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

Climate anomalies and primary produc...

Dijkstra, Marcel L.

FindBook

Google Book

Amazon

博客來

Climate anomalies and primary production in Lake Superior.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Climate anomalies and primary production in Lake Superior./
作者:	Dijkstra, Marcel L.
面頁冊數:	172 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.
Contained By:	Dissertation Abstracts International76-12B(E).
標題:	Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3724615
ISBN:	9781339081502

Climate anomalies and primary production in Lake Superior.
Dijkstra, Marcel L.

Climate anomalies and primary production in Lake Superior. - 172 p.

Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.

Thesis (Ph.D.)--Michigan Technological University, 2015.

This item is not available from ProQuest Dissertations & Theses.

This dissertation supports the modeling of primary production in Lake Superior by offering site specific kinetics and algorithms developed from lab experiments performed on the natural phytoplankton assemblage of Lake Superior. Functions, developed for temperature, light and nutrient conditions and the maximum specific rate of primary production, were incorporated in a 1D specific primary production model and confirmed to published in-situ measured rates of primary production.

ISBN: 9781339081502Subjects--Topical Terms:

516476
Ecology.

Climate anomalies and primary production in Lake Superior.
LDR:04600nmm a2200349 4500 001 2115235
005 20170217105133.5
008 180830s2015 ||||||||||||||||| ||eng d
020 $a 9781339081502
035 $a (MiAaPQ)AAI3724615
035 $a AAI3724615
040 $a MiAaPQ $c MiAaPQ
100 1 $a Dijkstra, Marcel L. $3 3276875
245 1 0 $a Climate anomalies and primary production in Lake Superior.
300 $a 172 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.
500 $a Adviser: Martin T. Auer.
502 $a Thesis (Ph.D.)--Michigan Technological University, 2015.
506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a This dissertation supports the modeling of primary production in Lake Superior by offering site specific kinetics and algorithms developed from lab experiments performed on the natural phytoplankton assemblage of Lake Superior. Functions, developed for temperature, light and nutrient conditions and the maximum specific rate of primary production, were incorporated in a 1D specific primary production model and confirmed to published in-situ measured rates of primary production.
520 $a An extensive data set (supporting model calibration and confirmation), with a fine spatiotemporal resolution, was developed from field measurements taken bi-weekly during the sampling seasons of 2011, 2012 and 2014; considered to be meteorologically average, extremely warm and cold years, respectively. Samplings were taken at 11 stations along a 26 km transect extending lakeward from Michigan's Keweenaw Peninsula covering the nearshore to offshore gradient. Measurements included: temperature, solar radiation, transparency, beam attenuation, chlorophyll-a fluorescence, colored dissolved organic matter, suspended solids and phosphorus and carbon constituents. Based on these measurements and application of the developed primary production model, patterns in primary production and driving forces (i.e. temperature, light and nutrients) are described in a seasonal, spatial, and interannual fashion.
520 $a The signal feature in 2011 was the development of a mid-summer "desert" in the offshore surface waters (a period of suboptimal temperatures coincident with a high degree of phosphorus limitation). The manifestation of the "summer desert", however, was most extreme during the warm year and nonexistent during the cold year. Offshore primary production in all years manifested a subsurface maximum in the upper area of the metalimnion, distinctly above the deep chlorophyll maximum, with rates of production xiv being highest in 2011 (&sim;20 mg C m-3 d-1) followed by 2012 (&sim;17 mg Cm-3 d-1) and lowest in 2014 (&sim;12 mg Cm-3 d-1). Driven by variances in biomass and forcing conditions, offshore areal primary production manifested differences in seasonal patterns between years as well. In 2011 and 2014 a negatively skewed bell-shape pattern was observed, differing in magnitude and timing. The pattern in 2012 differed from these years in magnitude and timing, manifesting elevated production in April and decreased production in September. Greatest areal production in 2012 occurred in July and August (&sim;320 mg Cm -2 d-1), in 2014 in August (&sim;265 mg Cm-2 d-1) and in 2011 production was greatest in July (253 mg C m-2 d-1). Areal production in the summer of 1998, calculated for EPA's 19 offshore stations in Lake Superior, manifested comparable rates and averaged 224 +/- 90 mg C m-2·d -1.
520 $a Although in all years the development of the thermal bar (TB) occurred after the spring runoff event, an increase in chlorophyll-a concentration during the presence of the TB was observed in 2012. Rates of primary production during this period, however, decreased while the opposite occurred in 2014, signifying that changes in chlorophyll-a concentration should be interpreted carefully (especially if used to identify spring blooms).
520 $a The information presented in this work not only offers site specific kinetics, appropriate algorithms in support of primary production modeling and an extensive dataset supporting model calibration and confirmation, it also offers new insights into the dynamics of the Lake Superior ecosystem and the forces driving its function.
590 $a School code: 0129.
650 4 $a Ecology. $3 516476
650 4 $a Environmental engineering. $3 548583
650 4 $a Biogeochemistry. $3 545717
690 $a 0329
690 $a 0775
690 $a 0425
710 2 $a Michigan Technological University. $b Civil and Environmental Engineering. $3 2104584
773 0 $t Dissertation Abstracts International $g 76-12B(E).
790 $a 0129
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3724615