Our new Biological Assessment is out - Klamath Basin Crisis

Klamath Project Operations Biological Assessment
Endangered Suckers: Sucker Description, Life History, Habitat, Distribution, and
Abundance
Shively 2007). Although limited age data on shortnose suckers existed at the time
of listing, length frequency data from the 1980s suggests that this population was
also comprised of older individuals with little evidence of recruitment events
(Janney and Shively 2007, Janney et al. 2007).
Figure 2-3. Abundance index values for adult Lost River suckers and shortnose suckers
captured in trammel nets in the Williamson River, 1995-2000.
Source: Adapted from Cunningham et al. 2002, Fig. 7, p. 29. Data from 1995-1998 are
revised from Perkins et al. (2000 Biology) based on data points that were previously
omitted. Data from 2000 and 2001 are a) from the second set of trammel nets retrieved,
and b) from all trammel nets retrieved. .
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