Sherilyn C Fritz

Datos Biográficos

ID110516
NOMBRESherilyn C Fritz
NOMBRESSherilyn C
APELLIDOFritz
FIRMAFRITZ S C
AFILIACIONESUniversity of Nebraska–Lincoln
ORCID0000-0002-4423-4189
VERIFICADOSí
TOTAL DE OBRAS37
TOTAL DE CITAS90
TOTAL COMO AUTOR37
TOTAL COMO EDITOR0
PRIMER AÑO DE PUBLICACIÓN1994
AÑO MÁS RECIENTE DE PUBLICACIÓN2025
ÍNDICE H5

  • Early Holocene interaction of aeolian, alluvial, and lacustrine processes in a dune-dammed valley in the central Nebraska Sand Hills

    Open AccessGosia Mahoney, Rolfe D Mandel et al.ARTICLEQuaternary Research2025

    The stratigraphic record of the Early Holocene in the Nebraska Sand Hills suggests dry climatic conditions and periods of sustained aeolian activity, which resulted in several well-documented instances of sand dunes blocking river drainages in the western Sand Hills. Here, we present evidence that drainage blockage by migrating sand dunes also occurred in the central Sand Hills, where precipitation is higher and dune morphology differs. The South…

  • Fires and drought during the Euro-American settlement period (1850-1950) in the Nebraska Sand Hills

    Open AccessJames V Benes, Paul R Hanson et al.ARTICLEThe Holocene2025Referencias: 17

    The connections among human activity, fire, and drought are examined in this study of historic records and sediment cores collected from six lakes within the Nebraska Sand Hills. We use microscopic charcoal particles from lake sediment cores to reconstruct fire history from ~1800 to 1950 C.E. We also use historical documents and the dates of post office establishment to constrain Euro-American settlement patterns in the regions adjacent to the co…

  • The Rise and Fall of Wiñaymarka

    Open AccessM C Bruno, J M Capriles et al.ARTICLEHuman Ecology2021

  • Impact of Holocene climate change on silicon cycling in Lake 850, Northern Sweden

    Open AccessPetra Zahajská, Rosine Cartier et al.ARTICLEThe Holocene2021Referencias: 8

    Diatom-rich sediment in a small subarctic lake (Lake 850) was investigated in a 9400 cal. yr BP sediment record in order to explore the impact of Holocene climate evolution on silicon cycling. Diatom stable silicon isotopes ([Formula: see text]) and biogenic silica (BSi) indicate that high BSi concentrations in sediment throughout the Holocene are associated with a lighter Si isotope source of dissolved silica (DSi), such as groundwater or freshl…

  • Reconstructing two millennia of copper and silver metallurgy in the Lake Titicaca region (Bolivia/Peru) using trace metals and lead isotopic composition

    Open AccessStéphane Guédron, Guédron et al.ARTICLEAnthropocene2021Citada por: 4Referencias: 66

  • What is diatomite?

    Open AccessPetra Zahajská, Sophie Opfergelt et al.ARTICLEQuaternary Research2020

    Different types of biogenic remains, ranging from siliceous algae to carbonate precipitates, accumulate in the sediments of lakes and other aquatic ecosystems. Unicellular algae called diatoms, which form a siliceous test or frustule, are an ecologically and biogeochemically important group of organisms in aquatic environments and are often preserved in lake or marine sediments. When diatoms accumulate in large numbers in sediments, the fossilize…

  • Lake-level variability in Salar de Coipasa, Bolivia during the past ∼40,000 yr

    Open AccessJames Andrew Nunnery, Sherilyn C Fritz et al.ARTICLEQuaternary Research2019

    Various paleoclimatic records have been used to reconstruct the hydrologic history of the Altiplano, relating this history to past variability of the South American summer monsoon. Prior studies of the southern Altiplano, the location of the world’s largest salt flat, the Salar de Uyuni, and its neighbor, the Salar de Coipasa, generally agree in their reconstructions of the climate history of the past ∼24 ka. Some studies, however, have highly di…

  • IntCal, SHCal, or a Mixed Curve? Choosing a 14 C Calibration Curve for Archaeological and Paleoenvironmental Records from Tropical South America

    Open AccessE J Marsh, M C Bruno et al.ARTICLERadiocarbon2018Citada por: 35Referencias: 79

    Because the 14 C calibration curves IntCal and SHCal are based on data from temperate latitudes, it remains unclear which curve is more suitable for archaeological and paleoenvironmental records from tropical South America. A review of climate dynamics reveals a significant influx of Northern Hemisphere air masses and moisture over a substantial part of the continent during the South American Summer Monsoon (SASM). Areas affected by the SASM rece…

