24 Free Photos of Population Survey

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Biologist in raft during a fish population survey
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During raft biologist
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Surveys are conducted every summer to determine the location and health of the park's American pika population. www.nps.gov/glac/naturescience/ccrlc-citizen-science.htm
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A Delmarva Peninsula fox squirrel in a fabric cone that is used to handle the captured animals during a fox squirrel population survey. Credit: USFWS/Ryan Hagerty
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A Delmarva peninsula fox squirrel in a fabric cone that is used to handle the captured animals during a fox squirrel population survey in November, 2010. The Delmarva peninsula fox squirrel is an enda
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Hydroacoustics vessel the Carpe-See-Um-3
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Hydroacoustics vessel the Carpe-See-Um-5
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Hydroacoustics vessel the Carpe-See-Um-1
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Casey's June beetle survey site
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FWS Biologist Noelle Ronan sets up the survey site
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Collecting data
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Black lights attract male Casey's June beetles
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Casey's June beetles are attracted by the black light
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Measuring the size of the beetle
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Male Casey's June beetle
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FWS Biologist Chris Gregory checks the air temperature
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Casey's June beetle profile
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Counting Samples During Missouri River Population Survey
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Each beetle is marked with a unique color and number combination
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Casey's June beetle and marking
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Casey's June beetle habitat - Palm Springs, CA
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Once marked, the beetle is released back into its habitat
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Tim Hovey, a senior environmental scientist, specialist, with the California Department of Fish and Wildlife (CDFW) removes netting over a container that houses a small population of unarmored threespine sticklebacks at the CDFW's Fillmore Fish Hatchery.
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