Tag: lichens

Lichens on Mars! (sort of)

A survey of lichen species at the Mars Desert Research Station in Utah, USA and Flashline Mars Arctic Research Station in Nunavut, Canada.

Once you know where to look for them, lichens are everywhere! These composite organisms – fungal and photosynthetic partners joined into a greater whole, can survive on a vast array of surfaces, from rocks and trees to bare ground and buildings. They are known from every continent, and almost certainly every land mass on planet Earth; some species have even survived exposure to the exterior of the International Space Station. This hardy nature has long interested researchers studying what life could survive on Mars, and the astrobiologists studying life on Earth as an analog of our planetary neighbour. In the deserts surrounding two Mars analog stations in North America, lichens comprise such an important part of the local ecosystems that they inspired a biodiversity assessment with a unique twist: this collections-based inventory took place during a simulated mission to Mars!

Crew Biologist Anushree Srivastava collecting lichens near the Mars Desert Research Station while wearing a simulated spacesuit, an important part of analog space missions at this research site. Photo credit: Mars 160 Crew/The Mars Society

The Mars Desert Research Station in Utah, USA (on Ute and Paiute Territory), and the Flashline Mars Arctic Research Station in Nunavut, Canada (in Inuit Nunangat, the Inuit Homeland) are simulated Martian habitats operated by The Mars Society, where crews participate in dress rehearsals for crewed Martian exploration. While learning what it would take to live and work on our planetary neighbour, these “Martians” frequently study the deserts at both sites, often exploring techniques for documenting microbial life and their biosignatures as a prelude to deploying these tools and methods off world. These studies are enhanced by a comprehensive understanding of the ecosystems being studied, even if they are full of Earthbound life. During the Mars 160 – a set of twin missions to both Utah and Nunavut in 2016 and 2017 – our team undertook a floristic survey of the lichen biodiversity present at each site.

The Mars Desert Research Station is nestled in amongst the red sandstone hills of southeast Utah, USA, in a geological analog to Mars. Photo credit: Paul Sokoloff/Canadian Museum of Nature

During simulated extra-vehicular activities, Mars 160 mission specialists wearing simulated spacesuits scouted out various habitats at both stations, seeking out lichen species growing in various microhabitats. Collecting over 150 specimens, these samples were “returned to Earth”, and identified at the National Herbarium of Canada at the Canadian Museum of Nature. Through morphological examination, investigations of internal anatomy and chemistry, and DNA barcoding, “Mission Support” identified 35 lichen species from the Mars Desert Research Station, and 13 species from the Flashline Mars Arctic Research Station.

Rich lichen communities are abundant in the deserts surrounding the Mars Desert Research Station, with visible crusts being one part of a vibrant ecosystem. Photo credit: Paul Sokoloff/Canadian Museum of Nature

These species, along with photographs and a synopsis of their identifying characteristics, are summarized in a new paper out now in the open-access journal Check List. This new annotated checklist should prove useful to future crews working at both analog research stations, while also helping Earthly lichenologists better understand the distribution of these fascinating organisms, including new records of rarely reported or newly described species from some of Earth’s most interesting, and otherworldly habitats.

Research article:

Sokoloff PC, Srivastava A, McMullin RT, Clarke J, Knightly P, Stepanova A, Mangeot A, Laroche C-M, Beattie A, Rupert S (2024) An annotated checklist of the lichen biodiversity at two Mars analog sites: The Mars Desert Research Station (Utah, USA) and The Flashline Mars Arctic Research Station (Nunavut, Canada) recorded during the Mars 160 Mission. Check List 20(5): 1096-1126. https://doi.org/10.15560/20.5.1096

Exploring arctic plants and lichens: An important conservation baseline for Nunavut’s newest and largest territorial park

A comprehensive study of the floristic diversity of Agguttinni Territorial Park has documented 141 vascular plant, 69 bryophyte, and 93 lichen species from this unique protected area.