  • A ~6000 yr diatom record of mid- to late Holocene fluctuations in the level of Lago Wiñaymarca, Lake Titicaca (Peru/Bolivia)

    Open AccessD Marie Weide, Sherilyn C Fritz et al.ARTICLEQuaternary Research2017

    A multidecadal-scale lake-level reconstruction for Lago Wiñaymarca, the southern basin of Lake Titicaca, has been generated from diatom species abundance data. These data suggest that ~6500 cal yr BP Lago Wiñaymarca was dry, as indicated by a sediment unconformity. At ~4400 cal yr BP, the basin began to fill, as indicated by the dominance of shallow epiphytic species. It remained somewhat saline with extensive wetlands and abundant aquatic plants…

  • In Memoriam

    Open AccessCathy Whitlock, Julie K Stein et al.ARTICLEQuaternary Research2016

  • Lake Kumphawapi revisited – The complex climatic and environmental record of a tropical wetland in NE Thailand

    Open AccessSakonvan Chawchai, Kweku Afrifa Yamoah et al.ARTICLEThe Holocene2015Citada por: 2Referencias: 15

    Kumphawapi, which is Thailand’s largest natural freshwater lake, contains a >10,000-year-long climatic and environmental archive. New data sets (stratigraphy, chronology, hydrogen isotopes, plant macrofossil and charcoal records) for two sedimentary sequences are here combined with earlier multi-proxy studies to provide a comprehensive reconstruction of past climatic and environmental changes for Northeast Thailand. Gradually higher moisture avai…

  • The influence of basin morphometry on the regional coherence of patterns of diatom-inferred salinity in lakes of the northern Great Plains (USA)

    Open AccessCourtney R Wigdahl, Jasmine E Saros et al.ARTICLEThe Holocene2014Referencias: 3

    Sedimentary diatom profiles from saline lakes are frequently used to reconstruct lakewater salinity as an indicator of drought. However, diatom-inferred salinity (DI-salinity) reconstructions from geographically proximal sites in the Great Plains (USA) have yielded disparate results. This study explores how physical changes in lake habitat resulting from drought may affect climate inferences from salinity reconstructions. Differences in relations…

  • Synchronous climatic change inferred from diatom records in four western Montana lakes in the U.S. Rocky Mountains

    Open AccessBrandi Bracht-Flyr, Sherilyn C FritzARTICLEQuaternary Research2012

    Late-Holocene environmental and climatic conditions were reconstructed from diatom assemblages in sediment cores from four western Montana lakes: Crevice Lake, Foy Lake, Morrison Lake, and Reservoir Lake. The lakes show synchroneity in timing of shifts in diatom community structure, but the nature of these changes differs among the lakes. Two of the sites provide highly resolved records of hydrologic balance, while the other two stratigraphic seq…

  • Holocene variability in hydrology, vegetation, fire, and eolian activity in the Nebraska Sand Hills, USA

    Open AccessJens Schmieder, Sherilyn C Fritz et al.ARTICLEThe Holocene2012Citada por: 4Referencias: 9

    This study combined multiple aquatic and terrestrial proxies, including diatoms, pollen, grain size, and bulk-sediment chemistry to reconstruct the history of three lake sites located in the central Sand Hills of Nebraska, USA. Long-term changes in effective moisture are evident at all sites, with significant changes occurring at ~6000, ~4000, and ~ 2000 cal. yr BP. Both aquatic and terrestrial indicators suggest that effective moisture was low b…

  • Environmental history of a closed-basin lake in the US Great Plains

    Open AccessWilliam O Hobbs, Sherilyn C Fritz et al.ARTICLEThe Holocene2011Citada por: 1Referencias: 5

    Sediment records from closed-basin lakes in the Northern Great Plains (NGP) of North America have contributed significantly to our understanding of regional paleoclimatology. A high-resolution (near decadal) fossil diatom record from Kettle Lake, ND, USA that spans the last 8500 cal. yr BP is interpreted in concert with percent abundance of aragonite in the sediment as an independent proxy of groundwater flow to the lake (and thus lake water leve…

  • Past, recent, and future climate-change impacts on hydrologic and environmental variability in selected regions of Asia

    Open AccessSherilyn C Fritz, Peter GellARTICLEQuaternary International2010

  • Palaeohydrology of Kangerlussuaq (Søndre Strømfjord), West Greenland during the last ~8000 years

    Open AccessFrank A Aebly, Sherilyn C FritzARTICLEThe Holocene2009Referencias: 7

    Major fluctuations of hydroclimate in West Greenland are recorded in palaeoshoreline terraces that encircle several lakes near Kangerlussuaq, Greenland (67°01′N, 50°40′W). Geomorphic and stratigraphic analyses were used to construct a lake-level curve for Hunde Sø, a large closed-basin lake in this region. Changes in lake volume associated with lake-level fluctuations were calculated, and a water-balance model was used to determine the primary fa…

