DEMNA-DNE : Occurrences of benthic macroinvertebrates in running waters of Wallonia, Belgium

<p>&#34;DEMNA: Occurrences of macroinvertebrates in running waters of Wallonia&#34; is an occurrence-only dataset created by the Hydrobiology unit of the Direction de la Nature et de l’Eau [Département de l&#39;Étude du Milieu Naturel et Agricole (SPW-DEMNA-DNE)].</p>
<p>The data come from an ongoing network for the monitoring of the biological quality of running waters in Wallonia maintained under the Water Framework Directive of European Union (Directive 2000/60/CE) (European Council, 2000). The current monitoring network is composed of more than 400 sites, distributed among all streams (brooks to largest rivers/canals) from the hydrographic districts of the Meuse, the Scheldt, the Rhine and the Seine in Wallonia. Macroinvertebrates are one of the 4 indicator groups used to assess the biological quality with macrophytes, diatoms, and fishes. The macroinvertebrate occurrences are obtained by the analysis of standardized IBGN/IBGA samplings, done according a methodology derived from T90-350 (2004) French standard (see Vanden Bossche &amp; Usseglio-Polatera, 2005 in Hydrobiologia, 551: 253-271). Some taxa encountered during the monitoring are not included into this GBIF dataset (when identification level is particularly imprecise, i.e. higher than family E.G: &#39;poriferans&#39;, &#39;Bryozoa&#39;, etc...).</p>
<p>More information and macroinvertebrate samples are available upon request addressed to the DEMNA.</p>

“DEMNA：瓦隆尼亚流动水体中大型无脊椎动物的分布”是一项仅记录发生的数据集，由自然与水资源局（Direction de la Nature et de l’Eau）水生生物学部门（Département de l’Étude du Milieu Naturel et Agricole (SPW-DEMNA-DNE)）创建。数据来源于瓦隆尼亚生物水质监测网络，该网络根据欧盟水框架指令（Directive 2000/60/CE）持续进行，旨在监测流动水体的生物质量（欧洲理事会，2000年）。当前监测网络由超过400个监测点组成，遍布梅斯、斯凯尔特、莱茵和塞纳水文区的所有溪流（从溪流到最大的河流/运河）。大型无脊椎动物是用于评估生物质量的四个指标组之一，其他指标组包括大型水生植物、硅藻和鱼类。大型无脊椎动物的分布情况是通过分析根据2004年法国标准T90-350（Vanden Bossche & Usseglio-Polatera，2005年，Hydrobiologia，551: 253-271）制定的方法进行的标准化IBGN/IBGA采样获得的。在监测过程中遇到的一些类群未被纳入本GBIF数据集（例如，当鉴定级别特别不精确时，即高于家族水平，例如：'多孔动物门'、'苔藓动物门'等...）。如需更多信息或大型无脊椎动物样本，请向DEMNA提出申请。