An uncertainty-focused database approach to extract spatiotemporal trends from qualitative and discontinuous lake-status histories

Cort, Gijs De; Chevalier, Manuel; Burrough, Sallie L.; Chen, Christine Y.; Harrison, Sandy P.

doi:10.1016/j.quascirev.2021.106870

Cited by 12 publications

(2 citation statements)

References 204 publications

(204 reference statements)

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“…Harrison and Sanchez Goñi 2010). Similarly, records of changes in lake levels have been interpreted as indicating changes in the moisture balance over the lake and its catchment (Cheddadi et al 1997;De Cort et al 2021). Geomorphic evidence, including the presence of loess, dunes or fluvial deposits also indicate changing climatic conditions (Macklin, Lewin and Woodward 2012;Lehmkuhl et al 2021).…”

Section: Reconstruction Toolsmentioning

confidence: 99%

Proceedings of the 12th International Congress on the Archaeology of the Ancient Near East

Marchetti¹,

Campeggi²,

Cavaliere³

et al. 2023

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The impact of humans on climate and landscape is obvious today when anthropogenic climate change impacts are being felt around the world and more than 10% of the land surface is intensively managed. However, transformations of natural ecosystems by humans began with the shift from hunting and gathering to cultivation during the Mesolithic and Neolithic periods. There have also been substantial changes in climate during the Holocene, giving rise to natural changes in vegetation cover and fire regimes. It is important to quantify the impact of natural and anthropogenic influences on landscapes at a regional scale, and understand how climate-induced changes affected the resources available to people and hence the expansion of human populations, to provide a firm foundation for interpreting human development in the past and for predicting human-environment interactions in the future. Several recent developments make it possible to address these issues more systematically. New statistical tools have been developed that provide independent and robust quantitative reconstructions of past changes in climate, vegetation and fire regimes through the Holocene. These reconstructions can be compared with evidence for population growth and/or agricultural practices at a regional scale to isolate human and natural impacts on ecosystems and disturbance regimes. Process-based modelling tools, including eco-evolutionary optimality models of gross primary production and of specific crop types, can be used to disentangle the roles of climate, climate variability, changes in atmospheric CO 2 levels, and agricultural practices on agricultural yields through time. Transient climate model simulations can be used to examine the response of regional climates to changes in external forcing through time and also the interaction between long-term trends in climate, changes in climate modes and unforced climate variability. Together, these tools can be used to foster a better understanding of the climate-human nexus during the Holocene.

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Section: Reconstruction Toolsmentioning

confidence: 99%

Proceedings of the 12th International Congress on the Archaeology of the Ancient Near East

Marchetti¹,

Campeggi²,

Cavaliere³

et al. 2023

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“…However, the potential of long‐term sedimentary archives in lakes is often constrained by numerous factors such as low sedimentation rates or non‐deposition (Desiage et al, 2015, Lajeunesse et al, 2017), or simply because most lakes worldwide only formed following the end of the last glacial, hence being younger than 20 ka (Kelts 1988). In addition, missing accommodation space, drystand periods (De Cort et al, 2021) or absent sediment preservation in a lake result in a sedimentary hiatus. Direct glacial erosion or mass movements can remobilize sediments and thus be the reason for the lack of sediment preservation (Gagnon‐Poiré et al, 2018, Trottier et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Valley morphology and Quaternary seismic stratigraphy of the Manicouagan impact crater lake (Eastern Canada)

Lenz

Gebhardt

Lajeunesse

et al. 2023

J Quaternary Science

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Lakes in formerly glaciated regions can provide valuable paleoclimate archives. Lake Manicouagan (Manikuakan, according to Innu toponymy), formed in the basin of the ~214‐Ma Manicouagan impact crater of eastern Québec, is a key area for reconstructing long‐term environmental change, as it was directly affected by the Pleistocene glaciations and the waxing and waning of the Laurentide Ice Sheet. Here, we present high‐resolution seismic data revealing an overdeepened bedrock valley filled with a sedimentary sequence. We assess its potential to serve as a paleoclimate archive. The varying shape of the overdeepened valley indicates complex erosional processes. A lower narrow V‐shaped gorge is indicative of either pressurized subglacial meltwater or pre‐Quaternary fluvial erosion, or a combination of both. Three scenarios are discussed regarding deposition of the sedimentary sequence: (i) deposition only during and after retreat of the last glacial episode; (ii) deposition during multiple glacial–interglacial cycles; and (iii) deposition mainly during a subglacial lake stage. We suggest subglacial followed by proglacial sedimentation as the most probable scenario for deposition of the sedimentary succession. We recommend considering the sediments of Lake Manicouagan as a paleoclimate archive reaching back at least to 7.5 ka, but the lake also probably contains sediments deposited before the last deglacial period.

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Environmental Background to the Kenya Rift Lakes: An Introduction

Renaut,

Owen

2023

Syntheses in Limnogeology

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An uncertainty-focused database approach to extract spatiotemporal trends from qualitative and discontinuous lake-status histories

Abstract: This document provides information on the synthesis of lake-status histories from selected sites in southern and eastern Africa. It is part of Zenodo object

Cited by 12 publications

References 204 publications

Proceedings of the 12th International Congress on the Archaeology of the Ancient Near East

Proceedings of the 12th International Congress on the Archaeology of the Ancient Near East

Valley morphology and Quaternary seismic stratigraphy of the Manicouagan impact crater lake (Eastern Canada)

Environmental Background to the Kenya Rift Lakes: An Introduction

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