonomic groups. The power of digitisation is enabling cross-cutting queries, on geography, time, and the activities of human contributors. This does not replace the need for well organised, well maintained physical collections, but instead unlocks the full potential.
Digital records are only a small fraction of global museum records. The black line represents a linear increase of the number of collection objects in time from the late 1700s. The dashed lines show three model projections for digitisation: in the best-case model prediction, museums might achieve complete digitisation at the earliest around the year 2071, but if there is no acceleration (red line) the global digitisation gap will continue to increase.
The importance of collections digitisation has long been recognised. However, this has progressed in a patchwork of small projects, often funded for specific research interests. As collections are continuously growing, the rate of growth may be outpacing even modern digitsation efforts. Collectomics offers an outlook that depends on, and also motivates, a total-collections approach. The power of collectomics emerges only when it is applied to everything, everywhere, in interconnecting museum collections including natural history and beyond.
By making collections more accessible, collectomics also contributes to democratising and diversifying science. Historically, access to rare specimens was limited to those with the resources to travel or with institutional connections. But with a collectomics approach, a high school student in a small town can study the same butterfly as a leading entomologist at a major university. A researcher in the Global South can contribute just as meaningfully to biodiversity studies as someone in the Global North. By embracing this new framework, museums are not only preserving history—we are unlocking its full potential.
Original source
Sigwart JD, Schleuning M, Brandt A, Pfenninger M, Saeedi H, Borsch T, Häffner E, Lücking R, Güntsch A, Trischler H, Töpfer T, Wesche K, Consortium C (2025) Collectomics – towards a new framework to integrate museum collections to address global challenges. Natural History Collections and Museomics 2: 1-20. https://doi.org/10.3897/nhcm.2.148855
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