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
Using stable isotopes to assess popu...
~
Witteveen, Briana Harmony.
FindBook
Google Book
Amazon
博客來
Using stable isotopes to assess population structure and feeding ecology of North Pacific humpback whales (Megaptera novaeangliae).
紀錄類型:
書目-語言資料,印刷品 : Monograph/item
正題名/作者:
Using stable isotopes to assess population structure and feeding ecology of North Pacific humpback whales (Megaptera novaeangliae)./
作者:
Witteveen, Briana Harmony.
面頁冊數:
144 p.
附註:
Source: Dissertation Abstracts International, Volume: 69-12, Section: B, page: 7334.
Contained By:
Dissertation Abstracts International69-12B.
標題:
Biology, Oceanography. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3341010
ISBN:
9780549960447
Using stable isotopes to assess population structure and feeding ecology of North Pacific humpback whales (Megaptera novaeangliae).
Witteveen, Briana Harmony.
Using stable isotopes to assess population structure and feeding ecology of North Pacific humpback whales (Megaptera novaeangliae).
- 144 p.
Source: Dissertation Abstracts International, Volume: 69-12, Section: B, page: 7334.
Thesis (Ph.D.)--University of Central Florida, 2008.
The North Pacific humpback whale (Megaptera novaeangliae) is a wide-ranging baleen whale species with a complex life history and population structure. As seasonal migrants, humpback whales are known to inhabit cooler, high-latitude waters when foraging and low-latitudes for mating and calving. Beyond this general migratory pattern, a number of demographic characteristics including, abundance, distribution, seasonal occurrence, and prey preferences remain unknown or poorly described. A complete understanding of humpback whale ecology is therefore lacking. Many methods used to explore these aspects of cetacean ecology are either prohibitively expensive or limited in the scope of what can be learned from their use. Fortunately, in recent years, the analysis of stable isotope ratios of animal tissues has proved a valuable and relatively inexpensive technique for providing information on trophic position, diet, and feeding origins of migratory populations. This study employed techniques in stable isotope ecology to increase knowledge of the population structure, migration routes, and foraging ecology of North Pacific humpback whales.
ISBN: 9780549960447Subjects--Topical Terms:
783691
Biology, Oceanography.
Using stable isotopes to assess population structure and feeding ecology of North Pacific humpback whales (Megaptera novaeangliae).
LDR
:04218nam 2200325 4500
001
1397236
005
20110719084832.5
008
130515s2008 ||||||||||||||||| ||eng d
020
$a
9780549960447
035
$a
(UMI)AAI3341010
035
$a
AAI3341010
040
$a
UMI
$c
UMI
100
1
$a
Witteveen, Briana Harmony.
$3
1676053
245
1 0
$a
Using stable isotopes to assess population structure and feeding ecology of North Pacific humpback whales (Megaptera novaeangliae).
300
$a
144 p.
500
$a
Source: Dissertation Abstracts International, Volume: 69-12, Section: B, page: 7334.
500
$a
Adviser: Graham A. J. Worthy.
502
$a
Thesis (Ph.D.)--University of Central Florida, 2008.
520
$a
The North Pacific humpback whale (Megaptera novaeangliae) is a wide-ranging baleen whale species with a complex life history and population structure. As seasonal migrants, humpback whales are known to inhabit cooler, high-latitude waters when foraging and low-latitudes for mating and calving. Beyond this general migratory pattern, a number of demographic characteristics including, abundance, distribution, seasonal occurrence, and prey preferences remain unknown or poorly described. A complete understanding of humpback whale ecology is therefore lacking. Many methods used to explore these aspects of cetacean ecology are either prohibitively expensive or limited in the scope of what can be learned from their use. Fortunately, in recent years, the analysis of stable isotope ratios of animal tissues has proved a valuable and relatively inexpensive technique for providing information on trophic position, diet, and feeding origins of migratory populations. This study employed techniques in stable isotope ecology to increase knowledge of the population structure, migration routes, and foraging ecology of North Pacific humpback whales.
520
$a
Skin samples were collected from free-ranging humpback whales throughout all known feeding and breeding grounds and were analyzed for stable carbon (delta13C) and nitrogen (delta15N) isotope ratios. The population structure of humpback whales was first explored through geographic differences in stable isotope ratios. Stable isotope ratios varied significantly with location of sample collection. Based on this analysis, foraging animals were separated into six feeding groups. Classification tree analysis was then used to determine which isotopic variables could be used to predict group membership. Probable migratory linkages were then described by applying results of classification trees to delta13C and delta 15N of animals sampled on breeding grounds. Strong migratory connections between the eastern-most foraging and breeding areas and the western-most areas were reflected in similarities of stable isotope ratios.
520
$a
Foraging ecology was then examined through calculation and comparison of the relative trophic levels of the six feeding groups. Isotopic values suggest some feeding groups are piscivorous, while others feed on a more mixed diet. These results can be used to determine if differences in diet composition between groups result in differences in accrued nutritional benefits, negatively impacting reproductive success and survival relative to fish eating groups.
520
$a
Finally, to gain insight into specific foraging habits, the diet of one group of humpback whales was modeled using an isotope mixing model. The delta 13C and delta15N of Kodiak Island, Alaska humpback whales and several species of potential prey indicate that these animals likely rely heavily on euphausiids (Thysanoessa spinifera), Pacific sandlance (Ammodytes hexapterus), and capelin (Mallotus villosus).
520
$a
This study represents the first application of stable isotope ecology to an entire population of marine mammals. Stable isotope analysis was successfully applied to describe and improve understanding of the demographics of North Pacific humpback whales.
590
$a
School code: 0705.
650
4
$a
Biology, Oceanography.
$3
783691
650
4
$a
Biology, Zoology.
$3
1018632
690
$a
0416
690
$a
0472
710
2
$a
University of Central Florida.
$3
1018467
773
0
$t
Dissertation Abstracts International
$g
69-12B.
790
1 0
$a
Worthy, Graham A. J.,
$e
advisor
790
$a
0705
791
$a
Ph.D.
792
$a
2008
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3341010
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
W9160375
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