Assessing the impact of invasive plants on ecosystems: a new framework

By combining several new advancements, the framework will aid in the management of plant invasions.

Invasive plant species pose a major threat to biodiversity and ecosystem health worldwide. However, predicting the exact impact of these invasions is challenging due to the complexity of interactions between invading species, native communities, and impacted ecosystems.

To combat this issue, researchers from the University of Freiburg and Justus Liebig University Giessen have developed a framework to better assess the impact of invasive plant species on ecosystems.

Outlined in a study published in the open-access journal NeoBiota, the framework combines new technologies and techniques to learn and predict how invasive plants alter ecosystems over time and in different environments.

Animated model visualisation of spatial-temporal dynamics of invader impacts. Click here to download a detailed explanation of the model.

The new framework integrates several modern advancements:

Environmental mapping: Progress in remote sensing and ecological monitoring allow researchers to capture detailed information about the environmental conditions of invaded areas. Drones, satellites, and advanced sensory networks can be used to create detailed ecosystem maps, which show how invasive species interact with their environment.

Functional tracers: These are specific indicators that reflect changes in ecosystem functions caused by invasive species. For example, researchers can track the impact of nitrogen-fixing invasive plants on ecosystems using nitrogen isotopes.

Spatio-temporal modelling: By combining environmental data with new modelling techniques, such as AI, researchers can create detailed models showing the spread and impact of invasive species on ecosystems over time. Such models can predict how changes in environmental conditions, such as climate change, might influence an invasive species’ success.

Infographic showing the mechanisms that determine the impact of invasive plants on ecosystems.
Mechanisms determining plant invasion impact.

Beyond scientific analysis, novel technologies also facilitate communication of ecological impacts, as the authors demonstrate in an animated 3D-video visualisation.

“The framework we’ve introduced offers researchers deeper insights into how invasive plant species interact with their environments, enabling more targeted management to lessen their ecological impact. We advocate for stronger collaboration between ecologists and technical experts to refine and expand these methods.

“Going forward, further research and integration of the wide range of recent methods and tools are needed to enhance the framework’s effectiveness.”

The research team behind the new framework: Christiane Werner, Christine Hellmann and André Große-Stoltenberg.

Original source

Werner C, Hellmann C, Große-Stoltenberg A (2024) An integrative framework to assess the spatio-temporal impact of plant invasion on ecosystem functioning. NeoBiota 94: 225-242. https://doi.org/10.3897/neobiota.94.126714

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Starved and hunted: the cruel reality of lion farming in South Africa revealed

Whistleblowers have exposed the controversial industry fuelling the illegal international trade of big cat bones.

South Africa’s lion farming industry is rife with cruelty and is fuelling the illegal international trade of big cat bones, according to a new research paper published in the scientific journal Nature Conservation.

The study by World Animal Protection is based on direct interviews with whistleblowing workers at two closed-access lion facilities in South Africa’s North West Province.

According to the report, legal activities such as commercial captive lion breeding and canned hunting – the hunting of captive-bred wild animals in small, fenced enclosures with no chance of escape – are being used to mask involvement in the illegal international trade of lion and tiger bones.

Four young lions behind a fence.
Lions at a commercial breeding facility in South Africa (not from the study).

Several animal welfare violations were also reported, including malnutrition, lack of clean water, filthy enclosures and animals being deliberately starved throughout the low-hunting season.

Illegal hunting practices abound, including animals being drugged and hunted within an hour of release in enclosures that violate legal minimum size requirements.

Finally, the whistleblowers reported hazardous conditions for workers at the facilities, and suggested there may be shifts towards commercial exploitation of other felid species like tigers which could be used as substitutes in the bone trade.

It is estimated that between 8,000-12,000 lions and other big cats, including tigers, are bred and kept in captivity in more than 350 facilities across the country. To evade detection during professional inspections, farm owners use various strategies, such as security cameras, patrols, and messaging apps.

“Our study highlights the troubling reality of South Africa’s captive lion industry. Legal activities are being exploited to facilitate illegal trade, and this is compounded by serious animal welfare violations and unsafe conditions for workers. Urgent action is needed to protect lions and people.”

Lead researcher Dr Angie Elwin, Research Manager at World Animal Protection.

Although the commercial captive breeding and canned hunting of lions remains legal, though poorly regulated in South Africa, the export of lion skeletons – including claws and teeth – was declared unconstitutional by the South African High Court in 2019.

In 2021, the South African Government announced its intention to immediately halt the “domestication and exploitation of lions, and to ultimately close all captive lion facilities in South Africa”.

However, a lack of enforcement of regulations and clarity on the future of the industry, has left a legal grey area, enabling some farms to operate what on the surface appear to be legitimate captive breeding and ‘canned’ trophy hunting businesses – but which in reality supply the illegal international big cat bone trade facilitated by organised crime gangs.

