Tuesday, December 20, 2022

Academy scientists describe 146 new species in 2022

From the rock-strewn peaks of eastern Brazil to the ‘twilight zone’ coral reefs of the Maldives, these new discoveries grow Earth’s tree of life

Peer-Reviewed Publication

CALIFORNIA ACADEMY OF SCIENCES

Rose-veiled fairy wrasse 

IMAGE: A ROSE-VEILED FAIRY WRASSE PHOTOGRAPHED OFF THE COAST OF THE MALDIVES DURING A RECENT HOPE FOR REEFS RESEARCH EXPEDITION. view more 

CREDIT: (LUIZ ROCHA © CALIFORNIA ACADEMY OF SCIENCES)

SAN FRANCISCO, CA (December 20, 2022) — In 2022, researchers at the California Academy of Sciences added 146 new animal, plant, and fungi species to the tree of life, enriching our understanding of Earth’s biodiversity and strengthening our ability to regenerate the natural world. The new species include 44 lizards, 30 ants, 14 sea slugs, 14 flowering plants, 13 sea stars, seven fishes, four beetles, four sharks, three moths, three worms, two scorpions, two spiders, two lichens, one toad, one clam, one aphid, and one sea biscuit. More than a dozen Academy scientists—along with several dozen international collaborators—described the new-to-science species.

Proving that our vast and dynamic planet still harbors unexplored places with never-before-recorded plants and animals, the scientists made their finds across six continents and three oceans, from isolated mountain peaks to hundreds of feet beneath the ocean’s surface. Their efforts help advance the Academy’s mission to regenerate the natural world through science, learning, and collaboration.

“New species research is critical for understanding the diversity of life on Earth and identifying ecosystems most in need of protection,” says Academy virologist and Chief of Science Shannon Bennett, PhD. “As we’ve seen over the last two weeks at the United Nations Biodiversity Conference (COP15), biodiversity science is at the forefront of global conservation action and is key in unifying nations and equipping them with the tools and information necessary to reverse species extinction rates by 2030. By uncovering and documenting new species, we can contribute to this landmark goal and ensure that our natural world remains rich and diverse for generations to come.”

Below are highlights from the 146 species described by the Academy this past year. For a full list of species and hi-res images, please contact press@calacademy.org.

Radiating geckos
Academy Research Associate Aaron Bauer, PhD, added 28 geckos to the genus Bavayia, more than doubling the number of known species within the genus from 13 to 41. Bavayia is a group of small forest geckos from the mountains of New Caledonia, with species characterized by fairly neutral brown and white markings. “Though all species within the genus physically look quite similar, we discovered they are in fact genetically distinct,” Bauer says. Unlike many related island species, which tend to physically diverge from one another as they adapt to various habitats and resources, Bavayia underwent an evolutionary process called nonadaptive radiation, in which species diversify genetically but maintain similar physical traits. “Nearly every mountain in New Caledonia hosts a unique Bavayia species, and these habitats share many of the same conditions,” Bauer explains. “The result is several species that are often almost indistinguishable from one another.”

Although New Caledonia is not a focus of the Academy’s Islands 2030 initiative to halt biodiversity loss and habitat degradation on five key tropical archipelagos, this research serves as an example of the importance of protecting island ecosystems. 

California's Minnesota Mountain onion
Academy Research Associate Julie Kierstead stumbled upon the newly described Minnesota Mountain onion on a helicopter trip through California’s Klamath Mountains in the spring of 2015. “The pilot decided to put us down on Minnesota Mountain for a half hour or so,” Kierstead recalls. “It was really in the middle of nowhere.” When she stepped out onto the seemingly uninteresting summit of loose rock and small shrubs, she noticed an unfamiliar species of allium—the group of flowering plants including onions, garlic, and shallots—in bloom. After four years of searching the Klamath range for a second population, Kierstead’s research partner discovered a small patch of the unidentified species on the summit of nearby Salt Creek Mountain. 

“As far as we know, the Minnesota Mountain onion can only be found on these two neighboring peaks,” Kierstead says. “It clearly favors this specific habitat.” 

Both peaks are located within a microclimate with higher rainfall than that of the surrounding region—which is increasingly plagued by wildfires—allowing certain species such as this onion to thrive. But because it lives in such a restricted habitat, any change in its environment, from a severe weather event to a disease outbreak, could drive the new-to-science species to extinction. 

