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US-Mexico Dissertation Enhancement: Changes in Community Structure and Ecosystem Processes in Response to Armored Catfish Invasion

US-Mexico Dissertation Enhancement: Changes in Community Structure and Ecosystem Processes in Response to Armored Catfish Invasion
美国-墨西哥论文增强:针对装甲鲶鱼入侵的群落结构和生态系统过程的变化
批准号:
0951432
负责人:
Alexander Flecker
金额:
$1.39万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2010
资助国家:
美国
项目状态:
已结题
起止时间:
2010-01-15 至 2011-06-30

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中文摘要
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英文摘要
Although invasive grazing organisms have been introduced throughout the globe, little is understood about the effects of exotic grazers on nutrient cycling and other key ecosystem processes. The major objectives of this doctoral dissertation enhancement project are to examine whether exotic armored catfish alter nutrient cycling and primary productivity, decrease food quality and quantity for native species, and reduce native biodiversity of invertebrates and fishes in invaded tropical ecosystems. Graduate student Krista Capps, under the mentorship of Dr. Alexander Flecker, will study the impacts of armored catfishes on rivers systems in the Grijalva-Usumacinta watershed, a biologically and culturally diverse region in southern Mexico. The research will be done in collaboration with Dr. Rocío Rodiles-Hernández of the Colegio de la Frontera Sur (ECOSUR) in San Cristobal de las Casas, Mexico. The products generated by this study will include: 1) an experimental framework to assess the effects of invasive grazing organisms, 2) an understanding of how exotic armored catfish retain and process nutrients, 3) biological and chemical surveys of armored catfish invasion sites, and 4) enhanced biodiversity knowledge of the Grijalva-Usumacinta watershed through the creation and enhancement of biological collections.The introduction of non-native species is one of the greatest threats to species diversity and ecosystem function throughout the world. This study will directly contribute to the general understanding of exotic grazing organisms and their effects on ecosystem health. Since armored catfish invasion has been linked to the collapse of freshwater fisheries in the Usumacinta watershed region, knowledge derived from this study will also have extensive management implications. The research team will collaborate with the Mexican National Institute of Anthropology and History to promote management of exotic armored catfish populations, and will enhance the biodiversity knowledge of freshwater organisms in and around Palenque National Park, a UNESCO World Heritage Site.
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Dissertation Research: Nitrogen to phosporus ratio as a driver of arsenic retention
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    1701839
  • 项目类别:
    Standard Grant
  • 资助金额:
    $2.03万
  • 财政年份:
    2017
  • 负责人:
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  • 依托单位:
DISSERTATION RESEARCH: Highly unsaturated fatty acid transfer from aquatic to terrestrial food webs
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    1500997
  • 项目类别:
    Standard Grant
  • 资助金额:
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    2015
  • 负责人:
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  • 依托单位:
Collaborative Research: RAPID - Effects of an Extreme Disturbance Event on Genomic Variation and Community Organization of Stream Insects
  • 批准号:
    1434987
  • 项目类别:
    Standard Grant
  • 资助金额:
    $3.46万
  • 财政年份:
    2014
  • 负责人:
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  • 依托单位:
Dissertation Research: Assessing the role of rapid evolution in trait-mediated predator effects on communities and ecosystems
  • 批准号:
    1310745
  • 项目类别:
    Standard Grant
  • 资助金额:
    $2.01万
  • 财政年份:
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  • 负责人:
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  • 依托单位:
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