In light of these revelations, the study calls for the South African Government to implement a comprehensive and well-managed plan to transition away from current practices in the captive lion industry. Key recommendations include:

  • Full Audit of the Industry: To ensure all commercial captive lion farms are officially registered and compliant with regulations until the industry is phased out.
  • Breeding Moratorium: Establishment of an immediate moratorium on breeding to prevent further growth of the commercial captive lion population.
  • Prevention of Bone Stockpiling: Development and enforcement of plans to prevent the accumulation of lion bones, which risks fuelling the illegal international lion bone trade.
  • Phase out Plan: Enactment of a time-bound strategic plan to phase out the captive lion farming industry, ensuring ethical treatment of animals and safety for workers.

“The South African Government must take immediate action to fulfil its public pledge to end the controversial captive lion industry. Without a comprehensive time-bound plan and stringent enforcement, this commercial industry will continue to pose significant legal, animal cruelty, and conservation concerns.”

Senior researcher Dr Neil D’Cruze, Head of Wildlife Research at World Animal Protection.
Fraudulent microchip use and compliance issues found on controversial lion farms in the Free State, South Africa

This study serves as a crucial call to action for both the South African Government and the international community to address and resolve the complex issues surrounding the captive lion industry.

The publication comes at a time when South African NGO Blood Lions encourages the public to raise their voice by sharing the 2024 World Lion Day “You’re killing them softly” campaign message, aimed at informing tourists and visitors to lion farms about the hidden suffering and cruelty involved, and to sign this petition urging the South African government among others to extend the ban on captive lion breeding and trading to other predators.

Original source:

Elwin A, Asfaw E, D’Cruze N (2024) Under the lion’s paw: lion farming in South Africa and the illegal international bone trade. Nature Conservation 56: 1–17. https://doi.org/10.3897/natureconservation.56.124555

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Plants, prizes and paella: Pensoft at the International Botanical Congress 2024

Held every six years, the world’s largest botany event hosted thousands of researchers and enthusiasts in Madrid, Spain.

Towards the end of July 2024, members of the Pensoft team travelled to Madrid for the XX International Botanical Congress, where an estimated 3,000 botanists gathered for the biggest event of the year.

Held once every six years, the congress has enlarged its scope over more than a century to become an integrated forum for knowledge on the plant and mycological world.

Proceedings kicked off with a fantastic lecture from PhytoKeys Editor-in-Chief Sandy Knapp titled, “Why botany? Why now?” The following day, Thorsten Lumbsch, Editor-in-Chief of MycoKeys, gave a keynote lecture titled, “Unravelling diversity and evolution of lichens in the genomic era.”

In fact, many authors, editors and readers of Pensoft’s journals were in attendance. And several gave presentations, including a plenary talk by renowned PhytoKeys editor, Pamela S. Soltis, on the changing face of herbarium collections.

Pensoft and PhytoKeys stand at the International Botany Congress.
Denitsa Peneva greeting researchers at the Pensoft stand.
A man giving a presentation at the Pensoft and PhytoKeys stand at the International Botany Congress.
Lyubomir Penev giving a presentation to PhytoKeys editor.

The Pensoft team welcomed attendees with a bespoke stand, complete with print copies, illustrations and various promotional materials depicting beautiful species featured in PhytoKeys.

Lyubomir Penev, founder of Pensoft and founding editor of PhytoKeys, hosted a gathering of PhytoKeys editors at the stand, where he presented the story, latest results and highlights of the journal.

A woman posing with a PhytoKeys journal at the Pensoft and PhytoKeys stand at the International Botany Congress.
Two men posing at the Pensoft and PhytoKeys stand at the International Botany Congress.
A man and a woman posing at the Pensoft and PhytoKeys stand at the International Botany Congress.
Researchers who found their publications on display at the Pensoft stand.

The congress included numerous lectures, symposia sessions, workshops and meetings across a variety of subject matters, all of which can be found on the IBC 2024 website. The major topics of the event were:

  • Systematics, phylogenetics, biogeography and evolution
  • Ecology, environment and global change, including invasive species and plant-animal interactions
  • Biodiversity and conservation
  • Structure, physiology and development, including Evo-Devo
  • Genetics, genomics and bioinformatics
  • Plants and Society

At the closing ceremony, multiple awards were presented, including Pensoft’s Early Career Researcher Talk Award. Sandy Knapp presented the award to Sonia Molino for her talk on a global study of the genus Parablechnum, a lineage of ferns of the family Blechnaceae. The award grants her a free publication in PhytoKeys. 

Describing her study, Sofia Molino said: “To date there has been no study that takes into account all the centres of diversity of the genus at the same time, and what we have found is that it has a very complex evolutionary history, with several cases of cryptic diversity, hybridisation and rapid radiation.”

