7419

• UCREFRP Catalog Number: 7419
• Author: Valdez, R. A., et al.
• Title: Summary Documentation and Preliminary SI Curves, SI Curve Development Project.
• USFW Year: 1987.
• USFW - Doc Type: Logan, Utah.
• Copyright Material: NO

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~rts decided the type of data that should be 'USE'Jd for analysis. nus
approach ~ used instecrl of discussing each individual study to insure that a
standard set of cri teria was applied to all datasets, and to reduce the anuunt
of time that it w:ro.ld take to discuss each study in the 23-year span of data.

Results. consensus of the five species e~rts in workshop #1 resulted in
a total of 291 data partitions that were the basis for data ana.lyses tor
p:>ssible category 2 curves. The eJ<PE!rts also identified 48 partitions for
category 1 curve developnent (See Species Dendrograms, Figures B-1 through B-3
and Table B-1 in this Draft Report). A summa.ry of the catagory 1 and 2 curves
identified at ~rkshop #1 is presented in Table B-2.

A list of 21 itans were identified during W=lrkshop #1 as missing informa-
tion fran FWS/DATABASE. A list of these i terns was pre];Bred for the workshop
}Bl'ticipants, and assignments were ma:1e to secure missing data and correct
inconsistencies in the database.

Objective 2: Stratify, Pool, Analvze Data

Methods. In most cases, the five e~rts reached consensus on the type of
data that should be included in analyses for possible c:urve developnent. Where
the ~rts were nncertain, BID/WEST was asked to 'test' or 'decision/test' the
data. If a 'test' ~ specified, the data trere to be pooled if the signifi-
cance level did not exceed 95% (alpha = 0.05), b.1t the partitions \Ere to be
retained if significantly diffel"'ent. HOTrEVer, if the number of sanples (fish
wi th associated habitat measuranents) in one or both partitions of data was
less than 20, the partitions trere autanatically pooled ewer a 'test I . No
pooling was to be performed under a I decision/test I, b.1t the statistics were to
be reported in the Draft Report as a tool for the deCision-making process
during Workshop #2.

Results. The 291 data pa.rtitions identified by the e~rts in Workshop #1
trere tested by BID/WEST in the manner specified, and pooled or partitioned
according to the predetenninad test guidelines. The results of those tests and
the resul tarrt preliminary SI curves are presented in the following section of
this Draft Report.

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