@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/5f3ca90f-4279-448c-bd06-7d2d0917a6e7> a dcat:Dataset ;
    dct:description """Carbon and oxygen isotope data from annual tree rings in Ponderosa Pine collected in Oregon.  The data was used in 
Ulrich, D. E. M., C. J. Still, J. R. Brooks, Y. Kim, and F. C. Meinzer. 2019. Investigating old-growth ponderosa pine physiology using tree-rings, δ13C, δ18O, and a process-based model. Ecology 100:e02656. 

This dataset is associated with the following publication:
Ulrich, D.E.M., C. Still, J.R. Brooks, Y. Kim, and F. Meinzer. Investigating old-growth ponderosa pine physiology using tree-rings, δ13C, δ18O, and a process-based model.   ECOLOGY. Ecological Society of America, Ithaca, NY, USA, 100(6): e02656, (2019).""" ;
    dct:identifier <https://doi.org/10.23719/1416745> ;
    dct:issued "2025-11-22T02:20:38.389671"^^xsd:dateTime ;
    dct:modified "2019-07-22"^^xsd:date ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:title "Ponderosa Pine Tree Ring Stable Isotopes, Oregon" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Jacqueline Brooks" ;
            vcard:hasEmail <mailto:brooks.reneej@epa.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/5f3ca90f-4279-448c-bd06-7d2d0917a6e7/resource/441f1a01-8028-411b-9402-2716af0d9f1e> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ckan",
        "dendrochronoloy",
        "geo",
        "geoss",
        "national",
        "north-america",
        "plant-physiology",
        "stable-isotopes",
        "tree-growth",
        "tree-ring-chronologies",
        "united-states" .

<https://data.amerigeoss.org/dataset/5f3ca90f-4279-448c-bd06-7d2d0917a6e7/resource/441f1a01-8028-411b-9402-2716af0d9f1e> a dcat:Distribution ;
    dct:description "Brooks%20Metolius%20Treering%20Isotopes%20Data.xlsx" ;
    dct:format "XLS" ;
    dct:issued "2020-11-12T13:46:18.390822"^^xsd:dateTime ;
    dct:modified "2025-11-22T02:20:38.381788"^^xsd:dateTime ;
    dct:title "Brooks Metolius Treering Isotopes Data.xlsx" ;
    dcat:accessURL <https://pasteur.epa.gov/uploads/10.23719/1416745/Brooks%20Metolius%20Treering%20Isotopes%20Data.xlsx> ;
    dcat:mediaType "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .