New Crocodile Fossil Discovery in Ethiopia: Coexistence with Australopithecus afarensis Revealed

Paleontologists examining fossils in Ethiopia have discovered a new species of crocodile, named Crocodylus lucivenator, that coexisted with the renowned hominid Australopithecus afarensis. This formidable predator likely thrived in the wetlands and forest watering holes during the Pliocene epoch, posing a significant threat to early hominins.



Crocodylus lucivenator cohabited with Lucy and her early ancestors, potentially preying on them. Image credit: Tyler Stone, University of Iowa.

Crocodylus lucivenator thrived between 3.4 and 3 million years ago, overlapping in time and place with the famous hominin Australopithecus afarensis.

This species measured approximately 3.7 to 4.6 meters (12 to 15 feet) in length and weighed between 270 and 590 kilograms (600 to 1,300 pounds).

As an ambush predator, it would remain camouflaged underwater, ready to strike at unsuspecting drinkers.

“It was the dominant predator in that ecosystem, surpassing lions and hyenas, representing the biggest threat to our ancestors,” stated Professor Christopher Brochu from the University of Iowa.

“It is highly likely that Crocodylus lucivenator preyed on Lucy’s kind.”

“The combination of anatomical features in Crocodylus lucivenator was quite extraordinary and surprising,” he added.

The species was identified from 121 specimens, primarily skulls, teeth, and jaw fragments, obtained from the Hadar Formation in Ethiopia’s Afar region.

One notable fossilized jaw exhibits signs of damage indicating potential combat with another crocodile.

“This specimen displayed several partially healed injuries, suggesting it likely engaged in a fight with another crocodile,” explained Dr. Stephanie Drumheller, a paleontologist at the University of Tennessee.

“Such face-biting behavior is a common trait in crocodilian species, with similar scars appearing in the fossil record of extinct groups.”

While it’s unclear which combatant emerged victorious, the healing suggests survival post-battle, regardless of the outcome.

Crocodylus lucivenator exhibits a unique blend of anatomical traits found across several extinct African crocodile species.

This crocodile shares features with two known Pleistocene species while also retaining more primitive characteristics.

Additionally, researchers found a distinctive ridge along the snout resembling traits in modern Neotropical crocodiles and late Miocene species from Libya and Kenya.

Similar fossilized features at the Pliocene Kanapoi site in Kenya had been previously misclassified under a different species.

New investigations reveal that these fossils closely relate to Crocodylus lucivenator and several other extinct East African crocodiles.

Phylogenetic analysis indicates that this ancient crocodilian population represents a distinct lineage.

Fossil evidence confirms that Crocodylus lucivenator was the sole crocodile inhabiting the Pliocene Hadar Formation.

In contrast, contemporary deposits in the Turkana Basin suggest four different crocodile species coexisted at that time, although the reason for this disparity remains unknown.

“During the Pliocene, Hadar featured diverse habitats, such as woodlands, wet grasslands, and river systems,” remarked Dr. Christopher Campisano, a paleontologist at Arizona State University.

“Remarkably, this crocodile was one of the few species successful in adapting.”

This discovery is detailed in the article: Journal of Systematic Paleontology.

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Christopher A. Brochu et al. Lucy’s Danger: A Pliocene crocodile from the Hadar Formation of northeastern Ethiopia. Journal of Systematic Paleontology published online on March 11, 2026. doi: 10.1080/14772019.2026.2614954

Source: www.sci.news

Two Australopithecus Species Coexisted in Ethiopia 3.4 Million Years Ago

In 2009, paleoanthropologists uncovered eight foot bones from ancient human ancestors in 3.4 million-year-old deposits at the Wolanso Mir site in Ethiopia’s Afar Rift Valley. A new study reveals that this fossil, known as Brutele’s foot, belongs to Australopithecus deiremeda. This finding adds to the evidence that two hominin species, Australopithecus deiremeda and Australopithecus afarensis, coexisted in the same region at the same time.

Australopithecus deiremeda and Australopithecus afarensis. Image credit: Gemini AI.

“When we found this foot in 2009 and announced it in 2012, we recognized it was distinct from Lucy’s species, although Australopithecus afarensis has received significant attention since then,” stated Professor Johannes Haile Selassie from Arizona State University.

“Typically, naming a species based on postcranial elements is uncommon in our field, so we anticipated finding something distinctly linked to the feet from the neck up.

“Traditionally, the skull, jaw, and teeth are the primary markers for species identification.”

