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Change in sediment features and the macroinvertebrate community within an estuarine ecosystem two years post‐restoration
Ecosphere ( IF 2.7 ) Pub Date : 2020-07-30 , DOI: 10.1002/ecs2.3206
E. M. Roberts 1 , S. D. Stroshein 2 , L. I. Bendell 2
Affiliation  

Our objective was to assess the response of an estuarine ecosystem to restoration efforts, two years post‐restoration. Sediment attributes of particle size distribution (PSD), %LOI, water content and amounts of fine wood debris (FWD), and the macroinvertebrate community were compared among three sites, two reference and the recently restored site. The restored region had been previously used as a log sorting facility. As indicated by PSD, the restored site showed signs of recovery. However, the macroinvertebrate community had still not responded to restoration efforts. Sediments of reference sites were comprised of fine sand, and the macroinvertebrate community was dominated by Macoma spp. By contrast, at the restored site, sediments were mainly comprised of silt followed by fine sand, Macoma spp. was absent, and the main macroinvertebrate was Glycera americana, a polychaeta characteristic of disturbed regions. The restored site still contained significance amounts of FWD as compared to the two reference sites attributed to its previous use. Although still early in its recovery stage, active restoration did have a positive effect and will have likely kick started the region toward recovery and further follow‐up in five years is recommended.

中文翻译:

恢复后两年,河口生态系统内沉积物特征和大型无脊椎动物群落的变化

我们的目标是评估恢复后两年的河口生态系统对恢复工作的响应。在三个地点,两个参考地点和最近恢复的地点之间比较了粒径分布(PSD),%LOI,水含量和细木屑(FWD)的沉积物属性以及大型无脊椎动物群落。恢复的区域以前曾用作日志分类工具。如PSD所示,恢复的部位显示出恢复的迹象。但是,大型无脊椎动物社区仍未对恢复工作做出回应。参考点的沉积物由细沙组成,大型无脊椎动物群落以Macoma spp为主。相反,在恢复的地点,沉积物主要由淤泥组成,其次是细沙Macomaspp。不存在,主要的大型无脊椎动物是美国甘油,这是受干扰地区的一种多壳动物。与归因于其先前使用的两个参考站点相比,恢复的站点仍包含重要数量的FWD。尽管仍处于恢复的早期阶段,但积极的恢复确实起到了积极的作用,可能会开始使该地区开始恢复,并建议在五年内进一步采取后续行动。
更新日期:2020-07-30
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