Forest and lake dynamics in response to temperature, North American monsoon and ENSO variability during the Holocene in Colorado (USA)

Jiménez‐Moreno, Gonzalo; Anderson, R. Scott; Shuman, Bryan N.; Yackulic, Ethan O.

doi:10.1016/j.quascirev.2019.03.013

Cited by 18 publications

(12 citation statements)

References 100 publications

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“…In addition, correlation with the regional Holocene climate of the southern Rockies and Sierra Nevada suggests the highstand sediment is probably not older than late Holocene. The relatively arid climate of the middle Holocene throughout the region—including the study area, the Rocky Mountains of southern Colorado, and the Sierra Nevada of eastern California—was not conducive to high-water levels (Hevly, 1965; Davis and Schafer, 1992; Anderson, 1993; Weng and Jackson, 1999; Shuman et al, 2009; Anderson et al, 2018; Jiménez-Moreno et al, 2019). Late Holocene periglacial features, including boulder streams, protalus ramparts, and rare rock glaciers, occur on San Francisco Mountain.…”

Section: Resultsmentioning

confidence: 99%

Historical and prehistorical water levels of Mormon Lake, Arizona as a measure of climate change on the southwest Colorado Plateau, USA

Hereford

Amoroso

2020

Quat. res.

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Mormon Lake, elevation 2166 m with maximum historic surface area of 31.4 km2, lies in a forested endorheic basin covering 103 km2. It is the largest unaltered freshwater body on the 337,000 km2 Colorado Plateau. Prehistorical (before AD 1878) highstands were ca. 9 and 24 m relative to depocenter datum. These levels likely occurred during four multidecadal episodes of cool, wet conditions between ca. 3.55 and 0.20 ka BP. Maximum historical levels (early 1900s) were up to 7.9 m, whereas modern (post-1941) levels were frequently zero or relatively low. Historical climate records indicate reconstructed lake levels correlate directly with annual precipitation and inversely with temperature. Early highstands were associated with above average precipitation and the lowest temperatures of the 116 yr record. The lake receded after 1941; thereafter, frequent drying and low-water levels resulted from recurrent drought and steadily increasing temperatures. Consequently, a wet episode from the 1970s to the 1990s had precipitation like the early 1900s, but highstands were only ca. 3.8 m. The historical lake-level chronology is consistent with changes of hydrologic balance predicted by climate models, that is, reduced effective precipitation (precipitation minus evaporation). These changes, particularly aridification, apparently began in the 1970s or earlier. Global oceanic and atmospheric climate modulate lake levels and regional hydroclimate.

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Section: Resultsmentioning

confidence: 99%

Historical and prehistorical water levels of Mormon Lake, Arizona as a measure of climate change on the southwest Colorado Plateau, USA

Hereford

Amoroso

2020

Quat. res.

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“…HSI has been applied to lake sediments from across the globe, with the majority of sites being in Europe. The most common application has been the reconstruction of past aquatic productivity based on the absorbance of chloropigments [ 12 , 13 , 14 , 43 , 44 , 45 , 47 , 49 , 50 , 51 , 53 , 66 , 73 , 74 , 75 ]. Other sedimentary variables interpreted from HSI include bacteriopheophytin a [ 6 , 12 , 13 , 43 , 44 , 45 , 47 , 49 , 50 , 51 , 53 , 75 ], phycocyanin [ 44 ], bulk organic matter [ 11 , 55 ], aromatic organic matter [ 44 ], charcoal [ 12 , 62 ], tephra [ 54 ], flood layers [ 17 , 18 ], particle size [ 15 , 16 ], calcite [ 12 , 47 ], and lithogenic minerals [ 12 , 45 , 46 ].…”

Section: Applicationsmentioning

confidence: 99%

Scanning Hyperspectral Imaging for In Situ Biogeochemical Analysis of Lake Sediment Cores: Review of Recent Developments

2022

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Hyperspectral imaging (HSI) in situ core scanning has emerged as a valuable and novel tool for rapid and non-destructive biogeochemical analysis of lake sediment cores. Variations in sediment composition can be assessed directly from fresh sediment surfaces at ultra-high-resolution (40–300 μm measurement resolution) based on spectral profiles of light reflected from sediments in visible, near infrared, and short-wave infrared wavelengths (400–2500 nm). Here, we review recent methodological developments in this new and growing field of research, as well as applications of this technique for paleoclimate and paleoenvironmental studies. Hyperspectral imaging of sediment cores has been demonstrated to effectively track variations in sedimentary pigments, organic matter, grain size, minerogenic components, and other sedimentary features. These biogeochemical variables record information about past climatic conditions, paleoproductivity, past hypolimnetic anoxia, aeolian input, volcanic eruptions, earthquake and flood frequencies, and other variables of environmental relevance. HSI has been applied to study seasonal and inter-annual environmental variability as recorded in individual varves (annually laminated sediments) or to study sedimentary records covering long glacial–interglacial time-scales (>10,000 years).

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“…These include 23 pollen ratio time series reflecting changes in the position of forest boundaries and long-term temperature change. These ratios were computed by the original data generators following methods and rationale described in Jiménez-Moreno et al (2019) and Johnson et al (2013) . The database also includes 20 precipitation records, which were generated by Marsicek et al (2018)…”

Section: Proxy Records and Climate Variablesmentioning

confidence: 99%

A multiproxy database of western North American Holocene paleoclimate records

Routson¹,

Kaufman²,

McKay³

et al. 2020

Preprint

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Abstract. Holocene climate reconstructions are useful for understanding the diverse features and spatial heterogeneity of past and future climate change. Here we present a database of western North American Holocene paleoclimate records. The database gathers paleoclimate time series from 209 terrestrial and marine sites, including 382 individual proxy records. The records span at least 4000 of the last 12 000 years (median duration = 10 603 years), and have been screened for resolution, chronologic control, and climate sensitivity. Records were included that reflect temperature, hydroclimate, or circulation features. The database is shared in the machine readable Linked Paleo Data (LiPD) format and includes geochronologic data for generating site-level time-uncertain ensembles. This publicly accessible and curated collection of proxy paleoclimate records will have wide research applications, including, for example, investigations of the primary features of ocean-atmospheric circulation along the eastern margin of the North Pacific and the latitudinal response of climate to orbital changes. The database is available for download at: https://doi.org/10.6084/m9.figshare.12863843.v1 (Routson and McKay, 2020).

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Forest and lake dynamics in response to temperature, North American monsoon and ENSO variability during the Holocene in Colorado (USA)

Cited by 18 publications

References 100 publications

Historical and prehistorical water levels of Mormon Lake, Arizona as a measure of climate change on the southwest Colorado Plateau, USA

Historical and prehistorical water levels of Mormon Lake, Arizona as a measure of climate change on the southwest Colorado Plateau, USA

Scanning Hyperspectral Imaging for In Situ Biogeochemical Analysis of Lake Sediment Cores: Review of Recent Developments

A multiproxy database of western North American Holocene paleoclimate records

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