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

Six thousand years of change in the ...

Misarti, Nicole.

Linked to FindBook

Google Book

Amazon

博客來

Six thousand years of change in the northeast Pacific: An interdisciplinary view of maritime ecosystems.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Six thousand years of change in the northeast Pacific: An interdisciplinary view of maritime ecosystems./
Author:	Misarti, Nicole.
Description:	213 p.
Notes:	Source: Dissertation Abstracts International, Volume: 69-02, Section: A, page: 0647.
Contained By:	Dissertation Abstracts International69-02A.
Subject:	Anthropology, Archaeology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3302507
ISBN:	9780549479338

Six thousand years of change in the northeast Pacific: An interdisciplinary view of maritime ecosystems.
Misarti, Nicole.

Six thousand years of change in the northeast Pacific: An interdisciplinary view of maritime ecosystems. - 213 p.

Source: Dissertation Abstracts International, Volume: 69-02, Section: A, page: 0647.

Thesis (Ph.D.)--University of Alaska Fairbanks, 2007.

The goal of this thesis is to develop long-term records of North Pacific ecosystems and explore relationships between change in marine ecosystems and prehistoric Aleut culture through soil chemistry, isotope analyses of lake cores, and isotope analyses of bone from archaeological middens. Chemical analysis of soils yielded differences in soils of various archaeological features as well as middens of varying composition. Sites that had no middens were chemically distinguishable from sites that did have middens helping to define resource consumption in the local region. An important result of this study is that no single ecosystem (nearshore benthic, coastal pelagic or deep-ocean pelagic) experienced the same changes in delta13C and delta 15N over the past 4,500 years. This suggests that changes in climate affected different ecosystems in unique ways. Only one change spans all species studied, the decrease in modern delta13C in comparison to delta13C of prehistoric specimens. According to these comparisons, the modern Gulf of Alaska may not be in the highly productive state that it was for the past 4,500 years, with the possible exception of the Medieval Warm Period. Lake core sediment analysis suggests an increase in salmon stocks in the Gulf of Alaska beginning &sim;6,000 years ago, with a decrease during the Medieval Warm Period. In fact, salmon stocks in the Gulf of Alaska appear to be healthiest during periods of atmospheric cooler and wetter climate over the past 4,500 years. In comparing my paleoecological records to the archaeological record of the area it appears that humans were affected by changes in their environment but, even in relatively small numbers, humans also influenced local ecosystems for the past 6,000 years. By building on our understanding of long-term climate change and long-term fluctuations in ecosystems and trophic dynamics of species in the North Pacific, and through considering humans in the ecological context, we can better understand present conditions in marine ecosystems.

ISBN: 9780549479338Subjects--Topical Terms:

622985
Anthropology, Archaeology.

Six thousand years of change in the northeast Pacific: An interdisciplinary view of maritime ecosystems.
LDR:02980nam 2200289 4500 001 1391686
005 20110120112643.5
008 130515s2007 ||||||||||||||||| ||eng d
020 $a 9780549479338
035 $a (UMI)AAI3302507
035 $a AAI3302507
040 $a UMI $c UMI
100 1 $a Misarti, Nicole. $3 1670133
245 1 0 $a Six thousand years of change in the northeast Pacific: An interdisciplinary view of maritime ecosystems.
300 $a 213 p.
500 $a Source: Dissertation Abstracts International, Volume: 69-02, Section: A, page: 0647.
500 $a Adviser: Bruce Finney.
502 $a Thesis (Ph.D.)--University of Alaska Fairbanks, 2007.
520 $a The goal of this thesis is to develop long-term records of North Pacific ecosystems and explore relationships between change in marine ecosystems and prehistoric Aleut culture through soil chemistry, isotope analyses of lake cores, and isotope analyses of bone from archaeological middens. Chemical analysis of soils yielded differences in soils of various archaeological features as well as middens of varying composition. Sites that had no middens were chemically distinguishable from sites that did have middens helping to define resource consumption in the local region. An important result of this study is that no single ecosystem (nearshore benthic, coastal pelagic or deep-ocean pelagic) experienced the same changes in delta13C and delta 15N over the past 4,500 years. This suggests that changes in climate affected different ecosystems in unique ways. Only one change spans all species studied, the decrease in modern delta13C in comparison to delta13C of prehistoric specimens. According to these comparisons, the modern Gulf of Alaska may not be in the highly productive state that it was for the past 4,500 years, with the possible exception of the Medieval Warm Period. Lake core sediment analysis suggests an increase in salmon stocks in the Gulf of Alaska beginning &sim;6,000 years ago, with a decrease during the Medieval Warm Period. In fact, salmon stocks in the Gulf of Alaska appear to be healthiest during periods of atmospheric cooler and wetter climate over the past 4,500 years. In comparing my paleoecological records to the archaeological record of the area it appears that humans were affected by changes in their environment but, even in relatively small numbers, humans also influenced local ecosystems for the past 6,000 years. By building on our understanding of long-term climate change and long-term fluctuations in ecosystems and trophic dynamics of species in the North Pacific, and through considering humans in the ecological context, we can better understand present conditions in marine ecosystems.
590 $a School code: 0006.
650 4 $a Anthropology, Archaeology. $3 622985
650 4 $a Biology, Oceanography. $3 783691
650 4 $a Engineering, Marine and Ocean. $3 1019064
690 $a 0324
690 $a 0416
690 $a 0547
710 2 $a University of Alaska Fairbanks. $3 718922
773 0 $t Dissertation Abstracts International $g 69-02A.
790 1 0 $a Finney, Bruce, $e advisor
790 $a 0006
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3302507