On her plans to use her free publication for a pending study on a series of novelties within Parablechnum in Bolivia, she added: “Although this is probably the country in South America where Parablechnum has been studied the most, after one expedition we have still found a lot of new things, such as several undescribed species, hybrids and new localities of some species that were only known from type material.”

The next International Botanical Congress is in 2029 and will take place in South Africa, where the Pensoft team looks forward to seeing plenty of new faces and old friends!

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The race to discover biodiversity: 11 new marine species and a new platform for rapid species description

The initiative boasts the discovery of eleven new marine species from all over the globe, occurring at depths from 5.2 to 7081 meters.

Accelerating global change continues to threaten Earth’s vast biodiversity, including in the oceans, which remain largely unexplored. To date, only a small fraction of an estimated two million total living marine species have been named and described. A major challenge is the time it takes to scientifically describe and publish a new species, which is a crucial step in studying and protecting these species. The current scientific and publishing landscape often results in decade-long delays (20-40 years) from the discovery of a new species to its official description. As an alternative to this, the Ocean Species Discoveries initiative was launched, offering a new platform for rapid but thorough taxonomic description of marine invertebrate species.

Lepechinella naces, a newly described amphipod, on a black background.
One of the newly described species, Lepechinella naces.

Ocean Species Discoveries is coordinated by the Senckenberg Ocean Species Alliance (SOSA), a project of the Senckenberg Research Institute and Natural History Museum Frankfurt. SOSA’s goal is to facilitate the discovery, protection, and awareness of marine invertebrate species before they become extinct.

The project coordinated 25 different researchers and produced data on thirteen marine invertebrate taxa, including one new genus, eleven new species, and one redescription and reinstatement. The species, which originate from all over the globe and at depths from 5.2 to 7081 meters, are brought together in an open-access publication in the Biodiversity Data Journal.

Only by leveraging the collective strengths of global progress, expertise, and technological advancements, will we be able to describe the estimated 1.8 million unknown species living in our oceans.

Prof. Dr. Julia Sigwart

This is the first of a series of publications related to SOSA’s initiative, in collaboration with Biodiversity Data Journal, presenting a revolutionary approach in new species descriptions, thanks to which the publication of new species takes years, sometimes even decades, less. The ARPHA publishing platform, which powers the Biodiversity Data Journal, further expedites species descriptions and their use in studies and conservation programs by employing a streamlined data publishing workflow. ARPHA automatically exports all species data, complete with images and descriptions, to GBIF—the Global Biodiversity Information Facility and the Biodiversity Literature Repository at Zenodo, from where other researchers can easily find and use them.

Dorsal, ventral, and lateral images of a newly described hydrothermal vent limpet, Lepetodrilus marianae, on a black background.

One of the new OSD species – a hydrothermal vent limpet, Lepetodrilus marianae. Photo credit: Chong Chen, Hiromi Kayama Watanabe, and Miwako Tsuda

One of the new species described in the Ocean Species Discoveries is Cunicolomaera grata, a curious amphipod whose burrows along the seafloor perplexed scientists. Another is a wrinkly-shelled limpet called Lepetodrilus marianae that lives on hydrothermal vents, underwater volcanoes in the deep-sea where temperatures can reach 400 degrees C. Normally, the descriptions for these two very different species wouldn’t be in the same publication, but this new publication format allows for species descriptions from different marine invertebrate taxa to be published together in one ‘mega-publication,’ offering a huge incentive for researchers to make their discoveries public.

Top: a newly described hole-making amphipod, Cunicolomaera grata, on a black background. Bottom: A photo of burrows on the ocean floor where the amphipod is presumed to live.
One of the new OSD species – a hole-making amphipod, Cunicolomaera grata. Photo credit: Anne Helene S. Tandberg and Anna M. Jażdżewska

“Currently, there’s a notable delay in naming and describing new animals, often because journals expect additional ecological or phylogenetic insights. This means many marine species go undescribed due to lack of data. OSD addresses this by offering concise, complete taxonomic descriptions without requiring a specific theme, refocusing attention on taxonomy’s importance,” says Dr. Torben Riehl, who is one of the researchers featured in Ocean Species Discoveries.

Top: Psychropotes buglossa, a newly described sea cucumber species. Bottom: Psychropotes buglossa grabbed by the mechanic arm of a remote-operated vehicle.

