Gradual or abrupt? Changes in water source of Lake Turkana (Kenya) during the African Humid Period inferred from Sr isotope ratios

Using strontium isotopes to determine philopatry and dispersal in primates: a case study from Kibale National Park

“…In fact, we know that within our own dataset KCP 6 was an adult female chimpanzee born in Kanyawara who did not ever disperse (M. Muller 2015, personal communication). Even in situations where dispersal by members of a species' dispersing sex is not ubiquitous, it is reasonable that a greater proportion of members of this sex will disperse compared with members of the species' philopatric sex [80][81][82][83]. We can, therefore, use the frequency of matches versus mismatches between the ecologically expected attribution (based on species-level sex-biases) and the assigned attribution (from the isotopic model) to determine the degree of reliability for a given modelling approach, even knowing that some expected attributions may be inaccurate for some individuals.…”

“…In much of East Africa, home to some of the most detailed hominin fossil material, volcanic activity over the past 5 Myr has dramatically changed the geologic landscape. Changes in the hydrology of the East African Rift [ 83 ], including the formidable palaeo-Omo River, means many of these hominin fossil sites that were probably lacustrine or gallery forests today are dry and arid. Other studies have demonstrated the potentially dramatic shift in bioavailable strontium between riparian and non-riparian environments [ 24 , 52 ].…”

Lithic technological strategies of the earliest herders at Lake Turkana, northern Kenya

“…This coincides with another retreat of lake water levels and a prolonged shift towards more arid conditions across the Turkana Basin (van der Lubbe et al . 2017). The few known post-Nderit sites attest to some continuation of mixed small-scale herding, fishing and foraging (Phillipson 1977, 1984; Wright et al .…”

The Holocene lake-evaporation history of the afro-alpine Lake Garba Guracha in the Bale Mountains, Ethiopia, based on δ18O records of sugar biomarker and diatoms

“…They incorporate information about changes in the catchment, including varying erosion, often without significant anthropogenic disturbance or desiccation (Arnaud et al, 2016). In eastern Africa, high-altitude paleolimnological research has been carried out at Lake Ashenge (2442 m asl; Marshall et al, 2009), Lake Dendi (2840 m asl; Wagner et al, 2018), Sacred Lake (2350 m asl on Mount Kenya; Barker et al, 2001Barker et al, , 2011Street-Perrott et al, 2008;Loomis et al, 2015Loomis et al, , 2017, and Lake Garba Guracha (3950 m asl on the Bale Mountains; Umer et al, 2007;Tiercelin et al, 2008;Bittner et al, 2020).…”

“…At Garba Guracha, early work by Umer et al (2007) and Tiercelin et al (2008) focused on sedimentological, geochemical, and pollen analyses. Their work indicates that Garba Guracha is one of the longest, most continuous high-resolution Late Quaternary environmental archives from highland Africa.…”