東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Life History and Population Dynamics...

Chen, Emily Katherine,

Linked to FindBook

Google Book

Amazon

博客來

Life History and Population Dynamics of Chinook Salmon in the Central Valley /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Life History and Population Dynamics of Chinook Salmon in the Central Valley // Emily Katherine Chen.
Author:	Chen, Emily Katherine,
Description:	1 electronic resource (101 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
Contained By:	Dissertations Abstracts International86-03B.
Subject:	Environmental science. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31491324
ISBN:	9798384455271

Life History and Population Dynamics of Chinook Salmon in the Central Valley /
Chen, Emily Katherine,

Life History and Population Dynamics of Chinook Salmon in the Central Valley /Emily Katherine Chen. - 1 electronic resource (101 pages)

Source: Dissertations Abstracts International, Volume: 86-03, Section: B.

The complex and seasonal landscape of the California Central Valley produces a mosaic of habitat niches for Chinook salmon (Oncorhynchus tshawytscha) to occupy. Diversity in life history enables Chinook salmon to widely distribute across habitats and over time, reducing competition and hedging against environmental disturbances, resulting in overall more abundant and stable populations. Human activity including habitat alteration and resource extraction can eliminate ecological niches available to Chinook salmon and reduce their life history diversity. Maintaining this important element in the face of natural resource demands and climate change requires understanding how human activities influence life history expression and the various life history types. Hatcheries artificially producing salmon to supplement natural populations are pervasive in the Central Valley. Practices during the breeding, rearing, and release process can result in trait divergence between hatchery and natural-origin salmon. Trait differences can result in differential impacts from human activity and potentially bias inferences drawn directly from hatchery fish data for managing the natural or combined population. Throughout the dissertation, I compared the life history of hatchery- and natural-origin fish and evaluated how their distinct traits could influence impact from human activity. For each chapter, I explored how life history shapes population dynamics and affects assessment tools used in managing Chinook salmon. In Chapter 1, I found that natural-origin Sacramento River winter-run Chinook salmon use the basin far more extensively than hatchery-origin fish when migrating to the ocean and have greater habitat needs than what would be suggested from hatchery fish data alone. In Chapter 2, I found winter-run hatchery fish return from the ocean to spawn at earlier and more homogenous ages, which suggests natural-origin fish may be more impacted by ocean fisheries because of their later maturation ages. In Chapter 3, I found trends in maturation schedules for Sacramento River fall-run Chinook salmon over time have contributed to forecast error in management models used to guide harvest policies. Overall, this dissertation demonstrates that understanding life history diversity and population dynamics can help natural resource managers make well-informed and cost-effective decisions that maintain the integrity and long-term persistence of threatened salmon populations.

English

ISBN: 9798384455271Subjects--Topical Terms:

677245
Environmental science.
Subjects--Index Terms:

Hatchery

Life History and Population Dynamics of Chinook Salmon in the Central Valley /
LDR:03986nmm a22004453i 4500 001 2428598
005 20250414021907.5
006 m o d
007 cr|nu||||||||
008 261011s2024 miu||||||m |||||||eng d
020 $a 9798384455271
035 $a (MiAaPQD)AAI31491324
035 $a AAI31491324
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Chen, Emily Katherine, $e author. $3 3815921
245 1 0 $a Life History and Population Dynamics of Chinook Salmon in the Central Valley / $c Emily Katherine Chen.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 1 electronic resource (101 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
500 $a Advisors: Carlson, Stephanie M. Committee members: Grantham, Theodore E.; Boettiger, Carl; Satterthwaite, William H.
502 $b Ph.D. $c University of California, Berkeley $d 2024.
520 $a The complex and seasonal landscape of the California Central Valley produces a mosaic of habitat niches for Chinook salmon (Oncorhynchus tshawytscha) to occupy. Diversity in life history enables Chinook salmon to widely distribute across habitats and over time, reducing competition and hedging against environmental disturbances, resulting in overall more abundant and stable populations. Human activity including habitat alteration and resource extraction can eliminate ecological niches available to Chinook salmon and reduce their life history diversity. Maintaining this important element in the face of natural resource demands and climate change requires understanding how human activities influence life history expression and the various life history types. Hatcheries artificially producing salmon to supplement natural populations are pervasive in the Central Valley. Practices during the breeding, rearing, and release process can result in trait divergence between hatchery and natural-origin salmon. Trait differences can result in differential impacts from human activity and potentially bias inferences drawn directly from hatchery fish data for managing the natural or combined population. Throughout the dissertation, I compared the life history of hatchery- and natural-origin fish and evaluated how their distinct traits could influence impact from human activity. For each chapter, I explored how life history shapes population dynamics and affects assessment tools used in managing Chinook salmon. In Chapter 1, I found that natural-origin Sacramento River winter-run Chinook salmon use the basin far more extensively than hatchery-origin fish when migrating to the ocean and have greater habitat needs than what would be suggested from hatchery fish data alone. In Chapter 2, I found winter-run hatchery fish return from the ocean to spawn at earlier and more homogenous ages, which suggests natural-origin fish may be more impacted by ocean fisheries because of their later maturation ages. In Chapter 3, I found trends in maturation schedules for Sacramento River fall-run Chinook salmon over time have contributed to forecast error in management models used to guide harvest policies. Overall, this dissertation demonstrates that understanding life history diversity and population dynamics can help natural resource managers make well-informed and cost-effective decisions that maintain the integrity and long-term persistence of threatened salmon populations.
546 $a English
590 $a School code: 0028
650 4 $a Environmental science. $3 677245
650 4 $a Ecology. $3 516476
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Conservation biology. $3 535736
653 $a Hatchery
653 $a Life history
653 $a Population dynamics
653 $a Chinook salmon
653 $a Central Valley
690 $a 0768
690 $a 0329
690 $a 0408
690 $a 0792
710 2 $a University of California, Berkeley. $b Environmental Science, Policy, & Management. $e degree granting institution. $3 3815922
720 1 $a Carlson, Stephanie M. $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 86-03B.
790 $a 0028
791 $a Ph.D.
792 $a 2024
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31491324