Sea slugs great and small 
It was a milestone year for Academy Curator of Invertebrate Zoology Terry Gosliner, PhD, who celebrated 40 years with the Academy’s Institute for Biodiversity Science and Sustainability and discovered 14 new-to-science sea slugs from the Indo-Pacific region. Gosliner has described about a quarter of all sea slugs known to science, and lately he's focused on smaller, harder-to-find species. At one and a half centimeters in length, Goniobranchus fabulus—whose name translates to “small bean”—is the largest species in this year’s set of sea slugs. Other species, like the diminutive Murphydoris adusta, are as tiny as 2 millimeters long (about the width of a strand of spaghetti). Gosliner and his team conducted their research with the Center for Comparative Genomics (CCG), the Academy’s in-house lab for genomics and DNA sequencing. For Gosliner, the CCG is not only a dynamic workspace for trying new techniques, but a collaborative training space to host researchers and students from around the world: “It takes a global community to build an understanding of biodiversity.”

Academy researcher Lynn Bonomo agrees, attributing much of their success to the community of sea slug enthusiasts on the community science platform iNaturalist. “Users are uploading observations in real time, which gives us a snapshot of current species ranges,” Bonomo says. “It’s a powerful tool for tracking changes and monitoring the health of coral reefs and other marine ecosystems.”

Flowers from the Campo Rupestre
This year, Emeritus Curator of Botany Frank Almeda, PhD, and Academy Research Associate Ricardo Pacifico described several new species of flowering plants from the ragged peaks of Brazil’s Campo Rupestre. Known for extreme temperatures, strong winds, and nutrient-deficient soils, this mountainous ecoregion of shrublands and rocky outcrops is a seemingly barren landscape. But it is because of these harsh conditions that scientists continue to make new species discoveries. Such strong ecological pressures have prompted life to adapt to this severe environment in unique ways, resulting in a wealth of plant life found nowhere else on Earth. Pacifico came across Microlicia prostrata, a yellow-blossomed shrub, on a remote peak that had never been surveyed by botanists before. “The shrubs on the summit were less than half a meter high,” says Pacifico, who conducted the surveys through the Academy’s Lakeside Fellowship, which supports scientific researchers from developing countries. “It was like walking through a garden.”

Like many of the plants Almeda and Pacifico described this year, M. prostrata can only survive on the specific mountaintop where it was found. As global temperatures continue to increase, populations of plants—particularly those that have adapted to narrow temperature ranges—are forced to migrate to cooler regions at higher elevations. But for peak-loving plants like M. prostrata, there’s nowhere left to move. 

Vamos a la playa scorpions 
Bay Area high school students Harper Forbes and Prakrit Jain discovered two new-to-science scorpions with the help of Academy Curator of Arachnology Lauren Esposito, PhD. The budding scientists first noticed the unidentified species iNaturalist, and soon went into the field to find, collect, and eventually describe them. Paruroctonus soda and Paruroctonus conclusus are small, desert-dwelling scorpions from the dry, salty lake beds of Central and Southern California. While P. soda inhabits federally protected land, P. conclusus can only be found on a narrow strip of unprotected land—about a mile long and only a few feet wide in some places—making the entire species highly vulnerable to human-driven threats. “The entire species could be wiped out with the construction of a single solar farm, mine, or housing development,” Forbes says. “Mapping the biodiversity of a given area can help build the case for why that land should be protected.”

For scientists, conservation managers, and the growing communities of wildlife observers on platforms like iNaturalist, these newly described species provide a better understanding of California’s biodiversity and the places most in need of protection—a cornerstone of the Academy’s Thriving California initiative.

First, but not last, Maldivian-described wrasse
From the dazzling yellowtail damselfish to a deep sea grenadier, Academy researchers described seven species of fish this year. In partnership with the Maldives Marine Research Institute (MMRI) and the University of Sydney as part of the Academy’s Hope for Reefs initiative, Academy Curator of Ichthyology Luiz Rocha, PhD, introduces the rose-veiled fairy wrasse—one of the first species to be named in the local Dhivehi language (“finifenmaa” meaning “rose”, a nod to both its pink hues and the island nation’s national flower). The fairy wrasse is also the first-ever species to be formally described by a Maldivian researcher. 

