# Dewar fire data from Valle Santa Rosa, Jemez Mountains - IMPD USVSR001
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#                World Data Service for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#             National Centers for Environmental Information (NCEI)
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# Template Version 4.0
# Encoding: UTF-8
# NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. 
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# Description/Documentation lines begin with #
# Data lines have no #
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# NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/37778
#   Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata.
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# Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-fire-37778.json
#   Study_Level_JSON_Description: JSON metadata of this file's parent study, which includes all study metadata.
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# Data_Type: Fire History
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# Dataset_DOI:
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# Science_Keywords: 
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# Resource_Links
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# Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usvsr001.fhx
#   Data_Download_Description: Data - Fire History Exchange File (FHX); Valle Santa Rosa Fire Scar Data 
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# Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usvsr001-noaa.txt
#   Data_Download_Description: Metadata - NOAA Template File; Valle Santa Rosa Fire Scar Metadata
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# Contribution_Date
#   Date: 2022-08-24
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# File_Last_Modified_Date
#   Date: 2023-03-28
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# Title
#   Study_Name: Dewar fire data from Valle Santa Rosa, Jemez Mountains - IMPD USVSR001
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# Investigators
#   Investigators: Dewar, Jacqueline, J.; Falk, Donald, A. (https://orcid.org/0000-0003-3873-722X); Baisan, C.H. (https://orcid.org/0000-0002-7362-1591); Margolis, Ellis, Q. (https://orcid.org/0000-0002-0595-9005)
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# Description_Notes_and_Keywords
#   Description: 
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# This dataset was contributed as part of the North American Tree-ring Fire Scar Synthesis (NAFSS) project (https://www.ncei.noaa.gov/access/paleo-search/study/34853). Data were contributed to the project from the original data generators.
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# Sample Storage Location: Laboratory of Tree-Ring, University of Arizona
# Dating Method: Dated
# Related ITRDB_Chronology: Not Applicable
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# Fire scar data from this site are available in FHX2 format at:
#   https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usvsr001.fhx
# along with associated metadata at:
#   https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usvsr001-noaa.txt
# 
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# Funding_Agency 
#   Funding_Agency_Name:
#   Grant:
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# Publication 
#   Authors: Dewar, J.J.; Falk, D.A.; Swetnam, T.W.; Baisan, C.H.; Allen C.D.; Parmenter, R.R.; Margolis, E.Q.; Taylor, E.J.
#   Published_Date_or_Year: 2021
#   Published_Title: Valleys of fire: historical fire regimes of forest-grassland ecotones across the montane landscape of the Valles Caldera National Preserve, New Mexico, USA
#   Journal_Name: Landscape Ecology
#   Volume: 36
#   Edition: 
#   Issue: 
#   Pages: 331-352
#   Report_Number: 
#   DOI: 10.1007/s10980-020-01101-w
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#   Abstract: 
# Objectives
# We aimed to demonstrate the efficacy of using grassland-forest ecotone trees to reconstruct spatial and temporal properties of the historical fire regime in a complex landscape of montane forests and adjacent grasslands.
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# Methods
# We sampled and crossdated fire-scarred trees along ecotones and compared variations in historical fire occurrence within and among nine adjoining valle basins in a 10,158 ha landscape. We analyzed fire year extensiveness, climate regulation, and the occurrence of consecutive fire years.
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# Results
# The resulting tree-ring record covers 1240-2005 AD, with 296 trees recording 125 replicated fire years during the analysis period 1601-1902 AD. Mean fire intervals for all events recorded on two or more trees ranged from 4.7 to 13.6 years in individual valles, and a mean of 2.4±1.7 (SD) years at the landscape scale. Between 1660 and 1902, extensive fires occurring in six or more valles occurred 15 times, on average at ~17-year intervals; 29 moderately widespread fires (3–5 valles) occurred during this period, at 8.7 year intervals on average. Widespread events occurred in years with a significantly lower Palmer Drought Severity Index (PDSI) preceded by years of significantly positive PDSI, indicating conditions favorable for fine fuel production. Spatial reconstruction of fire extent revealed multiple occurrences of consecutive-year fires burning non-overlapping areas, associated with persistent low PDSI anomalies preceded by positive conditions in antecedent years.
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# Conclusions
# A landscape spatiotemporal approach to reconstructing fire regimes of montane forest-grassland complexes provides a valuable baseline for guiding prescribed and natural fire management at large spatial scales.
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# Site_Information
#   Site_Name: Valle Santa Rosa - IMPD USVSR001
#   Location: North America>United States Of America>New Mexico
#   Northernmost_Latitude: 35.94213417
#   Southernmost_Latitude: 35.94213417
#   Easternmost_Longitude: -106.5178444
#   Westernmost_Longitude: -106.5178444
#   Elevation_m: 2654
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# Data_Collection
#   Collection_Name: USVSR001
#   First_Year: 1240
#   Last_Year: 2005
#   Time_Unit: CE
#   Core_Length_m: 
#   Parameter_Keywords: fire scar dates
#   Notes: 
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# Species 
#   Species_Name: Pinus ponderosa Douglas ex C. Lawson
#   Common_Name: ponderosa pine
#   Common_Name: western yellow pine
#   Tree_Species_Code: PIPO
#   Tree_Species_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/templates/tree-species-code.csv
#   Tree_Species_Download_Description: List of accepted tree species names and codes.
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# Species 
#   Species_Name: Pseudotsuga menziesii (Mirb.) Franco
#   Common_Name: Douglas-fir
#   Tree_Species_Code: PSME
#   Tree_Species_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/templates/tree-species-code.csv
#   Tree_Species_Download_Description: List of accepted tree species names and codes.
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# Chronology Information: 
# Chronology:
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# Variables
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# PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/PaST-thesaurus/SKOS/past-thesaurus-v1.0.rdf
#   PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format.
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#   Short_name	what,material,error,units,seasonality,data_type,detail,method,data_format,additional_information
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## age_ce	age,,,year Common Era,,FIRE HISTORY;TREE RING,,,N,
## tree_events	tree demographic and injury and fire event code,wood,,,,FIRE HISTORY;TREE RING,,,C,FHX2 data format; refer to IMPD documentation for description of codes
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# Data:
# To access data, use Data_Download_Resource links above.