The reinstated OSD species – a purple long-tailed sea cucumber, Psychropotes buglossa. Photo credit: Amanda Serpell-Stevens, Tammy Horton, and Julia Sigwart

Reducing the time it takes to get from discovering a new animal to a public species description is crucial in our era of increasing biodiversity loss. The wrinkly-shelled limpet and two other species described in the Ocean Species Discoveries live in hydrothermal vent zones – an environment threatened by deep-sea mining. Another OSD species, Psychropotes buglossa, a purple sea cucumber (sometimes also called a gummy squirrel), lives in the North Atlantic, but similar species live in areas of high economic interest, where polymetallic-nodule extraction could soon endanger sea life. Threats like these risk driving species to extinction before we even get the chance to know and study them. Through efforts like SOSA’s Ocean Species Discoveries, we can get closer to understanding the biodiversity of our oceans and protecting it before it’s too late.

Dorsal and ventral views of a newly described species of deep-sea chiton, Placiphorella methanophila.

One of the new OSD species – a deep-sea chiton, Placiphorella methanophila. Photo credit: Katarzyna Vončina

“Only by leveraging the collective strengths of global progress, expertise, and technological advancements, will we be able to describe the estimated 1.8 million unknown species living in our oceans. Every taxonomist specialized on some group of marine invertebrates is invited to contribute to the Ocean Species Discoveries,” says Prof. Dr. Julia Sigwart in conclusion.

Research article:

(SOSA) SOSA, Brandt A, Chen C, Engel L, Esquete P, Horton T, Jażdżewska AM, Johannsen N, Kaiser 5, Kihara TC, Knauber H, Kniesz K, LandschoffJ, Lörz A-N, Machado FM, Martínez-Muñoz CA, Riehl T, Serpell-Stevens A, Sigwart JD, Tandberg AHS, Tato R, Tsuda M, Vončina K, Watanabe HK, Went C, Williams JD (2024) Ocean Species Discoveries 1-12 — A primer for accelerating marine invertebrate taxonomy. Biodiversity Data Journal 12: e128431. https://doi.org/10.3897/BDJ.12.e128431

Local scientists discover new species of cave pseudoscorpion named after Boulder, Colorado

A research associate with the Zoology Department at the Denver Museum of Nature & Science, found the new pseudoscorpion along with his wife and son.

Denver Museum of Nature & Science researchers discovered of a new species of cave-dwelling pseudoscorpion near the Flatirons in City of Boulder Open Space and Mountain Parks. David Steinmann, a research associate with the Zoology Department at the Denver Museum of Nature & Science, found the new pseudoscorpion along with his wife Debbie and son Nathan. The newly discovered species, Larca boulderica named after Boulder, marks the sixth cave-adapted species of the Larca genus from caves in North America. 

The new species of pseudoscorpion, Larca boulderica, on rocky substrate.
The new species of pseudoscorpion, Larca boulderica, inside the cave. Photo by David Steinmann

In 2008, the Steinmann family went looking for invertebrates in a small cave west of Boulder when David saw an unusual-looking pseudoscorpion clinging to the bottom of a jagged stone. Steinmann sent the specimens to Mark Harvey, a pseudoscorpion expert at the Western Australian Museum, and Harvey determined that the tiny animals represent a new species. Harvey and Steinmann described and named Larca boulderica in a paper recently published in ZooKeys. The specimen used in the species description will now be deposited in the arachnology collection at the Denver Museum of Nature & Science.  

Dave and Debbie Steinmann at the barred entrance of a small cave.
Dave and Debbie Steinmann at a small cave where L. boulderica lives. Photo by Ryan Prioreschi

“Dave Steinmann’s discovery of new species of pseudoscorpions from Colorado’s cave systems demonstrates how much we still have to discover about this planet’s biodiversity,” said Paula Cushing, senior curator of invertebrate zoology at the Museum. “Dave’s work in these challenging and unique habitats is critical in such discoveries.”  

About the size of a sesame seed with crab-like pincers, Larca boulderica survives in dry and dusty habitats such as packrat middens. Boulder is the only place in the world they are known to live. Pseudoscorpions have been around for millions of years, including when Tyrannosaurus rex roamed the planet.

A photo of the pseudoscorpion Larca boulderica under a microscope.
Larca boulderica as seen under a microscope. Photo by David Steinmann

“Pseudoscorpions are fascinating creatures. They look like tiny scorpions without a stinger. Few people encounter them, and even fewer find them in caves,” said Frank Krell, senior curator of entomology at the Museum. “David Steinmann has found many tiny creatures in Colorado caves that nobody has found before. The city of Boulder is now immortalized in the name of this new species.” 

Research article:

Harvey MS, Steinmann DB (2024) A new troglomorphic species of Larca (Pseudoscorpiones, Larcidae) from Colorado. ZooKeys 1198: 279-294. https://doi.org/10.3897/zookeys.1198.120353

Press release originally published by the Denver Museum of Nature and Science. Republished with permission.

From science to literature: New arachnid taxa named after Gabriela Mistral and Pablo Neruda

A taxonomic revision describes 22 new species, with two of the names honoring prominent figures of Chilean culture.

