Ecological Engineering最新文献

{"title":"Investigating the compensatory effect of legume reseeding on soil organic carbon loss under tillage management in a saline-alkali grassland in the semi-arid region","authors":"Yang Gao ,&nbsp;Yuqi Zhang ,&nbsp;Jian Liu ,&nbsp;Yu An ,&nbsp;Hongyuan Ma ,&nbsp;Shouzheng Tong","doi":"10.1016/j.ecoleng.2024.107441","DOIUrl":"10.1016/j.ecoleng.2024.107441","url":null,"abstract":"<div><div>Tillage and reseeding are recognized as effective near-natural restoration practices for degraded grasslands. Despite of ecological restoration efforts of these practices on degraded saline-alkali grasslands in the semi-arid Songnen Plain, the focus on soil functions, particularly carbon (C) accumulation, remains inadequate. This study implemented four restoration measures—tillage (T), tillage combined with <em>Astragalus adsurgens</em> reseeding (TR), no-tillage and reseeding (NR), and no-tillage (N)—on degraded saline-alkali grasslands in 2017. We investigated changes in plant community characteristics and species diversity, soil physical and chemical properties, and soil organic carbon (SOC) pool in 2019 (third-year post-restoration) and 2022 (sixth-year post-restoration). The results indicate that TR had the highest coverage, above-ground biomass (AGB), and below-ground biomass (BGB) in both surveys. From 2019 to 2022, NR exhibited the most pronounced increase in coverage, whereas AGB and BGB of TR achieved the largest increment. In terms of soil properties, the TR and T treatments decreased soil total nitrogen (SN) content and soil bulk density (SBD), and the TR and NR treatments decreased pH and EC. Although SOC content and storage (TSOC) values were lower in T and TR treatments in 2019, a compensation effect with highest C accumulation rate in TR was observed in 2022. Regression analysis showed significant positive correlations between TSOC and plant community height, coverage, AGB, species richness, and SN and soil phosphorus (SP) content. Structural equation models (SEMs) further indicated that tillage practices negatively impacted TSOC. In contrast, legume reseeding, through adjustments in plant density, positively impacted TSOC, with SWC playing a pivotal role. This study quantifies the impact of tillage combined with reseeding on SOC sequestration and provides critical scientific evidence for managing the natural-based restored grasslands in semi-arid regions.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"210 ","pages":"Article 107441"},"PeriodicalIF":3.9,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nature-based solutions for coastal dune restoration: The case study of AlgoBox in South Brittany, France","authors":"Mouncef Sedrati,&nbsp;Laura Dalour,&nbsp;Glen Bulot,&nbsp;Noé Metge","doi":"10.1016/j.ecoleng.2024.107440","DOIUrl":"10.1016/j.ecoleng.2024.107440","url":null,"abstract":"<div><div>Preventing marine submersion and coastal erosion is a major challenge in the most coastal areas because of increasing vulnerability of human issues. Awareness of the decline in biodiversity and degradation of coastal ecosystems has led to emergence of nature-based solutions, more sustainable and resilient than traditional coastal engineering. On sandy coasts, the “AlgoBox” system is a sustainable ecological solution for preserving the coastline and restoring dunes, first natural barriers against waves. This tool combines the use of sand trapping fence cases with filling by algae wrack. The addition of algae to the box helps to dampen waves and provides nutrients for plants colonization, responsible for fixing sediments. In this study, we examined the “AlgoBox” effectiveness on the dune-edge erosion belt and dune regeneration on two eroded beaches in Morbihan, France. Results of regular topographic dune-beach profile and vegetation colonization processes surveys indicate that these low-cost nature-based solutions have successfully increased sediment levels and regeneration dunes. Consequently, AlgoBox have had the positive effects of (1) stabilising the coastline and preventing it from retreating during storms (2) forming an embryonic dune and (3) enriching coastal vegetation.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"210 ","pages":"Article 107440"},"PeriodicalIF":3.9,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of different restoration years on soil carbon sequestration and water retention capacity in bamboo forest: A case study in Southwest China Karst","authors":"Liheng Pang ,&nbsp;Chaojie Tian ,&nbsp;Quanzhi Yuan ,&nbsp;Wei Deng","doi":"10.1016/j.ecoleng.2024.107434","DOIUrl":"10.1016/j.ecoleng.2024.107434","url":null,"abstract":"<div><div>The Grain for Green Program (GGP) is an ecological protection plan launched by China. In this context, much cultivated land in Southwest China Karst has been converted into bamboo forest to balance both ecological and economic benefits. This study selected typical areas in southern Sichuan Province and used natural bamboo forests (CK) as controls to analyze the changes in soil carbon sequestration and water retention capacity of bamboo forests with different restoration periods. The results showed that there was no significant change in soil mechanical composition during forest restoration. The soil bulk density (BD) showed a decreasing trend overall with the restoration period. The total porosity (P_t) and capillary porosity (P_c) showed a trend of first decreasing and then increasing with the increase of restoration years, while no obvious change pattern was found in non-capillary porosity (P_o). The variation characteristics of water retention capacity are similar to porosity, and returning farmland for 5 years can achieve good water retention performance, even higher than CK. The total organic carbon (TOC) and labile organic carbon (LOC) in the soil of bamboo forests after 20 years of returning farmland were significantly higher than those in 5 and 10 years of bamboo forests, and their organic carbon content was close to that of CK. It is worth noting that the soil organic carbon activity reached its optimal state after 10 years of returning farmland. To sum up, the implementation of the project of returning farmland to bamboo can effectively improve the soil carbon sequestration and water retention capacity. The research results provide a scientific basis for the optimization of the measures of the GGP, and help to promote the sustainable development in Southwest China Karst.