“It has always been foreign scientists who have described species found in the Maldives without much involvement from local scientists, even those that are endemic to the Maldives,” said study co-author and MMRI biologist Ahmed Najeeb in a statement earlier this year. “This time it is different and getting to be part of something for the first time has been really exciting, especially having the opportunity to work alongside top ichthyologists on such an elegant and beautiful species.”

Media Contact: 
Megan Ely, mely@calacademy.org
Interviews with researchers available upon request.

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About the California Academy of Sciences
The California Academy of Sciences is a renowned scientific and educational institution with a mission to regenerate the natural world through science, learning, and collaboration. Based in San Francisco’s Golden Gate Park, it is home to a world-class aquarium, planetarium, and natural history museum, as well as innovative programs in scientific research and environmental education—all under one living roof. Museum hours are 9:30 am – 5:00 pm Monday – Saturday, and 11:00 am – 5:00 pm on Sunday. Admission includes all exhibits, programs, and shows. For daily ticket prices, please visit www.calacademy.org or call (415) 379-8000 for more information.

About Research at the California Academy of Sciences
The Institute for Biodiversity Science and Sustainability at the California Academy of Sciences is at the forefront of efforts to regenerate the natural world through science, learning, and collaboration. Based in San Francisco, the Institute is home to more than 100 world-class scientists, state-of-the-art facilities, and nearly 46 million scientific specimens from around the world. The Institute also leverages the expertise and efforts of more than 100 international Associates and 450 distinguished Fellows. Through expeditions around the globe, investigations in the lab, and analysis of vast biological datasets, the Institute’s scientists work to understand the evolution and interconnectedness of organisms and ecosystems, the threats they face around the world, and the most effective strategies for ensuring they thrive into the future. Through deeply collaborative partnerships and innovative public engagement initiatives, they also guide critical conservation decisions worldwide, inspire and mentor the next generation of scientists, and foster responsible stewardship of our planet.

Human activities degrade hippopotamus homes at Bui National Park, Ghana

Peer-Reviewed Publication

PENSOFT PUBLISHERS

Farmers clearing trees along the rivers to begin cultivation at Bui National Park. 

IMAGE: FARMERS CLEARING TREES ALONG THE RIVERS TO BEGIN CULTIVATION AT BUI NATIONAL PARK. view more 

CREDIT: BEMPAH ET AL.

The Bui National Park is one of the few areas where the common hippopotamus resides in Ghana. The combined resources of the Black Volta River and the abundance of grasses make the area very suitable for hippopotamus. However, in an attempt to solve the electricity crisis the country faced in 2007, the government of Ghana constructed a hydroelectric dam in the heart of their home.

Knowing the consequence of dam creation on aquatic species, scientists Godfred Bempah, Martin Kobby Grant, Changhu Lu, and Amaël Borzée from Nanjing Forestry University, China, wanted to understand how the hippopotamus, a mega semi-aquatic species, was impacted by this project. The results have been published in the journal Nature Conservation. Assessing the impact of the dam construction can advise policy and decision making in future projects like this.

The researchers spent 24 days (2 days per month for 12 months) at the Bui National Park to estimate the number of hippopotamus individuals and understand local migratory activities, as well as to assess changes in land cover in the area after the dam was constructed. They then compared this information with historical data to understand the ecological changes within the area.

To complement the field surveys, the researchers spoke to local people familiar with the reserve before and after the dam construction. These included fishermen, canoe operators and park rangers. During the interactive discussion, all of them stated that the numbers of hippopotamus have declined compared to periods before the dam construction. They attributed the decline to poaching and habitat destruction.

The results indicated a decline in hippo numbers of about 70%: from 209 individuals in 2003 to 64 individuals in 2021.

The study revealed noticeable changes in land cover after the dam construction, and, most importantly, a decline in forest cover, as well as destruction of riparian grasses, the habitat preferred by the hippopotamus. The increase in water levels flooded the areas where the animals used to reside, forcing them to disperse to other suitable areas. As they dispersed, the animals became vulnerable to poaching, which combined with habitat loss eventually led to a decline in hippopotamus numbers. It is possible that some of the animals might have successfully moved to other areas outside the reserve.

