January 27th,
2005: Lower Fraser Sturgeon Monitoring Summary 2004
Follow-up report of previous
summary. From Troy Nelson, Fraser River Sturgeon Conservation
Society:
Greetings,
In celebration of PIT tag number 20,000 deployed
in the same number of live white sturgeon since the start of the
FRSCS' Lower Fraser River White Sturgeon Monitoring and Assessment
Program, I have attached a sampling summary
of sturgeon sampled, tags applied, recaptured, and lengths for the
study that commenced in October 1999, through 31 Dec 2004.
Some of the remarkable achievements of the program
include:
20,015 tags released (in the "head" location)
by program volunteers.
4,696 of these tags recaptured.
27,932 individual sturgeon sampled (scanned for the presence of
a PIT tag).
These high sample sizes provide the means to estimate the population
of lower Fraser white sturgeon with high precision.
Here's another statistic that sings of the efforts
applied by our team:
2.8 million centimeters of sturgeon measured. That's
over 28 kms of sturgeon sampled! Imagine a line of sturgeon - each
nose in the tail fork of the sturgeon in front - that stretches
up the middle of the Fraser River from the Mission Bridge to the
Island 22 boat launch. That is the length of sturgeon we have sampled
in the past 5 years.
In addition, high numbers of the tagged fish are
being recaptured multiple times, sometimes in locations many kms
from the last previous capture event. One fish has been captured
by our crew 7 times (6 recapture events) - some fish never learn!
On behalf of the FRSCS Board of Directors, thanks
to all everyone on all the teams that have kept this project moving
onward and upward. It's a program of which we can all be proud.
Troy C. Nelson
Resource Management Biologist
LGL Limited environmental research associates
Executive Director
Fraser River Sturgeon Conservation Society
Mailing Address:
3299 137A Street
Crescent Beach, BC V4P 2B5
CANADA
Phone: 604-535-1768
Fax: 604-535-1769
Cell: 604-720-9768
Email: tnelson@lgl.com
www.lgl.com
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