Abundance and composition of Arctic grayling in the Delta Clearwater River, 1998
Our rough guess is there are 17,250 words in this book.
At a pace averaging 250 words per minute, this book will take 1 hours and 9 minutes to read. With a half hour per day, this will take 2 days to read.
How long will it take you?
This book will take an estimated to read at a reading speed averaging words per minute. With 30 minutes per day, this will take to read.
Enter your reading speedYou can take one of our WPM reading speed tests to find your reading speed.
Create a free account to track your reading progress, build your reading list, and set reading goals.
Author
Contributions
- Alaska. Division of Sport Fish. - Contributor
Publication
1999 - Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services, Anchorage, Alaska
Language
English
Word Count
17,250 words, Guess
Page Count
69 pages
Identifiers
- Open LibraryOL15558605M
Classifications
- LCCSH11 .A7542 no. 99-40
Alternate Titles
- Federal aid in sport fish restoration (Alaska)
Description
A mark-recapture experiment was conducted along the lower 14 miles of the Delta Clearwater River over two weeks during the middle of July 1998 to estimate abundance and composition of Arctic grayling Thymallus arcticus. Hook and line methods using jigs, flies, and spinners as terminal gear captured 2,443 fish. Estimated abundance of Arctic grayling 240 mm FL was 5,570 fish (SE = 780). Quality sized and larger fish (270 mm FL) predominated. Age-5 fish are fully recruited to the sampling gear and prior years fisheries. Age-5 fish comprised 30% (SE 2%) of the population 240 mm FL while age-4 and 6 comprised 14% (SE = 2%) each. Jig marked fish had significantly lower capture probabilities than fly marked fish and therefore were excluded from the experiment. A positive bias of 8% resulted when jig marked fish were included in the experiment.
Subjects
Topics
Places
Series Statement
- Fishery data series -- no. 99-40.
Links
Reader Reviews
No reviews yet for this book.
Be the first to share your thoughts!