Michael Fj Pisaric

Dados Biográficos

ID1542322
NOMEMichael Fj Pisaric
PRENOMESMichael Fj
SOBRENOMEPisaric
ASSINATURAPISARIC M F
AFILIAÇÕESBrock University
ORCID0000-0003-3806-8986
VERIFICADOSim
TOTAL DE OBRAS13
TOTAL DE CITAÇÕES22
TOTAL COMO AUTOR13
TOTAL COMO EDITOR0
PRIMEIRO ANO DE PUBLICAÇÃO2003
ANO MAIS RECENTE DE PUBLICAÇÃO2025
ÍNDICE H2

  • High-resolution analysis of the varved succession at Crawford lake across the base of the proposed Crawfordian stage and Anthropocene series

    Open AccessFrancine Mg Mccarthy, Robert T Patterson et al.ARTICLEThe Anthropocene Review2025Citada por: 3Referências: 39

    Four years after the Anthropocene Working Group (AWG) voted to work toward defining the Anthropocene series/epoch with a base in the mid-20th C, the varved sediments of Crawford Lake (Milton, ON, Canada) were selected as the Global boundary Stratotype Section and Point (GSSP) candidate. The initial major rise in activity of 239 + 240 Pu had been selected as the primary chronostratigraphic marker to define the base of the Anthropocene, but the pre…

  • The varved succession of Crawford Lake, Milton, Ontario, Canada as a candidate Global boundary Stratotype Section and Point for the Anthropocene series

    Open AccessFrancine Mg Mccarthy, Robert T Patterson et al.ARTICLEThe Anthropocene Review2023Citada por: 17Referências: 41

    An annually laminated succession in Crawford Lake, Ontario, Canada is proposed for the Global boundary Stratotype Section and Point (GSSP) to define the Anthropocene as a series/epoch with a base dated at 1950 CE. Varve couplets of organic matter capped by calcite precipitated each summer in alkaline surface waters reflect environmental change at global to local scales. Spheroidal carbonaceous particles and nitrogen isotopes record an increase in…

  • Tracking local radiocarbon releases from nuclear power plants in southern Ontario (Canada) using annually-dated tree-ring records

    Open AccessFelix Vogel, Carley Crann et al.ARTICLEAnthropocene2022Referências: 37

    Understanding the radiocarbon (14C) content of atmospheric carbon dioxide (CO2) underlies many fields of research. This study shows how one can track the influence of nuclear power plants at the local and regional scale in Canada's largest urban area. This area is subject to significant 14CO2 depletion due to CO2 emissions from fossil fuel burning. Tree cores collected across southern Ontario in 2018 show that tree-rings dated annually record the…

  • Paleoclimatology

    Open AccessMichael Fj Pisaric, Michael F J PisaricCHAPTERInternational Encyclopedia of…2017

    The Earth's climate has constantly evolved and changed throughout its 4.8 billion‐year history. During most of the Earth's history, climate has been characterized as hyperthermal, punctuated by cool periods during the Neoproterozoic, late Ordovician, early Permian, late Jurassic, and from the early Eocene to the present. These broad changes in climate occurred in response to a number of internal and external‐forcing mechanisms, including changes …

  • Determinants of fire activity during the last 3500 yr at a wildland—urban interface, Alberta, Canada

    Open AccessEmma Lou Davis, C J Courtney Mustaphi et al.ARTICLEQuaternary Research2016

    Long-term records of wildfires and their controlling factors are important sources of information for informing land management practices. Here, dendrochronology and lake sediment analyses are used to develop a 3500-yr fire and vegetation history for a montane forest in Jasper National Park, Alberta, Canada. The tree-ring record (AD 1771-2012) indicates that this region historically experienced a mixed-severity fire regime, and that effective fir…

  • Do bark beetle remains in lake sediments correspond to severe outbreaks? A review of published and ongoing research