Encompassing over 16 000 km2 of towering mountains, long fiords, lush valleys, and massive ice caps, Agguttinni Territorial Park is a protected area on northern Baffin Island, Nunavut, Canada. This park, and all of Nunavut, is Inuit Nunangat – Inuit homeland in Canada – and the park protects sites and biodiversity stewarded by Inuit since time immemorial.

Lapland Diapensia (Diapensia lapponica). Photo credit Lynn J. Gillespie © Canadian Museum of Nature

Agguttinni means “where the prevailing wind occurs” in the Inuktitut local dialect. The park includes important bird areas, key habitats for polar bears and caribou, and numerous important Inuit cultural sites. It is very remote: no roads lead to it, and access is only by helicopter, boat in the summer, or snowmobile in the winter.

A field camp in Atagulisaktalik, Agguttinni Territorial Park. Photo credit Paul Sokoloff © Canadian Museum of Nature

During the development of the park’s management plan, a team from the Canadian Museum of Nature, led by Dr. Lynn Gillespie, inventoried the park’s plants and lichens in partnership with Nunavut Parks and Special Places, with the support of Polar Knowledge Canada.

Over five weeks in the summer of 2021, Dr. Gillespie’s team traveled across Agguttinni, exploring the vicinity of four base camps in the park on foot and further afield by helicopter. Across this large area, they studied many different habitats from the interior Barnes Ice Cap to the coast of Baffin Bay.

Stewart Valley. Photo credit Lynn J. Gillespie © Canadian Museum of Nature

The heads of the long fiords, sheltered far inland, hosted the greatest plant diversity in the park, including numerous species rare on Baffin Island and two species previously only known from farther south in Canada: Lapland Diapensia (Diapensia lapponica) and Flame-tipped Lousewort (Pedicularis flammea). Conversely, the interior plateau near the ice cap was less diverse, but still held new records for Nunavut, such as Powdered Matchstick Lichen (Pilophorus caerulus), Starke’s Fork Moss (Kiaeria starkei) and Sprig Moss (Aongstroemia longipes).

Wooly lousewort (*Pedicularis lanata*). Photo credit Lynn J. Gillespie © Canadian Museum of Nature

This intensive fieldwork resulted in over a thousand new specimens deposited at the National Herbarium of Canada at the Canadian Museum of Nature and other herbaria worldwide. These pressed and preserved plants and lichens serve as proof that these species were found at this specific place and time and are the foundation for our knowledge of botanical diversity in the park.

Dr. Gillespie and her team also examined over 300 existing herbarium specimens from the park area, most of which were collected in 1950, the last time botanists intensively studied this part of Baffin Island. Combining data from these old and new specimens has resulted in an annotated checklist of the park’s plant and lichen diversity, describing the 141 vascular plant, 69 bryophyte, and 93 lichen species documented in Agguttinni, all native to the Arctic.

This checklist, immensely valuable to park managers and botanists, is filled with descriptions and photos useful to anyone interested in Arctic botany and is out now in the open-access, peer-reviewed journal Check List. With information on which species are present, where they are distributed, and which ones are rare, it will help the conservation and management of the protected area.

Research article:

Gillespie LJ, Sokoloff PC, Levin GA, Doubt J, McMullin RT (2024) Vascular plant, bryophyte, and lichen biodiversity of Agguttinni Territorial Park, Baffin Island, Nunavut, Canada: an annotated species checklist of a new Arctic protected area. Check List 20(2): 279-443. https://doi.org/10.15560/20.2.279

The Alps are home to more than 3,000 lichens

Historically, the Alps have always played an emblematic role, being one of the largest continuous natural areas in Europe. With its numerous habitats, the mountain system is easily one of the richest biodiversity hotspots in Europe.

Lichens are curious organisms comprising a stable symbiosis between a fungus and one or more photosynthetic organisms, for example green algae and/or cyanobacteria. Once the symbiosis is established, the new composite organism starts to function as a whole new one, which can now convert sunlight into essential nutrients and resist ultraviolet light at the same time.