“When Bartele’s foot was first reported, some teeth had already been found in the same area, but we weren’t certain they were from the same deposit level.”

“Then in 2015, scientists classified a new species, Australopithecus deiremeda, from the same region, but the foot was not included, despite other specimens being unearthed nearby.”

“Over the last decade, our repeated fieldwork has yielded more fossils, allowing us to confidently link Brutele’s foot to the species Australopithecus deiremeda.”

Australopithecus deiremeda exhibits more primitive foot structures compared to Lucy’s species, Australopithecus afarensis.

While retaining an opposable thumb useful for climbing, it is believed that Australopithecus deiremeda likely walked on two legs, with an emphasis on their second toes rather than their big toes, as is the case with modern humans.

“The presence of an opposable big toe in Ardipithecus ramidus was a surprising and unexpected finding, highlighting that 4.4 million years ago, early human ancestors still possessed opposable big toes,” remarked Professor Haile Selassie.

“Then, a million years later, the discovery of Brutele’s foot further amazed us.”

“Currently, we’re in an era where we can observe subsequent species. Members of Australopithecus afarensis had an adducted big toe and displayed complete bipedalism.”

“This indicates that bipedalism, or walking on two legs, manifested in diverse forms among these early human ancestors.”

“The discovery of specimens like Bartele’s foot conveys that there were multiple ways to walk bipedally. It wasn’t until later that a single method emerged.”

To gain insights into their dietary practices, researchers sampled eight of the 25 teeth found in the area related to Australopithecus deiremeda for isotope analysis.

This process involved cleaning the tooth to ensure only the enamel was analyzed.

“I extracted the tooth using a dental drill with a very small bit, similar to what dentists use,” explained Naomi Levin, a professor at the University of Michigan.

“Using this drill, we meticulously remove a small amount of powder, which we store in a vial and return to the lab for isotope analysis.”

“The results were intriguing: Lucy’s species displayed a mixed diet, consuming both C3 (from trees and shrubs) and C4 (tropical grasses and sedges) plants; while Australopithecus deiremeda primarily utilized resources from the C3 category.”

“We were taken aback by how distinctly clear the carbon isotope signal was, mirroring ancient hominin data from Australopithecus ramidus and Australopithecus anamensis.

“I considered the dietary differences between Australopithecus deiremeda and Australopithecus afarensis. Although identifying them was challenging, the isotopic data distinctly indicated that Australopithecus deiremeda was not exploiting the same range of resources as Australopithecus afarensis, known as the earliest hominin to consume C4 grass-based resources.”

Another significant analysis involved accurately dating the fossils and understanding the ancient environments inhabited by these early humans.

“We conducted extensive field research at Wolanso Mir to analyze how different fossil layers interrelate, which is essential for grasping when and in what environments different species thrived,” noted Professor Beverly Thaler from Case Western Reserve University.

In addition to the 25 teeth found at Bartele, researchers also recovered the jaw of a four-and-a-half-year-old child, displaying dental anatomy similar to that of a juvenile Australopithecus deiremeda.

Professor Gary Schwartz from Arizona State University commented: “In juvenile hominins of this age, we observed evident growth discontinuity between front teeth (incisors) and back chewing teeth (molars), akin to patterns in modern apes and early australopiths like Lucy.”

“The most surprising aspect was that, despite gaining a better understanding of the diversity within early australopith (and thus early hominid) species regarding size, diet, locomotion, and anatomy, these early forms appeared surprisingly uniform in growth patterns.”

Findings have been detailed in a paper published in this week’s edition of Nature.

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Y. Haile Selassie et al. New discovery illuminates the diet and lifestyle of Australopithecus deiremeda. Nature published online November 26, 2025. doi: 10.1038/s41586-025-09714-4

Source: www.sci.news

Early Homo and Australian Ropithecus Lived Together in Ethiopia 2.5 Million Years Ago

Recently discovered human fossils from the Ledi-Geraru Research Project in a remote region of Ethiopia indicate an early presence of Homo around 2.78 million years ago and a previously unidentified species, Australian, dating back 2.63 million years.

Forensic facial reconstruction of Australopithecus afarensis. Image credit: Cicero Moraes/CC by-sa 3.0.

The timeline from approximately 3 to 2 million years ago represents crucial phases in human evolution.

This encompasses the genus Homo and Paran Solo Pass, which first appeared in fossil records alongside the ancestors of Australopithecus afarensis, a species that eventually vanished.