Guest blog post by Willians Porto and Abel Pérez González

The third-largest group of arachnids, in terms of number of known species, is the harvestmen, with nearly 7,000 described species, ranking just behind spiders and mites. Despite this number, a considerable portion of their diversity is unknown, and many species still remain undescribed.

An individual of Fresiax spinulosa in a natural setting.
Fresiax spinulosa. Photo by Abel Pérez-González

The harvestmen of the family Triaenonychidae comprise 404 known species and have a peculiar distribution. They are found in temperate regions of the southern hemisphere, with representatives in Australia, New Zealand, South Africa, Madagascar, and southern South America— a typical temperate Gondwana distribution. In the America continent, the diversity is concentrated in the Southern Cone of South America, mainly in the Chilean Valdivian Forest, where 26 species were previously recorded.

A map of Chile showing the distribution of 16 harvestman species.
A map of Chile showing the distribution of Lautaria ceachei.
A map of Chile showing the distribution of Laftrachia robin.
A map of Chile showing the distribution of Chilenuncia chilensis and Chilenuncia rostrata.
A map of Chile showing the distribution of Mistralia ramirezi and Mistralia verrucosa.
A map of Chile showing the distribution of five harvestman species.
Distribution maps for 27 harvestman species in Chile.

In our latest work published in ZooKeys, we present the result of a taxonomic and systematic revision of the South American triaenonychids previously included in the mainly New Zealand genus Nuncia. After examining hundreds of specimens, we redescribed all the four previously known species and described 22 new ones. All these species were included in six genera─one resurrected and five new to science─regarding the genus Nuncia as exclusively to New Zealand.  The new systematic arrangement was supported by a comprehensive new phylogenetic analysis based on molecular (UCE + Sanger) data.

An individual of Laftrachia robin in a natural environment.
Laftrachia robin, one of the new species described in the study. Photo by Abel Pérez-González

The proposed phylogenetic hypothesis reveals the relationships between South American Triaenonychidae and their counterparts from the rest of the world, indicating that the diversity of triaenonychids in the Southern Cone is polyphyletic, reflecting an ancient diversification predating the Gondwana breakup.

A brown spider in a natural environment.
A species of the newly described Nerudiella genus. Photo by Abel Pérez-González
A bust of Chilean poet Pablo Neruda.
A bust of Pablo Neruda. Photo by Wally Gobetz under a CC BY-NC-ND 2.0 license

Our work represents the most comprehensive contribution to the taxonomy and systematic of South American triaenonychids, almost doubling the number of previously known species. For naming the new taxa, we select names derived from geography, historical figures, and recognized intellectuals. Since most of the newly discovered fauna is distributed across various regions of Chile, the authors decided to honor two prominent figures of Chilean literature. The poet Gabriela Mistral (1889-1957), Nobel laureate in literature in 1945, was honored with the new genus Mistralia, and Pablo Neruda (1904-1973), Nobel laureate in literature in 1971, was honored with the new genus Nerudiella. In addition to tributes to globally renowned Chilean poets, the new species also include dedications to members of the arachnological scientific community and researchers who collaborated on this work.

The taxonomic revision includes hundreds of images that are extremely important for species identification. These images consist of various optical microscopy, stereomicroscopy, and numerous scanning electron microscopy micrographs.

Scanning electron microscope image showing detailed views of the male genitalia of Mistralia verrucosa.
Scanning electron microscope image showing various detailed views of the male genitalia of Mistralia verrucosa.

This work is one of the products of years of collaboration between the Arachnology Division of the Museo Argentino de Ciencias Naturales Bernardino Rivadavia (MACN) and the Giribet Lab in Harvard University and Museum of Comparative Zoology (MCZ). It also represents a continuation of the collaboration initiated in the 20th century by the late Argentinean arachnologist Emilio Maury (MACN) with the Chilean zoologist Tomás Nicolás Cekalovic (Museo de Zoología de la Universidad de Concepción) and the American Museum of Natural History.

Research article:

Porto W, Derkarabetian S, Giribet G, Pérez-González A (2024) Systematic revision of the South American “Nuncia” (Opiliones, Laniatores, Triaenonychidae). ZooKeys 1207: 1-149. https://doi.org/10.3897/zookeys.1207.120068

New clam species discovered in South Africa’s kelp forest

It was discovered while working on the 1001 Seaforest Species project, which focuses on raising awareness about the rich kelp bed ecosystems of South Africa.

A new study sheds light on the unexplored diversity of galeommatoidean bivalves, a little-known group of marine mollusks, from the western coast of South Africa. The research, led by Paul Valentich-Scott from the Santa Barbara Museum of Natural History, along with collaborators from the University of Cape Town, Sea Change Trust, Stellenbosch University, and the University of Colorado Boulder, offers a curious glimpse into the habitats, symbiotic relationships, and taxonomy of these interesting creatures.

