Ecological evaluation of weir removal based on physical habitat simulations for macroinvertebrate community

Kim, Seung Ki; Choi, Sung-Uk

doi:10.1016/j.ecoleng.2019.08.003

Cited by 7 publications

(5 citation statements)

References 27 publications

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“…The removal of barriers to macroinvertebrate movement is another essential strategy for improving connectivity and supporting healthy macroinvertebrate communities in river ecosystems (Hastings et al . 2016; Kim & Choi 2019). Barriers include dams, weirs, and culverts, as well as less obvious impediments, such as sedimentation, excessive vegetation growth, or habitat fragmentation caused by land‐use changes.…”

Section: River Restoration Strategies For Macroinvertebrate Conservationmentioning

confidence: 99%

Macroinvertebrate conservation in river ecosystems: Challenges, restoration strategies, and integrated management approaches

Lim,

2023

Entomological Research

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River ecosystems face growing threats from human‐induced stressors, resulting in habitat degradation and biodiversity loss. Crucial to these ecosystems, macroinvertebrates maintain river health and functioning. In this review, we examine the challenges confronting macroinvertebrates, explore restoration strategies and management approaches, and shed light on knowledge gaps and future research directions. Habitat degradation, water pollution, climate change, and invasive species are discussed as key challenges. Various restoration strategies, such as in‐stream habitat restoration, flow regime restoration, riparian zone restoration, and connectivity restoration, are evaluated for macroinvertebrate conservation. Integrated catchment management, adaptive management, community‐based management, monitoring, and policy integration are highlighted as essential management approaches, and knowledge gaps in long‐term monitoring, innovative restoration techniques, climate change resilience, and policy incorporation are identified as areas calling for further research. Ultimately, a proactive, adaptable, and cooperative approach to river management will ensure macroinvertebrate conservation and sustainable river ecosystems.

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Section: River Restoration Strategies For Macroinvertebrate Conservationmentioning

confidence: 99%

Macroinvertebrate conservation in river ecosystems: Challenges, restoration strategies, and integrated management approaches

Lim,

2023

Entomological Research

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“…Since the early 1900s, nearly 1,800 small dams have been removed from rivers in the USA (Fox et al., 2022). In Europe, at least 4,000 dams and weirs have been removed since the mid‐1990s (Kim & Choi, 2019). Removal of small dams in tributaries can open up spawning and rearing habitats in previously inaccessible regions upstream, which has shown positive effects on fish diversity of the dammed mainstreams (Barbarossa et al., 2020; Lasne et al., 2015; Magilligan, Graber, et al., 2016; O'Connor et al., 2015; Y. Peng, Hong, et al., 2022).…”

Section: Fish Conservation Measures In Dammed Riversmentioning

confidence: 99%

River Damming Impacts on Fish Habitat and Associated Conservation Measures

Chen,

Li,

Lin

et al. 2023

Reviews of Geophysics

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River damming has brought great benefits to flood mitigation, energy and food production, and will continue to play a significant role in global energy supply, particularly in Asia, Africa, and South America. However, dams have extensively altered global river dynamics, including riverine connectivity, hydrological, thermal, sediment and solute regimes, and the channel morphology. These alterations have detrimental effects on the quality and quantity of fish habitat and associated impacts on aquatic life. Indeed, dams have been implicated in the decline of numerous fishes, emphasizing the need for effective conservation measures. Here, we present a global synthesis of critical issues concerning the impacts of river damming on physical fish habitats, with a particular focus on key fish species across continents. We also consider current fish conservation measures and their applicability in different contexts. Finally, we identify future research needs. The information presented herein will help support sustainable dam operation under the constraints of future climate change and human needs.

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“…Dams and weirs not only affect these hydraulic variables but also simplify the habitats of fish and macro-invertebrates, and some of them fail to adapt to the new conditions of the aquatic environment [2,[9][10][11]. Transverse constructions obstruct the longitudinal movements of these aquatic organisms in the process of feeding and reproduction, which leads to a decrease in their population [7,[9][10][11]; in our case, the endangered fish species that are protected by law are the Mediterranean barbel (Barbus meridionalis) and the Danubian longbarbel gudgeon (Gobio uranoscopus). Other creatures protected by law that live in the aquatic environment are the crested newt (Triturus cristatus) and the Yellow-bellied toad (Bombina variegata) [12].…”

Section: Introductionmentioning

confidence: 99%

“…The discontinuity of the thalweg slope upstream and downstream of the weir will gradually disappear. The removal of transversal hydrotechnical structures, in particular of weirs, is a common approach to restore the longitudinal connectivity of a river and improve the fragmented habitats of fish and macro-invertebrates [10,13]. Weir removal has been used successfully in England [14], Italy [4], and the United States; the latter has spent over USD 1 billion on river restoration [3], with the removal of transversal hydrotechnical constructions being practiced in South Korea as well [10].…”

Section: Introductionmentioning

confidence: 99%

Research on the Sustainable Development of the Bistrita Ardeleana River through the Resizing of Weirs

Moldovan

Micle

Hraniciuc

et al. 2022

Water

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The layout of water resources and the complex and rational use of them have an important role in the socioeconomic activities of an urban settlement. Transversal hydrotechnical constructions such as weirs reduce the longitudinal connectivity of rivers and streams, affecting river biodiversity as well as water quality. This paper presents an alternative method that will help restore connectivity. In order to choose the best solution, topographical measurements were taken with a total topographical station, and a professional drone was used to obtain an updated orthophoto plan. After processing the data obtained in the field, engineering software capable of simulating flow, sediment transport, and water quality in rivers was used. With the help of the software, two hypotheses were realized: hypothesis A, the case with only one weir in place, and hypothesis B, when we have the proposed case with the lowering of the height of the weir’s crest and the construction of three new control weirs downstream of it. In conclusion, the lowering of the current weir’s crest and the construction downstream of it of three new weirs of low height would have a favorable effect from an ecological and a morphological point of view, without very big consequences on the disturbance of the flow from a hydraulic point of view.

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Ecological evaluation of weir removal based on physical habitat simulations for macroinvertebrate community

Cited by 7 publications

References 27 publications

Macroinvertebrate conservation in river ecosystems: Challenges, restoration strategies, and integrated management approaches

Macroinvertebrate conservation in river ecosystems: Challenges, restoration strategies, and integrated management approaches

River Damming Impacts on Fish Habitat and Associated Conservation Measures

Research on the Sustainable Development of the Bistrita Ardeleana River through the Resizing of Weirs

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