“We typically viewed human evolution as a linear trajectory from ape-like ancestors to modern humans. However, Homo sapiens researcher Brian Villmoare from the University of Nevada, Las Vegas, states that our understanding must adapt.”

“Humans have diversified into various niches multiple times throughout our history.”

“Our evolutionary tree reflects patterns not unique to us. Similar events occurred across different life forms.”

“This is something we should observe more frequently in the record of human fossils.”

“Nature has explored numerous paths toward humanity, particularly as climates became drier in East Africa, leading to the extinction of more ape-like species.”

Dr. Villmoare and his co-authors uncovered 13 human teeth at the Ledi-Geraru site in Ethiopia.

They determined that while some fossils belong to the genus Homo, others include upper and lower teeth sets from an unnamed species, Australian.

This new species differs from Australopithecus afarensis, which was first identified nearby at Khadar around 2.95 million years ago.

“The coexistence of both species in the same area suggests that human evolution resembles a branching tree rather than a linear progression,” said Dr. Villmoare.

The Ledi-Geraru site is also where paleontologists discovered the earliest jaw of Homo in 2013, dating back 2.8 million years.

“Recent findings of Homo teeth from sediments aged between 2 and 2.8 million years confirm the timeline of our lineage,” stated Dr. Villmoare.

“We know what the earliest teeth and jaws of Homo look like, but our findings extend beyond that.”

“This underscores the critical need for additional fossil discoveries to differentiate between Australian and Homo, and to explore potential overlaps in their fossil records.”

“There has been considerable geological activity in this region,” noted Dr. Christopher Campizzano, a geologist at Arizona State University.

“Numerous volcanic eruptions released ashes containing feldspar crystals, allowing scientists to date them.”

“We can date the eruptions that occurred in the landscape where these fossils were found.”

“These fossils are situated between volcanic deposits, facilitating age determination.”

“We are dating the volcanic ash from eruptions that coincided with the deposition of these fossils.”

“As this new research highlights, this was a pivotal era for human evolution,” said Professor Ramon Arrowsmith from Arizona State University.

“Geology provides critical insights into the age and characteristics of sedimentary layers, including those containing fossils.”

“Whenever an exciting new discovery occurs, paleontologists recognize that further information is essential,” commented Dr. Kay Reid, a paleontologist at Arizona State University.

“We need more fossils, which emphasizes the importance of training individuals to explore and identify new fossil sites.”

“The more fossils we uncover, the better we can understand our distant ancestors and the unique journey of survival that led to our existence.”

The findings are documented in a publication released today in the journal Nature.

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B. Billmoare et al. New discoveries of Australian and Homo from Ledi-Geraru, Ethiopia. Nature, published online August 13, 2025. doi:10.1038/s41586-025-09390-4

Source: www.sci.news

Geoscientists Discover Pulsating Mantle Plume Beneath Remote Area of Ethiopia

According to a study led by researchers at the University of Southampton, these pulses are gradually tearing apart the African continent, resulting in the formation of a new sea basin.

Variation of geochemical and geophysical properties around distant triangles. Image credit: Watts et al, doi: 10.1038/s41561-025-01717-0.

The AFAR region stands out as a unique site on Earth where three structural lifts converge: the main Ethiopian rifts, the Red Sea rifts, and the Gulf of Aden lifts.

Geologists have speculated for some time that a thermal upwelling from the mantle, commonly referred to as plumes, exists beneath this area and promotes the extension of the crust along with the formation of upcoming sea basins.

However, the details regarding the structure of this upwelling and its behavior beneath the lifting plate have remained largely unknown until now.

“Our findings indicate that the mantle below the region is uniform but not stationary; it exhibits a pulsing nature that carries a unique chemical signature,” explained Dr. Emma Watts, who led the study at the University of Southampton and is currently at Swansea University.

“These rising pulses from the partially melted mantle are directed by the overlying filling plate.”

“This insight is crucial for understanding the interaction between the Earth’s interior and its surface.”

Dr. Watts and her team collected over 130 volcanic rock samples from remote areas and significant Ethiopian rifts.

Additionally, they utilized existing data and sophisticated statistical modeling to examine the structure of the crust and mantle, along with the melts within.

Their research reveals a single asymmetric plume beneath the distant region, showcasing distinct chemical bands that recur throughout the lift system, akin to geological barcodes.

These patterns vary in spacing according to the structural conditions of each lift arm.