An unusual galeommatid clam, Melliteryx mactroides, living in tidepools near Cape Town, South Africa. Video by Jannes Landschoff

Published in the scientific journal ZooKeys, the study focuses on four species of galeommatoidean bivalves collected from the Western Cape region of South Africa. Among these is one new species, Brachiomya ducentiunus. This small clam, which is only 2 mm (less than 1/8th inch) in length, spends its life crawling between the spines of sea urchins.

The newly discovered species, Brachiomya ducentiunus, crawing on a sea urchin spine. Photo by Craig Foster

The new species has so far only been found in one locality in False Bay, South Africa, where it was found attached to the burrowing sea urchin Spatagobrissus mirabilis in coarse gravel at a depth of about 3 m. It has not been observed free-living, without the host urchin.

Brachiomya ducentiunus was discovered while preparing and working on the 1001 Seaforest Species project, a research and storytelling program aimed at increasing awareness of regional kelp bed ecosystems colloquially referred to as ‘the Great African Seaforest’.

Dozens of the new species crawling on the surface of a sea urchin. Photo by Charles Griffiths

“This study marks a significant advancement in our understanding of the biodiversity and ecological interactions of galeommatoidean bivalves,” says lead author Paul Valentich-Scott. “By uncovering the hidden lives of these small but ecologically important organisms, we hope to contribute to the broader knowledge of marine biodiversity and the conservation of these unique habitats.”

Co-author Charles L. Griffiths, emeritus professor at the University of Cape Town, says, “A large proportion of smaller marine invertebrates remain undescribed in western South Africa and almost any project that samples specialized habitats turns up many new records and species.”

The new clam species feeding between the spines of a sea urchin. Video by Craig Foster

In a similar vein, co-author Jannes Landschoff, marine biologist at the Sea Change Trust, says “Creating foundational biodiversity knowledge is a most important step to the humbling realization of how fascinating and uniquely diverse a place is. I see this every day through our work in the rich coastal waters of Cape Town, where an extensive underwater kelp forest, the ‘Great African Seaforest,’ grows.”

Research article: 

Valentich-Scott P, Griffiths C, Landschoff J, Li R, Li J (2024) Bivalves of superfamily Galeommatoidea (Mollusca, Bivalvia) from western South Africa, with observations on commensal relationships and habitats. ZooKeys 1207: 301-323. https://doi.org/10.3897/zookeys.1207.124517

Biodiversity Research in Central America: a new special issue from Neotropical Biology & Conservation

The article collection highlights an array of contemporary research across this biodiverse region.

Guest post by Monika Lipińska, academic editor and contributing author of Biodiversity Research in Central America.

Central America, a region brimming with ecological richness and diversity, presents a unique and complex tapestry of life. From its dense tropical forests and majestic mountain ranges to its vibrant coastal ecosystems and intricate freshwater networks, Central America is a biological treasure trove. The region’s varied habitats support an incredible array of species, many of which are endemic and face critical conservation challenges.

Biodiversity Research in Central America is a special issue in the open-access journal Neotropical Biology and Conservation, consisting of articles that highlight the breadth and depth of contemporary research across this biodiverse region. Each article sheds light on different aspects of the flora and fauna, offering insights into the ecology, behavior, and conservation of various species and ecosystems. The research presented here not only enhances our understanding of Central America’s natural wealth but also underscores the urgent need for effective conservation strategies to preserve it.

The articles

Ocelot (Leopardus pardalis) Breeding Effort and Productivity for Seasonal Tropical Forests on the Central Mexican Pacific

A still of two ocelots. taken from camera footage. One is circled.

The opening article examines the reproductive ecology of ocelots in a specific tropical forest, providing valuable data on their breeding success and the environmental factors that influence it.

DOI: https://doi.org/10.3897/neotropical.19.e114194

New Records of Neogale frenata and Potos flavus from Sierra Madre de Oaxaca, Mexico

A long-tailed weasel beside a human hand.

New occurrences of these elusive species are documented, expanding our knowledge of their distribution and highlighting the importance of ongoing field surveys.

DOI: https://doi.org/10.3897/neotropical.19.e117799

New Records of Two Marsupials (Didelphimorphia, Didelphidae) and Conservation Notes from Southern Mexico

A Central American woolly opossum on a man's shoulder.

Researchers present new findings on marsupial species, offering critical insights into their habitats and the conservation challenges they face in this region.

DOI: https://doi.org/10.3897/neotropical.19.e119836

The Amphibians and Reptiles of Cusuco National Park: Updates from a Long-Term Conservation Programme

A frog on a branch.