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"210 ","pages":"Article 107434"},"PeriodicalIF":3.9,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ecological impact of single and semi-contiguous artificial rockpool installations on the assemblages and species richness of vertical seawalls","authors":"Roger J.H. Herbert ,&nbsp;Jessica R. Bone ,&nbsp;Alice E. Hall ,&nbsp;Stephen J. Hawkins ,&nbsp;Rick Stafford","doi":"10.1016/j.ecoleng.2024.107432","DOIUrl":"10.1016/j.ecoleng.2024.107432","url":null,"abstract":"<div><div>Local improvements to species diversity through the creation of microhabitat features have been adopted as an approach for “Greening Grey Infrastructure” (GGI) in urbanised coastal ecosystems. To confidently implement these enhancements asset managers and engineers need quantitative information on the value of different feature types, densities, and configurations. We compared the biodiversity benefits of horizontal arrays of semi-contiguous 3 and 5 artificial rockpools with single isolated rockpool units and unenhanced sections of seawall. Rockpools were fixed within seawall sections 2 m wide at Mean High Water Neap Tide Level. At low tide, biota was monitored inside the pools, on the side of the pool units, the sea wall adjacent to the rockpools and in sea wall zones above and below the pools. After 36 months, species richness (all zones combined) of seawall sections with five rockpools was up to four times greater than controls and included protected and non-indigenous species. Increased richness was attributable to a higher density of rockpools and not rockpool contiguity. Grazers attracted to areas between and above rockpools modified assemblages that may limit persistence of algae. At one site, recovery of brown algae following disturbance during rockpool installation remained incomplete after 36 months. Benefits of arrays of semi-contiguous pools remain unclear, and deployment of individual rockpools (or similar enhancements) over a larger habitat area, that experience a wider range of conditions, may be at least as valuable. Quantifying species richness per unit size/ area of structure should assist managers and the development of metrics designed to measure ecological benefits in GGI.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"210 ","pages":"Article 107432"},"PeriodicalIF":3.9,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The use of gabions as an eco-engineering approach to enhance estuarine fish habitats in urbanised waterways","authors":"J.L. Seath ,&nbsp;L.B. Firth ,&nbsp;P.W. Froneman ,&nbsp;L. Claassens","doi":"10.1016/j.ecoleng.2024.107431","DOIUrl":"10.1016/j.ecoleng.2024.107431","url":null,"abstract":"<div><div>Anthropogenic activities are often concentrated around coastal ecosystems. Harbours and marinas comprising artificial structures with steeper orientations and reduced topographic complexities than natural ecosystems contribute to habitat alteration and biodiversity loss. Ecological engineering aims to mitigate these impacts by integrating ecological principles into coastal development to enhance habitat potential and improve biodiversity. This study investigated the potential of gabions (rock-filled wire mesh baskets) to enhance fish abundance and biodiversity by comparing these structures to conventional seawalls in an urbanised marina in Knysna, South Africa. Remote underwater video systems were used to determine fish diversity, abundance and composition over a 12-month period from August 2020 to August 2021. Overall, a significantly greater abundance and diversity of fish were associated with gabions compared to seawalls. Importantly, the gabions supported an endangered species, the Knysna seahorse (<em>Hippocampus capensis</em>), and two near threatened species recorded only on the gabions. This study highlights the efficacy of using structurally complex gabions as a viable ecoengineering alternative to less complex seawalls to enhance fish habitat.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"210 ","pages":"Article 107431"},"PeriodicalIF":3.9,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A study on classification of vegetation zones based on flow regimes in Riparian wetlands","authors":"Hoyong Lee ,&nbsp;Soojun Kim ,&nbsp;Jaewon Kwak ,&nbsp;Junhyeong Lee ,&nbsp;Hung Soo Kim","doi":"10.1016/j.ecoleng.2024.107429","DOIUrl":"10.1016/j.ecoleng.2024.107429","url":null,"abstract":"<div><div>Wetlands play an important role in cycling water resources, organic matter, water purification, and ecosystem conservation. Understanding flow regimes is essential for effective wetland management because it significantly influences wetland succession and circulation. This study aims to develop a methodology for quantifying flow regimes of the Jangdan Wetland (Imjin River) and the Binae Wetland (Namhan River). The