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Ancient West African foragers in the context of African population history 期刊论文
NATURE, 2020, 577 (7792) : 665-+
作者:  Grunwald, Hannah A.;  Gantz, Valentino M.;  Poplawski, Gunnar;  Xu, Xiang-Ru S.;  Bier, Ethan;  Cooper, Kimberly L.
收藏  |  浏览/下载:41/0  |  提交时间:2020/07/03

Genome-wide ancestry profiles of four individuals, dating to 8,000 and 3,000 years before present, from the archaeological site of Shum Laka (Cameroon) shed light on the deep population history of sub-Saharan Africa.


Our knowledge of ancient human population structure in sub-Saharan Africa, particularly prior to the advent of food production, remains limited. Here we report genome-wide DNA data from four children-two of whom were buried approximately 8,000 years ago and two 3,000 years ago-from Shum Laka (Cameroon), one of the earliest known archaeological sites within the probable homeland of the Bantu language group(1-11). One individual carried the deeply divergent Y chromosome haplogroup A00, which today is found almost exclusively in the same region(12,13). However, the genome-wide ancestry profiles of all four individuals are most similar to those of present-day hunter-gatherers from western Central Africa, which implies that populations in western Cameroon today-as well as speakers of Bantu languages from across the continent-are not descended substantially from the population represented by these four people. We infer an Africa-wide phylogeny that features widespread admixture and three prominent radiations, including one that gave rise to at least four major lineages deep in the history of modern humans.


  
Empirically based spatial projections of US population age structure consistent with the shared socioeconomic pathways 期刊论文
ENVIRONMENTAL RESEARCH LETTERS, 2019, 14 (11)
作者:  Striessnig, Erich;  39;Neill, Brian C.
收藏  |  浏览/下载:20/0  |  提交时间:2020/02/17
spatial population  age structure  population projections  shared socioeconomic pathways  
Bacteria-in-paper, a versatile platform to study bacterial ecology 期刊论文
ECOLOGY LETTERS, 2019, 22 (8) : 1316-1323
作者:  Hol, Felix J. H.;  Whitesides, George M.;  Dekker, Cees
收藏  |  浏览/下载:23/0  |  提交时间:2019/11/27
Bacteria  colonisation  dendritic networks  experimental tools  habitat structure  microfabrication  paper  population dynamics  range expansion  spatial structure  
Long-term population dynamics of small mammals in tropical dry forests, effects of unusual climate events, and implications for management and conservation 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 426: 123-133
作者:  Mason-Romo, Edgard D.;  Ceballos, Gerardo;  Lima, Mauricio;  Martinez-Yrizar, Angelina;  Jaramillo, Victor J.;  Maass, Manuel
收藏  |  浏览/下载:17/0  |  提交时间:2019/04/09
Population dynamics  Global climate disruption  Tropical dry forests  Small mammals  Feedback structure  Extreme climate events  
Historical seed use and transfer affects geographic specificity in genetic diversity and structure of old planted Pinus thunbergii populations 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 408: 211-219
作者:  Iwaizumi, Masakazu G.;  Miyata, Shousuke;  Hirao, Tomonori;  Tamura, Miho;  Watanabe, Atsushi
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09
Genetic diversity  Genetic structure  Historical seed transfer  Pinus thunbergii  Planted population  
Extensive sib-mating in a refugial population of beech (Fagus sylvatica) growing along a lowland river 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2018, 407: 66-74
作者:  Ouayjan, Adib;  Hampe, Arndt
收藏  |  浏览/下载:22/0  |  提交时间:2019/04/09
Forest genetic resources  Long-term population persistence  Mating system  Pollen cloud  Riparian forest  Spatial genetic structure  
Modelling time to population extinction when individual reproduction is autocorrelated 期刊论文
ECOLOGY LETTERS, 2017, 20 (11)
作者:  Lee, Aline Magdalena;  Saether, Bernt-Erik;  Markussen, Stine Svalheim;  Engen, Steinar
收藏  |  浏览/下载:20/0  |  提交时间:2019/04/09
Age structure  demographic stochasticity  dynamic heterogeneity  environmental stochasticity  extinction  life history  matrix model  moose  population growth  reproductive autocorrelation  
The role of ecology, neutral processes and antagonistic coevolution in an apparent sexual arms race 期刊论文
ECOLOGY LETTERS, 2017, 20 (9)
作者:  Perry, Jennifer C.;  Garroway, Colin J.;  Rowe, Locke
收藏  |  浏览/下载:14/0  |  提交时间:2019/04/09
Arms race  genetic structure  Gerridae  intersex genetic correlation  neutral divergence  population variation  sexual conflict  sexually antagonistic coevolution  spatial structure  water striders  
Uniquely regenerating frankincense tree populations in western Ethiopia 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2017, 389
作者:  Teshome, Mindaye;  Eshete, Abeje;  Bongers, Frans
收藏  |  浏览/下载:18/0  |  提交时间:2019/04/09
Population structure  Dry land forest  Regeneration bottleneck  Climate factor  Human disturbance  
The human core of the shared socioeconomic pathways: Population scenarios by age, sex and level of education for all countries to 2100 期刊论文
GLOBAL ENVIRONMENTAL CHANGE-HUMAN AND POLICY DIMENSIONS, 2017, 42
作者:  Samir, K. C.;  Lutz, Wolfgang
收藏  |  浏览/下载:23/0  |  提交时间:2019/04/09
World population  Education  Age structure  Scenarios  Country level  Shared socioeconomic pathways