This study presents examples of successful restoration projects for biodiversity conservation. In West France, the Pinail National Nature Reserve is a protected wetland interspersed with more than 6000 ponds. This wetland is inhabited by 50 species of Odonata and thus is a key biodiversity area for damselflies and dragonflies conservation. In the past, when the limestone was exploited, the streams of the plateau were artificially channeled rectilinearly, running to the Vienne River. Eventually streams were blocked by biomass and sediments resulting in water flowing mainly underground. In 2011, two restoration projects dug and recreated lost habitats such as running streams and meanders by openly reconnecting bodies of standing water (two sites: Rivau (20 m) and Hutte (400 m) streams). The Odonata species diversity and abundance are annually monitored following transect inventories since 1995 and still ongoing. Diversity and abundance were compared before and after the restoration. The abundance and species diversity increased at both sites due to the addition of lotic habitats and consequently additional new species. The number of observed species almost doubled on the Rivau (from 5.4 observed species to 9.9 spp). By extrapolation the total species number on site increased from 15 to 18 spp to 29–37 spp. The abundance also greatly increased with 770 % more individuals on the Rivau. Similarly, on the 400 m Hutte stream, the extrapolated diversity increased from 31 to 38 spp to 35–43 spp; as well as the abundance with 475 % more individuals. These restoration projects created new habitats leading to local biodiversity enrichment and conservation success. More specifically, Coenagrion mercuriale (Odonata: Zygoptera), one of Europe's most threatened damselflies and listed in the European Habitats directive, successfully recolonized the Rivau stream and colonized the Hutte stream.

这项研究提供了成功的生物多样性保护修复项目的实例。在法国西部，皮纳尔国家自然保护区是一个受保护的湿地，散布着6000多个池塘。该湿地栖息着50种Odonata，因此是豆娘和蜻蜓保护的重要生物多样性地区。过去，在开采石灰岩时，高原的溪流是人为地以直线方式人工导流的，一直流向维恩河。最终，河流被生物质和沉积物阻塞，导致水主要流入地下。2011年，两个修复项目通过公开重新连接死水体（两个站点：Rivau（20 m）和Hutte）挖出并重建了失落的栖息地，如流水和蜿蜒（400 m）溪流）。自1995年以来，随着样带调查的进行，每年都要对Odonata物种的多样性和丰度进行监测，并且仍在继续。在恢复之前和之后比较多样性和丰度。由于增加了许多栖息地，因此增加了新的物种，这两个地点的丰度和物种多样性都增加了。Rivau上观察到的物种数量几乎翻了一番（从5.4个观察物种增加到9.9 spp）。通过外推，现场的总物种数量从15到18 spp增加到29-37 spp。里瓦（Rivau）的人口也大大增加了770％。同样，在400 m的Hutte流上，外推多样性从31 spp增加到35-43 spp；以及拥有更多475％的个人。这些恢复项目创造了新的栖息地，从而导致了当地生物多样性的丰富和保护的成功。进一步来说，欧洲最易受威胁的豆娘之一，被列为欧洲人居指令之一，Coenagrion mercuriale（Odonata：Zygoptera）成功地重新定居了Rivau河，并殖民了Hutte河。