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首页> 外文会议>International Association of Theoretical and Applied Limnology >Comparison of the macroinvertebrate communities of seepage and lake-fed headwater streams
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Comparison of the macroinvertebrate communities of seepage and lake-fed headwater streams

机译：渗水和湖泊饲喂下游流的大型脊椎动物群落的比较

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Small streams in Ireland, including first – and second – order streams make up a large component of the river channel network, with recent estimates of over 77% (KAVANAGH et al. 2006). Although diverse in their catchment landscape, the small streams are either seepage-, spring-, or lake-fed, with no glacial or snow-melt influence. The source, described as the origin of the water flow, and its affect on the downstream ecology of headwaters has received some attention. Studies on lake outlet streams (MALMQVIST & ERIKSSON 1995, FRIBERG et al. 2001), ground-water, and glacier-fed streams (MILNER PETTS 1994, FRIBERG et al. 2001, HIEBER et al. 2002), and seepage-fed streams (HEINO et al. 2003) indicate that the origin of the source can influence the invertebrate community. Most of the headwaters studied are seepage-fed (FURSE 2000, HEINO et al. 2003, MEYER et al. 2007) and their instream biology is characterised by the extensive interface with the adjacent landscape (CUMMINS 1992, VENTURA & HARPER 1996). Conversely, lake-fed streams have received little attention, although described as highly productive transition zones between lacustrine and lotic conditions (MALMQVIST & ERIKSSON 1995); however, this productivity is considered to be restricted to close to the lake outlet (HIEBER et al. 2002). RICHARDSON & MACKEY (1991) and MALMQVIST & BRONMARK (1984) both showed a longitudinal change in the invertebrate abundance and species richness decreasing from the lake outlet. There is some indication that the trophic structure differs as changes occur in the functional feeding groups (FFGs) between lake-fed and seepage-fed streams (MALMQVIST & BRONMARK 1984, 1985). These changes seem to be confined to the lake itself with little downstream transfer, with community differences occurring within hun-dreds of meters of the source lake.With the future ecological assessment of small streams be-ing implemented using a typological approach in Europe this study determines whether the source of headwaters influences the stream ecology enough to warrant separate typological consideration. The invertebrate communities of lake-fed and seepage-fed headwater streams were compared across a range of geological and geographical landscapes in Ireland.
机译：在爱尔兰的小型溪流，包括第一和二阶流，弥补了河道网络的大量组成部分，最近估计超过77％（Kavanagh等人。2006）。虽然它们的集水区景观多样化，但小型溪流是渗透的，春季或湖泊喂养，没有冰川或雪熔化的影响。作为水流量的来源，其对返波的下游生态的影响，所谓的来源得到了一些关注。 Lake Outlet Streams的研究（Malmqvist＆Eriksson 1995，Friberg等，2001），地面水和冰川喂食溪流（Milner Petts 1994，Friberg等，2001，Hieber等，2002），以及渗漏的溪流（Heino等人2003）表明源的起源可以影响无脊椎动物群体。学习的大多数椎间路都是渗出的（Furse 2000，Heino等，2003年，Meyer等，2007）及其仪器的生物学的特点是与相邻景观的广泛接口（康明斯1992，Ventura＆Harper 1996）。相反，湖泊喂食溪流收到了很少的关注，尽管描述为湖泊和大众条件之间的高效过渡区（Malmqvist＆Eriksson 1995）;然而，这种生产率被认为是靠近湖泊出口（Hieber等人2002）。 Richardson＆Mackey（1991）和Malmqvist＆Bronmark（1984）都显示出无脊椎动物丰富和物种丰富度的纵向变化，从湖泊出口下降。存在一些指示湖泊喂养和渗流喂食流（MalmQvist＆Bronmark 1984,1985）中的功能喂养基团（FFG）中发生的变化而发生营养结构而不同的迹象。这些变化似乎被限制在湖泊上，在下游转移很少，在源湖的鸡舍内发生社区差异。在本研究中使用一个类型的方法来实施的小型溪流的未来生态评估，这项研究确定返波的来源是否会影响流生态，足以保证单独的类型学考虑。在爱尔兰的一系列地质和地理景观中比较了湖泊喂养和渗漏的下潜水物流的无脊椎动物群落。

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