Item talk:Q273667

{

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   "additionalType": "Book Chapter",
   "name": "Late quaternary changes in lakes, vegetation, and climate in the Bonneville Basin reconstructed from sediment cores from Great Salt Lake: Chapter 11",
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       "value": "70187350",
       "url": "https://pubs.usgs.gov/publication/70187350"
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       "value": 70187350
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       "propertyID": "DOI",
       "value": "10.1016/B978-0-444-63590-7.00011-1",
       "url": "https://doi.org/10.1016/B978-0-444-63590-7.00011-1"
     }
   ],
   "inLanguage": "en",
   "datePublished": "2016",
   "dateModified": "2017-05-01",
   "abstract": "Sediment cores from Great Salt Lake (GSL) provide the basis for reconstructing changes in lakes, vegetation, and climate for the last ~\u00a040\u00a0cal\u00a0ka. Initially, the coring site was covered by a shallow saline lake and surrounded by Artemisia steppe or steppe-tundra under a cold and dry climate. As Lake Bonneville began to rise (from ~\u00a030 to 28\u00a0cal\u00a0ka), Pinus and subalpine conifer pollen percentages increased and Artemisia declined, suggesting the onset of wetter conditions. Lake Bonneville oscillated near the Stansbury shoreline between ~\u00a026 and ~\u00a024\u00a0cal\u00a0ka, rose to the Bonneville shoreline by ~\u00a018\u00a0cal\u00a0ka, and then fell to the Provo shoreline, which it occupied until ~\u00a015\u00a0cal\u00a0ka. Vegetation changed during this time span, albeit not always with the same direction or amplitude as the lake. The pollen percentages of Pinus and subalpine conifers were high from ~\u00a025 to 21.5\u00a0cal\u00a0ka, indicating cool and moist conditions during the Stansbury oscillation and for much of the rise toward the Bonneville shoreline. Pinus percentages then decreased and Artemisia became codominant, suggesting drier and perhaps colder conditions from ~\u00a021 to ~\u00a015\u00a0cal\u00a0ka, when Lake Bonneville was at or near its highest levels.Lake Bonneville declined to a low level by ~\u00a013\u00a0cal\u00a0ka, while Pinus pollen percentages increased, indicating that conditions remained cooler and moister than today. During the Younger Dryas interval, the brief Gilbert episode rise in lake level was followed by a shallow lake with a stratified water column. This lake rise occurred as Pinus pollen percentages were declining and those of Artemisia were rising (reflecting increasingly dry conditions), after which Artemisia pollen was at very high levels (suggesting cold and dry conditions) for a brief period.Since ~\u00a010.6\u00a0cal\u00a0ka lacustrine conditions have resembled those of present-day GSL. Pollen spectra for the period from ~\u00a010.6 to 7.2\u00a0cal\u00a0ka have low levels of conifer pollen and high (for the Holocene) levels of desert and steppe taxa, suggesting generally dry conditions with maximum aridity occurring prior to the deposition of the Mazama tephra (~\u00a07.6\u00a0cal\u00a0ka). After ~\u00a010.6\u00a0cal\u00a0ka, Juniperus pollen percentages began to increase and by ~\u00a07.2\u00a0cal\u00a0ka juniper woodlands were well established on lower mountain slopes. From ~\u00a07 to 4\u00a0cal\u00a0ka, pollen percentages fluctuated near their mean values for the entire Holocene. The neopluvial (~\u00a04 to 2\u00a0cal\u00a0ka) was the wettest part of the Holocene, with higher levels of Juniperus pollen and lower levels for steppe and desert taxa than in older Holocene sediments. Pollen percentages for the last ~\u00a02\u00a0cal\u00a0ka are variable, but generally indicate a return to drier conditions.",
   "description": "71 p.",
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     "name": "Elsevier"
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   "author": [
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       "name": "Oviatt, Charles G.",
       "givenName": "Charles G.",
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       "name": "Honke, Jeffrey S. jhonke@usgs.gov",
       "givenName": "Jeffrey S.",
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       "name": "Thompson, Robert S. rthompson@usgs.gov",
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