東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Large wood aids Chinook salmon (Onco...

University of California, Davis.

FindBook

Google Book

Amazon

博客來

Large wood aids Chinook salmon (Oncorhynchus tshawytscha ) spawning in marginal habitat on a regulated river in California.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Large wood aids Chinook salmon (Oncorhynchus tshawytscha ) spawning in marginal habitat on a regulated river in California./
Author:	Senter, Anne Elizabeth.
Description:	82 p.
Notes:	Adviser: Gregory B. Pasternack.
Contained By:	Masters Abstracts International47-05.
Subject:	Agriculture, Fisheries and Aquaculture. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=1463451
ISBN:	9781109082791

Large wood aids Chinook salmon (Oncorhynchus tshawytscha ) spawning in marginal habitat on a regulated river in California.
Senter, Anne Elizabeth.

Large wood aids Chinook salmon (Oncorhynchus tshawytscha ) spawning in marginal habitat on a regulated river in California. - 82 p.

Adviser: Gregory B. Pasternack.

Thesis (M.S.)--University of California, Davis, 2008.

Key Words: large wood, gravel rivers, Chinook salmon, ecohydraulics, fluvial geomorphology, river rehabilitation

ISBN: 9781109082791Subjects--Topical Terms:

1020913
Agriculture, Fisheries and Aquaculture.

Large wood aids Chinook salmon (Oncorhynchus tshawytscha ) spawning in marginal habitat on a regulated river in California.
LDR:02529nam 2200301 a 45 001 854595
005 20100706
008 100706s2008 ||||||||||||||||| ||eng d
020 $a 9781109082791
035 $a (UMI)AAI1463451
035 $a AAI1463451
040 $a UMI $c UMI
100 1 $a Senter, Anne Elizabeth. $3 1021012
245 1 0 $a Large wood aids Chinook salmon (Oncorhynchus tshawytscha ) spawning in marginal habitat on a regulated river in California.
300 $a 82 p.
500 $a Adviser: Gregory B. Pasternack.
500 $a Source: Masters Abstracts International, Volume: 47-05, page: .
502 $a Thesis (M.S.)--University of California, Davis, 2008.
520 $a Key Words: large wood, gravel rivers, Chinook salmon, ecohydraulics, fluvial geomorphology, river rehabilitation
520 $a To determine whether large wood (LW, ≥1 m length, ≥10 cm diameter) plays a role in Chinook salmon redd (i.e. egg nests) placements in a regulated, medium-sized, Mediterranean-climate river, characteristics of 542 large wood pieces, locations of 650 redds, and habitat unit delineations (riffle, run, glide, pool) were collected during a spawning season along a 7.7 km reach directly below Camanche Dam on the Mokelumne River (average width 31 m). Large wood was regularly distributed across the study reach with an average of 70 LW pieces km-1. Some LW clustering was evident at islands. Chinook spawners built 75% of observed redds at spawning habitat rehabilitation sites, and 85% of redds were within one average channel width of large wood. At the hydraulic scale of &sim;101 channel widths, redds were within a 10-m radius of large wood 36% of the time. These results suggest that spawners had the opportunity to utilize large wood as cover and refugia. In the lower 4.7 km where marginal habitat was prevalent, redds were within a 5-m radius of large wood 21% of the time and within a 2.5 m radius 10% of the time, indicating use of the hydraulic properties of instream large wood structures. Results from randomized tests indicate that large wood-redd interactions systematically occurred at a greater rate than by random chance alone in the lower 4.7 km, but not in the upper 3 km, which implies that large wood aids spawning in marginal habitats.
590 $a School code: 0029.
650 4 $a Agriculture, Fisheries and Aquaculture. $3 1020913
650 4 $a Hydrology. $3 545716
650 4 $a Physical Geography. $3 893400
690 $a 0368
690 $a 0388
690 $a 0792
710 2 $a University of California, Davis. $3 1018682
773 0 $t Masters Abstracts International $g 47-05.
790 $a 0029
790 1 0 $a Pasternack, Gregory B., $e advisor
791 $a M.S.
792 $a 2008
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=1463451