Collaborative Research: Response of Tropical Stream Ecosystem Structure and Function to Amphibian Extinctions

合作研究:热带溪流生态系统结构和功能对两栖动物灭绝的响应

基本信息

项目摘要

Abstract. Amphibians represent an important energetic link between aquatic and terrestrial habitats, particularly in the tropics where diversity and abundance are very high. Tadpoles feed on algae and organic materials and transfer energy and nutrients from aquatic to terrestrial habitats when they emerge as frogs, and frogs transfer energy and materials back when they return to water to breed. However, amphibian populations have declined dramatically around the world, including massive losses in 13 Latin American countries in the last 20 years. Most declines involve disappearances of over 75% of amphibians at a given site. This research will examine the consequences of amphibian declines on tropical streams by investigating how losses alter stream biodiversity, energy flow in streams, in-stream and streamside food webs, and energy exchange between streams and terrestrial habitats. This will be accomplished through intensive comparisons of stream communities, food webs, and energy flow patterns in Panamanian highland streams with natural amphibian populations and nearby streams where amphibians have recently disappeared. Preliminary studies suggest that amphibian declines will have large-scale effects on streams, including changes in community structure, shifts to increased importance of algal energy sources, reduced downstream transport of organic materials, and reduced energy transfer from streams to terrestrial habitats. Broader impacts. The broader implications of this research are that findings will be relevant to an urgent problem (i.e. amphibian declines) influencing many regions. The proposed research will also provide opportunities for students from Latin America and the U.S. to work on an important, large-scale environmental issue and will further collaboration between the 3 institutions involved and other scientists researching related issues in the tropics.
摘要。两栖动物代表了水生和陆地栖息地之间重要的能量纽带,特别是在多样性和丰度非常高的热带地区。蝌蚪以藻类和有机物质为食,当它们变成青蛙时,将能量和营养物质从水生栖息地转移到陆地栖息地,青蛙回到水中繁殖时,将能量和物质转移回来。然而,两栖动物的数量在世界范围内急剧下降,在过去的20年里,13个拉丁美洲国家的两栖动物数量大量减少。在大多数情况下,在给定的地点,超过75%的两栖动物消失了。这项研究将通过调查两栖动物的减少如何改变河流的生物多样性,河流中的能量流动,河流内和河边的食物网,以及河流和陆地栖息地之间的能量交换,来研究两栖动物减少对热带河流的影响。这将通过巴拿马高地溪流与天然两栖动物种群和附近两栖动物最近消失的溪流的溪流群落、食物网和能量流模式的密集比较来完成。初步研究表明,两栖动物的减少将对河流产生大规模的影响,包括群落结构的变化,藻类能源的重要性增加,有机物质下游运输的减少,以及从河流到陆地栖息地的能量转移的减少。更广泛的影响。这项研究的更广泛的含义是,研究结果将与影响许多地区的紧迫问题(即两栖动物的减少)相关。拟议的研究还将为来自拉丁美洲和美国的学生提供机会,研究一个重要的、大规模的环境问题,并将进一步促进3个相关机构和其他研究热带相关问题的科学家之间的合作。

项目成果

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Catherine Pringle其他文献

Decomposition rates appear stable despite elevated shrimp abundances following hurricanes in montane streams, Puerto Rico
尽管波多黎各山区溪流飓风过后虾的丰度有所增加,但分解率似乎保持稳定
  • DOI:
    10.1007/s10750-023-05458-2
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    2.6
  • 作者:
    Max Kelly;Mary C. Freeman;P. Gutiérrez;Jesús E. Gómez;Rafael Pérez;Lulu Victoria;Alonso Ramírez;Catherine Pringle
  • 通讯作者:
    Catherine Pringle
The risk of humanitarianism : industry-specific political-security risk analysis for international agencies in conflict zones
人道主义风险:冲突地区国际机构的特定行业政治安全风险分析
  • DOI:
  • 发表时间:
    2010
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Catherine Pringle
  • 通讯作者:
    Catherine Pringle
Lymph node harvest in colorectal resections: an audit at a south-east England colorectal surgery unit comparing performance in 2005 and 2008 with analysis of the influence of key operative factors
  • DOI:
    10.1016/j.ijsu.2012.06.117
  • 发表时间:
    2012-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Khabab Osman;Catherine Pringle;Humphrey Scott
  • 通讯作者:
    Humphrey Scott
Risk factors for perianeurysmal vasogenic oedema (pavo) following embolization therapy: literature review
栓塞治疗后动脉瘤周围血管源性水肿(pavo)的危险因素:文献综述
  • DOI:
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    2.8
  • 作者:
    Emmanuel O. Mensah;Abdul R. Abusellie;Catherine Pringle;H. Emsley;A. Alalade;Gareth A. Roberts
  • 通讯作者:
    Gareth A. Roberts
Restoring and managing natural capital towards fostering economic development: Evidence from the Drakensberg, South Africa
  • DOI:
    10.1016/j.ecolecon.2010.01.007
  • 发表时间:
    2010-04-01
  • 期刊:
  • 影响因子:
  • 作者:
    James Blignaut;Myles Mander;Roland Schulze;Mark Horan;Chris Dickens;Catherine Pringle;Khulile Mavundla;Isaiah Mahlangu;Adrian Wilson;Margaret McKenzie;Steve McKean
  • 通讯作者:
    Steve McKean

