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Is net ecosystem production higher in natural relative to constructed wetlands?

机译：相对于人工湿地，自然生态系统的净生产量是否更高？

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摘要

Ecosystem metabolism is an important measure of wetland restoration efficiency, and serves to indicate if the system is capable of processing energetic resources. Despite its value, ecosystem metabolism has rarely been included in monitoring programs. In this study, we aimed to achieve the following objectives: (i) compare net ecosystem production (NEP) rates of constructed vs. natural wetlands; (ii) identify the highest NEP rate habitats; and (iii) define the main environmental factors regulating NEP in different wetland types. Pelagic and benthic NEP rates and physicochemical features were measured in three natural and five constructed wetlands in the middle Ebro River floodplain (NE Spain). Statistical analyses showed pelagic NEP rates peaked in natural wetlands, which produced up to 187.5 mg C m~(-3) h~(-1) compared to lower rates in constructed wetlands (up to 46.2 mg C m~(-3) h~(-1)). Pelagic NEP responded positively to temperature, total dissolved solids, and nutrients. Benthic NEP rates were 3 to 30-fold greater than pelagic in natural (up to 994.9 mg C m~(-3) h~(-1)) and constructed (up to 1,551.5 mg C m~(-3) h~(-1)) wetlands, and were heavily influenced by habitat type, with NEP peaking in areas dominated by submerged vegetation and fine organic sediment. Rapid recovery in aquatic communities (i.e. macroinvertebrate diversity) has been previously reported for the studied wetlands; however, our study suggests a slower recovery of functional processes (i.e. pelagic NEP) in constructed habitats. We therefore strongly advocate the inclusion of ecosystem function in the design and evaluation of restoration projects to optimise long-term wetland ecosystem sustainability.
机译：生态系统的新陈代谢是衡量湿地恢复效率的重要指标，它可以指示该系统是否能够处理能量丰富的资源。尽管有其价值，但生态系统的新陈代谢很少被纳入监测计划。在这项研究中，我们旨在实现以下目标：（i）比较人工湿地与自然湿地的净生态系统生产率（NEP）； （ii）确定最高NEP率的栖息地； （iii）定义了不同湿地类型中调节NEP的主要环境因素。在埃布罗河中游平原（西班牙东北）的三个自然湿地和五个人工湿地中测量了上，下层NEP速率和理化特征。统计分析表明，浮游NEP发生率在自然湿地达到峰值，产生的最高值为187.5 mg C m〜（-3）h〜（-1），而人工湿地的产生率较低（最高为46.2 mg C m〜（-3）h 〜（-1））。中上层NEP对温度，总溶解固体和养分有积极反应。在自然环境中（高达994.9 mg C m〜（-3）h〜（-1））和构造的海底NEP速率比中上层的NEP高3到30倍（高达1,551.5 mg C m〜（-3）h〜（ -1））湿地，受生境类型的影响很大，在被淹没的植被和精细有机沉积物为主的地区，NEP达到峰值。先前已经有报告指出，研究过的湿地在水生社区迅速恢复（即无脊椎动物多样性）。但是，我们的研究表明，在人工栖息地中，功能过程（即中上层NEP）的恢复较慢。因此，我们强烈主张将生态系统功能纳入恢复项目的设计和评估中，以优化湿地生态系统的长期可持续性。

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  • 来源
    《Aquatic Sciences》 |2013年第3期|385-397|共13页
  • 作者

    Cecilia Espanol; Belinda Gallardo; M. Rosa Pino; Ana Martin; Francisco A. Comin;

  • 作者单位

    Environmental Institute, San Jorge University, Autovia A-23 Zaragoza-Huesca Km. 299, 50830 Villanueva de Gallego, Spain,Pyrenean Institute of Ecology (IPE-CSIC),Avda. Montanana 1005, 50059 Zaragoza, Spain;

    Pyrenean Institute of Ecology (IPE-CSIC),Avda. Montanana 1005, 50059 Zaragoza, Spain,Department of Zoology, Cambridge University,Downing Str, CB2 3EJ Cambridge, UK;

    Environmental Institute, San Jorge University, Autovia A-23 Zaragoza-Huesca Km. 299, 50830 Villanueva de Gallego, Spain;

    Environmental Institute, San Jorge University, Autovia A-23 Zaragoza-Huesca Km. 299, 50830 Villanueva de Gallego, Spain,Pyrenean Institute of Ecology (IPE-CSIC),Avda. Montanana 1005, 50059 Zaragoza, Spain;

    Pyrenean Institute of Ecology (IPE-CSIC),Avda. Montanana 1005, 50059 Zaragoza, Spain;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Benthic ecosystem metabolism; Dissolved oxygen; Ecosystem functions; Generalized additive models (GAM); Net primary production; Pelagic ecosystem metabolism;

    机译：底栖生态系统的新陈代谢;溶解氧;生态系统功能;广义加性模型（GAM）;净初级生产;中上层生态系统的新陈代谢;

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