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

Understanding Community Assembly Processes and Ecosystem Function in Tropical and Temperate Streams.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Understanding Community Assembly Processes and Ecosystem Function in Tropical and Temperate Streams./
作者:	Given, EmmaLeigh Kaleb.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	162 p.
附註:	Source: Dissertations Abstracts International, Volume: 82-03, Section: B.
Contained By:	Dissertations Abstracts International82-03B.
標題:	Entomology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28121610
ISBN:	9798664783827

Understanding Community Assembly Processes and Ecosystem Function in Tropical and Temperate Streams.
Given, EmmaLeigh Kaleb.

Understanding Community Assembly Processes and Ecosystem Function in Tropical and Temperate Streams. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 162 p.

Source: Dissertations Abstracts International, Volume: 82-03, Section: B.

Thesis (Ph.D.)--Kent State University, 2020.

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

Freshwater ecosystems are under threat due to ongoing global changes and organic matter decomposition in streams is one at-risk process. The decomposition of organic matter in streams is not only an essential process for downstream food webs, but it also provides direct resources for headwater systems. This dissertation focuses on understanding potential factors influencing the decomposition of leaf litter in both tropical and temperate streams, as well as how these same factors influence invertebrates which feed upon decaying organic matter. First, the importance of seasonal hydrologic patterns on premontane rainforests streams in Costa Rica was studied. Surprisingly, decomposition progressed more rapidly during the dry season than the rainy season, with more macroinvertebrates present during the dry season. Next, in the same premontane rainforest streams experimental rock gabion cages were installed at natural bifurcations to divert small flood disturbances away from one channel, while the other reach remained free flowing. From this, it was determined that small predictable disturbances did alter decay rates, but not detritivore macroinvertebrate communities. In contrast, larger flood disturbances had a consequently greater impact on community dynamics. Finally, we studied the decomposition and invertebrate colonization of non-native invasive Frangula alnus leaves versus native Cornus amomum leaves in Northeast Ohio streams. It was determined that Frangula alnus decomposes more quickly with less invertebrates present, than Cornus amomum which had more macroinvertebrates residing on the leaf litter. This dissertation reveals that the processes control decomposition of leaf litter in streams is complex, and that both environmental, biotic, and abiotic can both influence the rate at which decay progresses.

ISBN: 9798664783827Subjects--Topical Terms:

615844
Entomology.
Subjects--Index Terms:

Neotropical

Understanding Community Assembly Processes and Ecosystem Function in Tropical and Temperate Streams.
LDR:03151nmm a2200421 4500 001 2346164
005 20220620110432.5
008 241004s2020 ||||||||||||||||| ||eng d
020 $a 9798664783827
035 $a (MiAaPQ)AAI28121610
035 $a (MiAaPQ)OhioLINKkent1595852577551628
035 $a AAI28121610
040 $a MiAaPQ $c MiAaPQ
100 1 $a Given, EmmaLeigh Kaleb. $3 3685211
245 1 0 $a Understanding Community Assembly Processes and Ecosystem Function in Tropical and Temperate Streams.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 162 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-03, Section: B.
500 $a Advisor: de Szalay, Ferenc;Oscar, Rocha.
502 $a Thesis (Ph.D.)--Kent State University, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a Freshwater ecosystems are under threat due to ongoing global changes and organic matter decomposition in streams is one at-risk process. The decomposition of organic matter in streams is not only an essential process for downstream food webs, but it also provides direct resources for headwater systems. This dissertation focuses on understanding potential factors influencing the decomposition of leaf litter in both tropical and temperate streams, as well as how these same factors influence invertebrates which feed upon decaying organic matter. First, the importance of seasonal hydrologic patterns on premontane rainforests streams in Costa Rica was studied. Surprisingly, decomposition progressed more rapidly during the dry season than the rainy season, with more macroinvertebrates present during the dry season. Next, in the same premontane rainforest streams experimental rock gabion cages were installed at natural bifurcations to divert small flood disturbances away from one channel, while the other reach remained free flowing. From this, it was determined that small predictable disturbances did alter decay rates, but not detritivore macroinvertebrate communities. In contrast, larger flood disturbances had a consequently greater impact on community dynamics. Finally, we studied the decomposition and invertebrate colonization of non-native invasive Frangula alnus leaves versus native Cornus amomum leaves in Northeast Ohio streams. It was determined that Frangula alnus decomposes more quickly with less invertebrates present, than Cornus amomum which had more macroinvertebrates residing on the leaf litter. This dissertation reveals that the processes control decomposition of leaf litter in streams is complex, and that both environmental, biotic, and abiotic can both influence the rate at which decay progresses.
590 $a School code: 0101.
650 4 $a Entomology. $3 615844
650 4 $a Ecology. $3 516476
650 4 $a Biology. $3 522710
650 4 $a Environmental studies. $3 2122803
650 4 $a Aquatic sciences. $3 3174300
653 $a Neotropical
653 $a Macroinvertebrates
653 $a Decomposition
653 $a Invasive stream
653 $a Seasonality
653 $a Flooding
690 $a 0792
690 $a 0353
690 $a 0329
690 $a 0306
690 $a 0477
710 2 $a Kent State University. $b College of Arts and Sciences / Department of Biological Sciences. $3 3189612
773 0 $t Dissertations Abstracts International $g 82-03B.
790 $a 0101
791 $a Ph.D.
792 $a 2020
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28121610