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Floristic and Macroinvertebrate Responses to Different Wetland Restoration Techniques in Southeastern Wisconsin
Wetlands ( IF 1.8 ) Pub Date : 2020-09-12 , DOI: 10.1007/s13157-020-01269-6
Rachel Schultz , Jacob Straub , Marissa Kaminski , Abbie Ebert

Assessments of wetland restoration quality, especially comparisons among restoration techniques, are essential to adaptive management, but are rarely reported. We evaluated wetlands in southeastern Wisconsin that were restored using different hydrological techniques along with wetlands in two reference groups: wetlands without hydrological modification and Waterfowl Production Areas. Our objectives were 1) to compare condition of wetlands using indices for plant communities and macroinvertebrates and 2) evaluate provisioning of macroinvertebrates for waterfowl broods as a measure of habitat quality. Overall, floristic quality of sedge meadows and emergent marshes was poor in restored wetlands (weighted mean C-values were 1.55 ± 0.13 (SE) and 1.47 ± 0.25, respectively); however, sedge meadow quality was greater in wetlands without surface modification (weighted mean C-value = 3.43 ± 0.82). On a scale from “excellent” to “very poor”, we classified condition of open water communities as “good” based on the macroinvertebrate index across all restoration categories. Density and abundance of macroinvertebrate taxa preferred by waterfowl broods were similar across restoration categories and indicated that wetland basins provide ample food resources. We recommend that conservation planners and wetland managers state quantifiable, appropriate objectives for restoration ahead of implementation and address conflicting objectives with stakeholders.



中文翻译:

威斯康星州东南部不同湿地恢复技术对植物和大型无脊椎动物的响应

湿地恢复质量的评估,尤其是恢复技术之间的比较,对于适应性管理至关重要,但鲜有报道。我们评估了威斯康星州东南部的湿地,这些湿地已使用不同的水文技术与两个参考组中的湿地一起进行了评估:未进行水文改造的湿地和水禽生产区。我们的目标是:1)使用植物群落和大型无脊椎动物的指数来比较湿地的状况,以及2)评价水禽育种中大型无脊椎动物的供应量以衡量栖息地质量。总体而言,在恢复的湿地中,莎草草甸和新兴湿地的植物质量较差(加权平均C值分别为1.55±0.13(SE)和1.47±0.25);然而,在没有进行表面修饰的湿地中,莎草草甸的质量更高(加权平均C值= 3.43±0.82)。从“优”到“极差”,我们根据所有恢复类别的大型无脊椎动物指数将开放水域的状况分类为“良好”。在恢复类别中,水禽类群首选的大型无脊椎动物类群的密度和丰度相似,表明湿地盆地提供了充足的食物资源。我们建议保护规划者和湿地管理者在实施之前陈述可量化的适当恢复目标,并解决与利益相关者冲突的目标。我们根据所有恢复类别的大型无脊椎动物指数将开放水域社区的状况分类为“良好”。在恢复类别中,水禽类群首选的大型无脊椎动物类群的密度和丰度相似,表明湿地盆地提供了充足的食物资源。我们建议保护规划者和湿地管理者在实施之前陈述可量化的适当恢复目标,并解决与利益相关者冲突的目标。我们基于所有恢复类别的大型无脊椎动物指数将开放水域的社区状况归类为“良好”。在恢复类别中,水禽类群首选的大型无脊椎动物类群的密度和丰度相似,表明湿地盆地提供了充足的食物资源。我们建议保护规划者和湿地管理者在实施之前陈述可量化的适当恢复目标,并解决与利益相关者冲突的目标。

更新日期:2020-09-13
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