The hippopotamus is listed as Vulnerable to extinction by the IUCN Red List of Threatened Species.

In conclusion, the authors note that the number of common hippopotamus individuals in the park has declined following the dam construction, in connection with habitat destruction and poaching. Once these threats are removed, the hippopotamus can survive in the medium to long term, when effective management plans are implemented.

 

Original source:
 

Bempah G, Kobby Grant M, Lu C, Borzée A (2022) The direct and indirect effects of damming on the Hippopotamus amphibius population abundance and distribution at Bui National Park, Ghana. Nature Conservation 50: 175-201. https://doi.org/10.3897/natureconservation.50.87411


Strong metaphorical messages can help tackle toxic e-waste

Consumers told that not recycling their batteries ‘risked polluting the equivalent of 140 Olympic swimming pools every year’ were more likely to participate in an electronic waste recycling scheme, a new study has found

Peer-Reviewed Publication

UNIVERSITY OF PORTSMOUTH

Consumers told that not recycling their batteries ‘risked polluting the equivalent of 140 Olympic swimming pools every year’ were more likely to participate in an electronic waste recycling scheme, a new study has found.

The paper from the University of Portsmouth explores how to improve our sustainable disposal of electronic waste (e-waste).

With Christmas around the corner and consumers buying the latest mobile phones, tablets, headphones and televisions, older electronic products become defunct and add to the alarming quantity of potentially toxic e-waste.

Experts at the University of Portsmouth carried out research to test what factors encourage consumers to safely dispose of e-waste, which will be useful for managers and policy-makers implementing disposal schemes.

Lead author of the study, Dr Diletta Acuti, from the University’s Faculty of Business and Law, said: “The world’s electronic waste is an enormous problem which needs to be addressed urgently. E-waste often contains hazardous substances, such as mercury, lead or acid, which ends up in landfills without any treatment or special precautions, causing significant long-term damage to the environment and human health.

“Adequate treatment of this waste is therefore an environmental necessity.”

In 2019, 205,000 tons of portable batteries were sold in Europe, but only half were collected for recycling. Dr Acuti’s research looks specifically at the disposal of batteries.

The researchers conducted a field experiment in Northern Italy, which analysed how the proximity of bins and the language used to encourage recycling affected 100 people's efforts to dispose of their e-waste.

She said: “We’re buying more and more technology causing mountains of e-waste and the problem is only going to get worse, but proper disposal of this waste can only be achieved if consumers actively participate in recycling.

“Our research looks at what factors are effective to try and encourage people to recycle their e-waste, which we hope will be useful for implementing successful disposal schemes.”

A number of bins were installed to collect old batteries and letters were sent to inform people about the new scheme.

Some of the letters included metaphorical language to see if this would encourage recycling efforts and other letters included numerical information. The researchers found that the metaphorical language had a more powerful influence on consumers’ actions.

“Those who were told to consider the fact that a battery contains approximately one gram of mercury, an amount that can pollute a quantity of water equivalent to seven bathtubs and that we risk polluting the equivalent of 140 Olympic swimming pools every year, were more likely to recycle their batteries,” explained Dr Acuti.

“Metaphors elicit visual representation of an object - that is too large or too distant from the individual's lived reality, like large quantities of water - in the consumer's mind, which makes an abstract object more concrete and easier to understand.

“By strategically placing the bins and making the information about the disposal scheme easy to understand, we can actually change the behaviour of consumers and use marketing for a better world.”

The paper is published in Technological Forecasting and Social Change.

Loon stratospheric balloons confirm wind data from Aeolus

Researchers recommend more vertical measurements for follow-up mission

Peer-Reviewed Publication

LEIBNIZ INSTITUTE FOR TROPOSPHERIC RESEARCH (TROPOS)

AEOLUS - profiling winds 

IMAGE: ESA'S AEOLUS WIND MISSION PROVIDES TIMELY AND ACCURATE PROFILES OF THE WORLD'S WINDS, AS WELL AS OTHER INFORMATION ABOUT AEROSOLS AND CLOUDS. view more 