Years-long conservation efforts in Cusuco National Park, Northwest Honduras, are detailed in this article, showcasing the dynamic changes and conservation successes in this biodiverse area.

DOI: https://doi.org/10.3897/neotropical.19.e120902

A Record of a Non-Fatal Attack of an American Crocodile (Crocodylus acutus) in the ‘Rio Segovia’ on the Honduras-Nicaragua Border

A dead crocodile.

Researchers provide a unique case study of human-wildlife interactions, emphasizing the importance of understanding and managing these encounters.

DOI: https://doi.org/10.3897/neotropical.19.e120434

Trophic Ecology and Trophic Niche Overlap of Two Sympatric Species of Rhamdia (Siluriformes: Heptapteridae) from Northeast Oaxaca, Mexico

A map of Oaxaca, Mexico.

Exploring the dietary habits and ecological relationships between these catfish species, this article contributes to our understanding of aquatic ecosystems.

DOI: https://doi.org/10.3897/neotropical.19.e119908

Interaction Intensity as Determinant of Geographic Range Overlap Between Ant-Following Birds and Army Ants

A blue-and-red bird on a branch.

Researchers delve into the fascinating interactions between birds and their insect prey, revealing how these dynamics shape species distributions.

DOI: https://doi.org/10.3897/neotropical.19.e117386

Ants in the Clouds: A Preliminary Checklist of the Ant (Hymenoptera, Formicidae) Fauna of a Honduran Cloud Forest Ecosystem, Featuring a Key to Country Genera

A winged ant.

In this article, the diverse ant fauna of a cloud forest is cataloged, providing a foundation for future ecological and taxonomic studies.

DOI: https://doi.org/10.3897/neotropical.19.e119775

The Poorly-Known Amblypygid Fauna (Arachnida, Amblypygi) of Honduras, Central America: An Overview

An Amblypygid, a type of arachnid.

An overview of this lesser-studied arachnid group, highlighting their ecological roles and the need for further research.

DOI: https://doi.org/10.3897/neotropical.19.e113507

Pollination of Guatemalan Orchids – State of Knowledge

A hummingbird feeding from an orchid.

A review of current understanding and gaps in the study of orchid pollination, emphasizing the intricate relationships between plants and their pollinators.

DOI: https://doi.org/10.3897/neotropical.19.e119499

A Preliminary Assessment of Water Quality in Silvopastoral Systems of Panama’s Dry Tropical Forest

A map of Panama.

Researchers assess the impacts of land-use practices on water quality, providing insights into sustainable agricultural practices.

DOI: https://doi.org/10.3897/neotropical.19.e111865

Dispersal Capacity as Assessed by Distance-Decay Relationships is Lower for Aquatic Shredder Insects than Aquatic Non-Shredder Insects in a Neotropical River Network

A map showing streams located in distinctive vegetation classes within Salinas, Cahabon.

The dispersal abilities of aquatic insects are compared in this paper, highlighting the factors influencing their distribution patterns.

DOI: https://doi.org/10.3897/neotropical.19.e111865

The Trichoptera of Panama XXVII. The Third Benchmark—A Waypoint to the Future

A map of Panama.

This research marks a significant milestone in the study of caddisflies, summarizing progress and future directions in this field.

DOI: https://doi.org/10.3897/neotropical.19.e113487

Gradual Change and Mosaic Pattern of Macrofaunal Assemblages Along Depth and Sediment Gradients in a Tropical Oceanic Island

A graph showing the association of macrofauna with environmental variables.

An exploration of the complex patterns of marine life distribution, providing insights into the factors shaping these communities.

DOI: https://doi.org/10.3897/neotropical.19.e117876

Marine Nematodes of Costa Rica: State of the Art

A map of Costa Rica.

Finally, this paper reviews the current knowledge of these important but often overlooked organisms, emphasizing their ecological significance and the need for further research.

DOI: https://doi.org/10.3897/neotropical.19.e115345

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Together, these articles represent a significant contribution to the field of biodiversity research in Central America. They underscore the importance of continued scientific exploration and conservation efforts to protect the rich natural heritage of this remarkable region. We hope that this special issue will inspire further research and action to preserve Central America’s biodiversity for future generations.

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New species, old threats: two hillstream suck-loaches discovered in China

The new-to-science fish face an uncertain future due to pollution and unsustainable harvesting.

All too often, researchers discover new species only to learn they are already at risk of extinction.

So when researchers from Shanghai Ocean University and Yunnan Agricultural University identified two new species from the upper Pearl River system in southwest China, they were likely unsurprised to find the fish facing major threats from pollution and overharvesting.

Three views of a flat-bottomed fish species with bumps on its head.
Beaufortia granulopinna holotype from Lizhou River, a stream tributary of Bo′ai River of the Pearl River basin, at Tianlin County, Guangxi Province, China.

