語系:
繁體中文
English
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
The Salmon River estuary: Restoring ...
~
Gray, Ayesha.
FindBook
Google Book
Amazon
博客來
The Salmon River estuary: Restoring tidal inundation and tracking ecosystem response.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
The Salmon River estuary: Restoring tidal inundation and tracking ecosystem response./
作者:
Gray, Ayesha.
面頁冊數:
189 p.
附註:
Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 2921.
Contained By:
Dissertation Abstracts International66-06B.
標題:
Biology, Ecology. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3178142
ISBN:
9780542177170
The Salmon River estuary: Restoring tidal inundation and tracking ecosystem response.
Gray, Ayesha.
The Salmon River estuary: Restoring tidal inundation and tracking ecosystem response.
- 189 p.
Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 2921.
Thesis (Ph.D.)--University of Washington, 2005.
The Salmon River estuary offered a unique opportunity to simultaneously evaluate several estuarine restoration projects and make comparisons with a reference, undiked portion of the estuary. Dikes installed in three locations in the estuary during the early 1960s were removed in 1978, 1987 and 1996 creating a "space-for-time substitution" chronosequence. I analyzed marsh community response to assess development state of three recovering marshes and make comparisons with the reference. During spring and summer from 1998--2002, I assessed juvenile salmon habitat development by comparing wild Oncorhynchus tshawytscha (Chinook salmon) density, diet composition and modeled growth potential among marshes. I also explored differences in invertebrate abundance and composition among marshes, and determined repeatable and exclusive indicators to marsh age. In my analysis, I applied techniques, such as bioenergetics modeling and indicator analysis, to evaluate ecosystem development. A bioenergetics model was used to compare growth potential with site-specific diet composition and temperature, estuary-specific prey energy, average fish size and calculated consumption rates. Modeled growth potential was positive, ranged from 0.001--0.07 g/g/d, and was unrelated to marsh age. Growth rates approximating the reference were found in the newest restoration site with higher variability. Density and taxonomic richness of benthic macroinvertebrates was related to marsh age, but unrelated to marsh surface insects. Invertebrate communities were also compared among marshes. Benthic communities in the 1996 marsh were different from all other marshes, and insect communities were distinct by site except for several cases when no difference between the reference and the 1978 marsh was found. Using indicator analysis I determined several reliable indicators of marsh age, including Staphylinidae (rove beetles) and Chironomidae larvae (midge flies) in the 1996 marsh. Insect communities were more affected by landscape positioning than benthic communities, but tracking both, and evaluating the key indicators of community response was the most informative for describing and assessing recovery state across marsh conditions. The range of metrics I used to track ecosystem development at the Salmon River estuary provided broad indication as to the state of ecosystem re-development after restoring tidal inundation and revealed differences among the marshes related to landscape position and marsh age.
ISBN: 9780542177170Subjects--Topical Terms:
1017726
Biology, Ecology.
The Salmon River estuary: Restoring tidal inundation and tracking ecosystem response.
LDR
:03503nmm 2200301 4500
001
1823950
005
20061128084438.5
008
130610s2005 eng d
020
$a
9780542177170
035
$a
(UnM)AAI3178142
035
$a
AAI3178142
040
$a
UnM
$c
UnM
100
1
$a
Gray, Ayesha.
$3
1913044
245
1 4
$a
The Salmon River estuary: Restoring tidal inundation and tracking ecosystem response.
300
$a
189 p.
500
$a
Source: Dissertation Abstracts International, Volume: 66-06, Section: B, page: 2921.
500
$a
Co-Chairs: Charles A. Simenstad; Robert C. Wissmar.
502
$a
Thesis (Ph.D.)--University of Washington, 2005.
520
$a
The Salmon River estuary offered a unique opportunity to simultaneously evaluate several estuarine restoration projects and make comparisons with a reference, undiked portion of the estuary. Dikes installed in three locations in the estuary during the early 1960s were removed in 1978, 1987 and 1996 creating a "space-for-time substitution" chronosequence. I analyzed marsh community response to assess development state of three recovering marshes and make comparisons with the reference. During spring and summer from 1998--2002, I assessed juvenile salmon habitat development by comparing wild Oncorhynchus tshawytscha (Chinook salmon) density, diet composition and modeled growth potential among marshes. I also explored differences in invertebrate abundance and composition among marshes, and determined repeatable and exclusive indicators to marsh age. In my analysis, I applied techniques, such as bioenergetics modeling and indicator analysis, to evaluate ecosystem development. A bioenergetics model was used to compare growth potential with site-specific diet composition and temperature, estuary-specific prey energy, average fish size and calculated consumption rates. Modeled growth potential was positive, ranged from 0.001--0.07 g/g/d, and was unrelated to marsh age. Growth rates approximating the reference were found in the newest restoration site with higher variability. Density and taxonomic richness of benthic macroinvertebrates was related to marsh age, but unrelated to marsh surface insects. Invertebrate communities were also compared among marshes. Benthic communities in the 1996 marsh were different from all other marshes, and insect communities were distinct by site except for several cases when no difference between the reference and the 1978 marsh was found. Using indicator analysis I determined several reliable indicators of marsh age, including Staphylinidae (rove beetles) and Chironomidae larvae (midge flies) in the 1996 marsh. Insect communities were more affected by landscape positioning than benthic communities, but tracking both, and evaluating the key indicators of community response was the most informative for describing and assessing recovery state across marsh conditions. The range of metrics I used to track ecosystem development at the Salmon River estuary provided broad indication as to the state of ecosystem re-development after restoring tidal inundation and revealed differences among the marshes related to landscape position and marsh age.
590
$a
School code: 0250.
650
4
$a
Biology, Ecology.
$3
1017726
650
4
$a
Environmental Sciences.
$3
676987
650
4
$a
Agriculture, Fisheries and Aquaculture.
$3
1020913
690
$a
0329
690
$a
0768
690
$a
0792
710
2 0
$a
University of Washington.
$3
545923
773
0
$t
Dissertation Abstracts International
$g
66-06B.
790
1 0
$a
Simenstad, Charles A.,
$e
advisor
790
1 0
$a
Wissmar, Robert C.,
$e
advisor
790
$a
0250
791
$a
Ph.D.
792
$a
2005
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3178142
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9214813
電子資源
11.線上閱覽_V
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入