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Spatial relationships between land-use, habitat, water quality and lotic macroinvertebrates in two Swiss catchments

机译：瑞士两个流域的土地利用，栖息地，水质和大型无脊椎动物之间的空间关系

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摘要

We examined the influence of land-use, habitat, and water quality on the spatial distribution of aquatic macroinvertebrates in two human-dominated catchments in the Swiss Plateau (Guerbe, Moenchaltorfer Aa). Land-use in the Guerbe catchment was dominated by agriculture, whereas urban land-use was more common in the Moenchaltorfer Aa. Study sites in each catchment were characterized using measures of local habitat conditions, water quality parameters including water temperature, and organic matter resources. A strong longitudinal gradient in temperature, conductivity and nitrogen was evident among sites in the Guerbe catchment, although sites on a main tributary had a strong agricultural signature and deviated from this pattern. Percentage agricultural land-use in the Guerbe was strongly correlated with algal biomass and the water quality PCA axes associated with conductivity, nitrogen (axis-1) and temperature (axis-3). Spatial grouping of sites by water quality was less evident in the Moenchaltorfer Aa, except for a strong signal by wastewater treatment plant effluents and partial differences between upper and lower basin sites. Percentage forest and agricultural land-use in the Moenchaltorfer Aa were correlated with water quality PCA axis-2, being associated with phosphorus and temperature. Macroinvertebrate densities, taxonomic richness, and axis-1 from a non-metric multidimensional scaling analysis (NMDS) of taxonomic composition were significantly correlated with water quality PCA axis-1 in the Guerbe catchment. Here, macro-invertebrate densities and NMDS axis-1 scores based on taxon relative abundances and densities were correlated with land-use features. Spatial distances between sites also were related to site differences in macroinvertebrates, reflecting the strong longitudinal environmental gradient in the Gurbe. Taxonomic differences between water quality PCA site groups were less pronounced in the Moenchaltorfer Aa, although differences were significant for trichopterans, ephemeropterans, chironomids, gastropods and coleopterans. Here, NMDS axis-1 based on taxon relative abundances and densities was correlated with forest land-use. Spatial distances between sites were not evident in macroinvertebrate site differences, reflecting the less pronounced spatial and longitudinal patterns in environmental attributes in this catchment. Our results support the hypothesis that spatial distributions of macroinvertebrates are related to spatial relationships among environmental attributes like land-use, habitat, and water quality in human-dominated catchments that depend on river network complexity, a habitat-filtering template in line with ecological niche theory.
机译：我们研究了土地利用，栖息地和水质对瑞士高原两个人为主导的流域（Guerbe，Moenchaltorfer Aa）水生大型无脊椎动物的空间分布的影响。瓜尔伯流域的土地利用以农业为主，而城市土地利用在Moenchaltorfer Aa地区更为普遍。使用当地生境条件，水质参数（包括水温）和有机物资源的度量来表征每个流域的研究地点。尽管主要支流上的站点具有很强的农业特征并且偏离了这种模式，但在Guerbe流域的站点之间，温度，电导率和氮的纵向梯度很明显。瓜尔比的农业土地利用百分比与藻类生物量以及水质PCA轴与电导率，氮（轴1）和温度（轴3）密切相关。在Moenchaltorfer Aa中，按水质进行的场地空间分组不太明显，除了废水处理厂废水发出的强烈信号以及上，下流域场地之间的局部差异。 Moenchaltorfer Aa中森林和农业土地的使用率与水质PCA轴2相关，与磷和温度相关。非生物分类学组成的非度量多维尺度分析（NMDS）中的大型无脊椎动物密度，生物分类丰富度和轴1与古尔伯流域的水质PCA轴1显着相关。在这里，基于分类群相对丰度和密度的大型无脊椎动物密度和NMDS轴1得分与土地利用特征相关。站点之间的空间距离也与大型无脊椎动物的站点差异有关，这反映了古尔伯强烈的纵向环境梯度。在Moenchaltorfer Aa中，水质PCA位点组之间的分类学差异不太明显，尽管对毛鳞翅目，星翅目，鳞翅目，腹足纲和鞘翅目而言差异显着。在这里，基于分类单元相对丰度和密度的NMDS轴1与森林土地利用相关。在大型无脊椎动物的地点差异中，地点之间的空间距离并不明显，反映出该流域环境属性的空间和纵向格局不太明显。我们的研究结果支持以下假设：大型无脊椎动物的空间分布与人类主导集水区的环境属性（如土地利用，栖息地和水质）之间的空间关系有关，取决于河流网络的复杂性，符合生态位的栖息地过滤模板理论。

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  • 来源
    《Aquatic Sciences》 |2014年第3期|375-392|共18页
  • 作者

    C. T. Robinson; N. Schuwirth; S. Baumgartner; C. Stamm;

  • 作者单位

    Department of Aquatic Ecology, Eawag, 8600 Duebendorf, Switzerland,Institute of Integrative Biology, ETH-Zuerich, Zurich, Switzerland;

    Department of Systems Analysis and Modeling, Eawag, 8600 Duebendorf, Switzerland;

    Department of Aquatic Ecology, Eawag, 8600 Duebendorf, Switzerland,Institute of Integrative Biology, ETH-Zuerich, Zurich, Switzerland;

    Department of Environmental Chemistry, Eawag, 8600 Duebendorf, Switzerland;

  • 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

    Urban stream; Aquatic insects; Physico-chemical; Nutrients; Micropollutants;

    机译：城市流水生昆虫;理化;营养素;微量污染物;

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