  • A diatom record of late Holocene climate variation in the northern range of Yellowstone National Park, USA

    Open AccessBrandi B Bracht, Jeffery R Stone et al.ARTICLEQuaternary International2008

  • Holocene multidecadal- to millennial-scale hydrologic variability on the South American Altiplano

    Open AccessErik J Ekdahl, Sherilyn C Fritz et al.ARTICLEThe Holocene2008Citada por: 3Referencias: 3

    Precipitation on the South American Altiplano varies at a range of temporal scales. A long-term secular increase in moisture availability from the early/mid Holocene to the present, driven by increasing summer insolation resulting from precessional changes in the Earth's orbit, has been documented in earlier studies. However, higher frequency Holocene variability is not yet understood. Here we present high-resolution diatom assemblage data from t…

  • Lacustrine evidence for moisture changes in the Nebraska Sand Hills during Marine Isotope Stage 3

    Open AccessKimberly C Jacobs, Sherilyn C Fritz et al.ARTICLEQuaternary Research2007

    In the central Great Plains of North America, loess stratigraphy suggests that climate during the late Pleistocene was cold and dry. However, this record is discontinuous, and there are few other records of late-Pleistocene conditions. Cobb Basin, located on the northern edge of the Nebraska Sand Hills, contains lacustrine sediments deposited during Marine Isotope Stage 3, beginning approximately 45,000 cal yr BP and continuing for at least 10,00…

  • Quaternary glaciation and hydrologic variation in the South American tropics as reconstructed from the Lake Titicaca drilling project

    Open AccessSherilyn C Fritz, Paul A Baker et al.ARTICLEQuaternary Research2007

    A 136-m-long drill core of sediments was recovered from tropical high-altitude Lake Titicaca, Bolivia-Peru, enabling a reconstruction of past climate that spans four cycles of regional glacial advance and retreat and that is estimated to extend continuously over the last 370,000 yr. Within the errors of the age model, the periods of regional glacial advance and retreat are concordant respectively with global glacial and interglacial stages. Perio…

  • A 2200-yr record of hydrologic variability from Foy Lake, Montana, USA, inferred from diatom and geochemical data

    Open AccessLora R Stevens, Lora Stevens et al.ARTICLEQuaternary Research2006

    A 2200-yr long, high-resolution (∼5 yr) record of drought variability in northwest Montana is inferred from diatoms and δ 18 O values of bio-induced carbonate preserved in a varved lacustrine core from Foy Lake. A previously developed model of the diatom response to lake-level fluctuations is used to constrain estimates of paleolake levels derived from the diatom data. High-frequency (decadal) fluctuations in the de-trended δ 18 O record mirror v…

  • Vegetation and climate change on the Bolivian Altiplano between 108,000 and 18,000 yr ago

    Open AccessAlex Chepstow-Lusty, Alex Chepstow‐lusty et al.ARTICLEQuaternary Research2005

    A 90,000-yr record of environmental change before 18,000 cal yr B.P. has been constructed using pollen analyses from a sediment core obtained from Salar de Uyuni (3653 m above sea level) on the Bolivian Altiplano. The sequence consists of alternating mud and salt, which reflect shifts between wet and dry periods. Low abundances of aquatic species between 108,000 and 50,000 yr ago (such as Myriophyllum and Isoëtes ) and marked fluctuations in Pedi…

  • Holocene palaeoecology along the Blekinge coast, SE Sweden, and implications for climate and sea-level changes

    Open AccessShi-Yong Yu, Shi‐yong Yu et al.ARTICLEThe Holocene2005Citada por: 4Referencias: 15

    To investigate the Holocene vegetation history and shoreline displacement along the southeastern Swedish coast, two radiocarbon dated pollen, macrofossil and mineral magnetic sequences were studied in the western Blekinge coast: Hunnemara Lake and Smygen Bay. Both pollen records show mosaic vegetation with grasslands, heaths and woodlands prior to 11 300 cal. BP. Pinus-dominated mixed forest was initially established by 11 000 cal. BP. By 10 000 …

  • Hydrologic variation during the last 170,000 years in the southern hemisphere tropics of South America

    Open AccessSherilyn C Fritz, Paul A Baker et al.ARTICLEQuaternary Research2004

    Despite the hypothesized importance of the tropics in the global climate system, few tropical paleoclimatic records extend to periods earlier than the last glacial maximum (LGM), about 20,000 years before present. We present a well-dated 170,000-year time series of hydrologic variation from the southern hemisphere tropics of South America that extends from modern times through most of the penultimate glacial period. Alternating mud and salt units…