CREDIT: ESA/ATG MEDIALAB HTTPS://WWW.ESA.INT/ESA_MULTIMEDIA/IMAGES/2014/03/UNDERSTANDING_EARTH_S_WINDS FOR USE IN THE MEDIA FOR EDUCATIONAL AND INFORMATIONAL PURPOSES ONLY - SEE ESA'S POLICY ON THE USE OF IMAGES HERE: HTTPS://WWW.ESA.INT/ESA_MULTIMEDIA/COPYRIGHT_NOTICE_IMAGES

Leipzig. ESA's novel Aeolus satellite reliably measures wind speed also in higher air layers and thus in a region of the atmosphere where other direct global wind measurements are relatively sparse. This is the result of a study for which data from the satellite were compared with wind observations from stratospheric balloons. Stratospheric balloons would provide highly accurate data on the horizontal wind speed and are therefore also suitable for the validation of future satellite missions. Future wind satellites should increase the vertical resolution to better resolve gravity waves in the tropics, writes the team of researchers from the Leibniz Institute for Tropospheric Research (TROPOS), the European Space Agency (ESA), the European Centre for Medium-Range Weather Forecasts (ECMWF), the University of Hamburg and the Google company Loon. The study has now been published in the Quarterly Journal of the Royal Meteorological Society.

 

 

The quality of numerical weather prediction models and thus of weather forecasts depends heavily on the available data. In recent decades, a global observation system has therefore been built up which also includes wind profiles from weather balloons, aircraft data or wind profiler radar systems. However, most of this data comes from the densely populated northern hemisphere. In the southern hemisphere, over the oceans and especially in the tropics, the network of direct measurements is still relatively sparse.

 

The launch of the European Space Agency's (ESA) first wind satellite Aeolus on 22 August 2018 was therefore a major step towards global wind measurements. This novel satellite has a powerful laser on board, the Atmospheric Laser Doppler Instrument (ALADIN). ALADIN is the first Doppler wind lidar in space to provide profiles of horizontal wind speed from the Earth's surface or from the top of thick clouds up to a height of about 30 km on a global scale. To do this, the satellite emits short ultraviolet laser pulses as it orbits the Earth. A small part of these light pulses is scattered back to the satellite by air molecules, aerosols and clouds and collected and processed in the detector there. For one circumnavigation of the globe Aeolus takes 90 minutes, within a week the satellite collects wind data around the entire globe. This data is assimilated by weather forecasting centres around the world to improve their forecasts. Since there have been no comparable satellite missions so far, the data are checked particularly critically and compared with other wind measurements.

 

A study recently published used data from 229 stratospheric balloons of the Loon project between July 2019 and December 2020 from tropical Latin America, Atlantic Ocean, Africa and Indian Ocean for comparison. Loon was a commercial project that had provided remote regions with internet access via helium balloons in the stratosphere. The balloons, which were about 12 metres in diameter, acted as floating mobile phone stations at altitudes of 16 to 20 kilometres above the ground. For maintaining the network, the balloons had to automatically correct the wind direction by changing the altitude. This created an extensive data set on wind speeds in these atmospheric layers, which partially fills the gap in wind data at this altitude in the global observation system. The Loon project was discontinued in 2021 for economic reasons, but a highly interesting data set remains for atmospheric research.

 

"Our analysis confirms that the Aeolus satellite provides almost bias-free wind measurements in the upper troposphere and lower stratosphere. In contrast, the current ECWMF weather model systematically underestimates the wind speed there by about 1 metre per second, which could be demonstrated by the Aeolus and Loon data. These results are important to better understand dynamical processes in the upper troposphere and lower stratosphere and to further improve the weather models," emphasises Dr. Sebastian Bley from TROPOS, who worked for the study at ESA in Frascati, Italy. Another recommendation of the researchers is to carry out more vertical measurements to be able to provide more wind information in the atmospheric layers. This could further improve the accuracy of upcoming wind satellites. In addition to wind speed, Aeolus also provides information about aerosols and clouds, but only via a portion of the backscattered light. "We hope that future wind missions will also be able to measure depolarisation, the rotation of light when it is reflected. That would be a milestone because the satellite could then also provide more information about aerosols," explains Bley.

 

Aeolus was developed as an explorer mission with an expected lifetime of 3 years to demonstrate the technology of a Doppler wind lidar in space. However, expectations have been exceeded and Aeolus has now been providing valuable data for over 4 years. The wind data are now used in the weather forecasts of several weather services throughout Europe, such as the German Weather Service (DWD), and have been convincing due to their positive influence on the quality of weather forecasts. The way forward for the follow-on mission Aeolus-2 has been recently decided in the ESA ministerial and will be jointly developed by ESA and EUMETSAT.

