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

Understanding the relationships betw...

Hummel, Stephanie Elizabeth.

Linked to FindBook

Google Book

Amazon

博客來

Understanding the relationships between plant communities, fish communities, and sediment chemistry in pristine Shallow Lake Wetlands, Red Lake, MN.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Understanding the relationships between plant communities, fish communities, and sediment chemistry in pristine Shallow Lake Wetlands, Red Lake, MN./
Author:	Hummel, Stephanie Elizabeth.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
Description:	137 p.
Notes:	Source: Dissertation Abstracts International, Volume: 77-10(E), Section: B.
Contained By:	Dissertation Abstracts International77-10B(E).
Subject:	Environmental science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10117162
ISBN:	9781339785653

Understanding the relationships between plant communities, fish communities, and sediment chemistry in pristine Shallow Lake Wetlands, Red Lake, MN.
Hummel, Stephanie Elizabeth.

Understanding the relationships between plant communities, fish communities, and sediment chemistry in pristine Shallow Lake Wetlands, Red Lake, MN. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 137 p.

Source: Dissertation Abstracts International, Volume: 77-10(E), Section: B.

Thesis (Ph.D.)--North Dakota State University, 2016.

Over 90% wetland loss in many areas of the United States has triggered extreme concern for declining biodiversity and loss of ecosystem services. Studies assessing ecological characteristics of unaltered wetlands are critical to interpreting potential responses to anthropogenic changes and how ecosystem characteristics and services might respond to future climate dynamics. Previous research shows fish and plant communities play an important role in shallow lake ecology by creating stability within the clear state. Understanding these mechanisms in a pristine setting is important for successful conservation and restoration. Our objectives, part of a long term monitoring study (2009-2015), were 1) Evaluate patterns in multi-element concentrations of pore water along a gradient from upland areas through emergent vegetation to the open water of shallow lake wetlands 2) Assess seasonal changes of multi-element concentrations of pore water during the growing season of shallow lake wetlands 3) Measure the influence of fish communities species composition on plant communities species composition 4) Evaluate how sediment chemistry impacts plant communities. We evaluated pore water chemistry on two lakes using dialysis vials from June-October 2014. We selected 24 shallow lakes located within Red Lake Nation Indian Reservation, MN, USA to conduct the remaining objectives. At each lake we assessed fish community structure and abundance using fyke nets and experimental gill nets for a 24-hr period during July. Aquatic and emergent vegetation was assessed simultaneously by rake throws and Daubenmire frame, and sediment samples were collected by taking a surface grab sample. Sediment samples were taken in the open water and emergent vegetation zones. Pore water did not change across a gradient from upland to open water, but did change over the season from June to October. We found fish community composition did not change significantly from 2009 to 2015, but fish biomass significantly decreased from 2009 to 2015. No species-specific relationships between vegetation and fish existed, but species specific relationships existed between vegetation and sediment characteristics in both the open water and emergent vegetation zones. Results will be used as reference points for restoration and conservation, and serve for a better understanding of shallow lake state stability.

ISBN: 9781339785653Subjects--Topical Terms:

677245
Environmental science.

Understanding the relationships between plant communities, fish communities, and sediment chemistry in pristine Shallow Lake Wetlands, Red Lake, MN.
LDR:03418nmm a2200301 4500 001 2120742
005 20170724102524.5
008 180830s2016 ||||||||||||||||| ||eng d
020 $a 9781339785653
035 $a (MiAaPQ)AAI10117162
035 $a AAI10117162
040 $a MiAaPQ $c MiAaPQ
100 1 $a Hummel, Stephanie Elizabeth. $3 3282691
245 1 0 $a Understanding the relationships between plant communities, fish communities, and sediment chemistry in pristine Shallow Lake Wetlands, Red Lake, MN.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2016
300 $a 137 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-10(E), Section: B.
500 $a Advisers: Marinus L. Otte; Donna Jacob.
502 $a Thesis (Ph.D.)--North Dakota State University, 2016.
520 $a Over 90% wetland loss in many areas of the United States has triggered extreme concern for declining biodiversity and loss of ecosystem services. Studies assessing ecological characteristics of unaltered wetlands are critical to interpreting potential responses to anthropogenic changes and how ecosystem characteristics and services might respond to future climate dynamics. Previous research shows fish and plant communities play an important role in shallow lake ecology by creating stability within the clear state. Understanding these mechanisms in a pristine setting is important for successful conservation and restoration. Our objectives, part of a long term monitoring study (2009-2015), were 1) Evaluate patterns in multi-element concentrations of pore water along a gradient from upland areas through emergent vegetation to the open water of shallow lake wetlands 2) Assess seasonal changes of multi-element concentrations of pore water during the growing season of shallow lake wetlands 3) Measure the influence of fish communities species composition on plant communities species composition 4) Evaluate how sediment chemistry impacts plant communities. We evaluated pore water chemistry on two lakes using dialysis vials from June-October 2014. We selected 24 shallow lakes located within Red Lake Nation Indian Reservation, MN, USA to conduct the remaining objectives. At each lake we assessed fish community structure and abundance using fyke nets and experimental gill nets for a 24-hr period during July. Aquatic and emergent vegetation was assessed simultaneously by rake throws and Daubenmire frame, and sediment samples were collected by taking a surface grab sample. Sediment samples were taken in the open water and emergent vegetation zones. Pore water did not change across a gradient from upland to open water, but did change over the season from June to October. We found fish community composition did not change significantly from 2009 to 2015, but fish biomass significantly decreased from 2009 to 2015. No species-specific relationships between vegetation and fish existed, but species specific relationships existed between vegetation and sediment characteristics in both the open water and emergent vegetation zones. Results will be used as reference points for restoration and conservation, and serve for a better understanding of shallow lake state stability.
590 $a School code: 0157.
650 4 $a Environmental science. $3 677245
650 4 $a Ecology. $3 516476
650 4 $a Natural resource management. $3 589570
690 $a 0768
690 $a 0329
690 $a 0528
710 2 $a North Dakota State University. $b Environmental and Conservation Sciences. $3 3179167
773 0 $t Dissertation Abstracts International $g 77-10B(E).
790 $a 0157
791 $a Ph.D.
792 $a 2016
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10117162