The new species, Beaufortia granulopinna and Beaufortia viridis, are members of the family Gastromyzontidae, also known as hillstream suck-loaches. They are highly specialised, with compressed bodies, flattened bottoms, and greatly expanded paired fins forming suction cup-like structures. These adaptations enable them to adhere to rocky substrates, resisting currents while feeding on algae and invertebrates.

Researchers discovered the new species during surveys studying aquatic life in various waterways in Yunnan and Guangxi between 2022 and 2024. The study, led by Jing-Chen Chen, offers new insights into the taxonomy and molecular phylogeny of the Beaufortia pingi species group, of which the two discoveries are likely members.

Three views of a flat-bottomed fish species witha green and brown colouration.
Beaufortia viridis holotype from Wuming River, a stream tributary to the You River of the Pearl River basin, at Wuming District, Nanning City, Guangxi Province, China.

Although research on the Beaufortia pingi group is mostly in its initial stages, the situation is far from optimistic. These species have become popular ornamental fish in China, and aquarium trade operators reap substantial profits through their capture and sale. Among them are those who act with disregard for sustainability, using destructive harvesting practices.

Given the loaches’ preference for fast-flowing water, projects that obstruct rivers can easily lead to regional extinction. Their low pollution tolerance and sensitivity to changes in water quality also contribute to the significant reductions in population that many species are suffering.

Landscape image of a river and trees.
Collection site of Beaufortia viridis from Wuming River, a stream tributary to the You River of the Pearl River basin, Wuming District, Nanning City, Guangxi Province, China. Photographed by Jing-Chen Chen.

In the habitat of B. viridis, Wuming District, Nanning City, most small tributaries have been modified into step-like reservoirs for water storage, and those near agricultural irrigation areas are polluted, rendering these areas unsuitable for their survival. Interestingly, however, a stable population was discovered inside a commercial eco-camping site left untouched to satisfy consumers’ pursuit of “pristine nature.”

The researchers suggest that future efforts should focus on increasing attention to these species, conducting fundamental research, and further exploring their scientific and economic potential. Simultaneously, it is crucial to enhance habitat conservation awareness, scientifically plan, and develop sustainably, ensuring harmonious coexistence between humans and nature.

Original source

Chen J-C, Li J-J, Tang W-Q, Pu X-R, Lei H-T (2024) Taxonomic resolution of the hillstream suck-loach Beaufortia pingi species group (Cypriniformes, Gastromyzontidae) and two new species from Southwest China– Beaufortia granulopinna and Beaufortia viridis. Zoosystematics and Evolution 100(3): 941-963. https://doi.org/10.3897/zse.100.124370

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Low-cost, high-volume imaging for entomological digitization

The flexibility of the imaging rig could benefit many potential users who are looking for an accessible method for larger collections of specimens

Guest blog post by Corey Feng and Dirk Steinke

The demand for the digitization of natural history collections has increased with the advancement of imaging technologies. Large collections composed of millions of insect specimens are exploring efficient strategies and new technologies to digitize them. However, many of these new systems are quite elaborate and expensive, creating a need for more affordable and easy-to-use equipment. 

75-by-47-cm foam platform with pinned insects in dorsal and lateral positions.

Creating a digital image for every specimen is an essential part of the DNA barcoding workflow at the Centre for Biodiversity Genomics (CBG). A newly designed imaging rig has enabled the CBG to quickly and efficiently image specimens at high quality while controlling the specimen’s orientation to emphasize key morphological characters. This system allowed the CBG to take some 190,000 images over the past year.

The SLR rig is placed on a heavy-base table to minimize vibration. The inset shows the actual rig area with specimens on the styrofoam base.

Our new ZooKeys study describes this imaging rig, which was mainly created for pinned specimens. It is inexpensive and easy to install as it uses a camera mounted to a CNC machine rig to photograph specimens at high capacity. By using a foam board to array specimens, the user can choose their orientation, which contrasts some existing methods that do not provide such flexibility. This setup produces 95 high quality images within half an hour.

Panel of example images taken with the SLR rig.

The flexibility of the imaging rig could benefit many potential users who are looking for an accessible method for larger collections of specimens. By alternating various parameters, such as the distance between the camera and specimens or the type of camera and lens used, users can adapt their system to specimens of varying sizes. With further changes to the array, the imaging rig can also be adapted to support imaging specimens on slides, within vials, or other storage solutions.

Research article:

Steinke D, McKeown JTA, Zyba A, McLeod J, Feng C, Hebert PDN (2024) Low-cost, high-volume imaging for entomological digitization. ZooKeys 1206: 315-326. https://doi.org/10.3897/zookeys.1206.123670