“The observed chemical stripes imply that the plume pulsates like a heartbeat,” remarked Professor Tom Gernon from the University of Southampton.

“These pulses seem to behave differently based on the thickness of the plate and the rate at which it is pulled apart.”

“In faster-spreading rifts like the Red Sea, the pulsation occurs more efficiently and regularly, similar to a pulse flowing through a narrow artery.”

The findings illustrate that the mantle plume beneath the distant region is dynamic, reacting to the tectonic plate above it.

Dr. Derek Kiel, a researcher at the University of Southampton and the University of Florence, stated:

“This has significant implications for interpreting processes related to surface volcanism, seismic activity, and continental splitting.”

“Our work indicates that deep mantle upwellings flow beneath the tectonic plate, concentrating volcanic activity in the thinnest areas.”

“Understanding the rate and manner of mantle flow beneath the plate is crucial for further research.”

“Collaborating with experts from various fields within the institution, as we did for this project, is vital for uncovering the processes that occur beneath the Earth’s surface and their link to recent volcanic activity,” Dr. Watts emphasized.

“It’s challenging to see the broader picture, akin to assembling a puzzle without all the pieces unless we employ diverse techniques.”

study published in the journal Natural Earth Science.

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ej watts et al. Mantle upwelling at an afor triple junction influenced by the dynamics of the overriding plate. Nat. Geosci Published online on June 25, 2025. doi:10.1038/s41561-025-01717-0

Source: www.sci.news

European Union regulations on deforestation are causing chaos for coffee farmers in Ethiopia

African farmers who produce some of the world’s most respected coffee are scrambling to comply with the new European Union environmental regulations, which require that the origins of any shipping of beans be documented.

The new measures, which will come into effect at the end of this year, are designed to prevent deforestation driven by agriculture expansion. To comply, farmers need to provide geographical data to show that no coffee is being grown on land where forests have recently been cut down.

Producers are unable to lose access to the vast European markets since December 31st.

Europe consumes more coffee than any other country in the world, and experts say the new regulations, officially known as the EU deforestation regulations, are potentially powerful tools to promote sustainable agriculture and prevent deforestation.

But it also represents what we call the “green squeeze,” which places a heavy burden on millions of small farmers in developing countries that are least contributing to climate change, testing the ability of policymakers to balance people’s needs with natural needs.

“Of course, data is very important to us, but what we’re saying is that we need support,” said Degen Daddy, head of the Oromia Coffee Farmers Co-op. “It’s very challenging and expensive and there’s no help for us.”

Dadi said his group, Ethiopia’s largest cooperative of coffee growers, has more than half a million members based in the central part of the country and could not prepare all the farms by the deadline, possibly without additional support.

Trainers have been crossing the Oromia region for over a year, collecting map coordinates and assisting farmers with new technology. As of March, they were mapping 24,000 farms. European officials validate shipments by cross-checking current geographical allocation data against baseline satellite images and forest cover maps.

Daddy said the cost of mapping one farm is about $4.50. The cost of training is partially covered by grants from the International Trade Centre, a joint organisation of the United Nations and the World Trade Organization, established to help poor countries expand their trade.

Ethiopia is the top coffee producer in Africa, with crops accounting for around 35% of the country’s revenue. The Arabica variety is smooth and gentle with fruity, nutty notes, and comes from the country’s southwest highlands. Over a third of Ethiopian coffee is sent to Europe.

Last year’s French government report says EU consumption is liable 44% of coffee-related deforestation all over the world. Another report by the Environmental Group, World Resources Research Institute, found that there was about 2 million hectares of forest cover Replaced with a coffee farm Between 2001 and 2025. Indonesia, Brazil and Peru recorded some of the highest deforestation rates in that period.

The global leader pledged in 2021 at Glasgow Climate Summit to end deforestation by 20303. The agreement highlighted a growing awareness of nature’s role in tackling the climate crisis. The intact forests are natural reservoirs of carbon that warm the planets, keeping them away from the atmosphere. As carbon dioxide, trapping the heat of the sun increases global warming. Once the forest is cleared, these areas will switch to greenhouse gas emissions. Additionally, by destroying habitats, it harms the biodiversity of forests and its diversity.

The new EU regulations also cover cattle, cocoa, palm oil, rubber and other crops. Shipment of coffee without proper mapping data can be denied or confiscated and can be fined on the importer.

However, some experts say the measure is being implemented without the necessary support for farmers.

