Dwelling the hill: Traces of increasing sedentism in hunter-gatherers societies at Checua site, Colombia (9500-5052 cal BP)

Archila, Sonia; Groot, Ana María; Ospina, Juan P.; Mejía, Martha; Zorro, Catalina

doi:10.1016/j.quaint.2020.07.040

Cited by 10 publications

(11 citation statements)

References 27 publications

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“…Biomass burning is therefore likely to have been a major driver of ecological change in Monquentiva at a time when humans become a likely source of ignition. The timing of increased sedentism of early human groups in the CCO at 7.5 kyr BP (Archila et al, 2021) also supports our interpretation. Climatically, increased ENSO frequency from 7.0 kyr BP (Moy et al, 2002) also facilitated the ignition of the fires that had such a large impact on the Monquentiva vegetation.…”

Section: Ecological Novelty In Monquentivasupporting

confidence: 86%

“…However, as permanent residents have been recorded in the CCO from ca. 7.5 kyr BP (Archila et al, 2021), it is probable that if humans were using fire, this was at a limited scale in the surrounding areas of Monquentiva during the Mid-Holocene. This is consistent with the decoupling of local and regional charcoal signals ca.…”

Section: Did Humans Ignite Fires In Monquentiva?mentioning

confidence: 99%

“…28,000 plant species, highlighting their importance as a biodiversity hotspot (Bernal et al, 2015;Rangel-Ch, 2015). Since pre-Hispanic times, human groups have drawn on Andean natural resources, promoting the development of diverse societies (Aceituno et al, 2013;Archila et al, 2021;Cano et al, 2021). Despite the relevance of Colombian Andean ecosystems, expansion of human activities jeopardizes their continuity in the coming decades.…”

Section: Introductionmentioning

confidence: 99%

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Holocene Fires and Ecological Novelty in the High Colombian Cordillera Oriental

Espinoza

Franco-Gaviria

Castañeda³

et al. 2022

Front. Ecol. Evol.

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Rapid climate changes and the increasing presence of humans define the Holocene Epoch (11.6 calibrated kiloyears before present – hereafter kyr BP), when biological systems have faced the most recent and abrupt environmental changes. Understanding how biodiversity responds to extrinsic factors requires determining the effects of varying climatic conditions, changes in disturbance regimes, and increasing anthropogenic impacts. Despite being one center for biodiversity, the potential synergies of long-term anthropogenic and climate changes in shaping areas of high Andean biodiversity have yet to be explored fully. Here we present new pollen and charcoal records from the Pantano de Monquentiva (hereafter Monquentiva) on the highlands of the eastern flank of the Colombian Cordillera Oriental (CCO) to document relationships between climate, vegetation, and fire through the Holocene. We found compositional transitions at 8.7, 6.1, and 4.1 kyr BP at Monquentiva resulting from the interaction of climate, fire, and human occupation. Reduced moisture and temperature caused a compositional shift in Páramo vegetation from ca. 8.7 kyr BP. Fire activity was recorded throughout the Holocene and increased slightly during the Mid-Holocene when regional and local fire decoupling suggested human activities as the source of ignition. Mid-Holocene fires had a large effect on the vegetation composition at Monquentiva which recorded a rapid shift at ca. 6.8 kyr BP. Fire activity increased sharply from 4.1 kyr BP, promoting the reorganization of plant communities at 3.8 kyr BP. This shift in fire activity was likely related to more severe ENSO events and subsequently intensified by human activities after 3.8 kyr BP. Although high climatic sensitivity explains most Holocene vegetation changes in the eastern flank of the CCO, our study highlights the relevance of fire activity, uneven distribution of climatic variables, and human intervention to the composition of the vegetation we see today.

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Section: Ecological Novelty In Monquentivasupporting

confidence: 86%

Section: Did Humans Ignite Fires In Monquentiva?mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Holocene Fires and Ecological Novelty in the High Colombian Cordillera Oriental

Espinoza

Franco-Gaviria

Castañeda³

et al. 2022

Front. Ecol. Evol.

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“…In addition, these authors misinterpreted the original radiocarbon chronology of the site (Groot, 1992) and assumed that all individuals belong to the earliest occupational events. Direct dating of some of these skeletons confirmed their mostly middle Holocene age (Carvajal et al, 2014;Rodríguez Cuenca in Díaz-Matllana, 2015;Archila et al, 2020). Therefore, such studies cannot be considered as supportive of long-standing population continuity in the SB region over the Holocene but a more restricted one from early to middle Holocene at best (~9,000-6,000 cal BP).…”

Section: Genetic Continuity Over the Holocene In The Sabana De Bogotá Region?mentioning

confidence: 91%

“…The Sabana de Bogotá (SB) in the eastern highlands of Colombia, Northern South America, is a well-known archaeological region that played an important role in the initial human expansion into South America (Correal, 1986;Ardila, 1991;Dillehay, 2000;Aceituno et al, 2013;Delgado et al, 2015ab;Delgado, 2017). In this region, archaeological investigations have recovered abundant lithic, paleobotanical and zooarchaeological evidences in addition to hundreds of burials with well-preserved human skeletal remains dating from 12,164 to 300 cal BP (Correal and van der Hammen, 1977;Correal, 1979Correal, , 1990Ardila, 1984;Botiva, 1989;Correal., 1987;Boada, 1987;Enciso, 1990Enciso, -1991Groot, 1992;Orrantia, 1997;Archila and Langebaek, 2015;Triana, 2019Archila et al, 2020Ospina and Archila, 2020). In addition, detailed reconstructions of the predominant environmental conditions during the last 18,000 years have been performed on the basis of palynological, glaciomorphological, isotopic and diatom evidences (van der Hammen, 1974;van der Hammen and Hooghiemstra, 1995;Marchant et al, 2002;Vélez et al, 2006;Gómez et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

A paleogenetic perspective of the Sabana de Bogotá (Northern South America) population history over the Holocene (9000–550 cal BP)

Delgado

Rodríguez

Kassadjikova

et al. 2021

Quaternary International

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On the basis of distinct lines of evidence, detailed reconstructions of the Holocene population history of the Sabana de Bogotá (SB) region, Northern South America, have been performed. Currently, there exist two competing models that support temporal continuity or, alternatively, divergence. Despite recent research that lends support to the population discontinuity model, several discrepancies remain, calling for other kinds of evidences to be explored for a more detailed picture of Holocene biocultural evolution.In this study, we analyze the mitochondrial genetic diversity of 30 individuals (including 15 newly reported complete mitochondrial genomes) recovered from several archaeological sites spanning from the late Pleistocene (12,164 cal BP) until the final late Holocene (2,751 cal BP) along with published data from the region dating ~9,000-550 cal BP in order to investigate diachronic genetic change. Genetic diversity and distance indices were calculated, and demographic models tested in an approximate Bayesian computation (ABC) framework to evaluate whether patterns of genetic affinities of the SB prehispanic populations support genetic continuity or discontinuity. The results show that mitochondrial genomes of the complete dataset fall within the Native American haplogroups A2, B2, C1b, D1 and D4h3a. Haplotype and nucleotide diversity declined over time with further evidence of genetic drift and remarkable reduction of genetic diversity during the final late Holocene. Inter-population distances and the exact test of population differentiation, as well as demographic simulations show no population differentiation and population continuity over time. Consequently, based on the analyzed data, we cannot reject the genetic continuity in the SB region as a plausible population history scenario. However, the restriction of the analyses to the Hyper Variable Region 1 of the mitochondrial genome, and the very low sample size both constitute significant limitations to infer evolutionary history.

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