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Validating a Kentucky wetland rapid assessment method for forested riverine wetlands using vegetation, bird surveys, and landscape analysis.

机译：使用植被，鸟类调查和景观分析验证肯塔基州湿地对森林河流湿地的快速评估方法。

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摘要

Within the last two centuries, Kentucky has undergone wetland losses exceeding 80 percent (approximately 500,000 hectares). As a response to these losses, the Kentucky Division of Water (KDOW) and Eastern Kentucky University (EKU) developed the Kentucky Wetland Rapid Assessment Method (KY-WRAM) to evaluate the condition of Kentucky's remaining wetlands. The goal of this study was to validate the KY-WRAM for forested riverine wetlands using a vegetation index of biotic integrity (VIBI), bird surveys, and landscape development index (LDI). Specific objectives of this study were to: 1) determine the correlation between bird species richness, VIBI, and LDI with the KY-WRAM in forested riverine wetlands; and 2) determine which combination of vegetation and landscape metrics best explain each of the KY-WRAM metric categories. At twenty five sites throughout the Green, Upper Cumberland, and Kentucky River Basins, a KY-WRAM, VIBI, LDI, and survey for bird species richness was conducted. A linear regression indicated that the KY-WRAM was significantly, positively correlated with the VIBI and bird species richness, while the KY-WRAM showed a negative, marginally significant correlation with the LDI. Model-averaging using model selection and parameter estimates indicated that the top models and predictor variables were (1) percent forested, (2) floristic quality assessment index score and percent adventive, and (3) percent adventive and Carex species richness for Metric 2 (Buffers and Surrounding Land Use); Metric 4 (Habitat Reference Comparison); and, Metric 6 (Vegetation, Interspersion, and Microtopography), respectively. Overall, the method's effectiveness was demonstrated by its ability to be predicted by biological and landscape indices at the method level and biological and landscape variables at the metric level.
机译：在过去的两个世纪中，肯塔基州的湿地损失超过80％（约500,000公顷）。为了应对这些损失，肯塔基州水务局（KDOW）和东肯塔基大学（EKU）开发了肯塔基州湿地快速评估方法（KY-WRAM）来评估肯塔基州剩余湿地的状况。这项研究的目的是使用生物完整性植被指数（VIBI），鸟类调查和景观发展指数（LDI）验证森林河流湿地的KY-WRAM。这项研究的特定目标是：1）确定森林河流湿地中鸟类物种丰富度，VIBI和LDI与KY-WRAM之间的相关性；和2）确定哪种植被和景观指标能最好地解释每个KY-WRAM指标类别。在格林河，坎伯兰河上游和肯塔基河流域的25个地点，进行了KY-WRAM，VIBI，LDI以及鸟类物种丰富度调查。线性回归表明，KY-WRAM与VIBI和鸟类物种丰富度呈显着正相关，而KY-WRAM与LDI呈负相关（略微相关）。使用模型选择和参数估计的模型平均表明，度量标准2的顶级模型和预测变量为（1）树木百分比，（2）植物质量评估指标得分和外来百分比，以及（3）外来物种和Carex物种丰富度（缓冲区和周边土地利用）；指标4（人居参考比较）；以及度量6（植被，散布和微观地形）。总体而言，该方法的有效性通过其在方法级别的生物和景观指数以及在度量级别的生物和景观变量的预测能力得以证明。

著录项

  • 作者

    Polascik, JohnRyan Andrew.;

  • 作者单位

    Eastern Kentucky University.;

  • 授予单位 Eastern Kentucky University.;
  • 学科 Ecology.
  • 学位 M.S.
  • 年度 2015
  • 页码 111 p.
  • 总页数 111
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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