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

Zooplankton Community Responses to V...

Pezzuoli, Alexander Raymond.

Linked to FindBook

Google Book

Amazon

博客來

Zooplankton Community Responses to Varying Environmental Conditions and Disturbances.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Zooplankton Community Responses to Varying Environmental Conditions and Disturbances./
作者:	Pezzuoli, Alexander Raymond.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	146 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-02, Section: B.
Contained By:	Dissertations Abstracts International81-02B.
標題:	Biology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13858634
ISBN:	9781085558723

Zooplankton Community Responses to Varying Environmental Conditions and Disturbances.
Pezzuoli, Alexander Raymond.

Zooplankton Community Responses to Varying Environmental Conditions and Disturbances. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 146 p.

Source: Dissertations Abstracts International, Volume: 81-02, Section: B.

Thesis (Ph.D.)--Rensselaer Polytechnic Institute, 2019.

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

Spatial and temporal changes in the zooplankton community of Lake George, NY were examined over a four-year period from 2014-2017. Lake George is an oligotrophic lake that is affected by the threats posed by nutrient pollution, climate change and the impact of invasive species. The oligotrophic nature of this system coupled with the multitude of threats affecting it makes this an ideal system to study how zooplankton communities respond to environmental change.The concentration of human development at the southern end of the lake has caused it to operate in a fashion more similar to two interconnected systems, with a less impacted North Basin and a more impacted South Basin, rather than one homogenous waterbody. The differences between the basins are subtle, but this unique characteristic of Lake George allows for the examination of how aquatic environments differ along a gradient of human impact. Different zooplankton communities were present in each of the two deep basins that reflected the conditions present in the basin. Higher rotifer abundances, along with the presence of the indicator taxa Trichocerca sp. and Conochiloides dossuarius in the South Basin demonstrate the effect development has on the increased productivity of the southern end of the lake.Over the last two decades, water temperatures have been rising in Lake George. In 2016, there was an unusually warm winter that allowed for an examination of potential future scenarios under current trends. In 2016, disruption to the normal timing of the onset of the growing season altered the crustacean zooplankton community throughout the entire summer. Calanoid copepods were dominant for the only time in the four years studied, and Daphnia populations declined in favor of Bosmina and Sida. This highlights the threat of a complete restructuring of food web interactions in aquatic systems that is posed by the current climatic trends.The effect that lake conditions have on diel vertical migration, a biologically and ecologically important behavior was examined using high-frequency sensor platforms. In this study, we examined the applicability of high-frequency sensors to the study of the vertical position of the zooplankton in an aquatic system.In Lake George, Bythotrephes longimanus was first observed in 2011. B. longimanus is an aggressive predator of zooplankton that can completely reshape the communities of invaded lakes. By the end of 2015 Daphnia pulicaria, the most common Daphniid, was no longer observed. In 2017, adult B. longimanus were no longer collected by monitoring efforts. While the invasion was short-lived, it had a persistent impact on the zooplankton community.The loss of preferred food sources for B. longimanus could have been enough to cause its disappearance from sampling efforts. However, the prevalence of B. longimanus in other systems with unfavorable zooplankton communities raises the question of what is its diet in lakes that sustain long term invasions. In order to answer this question, a metabarcoding study was conducted examining the gut content of B. longimanus in two lakes with established populations. B. longimanus avoided preying upon the dominant zooplankton species in one of the lakes, and we observed a new predator-prey relationship between this invader and Chaoborus.

ISBN: 9781085558723Subjects--Topical Terms:

522710
Biology.

Zooplankton Community Responses to Varying Environmental Conditions and Disturbances.
LDR:04343nmm a2200313 4500 001 2263404
005 20200316072003.5
008 220629s2019 ||||||||||||||||| ||eng d
020 $a 9781085558723
035 $a (MiAaPQ)AAI13858634
035 $a AAI13858634
040 $a MiAaPQ $c MiAaPQ
100 1 $a Pezzuoli, Alexander Raymond. $3 3540495
245 1 0 $a Zooplankton Community Responses to Varying Environmental Conditions and Disturbances.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2019
300 $a 146 p.
500 $a Source: Dissertations Abstracts International, Volume: 81-02, Section: B.
500 $a Advisor: Nierzwicki-Bauer, Sandra.
502 $a Thesis (Ph.D.)--Rensselaer Polytechnic Institute, 2019.
506 $a This item must not be sold to any third party vendors.
520 $a Spatial and temporal changes in the zooplankton community of Lake George, NY were examined over a four-year period from 2014-2017. Lake George is an oligotrophic lake that is affected by the threats posed by nutrient pollution, climate change and the impact of invasive species. The oligotrophic nature of this system coupled with the multitude of threats affecting it makes this an ideal system to study how zooplankton communities respond to environmental change.The concentration of human development at the southern end of the lake has caused it to operate in a fashion more similar to two interconnected systems, with a less impacted North Basin and a more impacted South Basin, rather than one homogenous waterbody. The differences between the basins are subtle, but this unique characteristic of Lake George allows for the examination of how aquatic environments differ along a gradient of human impact. Different zooplankton communities were present in each of the two deep basins that reflected the conditions present in the basin. Higher rotifer abundances, along with the presence of the indicator taxa Trichocerca sp. and Conochiloides dossuarius in the South Basin demonstrate the effect development has on the increased productivity of the southern end of the lake.Over the last two decades, water temperatures have been rising in Lake George. In 2016, there was an unusually warm winter that allowed for an examination of potential future scenarios under current trends. In 2016, disruption to the normal timing of the onset of the growing season altered the crustacean zooplankton community throughout the entire summer. Calanoid copepods were dominant for the only time in the four years studied, and Daphnia populations declined in favor of Bosmina and Sida. This highlights the threat of a complete restructuring of food web interactions in aquatic systems that is posed by the current climatic trends.The effect that lake conditions have on diel vertical migration, a biologically and ecologically important behavior was examined using high-frequency sensor platforms. In this study, we examined the applicability of high-frequency sensors to the study of the vertical position of the zooplankton in an aquatic system.In Lake George, Bythotrephes longimanus was first observed in 2011. B. longimanus is an aggressive predator of zooplankton that can completely reshape the communities of invaded lakes. By the end of 2015 Daphnia pulicaria, the most common Daphniid, was no longer observed. In 2017, adult B. longimanus were no longer collected by monitoring efforts. While the invasion was short-lived, it had a persistent impact on the zooplankton community.The loss of preferred food sources for B. longimanus could have been enough to cause its disappearance from sampling efforts. However, the prevalence of B. longimanus in other systems with unfavorable zooplankton communities raises the question of what is its diet in lakes that sustain long term invasions. In order to answer this question, a metabarcoding study was conducted examining the gut content of B. longimanus in two lakes with established populations. B. longimanus avoided preying upon the dominant zooplankton species in one of the lakes, and we observed a new predator-prey relationship between this invader and Chaoborus.
590 $a School code: 0185.
650 4 $a Biology. $3 522710
650 4 $a Ecology. $3 516476
650 4 $a Limnology. $3 545788
690 $a 0306
690 $a 0329
690 $a 0793
710 2 $a Rensselaer Polytechnic Institute. $b Biology. $3 3178855
773 0 $t Dissertations Abstracts International $g 81-02B.
790 $a 0185
791 $a Ph.D.
792 $a 2019
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13858634