Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
GED
Devil's Hole , DVNM, Ash Meadows, Nye Co.,
Nevada
18 July 1967
J.E. Deacox, Jim Tener, Steve James)
Arrived at about 0600 hrs. and set three vertical
lines (of 5, 4, 4 straps) spaced at 10' intervals in the
deep end [CSS comment - see map for placement of
traplines. All traps except top traps at each line
are weighted and rest on the shelf.] and 5[weighted]
traps near the bottom on the shelf. Light readings
were taken and a water sample for chemical
analysis. Water level at 0630 hrs. was 1.86 on
the scale. The oxygen probe was placed in the
water at 0645 hrs.
Many fish could be seen on the shelf -
probably ca 200 with all sizes represented except
the very tiny ones which I did not look for.
Juveniles were seen.
Steve James picked two bats out of the water,
and I saw several bees get trapped in the water.
This may represent a significant energy source
to the environment along with the several insects
that also get trapped here.
Steve James and Jim Tener stayed to
measure trapped fish and seine and dip net
additional specimens. We captured 22 fish in
the bottom trap in the middle line (ca 36' in depth)
[~27'] and one fish in the bottom trap of the
vertical line nearest the shelf in ca 36' of water.
Jim and Steve measured a total of 35 fish and