A common fruticose lichen in the Alps (Flavocetraria nivalis). Photo: Dr Peter O. Bilovitz — *A common fruticose lichen in the Alps (Flavocetraria nivalis).*
*Photo: Dr Peter O. Bilovitz*

Being able to grow on a wide range of surfaces – from tree bark to soil and rock, lichens are extremely useful as biomonitors of air quality, forest health and climate change.

Nevertheless, while the Alps are one of the best studied parts of the world in terms of their biogeography, no overview of the Alpine lichens had been provided up until recently, when an international team of lichenologists, led by Prof. Pier Luigi Nimis, University of Trieste, Italy, concluded their 15-year study with a publication in the open access journal MycoKeys.

Sunrise in the Julian Alps. Photo: Dr Pier Luigi Nimis — *Sunrise in the Julian Alps.*
*Photo: Dr Pier Luigi Nimis*

The scientists’ joint efforts produced the first ever checklist to provide a complete critical catalogue of all lichens hitherto reported from the Alps. It comprises a total of 3,138 entries, based on data collected from eight countries – Austria, France, Germany, Italy, Liechtenstein, Monaco, Slovenia and Switzerland. In their research paper, the authors have also included notes on the lichens’ ecology and taxonomy.

A common lichen in the Alps (Xanthoria elegans). Photo: Dr Tomi Trilar — *A common lichen in the Alps (Xanthoria elegans).*
*Photo: Dr Tomi Trilar*

They point out that such catalogue has been missing for far too long, hampering research all over the world. The scientists point out that this has been “particularly annoying”, since the data from the Alps could have been extremely useful for comparisons between mountainous lichen populations from around the globe. It turns out that many lichens originally described from the Alps have been later identified in other parts of the world.

“It was a long and painstaking work, which lasted almost 15 years, revealing a surprisingly high number of yet to be resolved taxonomic problems that will hopefully trigger further research in the coming years,” say the authors.

“We think that the best criterion to judge whether a checklist has accomplished its task for the scientific community is the speed of it becoming outdated,” they conclude paradoxically.

The new checklist is expected to serve as a valuable tool for retrieving and accessing the enormous amount of information on the lichens of the Alps

A widespread alpine lichen (Thamnolia vermicularis). Photo: Dr Peter O. Bilovitz — *A widespread alpine lichen (Thamnolia vermicularis).*
*Photo: Dr Peter O. Bilovitz*

that has accumulated over centuries of research. It offers a basis for specimen revisions, critical re-appraisal of poorly-known species and further exploration of under-explored areas. Thus, it could become a catalyst for new, more intensive investigations and turn into a benchmark for comparisons between mountains systems worldwide.

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Original source:

Nimis PL, Hafellner J, Roux C, Clerc P, Mayrhofer H, Martellos S, Bilovitz PO (2018) The lichens of the Alps – an annotated checklist. MycoKeys 31: 1-634. https://doi.org/10.3897/mycokeys.31.23568

Lichenologists at work in the Carnic Alps. Photo: Dr Pier Luigi Nimis — *Lichenologists at work in the Carnic Alps.*
*Photo: Dr Pier Luigi Nimis*

Remarkably diverse flora in Utah, USA, trains scientists for future missions on Mars

Future Martian explorers might not need to leave the Earth to prepare themselves for life on the Red Planet. The Mars Society have built an analogue research site in Utah, USA, which simulates the conditions on our neighbouring planet.

Practicing the methods needed to collect biological samples while wearing spacesuits, a team of Canadian scientists have studied the diverse local flora. Along with the lessons that one day will serve the first to conquer Mars, the researchers present an annotated checklist of the fungi, algae, cyanobacteria, lichens, and vascular plants from the station in their publication in the open-access journal Biodiversity Data Journal.

Located in the desert approximately 9 km outside of Hanksville, Utah, and about 10 km away from the Burpee Dinosaur Quarry, a recently described bone bed from the Jurassic Morrison Formation, the Mars Desert Research Station (MDRS) was constructed in 2002. Since then, it has been continuously visited by a wide range of researchers, including astrobiologists, soil scientists, journalists, engineers, and geologists.

