Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
Beaver
1967
Oysters
Study 40
1 July
(30 June) Steve M. and I went out to Beach Ridge - where
met tangle feet trap area, and we set up
3 Emergence traps. I called this line one and
traps #1, 2 and 3.
Trap #1 was set on a low, south sloping area
of Beach Ridge that consisted of 75% grass
and a heavy moss understory. The soil is wet.
Trap #2 - was placed on a higher portion of
the ridge to the north of trap #1. The ground cover
was 100% grass.
Trap #3 - was placed on the top of Beach Ridge.
The grass here is short - 75% cover, moss
understory - 100% - dense.
The second site for the emergence traps was
Central marsh on Beach Ridge. I called this
line two, traps #1, 2 and 3.
Trap #1 was placed on a area in central marsh
having standing water, 75% grass and a dense
moss understory.
Trap #2 was placed on the south sloping portion
of Beach Ridge at this locality. 50% grass, moss
understory sparse. Mud in places. Soil almost dry.