How restoration engineering measures can enhance the ecological value of intertidal flats

IF 2.8 3区 环境科学与生态学 Q2 ECOLOGY
Lauren E. Wiesebron, Chui H. Cheng, P. Lodewijk M. de Vet, Brenda Walles, Susanne van Donk, Jeroen van Dalen, Wietse van de Lageweg, Tom Ysebaert, Tjeerd J. Bouma
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Abstract

Restoration engineering measures, such as managed realignments or building groins, modify the environmental characteristics of coastal intertidal ecosystems. Creating physical modifications that are beneficial to an intertidal system's ecology necessitates an in‐depth understanding of the relationships between the abiotic and biotic components of a given intertidal habitat. In this study, we evaluate how hydrodynamics and sediment characteristics drive the development of the benthic macrofauna community during the first 5 years following engineering measures to enhance benthic macrofauna diversity at three locations. The creation of low‐energy habitats through groins (Knuitershoek and Baalhoek) and a managed realignment dike breach (Perkpolder) led to the accumulation of fine sediments in all three impact sites. Biomass of benthic macrofauna quickly increased between 2016 and 2020, with successional processes being more important in Perkpolder, where the habitat was started completely from scratch due to a managed realignment, than at Knuitershoek or Baalhoek, where habitat conditions were improved by adding groins. In addition, the density of benthos‐eating birds, especially oystercatchers, increased at some of the modified sites. While a low‐energy habitat may harbor more diverse assemblages of benthic macrofauna than a highly dynamic one, the extremely high silt content, which is typical for low‐energy habitats, may slow benthic community development. The observed increase of biomass at our impact sites highlights the value of the interventions, while the delays in the response of the benthic macrofauna community emphasizes the need for extensive monitoring both in time and space and the identification of underlying abiotic–biotic mechanisms.
修复工程措施如何提高潮间带滩涂的生态价值
修复工程措施,例如有管理的调整或建造护岸,会改变沿岸潮间带生态系统的环境特 征。要对潮间带系统的生态环境进行有益的物理改造,就必须深入了解潮间带生境的非生物成分和生物成分之间的关系。在本研究中,我们评估了在三个地点采取工程措施提高底栖大型底栖动物多样性后的头 5 年中,水动力和沉积物特征如何推动底栖大型底栖动物群落的发展。通过海槽(Knuitershoek 和 Baalhoek)和有管理的调整堤坝缺口(Perkpolder)创造低能量栖息地,导致细小沉积物在所有三个影响地点积累。底栖大型底栖动物的生物量在 2016 年至 2020 年间迅速增加,与 Knuitershoek 和 Baalhoek 相比,Perkpolder 的演替过程更为重要,因为那里的生境因有管理的调整而完全从零开始,而 Knuitershoek 和 Baalhoek 则通过增加沟槽改善了生境条件。此外,在一些经过改造的地点,食底栖鸟类的密度有所增加,尤其是蛎鹬。虽然低能耗生境可能比高能耗生境蕴藏着更多样化的底栖大型动物群落,但低能耗生境特有的极高淤泥含量可能会减缓底栖生物群落的发展。在我们的影响地点观察到的生物量增加凸显了干预措施的价值,而底栖大型水底生物群落反应的延迟则强调了在时间和空间上进行广泛监测的必要性,以及确定潜在的非生物-生物机制的必要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Restoration Ecology
Restoration Ecology 环境科学-生态学
CiteScore
6.50
自引率
15.60%
发文量
226
审稿时长
12-24 weeks
期刊介绍: Restoration Ecology fosters the exchange of ideas among the many disciplines involved with ecological restoration. Addressing global concerns and communicating them to the international research community and restoration practitioners, the journal is at the forefront of a vital new direction in science, ecology, and policy. Original papers describe experimental, observational, and theoretical studies on terrestrial, marine, and freshwater systems, and are considered without taxonomic bias. Contributions span the natural sciences, including ecological and biological aspects, as well as the restoration of soil, air and water when set in an ecological context; and the social sciences, including cultural, philosophical, political, educational, economic and historical aspects. Edited by a distinguished panel, the journal continues to be a major conduit for researchers to publish their findings in the fight to not only halt ecological damage, but also to ultimately reverse it.
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