Thibaut Caley, Antoine Souron, Kevin T Uno, Gabriele A Macho
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Climate and Human Evolution: Insights from Marine Records.
The relationship between climate and human evolution is complex, and the causal mechanisms remain unknown. Here, we review and synthesize what is currently known about climate forcings on African landscapes, focusing mainly on the last 4 million years. We use information derived from marine sediment archives and data-numerical climate model comparisons and integration. There exists a heterogeneity in pan-African hydroclimate changes, forced by a combination of orbitally paced, low-latitude fluctuations in insolation; polar ice volume changes; tropical sea surface temperature gradients; the Walker circulation; and possibly greenhouse gases. Pan-African vegetation changes do not follow the same pattern, which is suggestive of additional influences, such as CO2 and temperature. We caution against reliance on temporal correlations between global or regional climate, environmental changes, and human evolution and briefly proffer some ideas on how pan-African climate trends could help create novel conceptual frameworks to determine the causal mechanisms of associations between climate/habitat change and hominin evolution.
期刊介绍:
The Annual Review of Marine Science, published since 2009, offers a comprehensive overview of the field. It covers various disciplines, including coastal and blue water oceanography (biological, chemical, geological, and physical), ecology, conservation, and technological advancements related to the marine environment. The journal's transition from gated to open access through Annual Reviews' Subscribe to Open program ensures that all articles are available under a CC BY license, promoting wider accessibility and dissemination of knowledge.