Catherine Pringle的其他文献

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{{ truncateString('Catherine Pringle', 18)}}的其他基金

LTREB Renewal: Emergent landscape patterns in stream ecosystem processes resulting from groundwater/surface water interactions
LTREB 更新:地下水/地表水相互作用产生的河流生态系统过程中的新兴景观模式
  • 批准号:
    1122389
  • 财政年份:
    2011
  • 资助金额:
    $ 20万
  • 项目类别:
    Continuing Grant
Collaborative Research: Ecosystem Consequences of Extinction: Quantifying the Ecological effects of Catastrophic Amphibian Dclines in Neotropical Streams
合作研究:灭绝的生态系统后果:量化新热带溪流中灾难性两栖动物衰退的生态影响
  • 批准号:
    0717625
  • 财政年份:
    2007
  • 资助金额:
    $ 20万
  • 项目类别:
    Continuing Grant
LTREB: Emergent Landscape Patterns in Stream Ecosystem Processes Resulting from Groundwater/Surface Water Interactions
LTREB:地下水/地表水相互作用导致的河流生态系统过程中的新兴景观模式
  • 批准号:
    0545463
  • 财政年份:
    2006
  • 资助金额:
    $ 20万
  • 项目类别:
    Continuing Grant
U.S.-Costa Rica Dissertation Enhancement: Exogenous Versus Endogenous Control of Microbially-mediated Decomposition in Lowland Neotropical Streams
美国-哥斯达黎加论文增强:低地新热带溪流中微生物介导的分解的外源与内源控制
  • 批准号:
    0434503
  • 财政年份:
    2004
  • 资助金额:
    $ 20万
  • 项目类别:
    Standard Grant
DISSERTATION RESEARCH: Natural and Human-generated Landscape Scale Effects of Migratory Biota in Tropical Streams, Puerto Rico
论文研究:波多黎各热带溪流中迁徙生物群的自然和人为景观规模效应
  • 批准号:
    0308543
  • 财政年份:
    2003
  • 资助金额:
    $ 20万
  • 项目类别:
    Standard Grant
LTREB: Evaluation of Landscape Patterns in Ecosystem Processes in Detrital-based Tropical Streams
LTREB:基于碎屑的热带溪流生态系统过程景观格局的评估
  • 批准号:
    0075339
  • 财政年份:
    2000
  • 资助金额:
    $ 20万
  • 项目类别:
    Continuing Grant
SGER: A Pre-Extirpation Study of the Role of Stream-Dwelling Frogs
SGER:对溪流蛙作用的灭绝前研究
  • 批准号:
    0001615
  • 财政年份:
    2000
  • 资助金额:
    $ 20万
  • 项目类别:
    Standard Grant
Dissertation Research: Effects of Omnivorous Fishes and Shrimps on Community Structure Along a Tropical Stream Continuum, Puerto Rico
论文研究:杂食性鱼和虾对波多黎各热带溪流连续体群落结构的影响
  • 批准号:
    9701299
  • 财政年份:
    1997
  • 资助金额:
    $ 20万
  • 项目类别:
    Standard Grant
LTREB: Evaluation of Geothermally-modified Runoff and Nutrient Cycling in a Lowland Tropical Stream
LTREB:低地热带溪流中地热改良径流和养分循环的评估
  • 批准号:
    9528434
  • 财政年份:
    1996
  • 资助金额:
    $ 20万
  • 项目类别:
    Continuing Grant
Volcanic Processes Introduce Chemical Discontinuities into Lowland Tropical Streams: Ecological Response to Geothermally-derived Solutes
火山过程将化学不连续性引入低地热带溪流:对地热衍生溶质的生态响应
  • 批准号:
    9396127
  • 财政年份:
    1993
  • 资助金额:
    $ 20万
  • 项目类别:
    Continuing Grant

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