Jodie Keane, an economist at ODI Global, a London-based research organization, said the European Union and major coffee chains should do more to help smallholder farmers.

“We all want to prevent deforestation,” Keene said. “But when applying that standard to rural producers, you need to provide a lot of outreach, sensitization. You need to invest in learning how to do things differently so that they don’t drop them out of the supply chain.”

This was reflected by Etelle Higonet, founder of the watch group Coffee Watch. “These are some of the richest companies in the world,” she said of the European coffee chain. “Of course they could afford to do this.”

In an email, Johannes Dengler, managing partner of Alois Dallmayr, one of Germany’s most well-known coffee brands, confirmed that the new rules are a “big challenge” for Ethiopia. He said Dallmayr is developing a system to ensure compliance and is “working closely with his partners to find viable solutions.”

The Director-General of the European Union’s Trade and Economic Security did not respond to a request for comment. in News Release on April 15th Based on feedback from partner countries, the bloc said it allocated 86 million euros, or about $97 million, to support compliance efforts.

Ethiopian coffee farmers take pride in their high quality beans, as a result of exceptional heirloom varieties, highlands and traditional agricultural practices.

In southwestern Zinma Highlands, farmers like Zinabu Abadura say most growers follow long-standing unwritten rules for cutting trees.

Abadura, who sells directly to informal intermediaries, said his farm has not yet been mapped. Most farmers in his area generate coffee revenue and cannot afford to pay any confusion or additional costs. “Life will be difficult,” he said, as new European rules will be implemented.

However, the new EU standards can sort Ethiopia’s coffee sector, but analysts say they probably won’t stop selling.

Countries like China offer alternative, less isolated markets. And Ethiopia itself is a big coffee drinker. Hospitality is incomplete without a coffee ceremony hosting roasts, grinds and brews in front of guests. About half of the country’s annual coffee production stays at home.

But Tsegaye Anebo, who heads the Sidama Coffee Union, which represents 70,000 farmers, said the pivot to the new market would be disruptive in the short term. He said that the species of ferns in his area are distinctive in its fruity tone and are a favorite in wealthy Europe. And that means premium prices.

Giving up the EU market is not an option, he said.

“We need the EU,” Anebo said. “But they need us too, because they can’t find our coffee anywhere.”

Munira Abdelmenan contributed the report.

Source: www.nytimes.com

Meta is currently facing a £1.8 billion lawsuit alleging it incited violence in Ethiopia.

A lawsuit totaling $2.4 billion (£1.8 billion) has been filed against Meta, accusing the owners of Facebook of contributing to violent activities following a ruling by the Kenya High Court allowing legal proceedings against US technology companies to proceed.

The suit, brought by two Ethiopians, demands that Facebook change its algorithm to increase the number of content moderators in Africa and prevent the promotion of hate-driven material and instigation of violence. It also seeks a $2.4 billion “return fund” for victims affected by hatred and violence incited on Facebook.


One of the plaintiffs is the son of Professor Meareg Amare Abrha, who was killed in Ethiopia after his location and threatening position were exposed on Facebook during a civil war in 2021. The other plaintiff, Fissehatekle, a former Amnesty International researcher, released a report on violence during a conflict in Tigray, northern Ethiopia, and also faced violence orchestrated through Facebook.

Meta argues that the Kenyan court, where Facebook’s Ethiopian moderator was situated, does not have jurisdiction over the case. However, the Kenya High Court in Nairobi ruled that the case falls within the state court’s jurisdiction.

Abrham Meareg, son of Meareg, expressed gratitude for the court’s decision, emphasizing the importance of Meta being accountable under Kenyan law. Tekuru, unable to return to Ethiopia due to Meta’s insufficient safety measures, called for fundamental changes in content moderation on all platforms to prevent similar incidents.

The lawsuit, backed by nonprofit organizations like Foxglove and Amnesty International, also demands a formal apology from Meta for Meareg’s murder. Katiba Institute, a Kenya-based NGO focusing on constitutional matters, is the third plaintiff in the case.

In a 2022 analysis, it was found that Facebook allowed content inciting violence through hatred and misinformation despite knowing the repercussions in Tiggray. Meta refuted the claims, citing investments in safety measures and efforts to combat hate speech and misinformation in Ethiopia.

In January, Meta announced plans to remove fact checkers and reduce censorship on its platform while continuing to address illegal and severe violations. Meta has not commented on the ongoing legal proceedings.