Astrobiology, the study of the evolution and distribution of life throughout the universe, including the Earth, is a field increasingly represented at the MDRS. There, astrobiologists can take advantage of the extreme environment surrounding the station and seek life as if they were on Mars. To simulate the extraterrestrial conditions, the crew members even wear specially designed spacesuits so that they can practice standard field work activities with restricted vision and movement.

In their present research, the authors have identified and recorded 38 vascular plant species from 14 families, 13 lichen species from seven families, 6 algae taxa including both chlorophytes and cyanobacteria, and one fungal genus from the station and surrounding area. Living in such extreme environments, organisms such as fungi, lichens, algae, and cyanobacteria are of particular interest to astrobiologists as model systems in the search for life on Mars.

However, the authors note that there is still field work to be executed at the site, especially during the spring and the summer so that the complete local diversity of the area can be captured.

“While our present checklist is not an exhaustive inventory of the MDRS site,” they explain, “it can serve as a first-line reference for identifying vascular plants and lichens at the MDRS, and serves as a starting point for future floristic and ecological work at the station.”

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Original source:

Sokoloff P, Hamilton P, Saarela J (2016) The “Martian” flora: new collections of vascular plants, lichens, fungi, algae, and cyanobacteria from the Mars Desert Research Station, Utah.Biodiversity Data Journal 4: e8176. doi: 10.3897/BDJ.4.e8176

From a bulletin to a modern open access journal: Italian Botanist in Pensoft’s portfolio

Established in the distant 1888, the Italian Botanical Society has gone a long way towards publishing its achievements and research. Originated as a bulletin within an Italian journal, they have been growing ever since to now form a new international journal in its own right. Covering both Italian and international research in botany and mycology, the online open access journal Italian Botanist, published by Pensoft, is now officially launched via its first papers.

Although what was later to become Italian Botanist, published its first issue as an independent journal, called Informatore Botanico Italiano in 1969, the publications were still rather bulletin-style. It consisted of a mixture of administrative and scientific proceedings of the Society, the yearbook of the members, as well as scientific notes.

Nevertheless, such a major transition has been set to change everything fundamentally. Establishing its name, the journal started picking up, so that it was not long before the scientific contributions were prevailing. Impressively, for the Society’s centenary the journal published a celebratory 331-page contribution.

Gradually, its scope was expanded to cover several scientific fields. It hosted several themed columns, including cytotaxonomic contributions on the Italian flora, relevant new floristic records for Italy, conservational issues concerning the Italian flora and mycology.

However, the Directive Council of the Italian Botanical Society has not seemed to be ready to give up on their journal’s evolution. Last year, the botanists decided that they need to transform the journal to an an online, open access journal written in English and called Italian Botanist, in order to boost the scientific value and international visibility of Informatore Botanico Italiano.

Under the name Italian Botanist, the journal has now joined Pensoft’s portfolio of peer-reviewed open access journals, all of which take advantage of the advanced technologies and innovations developed by the publisher.

The new journal’s scope ranges from molecular to ecosystem botany and mycology. The geographical coverage of Italian Botanist is specially focused on the Italian territory, but studies from other areas are also welcome.

Staying faithful to its spirit and philosophy, it keeps its column-format, with each issue to contain five columns, namely Chromosome numbers for the Italian flora, Global and Regional IUCN Red List Assessments, Notulae to the Italian flora of algae, briophytes, fungi and lichens, Notulae to the Italian native vascular flora and Notulae to the Italian alien vascular flora.

“Our hope is that this renewed version of the journal will serve the Italian – and foreign – botanical community more efficiently and provide readers worldwide with an easier access to knowledge concerning the Italian flora,” says Italian Botanist‘s Editor-in-Chief Lorenzo Peruzzi.

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Original source:

Peruzzi L, Siniscalco C (2016) From Bullettino della Società Botanica Italiana to Italian Botanist, passing through Informatore Botanico Italiano. A 128 years-long story. Italian Botanist 1: 1-4. doi: 10.3897/italianbotanist.1.8646