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Biogeography, Ecology, & Modelling (BEAM)
Ngura Nandamari

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Ancient journeys: how climate and the environment shaped the global expansion of early humans
In our new global study, we combine archaeological, genetic, and climate data to reveal how early humans migrated out of Africa over 70,000 years ago. Using advanced modelling, we mapped likely migration routes across Eurasia and the Americas, showing our ancestors followed warm, humid areas near rivers and forests. The findings highlight how climate and environment shaped human expansion, an insight that resonates today as biodiversity loss threatens our ability to adapt and
Frederik Saltre
Jun 11, 20244 min read


New ecosystems, unprecedented climates: more Australian species than ever are struggling to survive
Australia is home to a remarkable share of the world’s biodiversity, but this unique natural heritage is under threat. Habitat destruction, climate change, and invasive species are driving more species toward extinction. In 2023 alone, 144 new species and ecosystems were added to the threatened list. Many more, especially marine and lesser-known species, face similar risks. As climate change reshapes ecosystems, urgent action is needed to halt the decline and secure species’
Frederik Saltre
Feb 21, 20245 min read


Rextinct: a new tool to estimate when a species went extinct
Rextinct is a new R package that estimates extinction dates using radiocarbon-dated fossils. It implements CRIWM, a method that accounts for gaps in the fossil record and dating uncertainty. Unlike older tools, it doesn’t assume fossil ages are evenly spread or errors are normally distributed, making it more accurate and flexible. Rextinct helps scientists track when species disappeared—and understand why.
Frederik Saltre
Dec 18, 202313 min read


Warming oceans might force New Zealand’s sperm and blue whales to shift to cooler southern waters
As the world’s oceans absorb over 90% of excess heat from greenhouse gas emissions, rising sea temperatures are driving major changes in marine ecosystems. We predict that both sperm and blue whales will shift their range southward around New Zealand by 2100, especially under more severe climate scenarios. This mouvement threatens key foraging grounds like Kaikōura and South Taranaki Bight. Protecting emerging southern habitats could offer future sanctuaries for these vital o
Frederik Saltre
Aug 19, 20224 min read
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