...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean & coastal management >Meta-analysis of Ecopath models reveals secondary productivity patterns across the Gulf of Mexico
【24h】

Meta-analysis of Ecopath models reveals secondary productivity patterns across the Gulf of Mexico

机译：对Ecopath模型的荟萃分析揭示了墨西哥湾的次级生产力模式

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Gulf of Mexico large marine ecosystem (LME) is ecologically and economically important, yet faces numerous anthropogenic stressors. Common metrics driving ecosystem assessment and management, particularly at the LME scale, include fisheries harvest and primary productivity. However, neither is adequate in revealing a complete picture of ecosystem health. Secondary production is an important functional component of marine ecosystems. Yet, inherent difficulties in measuring higher productivity limit its use as an ecosystem indicator. The goals of this study were to: 1) use existing ecosystem models to estimate secondary production within the Gulf of Mexico, 2) identify productivity hotspots based on spatial patterns of secondary productivity across the Gulf LME, 3) compare trophic structure, function, efficiency, and productivity among ecosystem types within the Gulf, and 4) determine effectiveness of primary productivity as an indicator of secondary productivity. A meta-analysis of 18 Ecopath models describing Gulf of Mexico subsystems was conducted. Representative systems included temperate estuaries, tropical lagoons, continental shelves, and coral reefs. Annual secondary production ranged from 128 tonnes (t) wet weight (ww) km~(-2) in Tampamachoco Lagoon to 15 466 t ww km~(-2) in the Florida Keys. Spatial patterns of secondary productivity across the Gulf of Mexico LME demonstrate higher values in coastal regions, especially coral reefs. Secondary production is largely supported by benthic food webs across all ecosystems. Benthic food webs are also more efficient with regards to transfer of production than pelagic food webs. No significant relationships between primary and secondary production were observed via linear regression for any ecosystem type, indicating that primary production is not a strong indicator of secondary production. Comparative analyses of ecosystems across the Gulf of Mexico, such as the one presented here, identify critical areas at the LME scale, and support ecosystem-based management initiatives.
机译：墨西哥湾大型海洋生态系统（LME）具有重要的生态和经济意义，但面临众多的人为压力。推动生态系统评估和管理的共同指标，尤其是在LME规模，包括渔业捕捞和初级生产力。但是，这两种方法都不足以揭示生态系统健康的完整情况。次级生产是海洋生态系统的重要功能组成部分。但是，在衡量更高的生产率时固有的困难限制了它作为生态系统指标的用途。这项研究的目标是：1）使用现有的生态系统模型来估计墨西哥湾内的次级生产，2）根据整个海湾LME次级生产力的空间格局确定生产力热点，3）比较营养结构，功能，效率，以及海湾地区生态系统类型之间的生产力，以及4）确定初级生产力作为次级生产力指标的有效性。对描述墨西哥湾子系统的18个Ecopath模型进行了荟萃分析。代表性的系统包括温带河口，热带泻湖，大陆架和珊瑚礁。每年的二次生产量从坦帕马乔科泻湖的128吨湿重（ww）km〜（-2）到佛罗里达礁岛的15466 t ww km〜（-2）。墨西哥湾LME的次级生产力的空间格局表明，沿海地区，尤其是珊瑚礁的价值更高。所有生态系统中的底栖食物网很大程度上支持了次级生产。在生产转移方面，底栖食物网比中上层食物网更有效。通过线性回归对于任何生态系统类型均未观察到初级生产与次级生产之间的显着关系，这表明初级生产并不是次级生产的有力指标。墨西哥湾对生态系统的比较分析（例如此处介绍的分析）可确定LME规模的关键领域，并支持基于生态系统的管理计划。

著录项

  • 来源
    《Ocean & coastal management》 |2014年第11期|32-40|共9页
  • 作者

    Brittany N. Blomberg; Paul A. Montagna;

  • 作者单位

    Harte Research Institute for Gulf of Mexico Studies, Texas A&M University - Corpus Christi, 6300 Ocean Drive, Unit 5869, Corpus Christi, TX 78412, United States;

    Harte Research Institute for Gulf of Mexico Studies, Texas A&M University - Corpus Christi, 6300 Ocean Drive, Unit 5869, Corpus Christi, TX 78412, United States;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号