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國家或地區 美國
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學名 Ursus maritimus Phipps, 1774
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年 始於 2000 終於 2023
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{
"type": "and",
"predicates": [
{
"type": "equals",
"key": "COUNTRY",
"value": "US",
"matchCase": false
},
{
"type": "equals",
"key": "TAXON_KEY",
"value": "2433451",
"matchCase": false
},
{
"type": "and",
"predicates": [
{
"type": "greaterThanOrEquals",
"key": "YEAR",
"value": "2000",
"matchCase": false
},
{
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"value": "2023",
"matchCase": false
}
]
}
]
}
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229Marine mammal aerial surveys in the Bering, Chukchi and Beaufort Seas 1979-2010
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167USGS Alaska Science Center Polar Bear Maternal Dens
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72iNaturalist Research-grade Observations
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65UAM Mammal Collection (Arctos)
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39Arctic Species Trend Index (ASTI) : Marine
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10NatureServe Network Species Occurrence Data
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4Macaulay Library Audio and Video Collection
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3MSB Mammal Collection (Arctos)
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3Lamont-Doherty/LGL/NSF cruises
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2DMNS Mammal Collection (Arctos)
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2Observation.org, Nature data from around the World
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1Museum of Comparative Zoology, Harvard University
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1CMNH Mammals
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1UAM Earth Sciences Collection (Arctos)