Item talk:Q228169

{

 "@context": "http://schema.org/",
 "@type": "WebPage",
 "additionalType": "Project",
 "url": "https://www.usgs.gov/centers/alaska-science-center/science/winter-habitat-juvenile-dolly-varden-canning-river",
 "headline": "Winter Habitat of Juvenile Dolly Varden in the Canning River",
 "datePublished": "May 6, 2019",
 "author": [
   {
     "@type": "Person",
     "name": "Vanessa von Biela, Ph.D.",
     "url": "https://www.usgs.gov/staff-profiles/vanessa-von-biela",
     "identifier": {
       "@type": "PropertyValue",
       "propertyID": "orcid",
       "value": "0000-0002-7139-5981"
     }
   },
   {
     "@type": "Person",
     "name": "Michael P Carey, Ph.D.",
     "url": "https://www.usgs.gov/staff-profiles/michael-p-carey",
     "identifier": {
       "@type": "PropertyValue",
       "propertyID": "orcid",
       "value": "0000-0002-3327-8995"
     }
   }
 ],
 "description": [
   {
     "@type": "TextObject",
     "text": "The number of fish living in Alaska\u2019s Arctic rivers is thought to be capped by the availability of freshwater that does not freeze as ice creating overwintering habitat. This project is specifically focused on identifying places where young Dolly Varden char (Salvelinus malma; also called Arctic char or Iqalukpik) overwinter. Large springs in the Brooks Range are key spawning and overwintering habitat for adult char, but the smaller, younger fish may need to avoid these areas so that hungry adults do not eat them. At the same time, char cannot survive in the ocean\u2019s cold winter temperatures. Thus, we expect that young fish seek out deeper pools or areas with small springs in the lower reaches of the river that provide pockets of overwintering habitat separated by long stretches where the river is frozen to the bottom. We will visit areas that might provide pockets of overwinter habitat in the Canning River in late winter (April) to record fish presence/absence with minnow traps, small mesh nets, hook and line sampling, and an underwater video camera. By identifying the specific places where young Dolly Varden char overwinter, managers will have more information on locations important to the population of Dolly Varden char in making decisions on human activities in and around the river."
   },
   {
     "@type": "TextObject",
     "text": "Return to Wildlife, Fish, and Habitats >> Fish and Aquatic Ecology"
   },
   {
     "@type": "TextObject",
     "text": "In the Arctic, rivers often freeze all the way to the bottom each winter leaving fish with limited habitat where they can survive."
   },
   {
     "@type": "TextObject",
     "text": "All photo credits below: Randy J. Brown, USFWS. Public domain."
   }
 ],
 "funder": {
   "@type": "Organization",
   "name": "Alaska Science Center",
   "url": "https://www.usgs.gov/centers/alaska-science-center"
 },
 "about": [
   {
     "@type": "Thing",
     "name": "Methods and Analysis"
   },
   {
     "@type": "Thing",
     "name": "Fish"
   },
   {
     "@type": "Thing",
     "name": "Information Systems"
   },
   {
     "@type": "Thing",
     "name": "Ecosystems"
   },
   {
     "@type": "Thing",
     "name": "Science Technology"
   },
   {
     "@type": "Thing",
     "name": "Dolly Varden char"
   },
   {
     "@type": "Thing",
     "name": "Energy"
   },
   {
     "@type": "Thing",
     "name": "Arctic char"
   },
   {
     "@type": "Thing",
     "name": "Biology"
   },
   {
     "@type": "Thing",
     "name": "Environmental Health"
   },
   {
     "@type": "Thing",
     "name": "Arctic"
   },
   {
     "@type": "Thing",
     "name": "Iqalukpik"
   },
   {
     "@type": "Thing",
     "name": "Water"
   },
   {
     "@type": "Thing",
     "name": "Geology"
   }
 ]

}