Item talk:Q310246

{

 "USGS Publications Warehouse": {
   "@context": "https://schema.org",
   "@type": "Article",
   "additionalType": "Journal Article",
   "name": "Assessing relative abundance and reproductive success of shrubsteppe raptors",
   "identifier": [
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse IndexID",
       "value": "1015826",
       "url": "https://pubs.usgs.gov/publication/1015826"
     },
     {
       "@type": "PropertyValue",
       "propertyID": "USGS Publications Warehouse Internal ID",
       "value": 1015826
     }
   ],
   "journal": {
     "@type": "Periodical",
     "name": "Journal of Field Ornithology",
     "volumeNumber": "69",
     "issueNumber": "2"
   },
   "inLanguage": "en",
   "isPartOf": [
     {
       "@type": "CreativeWorkSeries",
       "name": "Journal of Field Ornithology"
     }
   ],
   "datePublished": "1998",
   "dateModified": "2012-02-02",
   "abstract": "From 1991-1994, we quantified relative abundance and reproductive success of\r\nthe Ferruginous Hawk (Buteo regalis), Northern Harrier (Circus cyaneus), Burrowing Owl\r\n(Speotytoc unicularia), and Short-eared Owl (Asio flammeus) on the shrubsteppe plateaus\r\n(benchlands) in and near the Snake River Birds of Prey National Conservation Area in\r\nsouthwestern Idaho. To assess relative abundance, we searched randomly selected plots using\r\nfour sampling methods: point counts, line transects, and quadrats of two sizes. On a persampling-effort basis, transects were slightly more effective than point counts and quadrats\r\nfor locating raptor nests (3.4 pairs detected/100 h of effort vs. 2.2-3.1 pairs). Random sampling using quadrats failed to detect a Short-eared Owl population increase from 1993 to\r\n1994. To evaluate nesting success, we tried to determine reproductive outcome for all nesting\r\nattempts located during random, historical, and incidental nest searches. We compared nesting\r\nsuccess estimates based on all nesting attempts, on attempts found during incubation,\r\nand the Mayfield model. Most pairs used to evaluate success were pairs found incidentally.\r\nVisits to historical nesting areas yielded the highest number of pairs per sampling effort\r\n(14.6/100 h), but reoccupancy rates for most species decreased through time. Estimates\r\nbased on all attempts had the highest sample sizes but probably overestimated success for\r\nall species except the Ferruginous Hawk. Estimates of success based on nesting attempts\r\nfound during incubation had the lowest sample sizes. All three methods yielded biased nesting\r\nsnccess estimates for the Northern Harrier and Short-eared Owl. The estimate based on\r\npairs found during incubation probably provided the least biased estimate for the Burrowing\r\nOwl. Assessments of nesting success were hindered by difficulties in confirming egg laying\r\nand nesting success for all species except the Ferruginous hawk.",
   "description": "p. 244-256",
   "publisher": {
     "@type": "Organization",
     "name": "U.S. Geological Survey"
   },
   "author": [
     {
       "@type": "Person",
       "name": "Kochert, Michael N. mkochert@usgs.gov",
       "givenName": "Michael N.",
       "familyName": "Kochert",
       "email": "mkochert@usgs.gov",
       "identifier": {
         "@type": "PropertyValue",
         "propertyID": "ORCID",
         "value": "0000-0002-4380-3298",
         "url": "https://orcid.org/0000-0002-4380-3298"
       },
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Forest and Rangeland Ecosystem Science Center",
           "url": "https://www.usgs.gov/centers/forest-and-rangeland-ecosystem-science-center"
         },
         {
           "@type": "Organization",
           "name": "Forest and Rangeland Ecosys Science Center",
           "url": "https://www.usgs.gov/centers/forest-and-rangeland-ecosystem-science-center"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Steenhof, Karen karen_steenhof@usgs.gov",
       "givenName": "Karen",
       "familyName": "Steenhof",
       "email": "karen_steenhof@usgs.gov",
       "affiliation": [
         {
           "@type": "Organization",
           "name": "Forest and Rangeland Ecosys Science Center",
           "url": "https://www.usgs.gov/centers/forest-and-rangeland-ecosystem-science-center"
         }
       ]
     },
     {
       "@type": "Person",
       "name": "Lehman, Robert N.",
       "givenName": "Robert N.",
       "familyName": "Lehman"
     },
     {
       "@type": "Person",
       "name": "Carpenter, L.B.",
       "givenName": "L.B.",
       "familyName": "Carpenter"
     }
   ],
   "funder": [
     {
       "@type": "Organization",
       "name": "Forest and Rangeland Ecosystem Science Center",
       "url": "https://www.usgs.gov/centers/forest-and-rangeland-ecosystem-science-center"
     }
   ]
 }

}