 

In September, researchers from the USA had integrated Aeolus data into the hurricane model (HWRF) of the US weather and oceanography agency NOAA on a trial basis in order to better predict tropical storms. Their conclusion is that the use of Aeolus wind data is most effective where there are no reconnaissance flights into the hurricanes and could therefore have the greatest positive impact on tropical cyclone forecasting in the Pacific and Indian Oceans.

With these two new studies from the tropics, the chances are increasing that Aeolus data will also be used outside Europe and that a follow-up mission could improve weather forecasts. Tilo Arnhold

  

A study now published used data from 229 Loon Project stratospheric balloons between July 2019 and December 2020 from tropical Latin America, Atlantic Ocean, Africa and Indian Ocean for comparison.

CREDIT

Sebastian Bley, TROPOS / QJRMS (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

 

Loon_-_Launch_Event-(CC-BY-2.0 (IMAGE)

LEIBNIZ INSTITUTE FOR TROPOSPHERIC RESEARCH (TROPOS)

Further information and lin 

ESA-Aeolus:

https://www.esa.int/Applications/Observing_the_Earth/FutureEO/Aeolus

 

ESA’s wind mission could help to forecast tropical storms (27 Oct 2022):

https://earth.esa.int/eogateway/news/esa-s-wind-mission-could-help-to-forecast-tropical-storms

 

Aeolus DISC (Data, Innovation, and Science Cluster)

https://earth.esa.int/eogateway/activities/aeolus-disc

 

EVAA - Experimentelle Validierung und Assimilation von Aeolus Beobachtungen

https://www.meteo.physik.uni-muenchen.de/evaa/doku.php?id=en:start

 

Large measurement campaign in the Atlantic starts (Press release, 30 Jun 2021)

https://www.tropos.de/en/current-issues/press-releases/details/grosse-messkampagne-im-atlantik-laeuft-an

 

Californian smoke drifted as far as Central Europe in autumn 2020 and caused heavy clouding of the sun (Press release, 01 Jun 2021)

https://www.tropos.de/en/current-issues/press-releases/details/kalifornischer-rauch-zog-im-herbst-2020-bis-nach-mitteleuropa-und-sorgte-fuer-starke-truebung-der-sonne

 

ADM Aeolus – Measuring the wind from space with a laser for the first time (Press release, 21 Aug 2018)

https://www.tropos.de/en/current-issues/press-releases/details/adm-aeolus-measuring-the-wind-from-space-with-a-laser-for-the-first-time

 

 

 

 

Dresden researchers explore improved applications for carbon fibers in concrete

Major review article published in prestigious journal

Peer-Reviewed Publication

TECHNISCHE UNIVERSITÄT DRESDEN

Carbon Fibers 

IMAGE: CARBON FIBERS view more 

CREDIT: TUD/MARCO LIEBSCHER

The Institute of Construction Materials and the Institute of Structural Analysis at TU Dresden have collaborated with Shanghai Jiao Tong University in China to research which methods could be used to achieve even more stable composites. These include both technological and physico-chemical approaches that can provide improved fiber-matrix interaction at different temperatures. Both textile-technological approaches, such as suitable coating or impregnation materials, and physico-chemical methods using plasma treatments or electrochemical deposition were identified as particularly promising.

In a major review article published in the renowned Progress in Materials Science, a journal with an exceptionally high impact factor, the researchers from TU Dresden and Shanghai Jiao Tong University have now been able to present to a large specialist audience a comparative analysis of the various modification methods that are intended to enable improved load transfer between carbon fibers and cement-based matrices.

The article in the internationally highly respected journal Progress in Materials Science is a phenomenal success for the Dresden-based researchers. The publication in the journal is an indication that the issue of improved fiber composite in cement-based matrices, previously relevant mainly in research by civil engineers, has been brought to a fundamental level that has now gained importance for a much wider professional community.

Progress in Materials Science: "A review of carbon fiber surface modification methods for tailor-made bond behavior with cementitious matrices”: https://www.sciencedirect.com/science/article/abs/pii/S0079642522001219