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

FindBook

Google Book

Amazon

博客來

A Global Ecological Signal of Extinction Risk in Marine Ray-Finned Fishes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Global Ecological Signal of Extinction Risk in Marine Ray-Finned Fishes./
作者:	Bak, Trevor.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2022,
面頁冊數:	37 p.
附註:	Source: Masters Abstracts International, Volume: 84-01.
Contained By:	Masters Abstracts International84-01.
標題:	Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29215596
ISBN:	9798834043621

A Global Ecological Signal of Extinction Risk in Marine Ray-Finned Fishes.
Bak, Trevor.

A Global Ecological Signal of Extinction Risk in Marine Ray-Finned Fishes. - Ann Arbor : ProQuest Dissertations & Theses, 2022 - 37 p.

Source: Masters Abstracts International, Volume: 84-01.

Thesis (M.S.)--University of Hawai'i at Hilo, 2022.

This item must not be sold to any third party vendors.

The Earth is potentially entering a sixth mass extinction event comparable to the previous "big five" mass extinctions. Many marine fish species are currently facing rapid population declines from a broad range of threat types, but their extinction risk profiles are largely under-studied in comparison to their terrestrial counterparts. Selective extinction of increasing numbers of marine fish species may result in rapid alteration of global ocean ecosystem structure and function. In this study, we compiled a data set of 9,040 species of marine ray-finned fishes (class Actinopterygii) from global databases and used phylogenetic generalized linear models to examine which ecological traits are associated with increased extinction risk, based on the International Union for the Conservation of Nature (IUCN) Red List. We also assessed which threat types are driving these species towards greater extinction risk, if threatened species face a greater average number of total threat types than non-threatened species, and possible biases in the assignment of extinction risk status by the IUCN for each ecological variable. Further, we examined whether controlling for phylogenetic non-independence alters the general conclusions drawn from our study. We found that species with larger body size, longer population doubling times, life-history strategies that involve movement into brackish and/or freshwater, and pelagic species are all at elevated extinction risk. However, we found no significant difference in extinction risk based on trophic level. Commercial harvesting threatens the greatest number of species followed by pollution, development, and then climate change. We also found that threatened species, on average, simultaneously face a significantly greater total number of threat types than non-threatened species. We did identify relatively minor biases in the assignment of extinction risk status by the IUCN Red List across all traits and we further determined that controlling for phylogenetic non-independence does not strongly affect our general conclusions. Collectively, these results point to which ecological traits place marine ray-finned fishes at higher risk of extinction and which threat types most urgently need to be addressed if we are to curtail rapid alteration of global marine ecosystems.

ISBN: 9798834043621Subjects--Topical Terms:

516476
Ecology.
Subjects--Index Terms:

Extinction risk

A Global Ecological Signal of Extinction Risk in Marine Ray-Finned Fishes.
LDR:03411nmm a2200349 4500 001 2348315
005 20220908123029.5
008 241004s2022 ||||||||||||||||| ||eng d
020 $a 9798834043621
035 $a (MiAaPQ)AAI29215596
035 $a AAI29215596
040 $a MiAaPQ $c MiAaPQ
100 1 $a Bak, Trevor. $3 3687649
245 1 0 $a A Global Ecological Signal of Extinction Risk in Marine Ray-Finned Fishes.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2022
300 $a 37 p.
500 $a Source: Masters Abstracts International, Volume: 84-01.
500 $a Advisor: Knope, Matthew.
502 $a Thesis (M.S.)--University of Hawai'i at Hilo, 2022.
506 $a This item must not be sold to any third party vendors.
520 $a The Earth is potentially entering a sixth mass extinction event comparable to the previous "big five" mass extinctions. Many marine fish species are currently facing rapid population declines from a broad range of threat types, but their extinction risk profiles are largely under-studied in comparison to their terrestrial counterparts. Selective extinction of increasing numbers of marine fish species may result in rapid alteration of global ocean ecosystem structure and function. In this study, we compiled a data set of 9,040 species of marine ray-finned fishes (class Actinopterygii) from global databases and used phylogenetic generalized linear models to examine which ecological traits are associated with increased extinction risk, based on the International Union for the Conservation of Nature (IUCN) Red List. We also assessed which threat types are driving these species towards greater extinction risk, if threatened species face a greater average number of total threat types than non-threatened species, and possible biases in the assignment of extinction risk status by the IUCN for each ecological variable. Further, we examined whether controlling for phylogenetic non-independence alters the general conclusions drawn from our study. We found that species with larger body size, longer population doubling times, life-history strategies that involve movement into brackish and/or freshwater, and pelagic species are all at elevated extinction risk. However, we found no significant difference in extinction risk based on trophic level. Commercial harvesting threatens the greatest number of species followed by pollution, development, and then climate change. We also found that threatened species, on average, simultaneously face a significantly greater total number of threat types than non-threatened species. We did identify relatively minor biases in the assignment of extinction risk status by the IUCN Red List across all traits and we further determined that controlling for phylogenetic non-independence does not strongly affect our general conclusions. Collectively, these results point to which ecological traits place marine ray-finned fishes at higher risk of extinction and which threat types most urgently need to be addressed if we are to curtail rapid alteration of global marine ecosystems.
590 $a School code: 1418.
650 4 $a Ecology. $3 516476
650 4 $a Aquatic sciences. $3 3174300
653 $a Extinction risk
653 $a Global
653 $a Marine fishes
653 $a Modern biodiversity crisis
690 $a 0329
690 $a 0792
710 2 $a University of Hawai'i at Hilo. $b Tropical Conservation Biology & Environmental Science. $3 3182877
773 0 $t Masters Abstracts International $g 84-01.
790 $a 1418
791 $a M.S.
792 $a 2022
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29215596