    Open AccessJesse L Morris, C J Courtney Mustaphi et al.ARTICLEQuaternary International2015

  • Paleoecological and Sedimentological Data from

    Open AccessC J Courtney Mustaphi, Ze’ev Gedalof et al.ARTICLEOpen Quaternary2015Referências: 8

    This dataset contains sedimentological and paleoenvironmental measurements from a 351.5 cm sediment core that was collected from Pyatts Lake, south-east British Columbia, Canada. Sedimentological data include: radiocarbon dates and age-depth model, magnetic susceptibility, loss-on-ignition values, and particle size distributions. Palaeoecological data include: macroscopic charcoal (>150 μm), charcoal morphotypes; aquatic macroremains; pollen spec…

  • Holocene climate–fire–vegetation interactions at a subalpine watershed in southeastern British Columbia, Canada

    Open AccessC J Courtney Mustaphi, Michael Fj Pisaric et al.ARTICLEQuaternary Research2014

    Vegetation assemblages and associated disturbance regimes are spatially heterogeneous in mountain ecosystems throughout the world due to the complex terrain and strong environmental gradients. Given this complexity, numerous sites describing postglacial vegetation and fire histories are needed to adequately understand forest development and ecosystem responses to varying climate and disturbance regimes. To gain insight into long-term historical c…

  • A ring-width-based reconstruction of June–July minimum temperatures since AD 1245 from white spruce stands in the Mackenzie Delta region, northwestern Canada

    Open AccessTrevor J Porter, Michael Fj Pisaric et al.ARTICLEQuaternary Research2013

    We present a reconstruction of June–July minimum temperatures since AD 1245 for the Mackenzie Delta region based on a 29-site network of white spruce ( Picea glauca ) ring-width series. Most but not all trees experienced a divergent temperature–growth response, similar to the divergence that has affected other white spruce trees across Yukon and Alaska. However, divergence in the study region began as early as AD 1900 and we have documented our m…

  • Using Multiple Sources of Knowledge to Investigate Northern Environmental Change

    Open AccessSteve V Kokelj, T C Lantz et al.ARTICLEARCTIC2012

    Field data, remote sensing, and Inuvialuit knowledge were synthesized to document regional ecological change in the outer Mackenzie Delta and to explore the timing, causes, and implications of this phenomenon. In September 1999, a large magnitude storm surge inundated low-lying areas of the outer Mackenzie Delta. The storm was among the most intense on record and resulted in the highest water levels ever measured at the delta front. Synthesis of …

  • Arctic coastal freshwater ecosystem responses to a major saltwater intrusion

    Open AccessJoshua R Thienpont, Daniel Johnson et al.ARTICLEThe Holocene2012Citada por: 1

    Because of decreasing sea-ice extent and increasingly frequent Arctic storms, low-lying coastal ecosystems are at heightened risk from marine storm surges. A major Arctic storm event originating in the Beaufort Sea in September 1999 resulted in the flooding of a large area of the outer alluvial plain of the Mackenzie Delta (Northwest Territories, Canada), and has been previously shown to have caused unprecedented impacts on the terrestrial ecosys…

  • Environmental Change and Traditional Use of the Old Crow Flats in Northern Canada

    Open AccessBrent B Wolfe, Murray M Humphries et al.ARTICLEARCTIC2011

  • Holocene treeline dynamics in the mountains of northeastern British Columbia, Canada, inferred from fossil pollen and stomata

    Open AccessMichael Fj Pisaric, Michael F J Pisaric et al.ARTICLEThe Holocene2003Citada por: 1Referências: 6

    Changes in pollen and stomata assemblages in sediment cores recovered from tundra and foresttundra lakes in alpine regions of northeastern British Columbia reflect vegetation and inferred climatic change throughout the Holocene. Pollen and stomata records are presented from two lakes, BC2 located in the alpinetundra zone and Dead Spruce Lake at the present elevation of subalpine treeline. The pollen and stomata records from BC2 indicate that an e…