Source: www.theguardian.com

According to a study, Arabica coffee has been traced back to its origins in Ethiopia over 600,000 years ago.

An international team of scientists has generated the highest quality reference genome to date for coffee arabica, the world's most popular coffee species (arabica coffee tree). Their results suggest that this species developed through natural hybridization between two other coffee species in the forests of Ethiopia more than 600,000 years ago. coffee tree and robusta coffee (Coffea genus).

arabica coffee tree. Image credit: Sci.News.

Arabica is the source of approximately 60% of all coffee products in the world, and its seeds help millions of people start their day and stay up late.

Arabica populations waxed and waned throughout millennia of Earth's heating and cooling periods, eventually being cultivated in Ethiopia and Yemen and then spreading around the world.

Professor Victor Albert of the University at Buffalo said: “We are using genomic information from living plants to go back in time and map the long history of Arabica as accurately as possible, and to understand how modern cultivars have evolved. “We have clarified whether the two are interrelated.'' .

From a new reference genome created using state-of-the-art DNA sequencing technology and advanced data science, Professor Albert and his colleagues identified 39 Arabica species and the 18 that Swedish naturalist Carl Linnaeus used to name the species. Even century specimens could be sequenced.

“Although other public references exist on Arabica coffee, the quality of our team's research is very high,” said Dr. Patrick Descombe from Nestlé Research.

“We used state-of-the-art genomics approaches, including long-read and short-read high-throughput DNA sequencing, to create the most advanced, complete and continuous Arabica reference genome to date.”

arabica coffee tree It is formed as a natural hybrid between Coffea genus and coffee treethen received two sets of chromosomes from each parent.

Scientists have struggled to pinpoint exactly when and where this allopolyploidization phenomenon occurred, with estimates ranging from 10,000 years ago to 1 million years ago.

To find evidence of the original event, the researchers ran the genomes of various Arabica species through a computational modeling program, looking for traces of the species' foundation.

The model shows three population bottlenecks in the history of Arabica, the oldest of which occurred about 29,000 generations, or 610,000 years ago.

this suggests arabica coffee tree It was formed shortly before that, between 610,000 and 1 million years ago.

“So the hybridization that produced Arabica was not human-made. It is clear that this polyploidy phenomenon predates modern humans and coffee cultivation,” Professor Albert said.

Coffee trees were long thought to have developed in Ethiopia, but the varieties the researchers collected around the Great Rift Valley, which stretches from southeastern Africa to Asia, showed a clear geographic divide.

The wild species studied all originate from the western side, whereas all cultivated varieties originate from the eastern side, closest to the Bab al-Mandab strait that separates Africa and Yemen.

This is consistent with evidence that coffee cultivation may have originated primarily in Yemen around the 15th century.

Indian monk Baba Budhan believed it Around 1600 AD, the legendary “seven seeds” were smuggled out of Yemen, establishing the Indian Arabica variety and setting the stage for today's global spread of coffee.

“It appears that Yemen's coffee diversity may be the originator of all of today's major varieties,” Dr. Descombe said.

“Coffee is not a crop that has been highly hybridized to create new varieties, like corn or wheat.”

“People mainly chose their favorite varieties and grew them. So the varieties we have today have probably been around for a long time.”

East Africa's geo-climatic history is well documented through research on human origins, allowing researchers to understand how climate change and wild and cultivated Arabica populations have fluctuated over time. can be compared.

Modeling shows a long period of low population size between 20,000 and 100,000 years ago, combined with a prolonged drought that is thought to have hit the region between 40,000 and 70,000 years ago. This almost corresponds to a cold climate.

The population then increased during the Wet Period in Africa, about 6,000 to 15,000 years ago, and growing conditions are thought to have become more favorable.

Around the same time, about 30,000 years ago, wild species diverged from the varieties that would eventually become domesticated by humans.

“They still occasionally breed with each other, but this probably stopped around 8,000 to 9,000 years ago, around the end of the African Humid Period and the widening of the straits due to rising sea levels,” said Yarko, a researcher at the Southern Ocean Institute of Technology. Dr. Sarojärvi said. University.

of result Published in an online journal this week natural genetics.

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J. Sarojärvi other. 2024. Allopolyploid genomes and population genomics arabica coffee tree Uncovering the history of modern coffee variety diversification. Nat Genet 56, 721-731; doi: 10.1038/s41588-024-01695-w

Source: www.sci.news