study utilized water level duration curve (LDC) based on historical water level data from 2008 to 2023 for the Binae Wetland and from 2003 to 2023 for the Jangdan Wetland to analyze hydrological flow regimes. Flow regime diagrams describing the inundation characteristics over time, were then constructed using the LDC and the digital elevation models (DEM) of the wetlands. To understand the relationship between vegetation communities and hydrologic regime in the wetland, this study classified nine vegetation zones based on the tolerance of associated plant species to inundation (in weeks or months) reported for plant species in previous studies. The study revealed that the Jangdan Wetland were dry primarily on most days but experienced complete inundation during flooding events. In contrast, the Binae Wetlands were found to be frequently inundated, with approximately 40 % of the area experiencing regular flooding, while 20 % of the higher elevation areas were only inundated once every few years.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"210 ","pages":"Article 107429"},"PeriodicalIF":3.9,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Riparian vegetation surveys for roughness estimation” [Ecological Engineering volume 209 (December 2024) 107414]","authors":"A. Signorile,&nbsp;R. Saracino,&nbsp;A. Dani,&nbsp;M. Rillo Migliorini Giovannini,&nbsp;F. Preti","doi":"10.1016/j.ecoleng.2024.107428","DOIUrl":"10.1016/j.ecoleng.2024.107428","url":null,"abstract":"","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"209 ","pages":"Article 107428"},"PeriodicalIF":3.9,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydromechanical behaviour of a slope reinforced by grass roots under rainfall conditions","authors":"Gayuh Aji Prasetyaningtiyas ,&nbsp;Viroon Kamchoom ,&nbsp;Anthony Kwan Leung ,&nbsp;Suched Likitlersuang","doi":"10.1016/j.ecoleng.2024.107427","DOIUrl":"10.1016/j.ecoleng.2024.107427","url":null,"abstract":"<div><div>Soil bioengineering using vegetation has been considered an environmentally friendly solution to improve slope stability. Although several studies have demonstrated the contribution of vegetation to slope stability, a gap in understanding the mechanisms of grass root–soil interactions under rainfall conditions remains. This study investigates the effects of the roots of vetiver grass (<em>Chrysopogon zizanioides</em>) on the hydromechanical behaviour of an unsaturated soil slope using the centrifuge modelling technique. The changes in pore water pressure and slope deformation were monitored during the test. The monitored data were subsequently back-analysed and interpreted using seepage–stability analyses. In addition, this study focused on evaluating the effect of roots on slope stability, considering safety and pore water pressure during rainfall. Results revealed that the vetiver roots remarkably affected the initial suction of the slope by increasing the soil's air-entry value. The increased suction and the additional cohesion provided by the roots enhanced slope stability under rainfall conditions.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"209 ","pages":"Article 107427"},"PeriodicalIF":3.9,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Entrance geometries of closed-conduit fishways to attract juvenile fishes","authors":"Maryam Farzadkhoo ,&nbsp;Darren Jadraque ,&nbsp;Richard T. Kingsford ,&nbsp;Iain M. Suthers ,&nbsp;Stefan Felder","doi":"10.1016/j.ecoleng.2024.107421","DOIUrl":"10.1016/j.ecoleng.2024.107421","url":null,"abstract":"<div><div>Fishway effectiveness relies on successful fish attraction and entry, yet limited research has explored the impact of entrance design on fish attraction. This study addresses this knowledge gap by evaluating different entrance geometries, water velocity, and related characteristics of flow for attracting Australian native fishes into closed conduit fishways. Novel laboratory experiments combined detailed hydrodynamic measurements of the velocity fields with live fish experiments, using silver perch (<em>Bidyanus bidyanus</em>) and Australian bass (<em>Percalates novemaculeata</em>). Four entry geometries comprising a circular entrance (FO), a slotted entrance (slot), a semi-circular entrance (SC), and a submerged quarter circle (QC) were tested. Three attraction velocity configurations of (i) <em>V</em>_<em>a</em> = 0 m/s, (ii) constant velocity (<em>V</em>_<em>a</em> = 0.15 m/s at the entrance for each of the entrance geometries); and (iii) constant momentum flux (0.12 <em>N</em> for each entrance geometry) was examined at a water depth of <em>d</em> = 0.18 m. There were distinct differences in the attraction flow patterns between entrance geometries. The strongest turbulent kinetic energy (<em>TKE</em>) values were found near the channel bed at <em>Z</em> = 0.1 <em>d,</em> with <em>TKE</em> significantly reduced by up to 60 % in the upper layer (<em>Z</em> = 0.7 <em>d</em>). The swimming trajectories for silver perch and Australian bass varied with different entrance geometries<em>.</em> While in the SC entrance, most silver perch used the jet sidewall, for the QC entrance, silver perch displayed a preference for swimming along the middle of the channel and along the non-jet sidewall, suggesting that the flow submergence for the QC entrance may have affected fish response. The presence of silver perch and Australian bass in the entrance tube clearly suggests that they can be attracted to diverse geometries without exhibiting a distinct preference for particular combinations of entrance geometries and velocities. <em>TKE</em> values &lt;160 cm²/s² were recommended for attracting juvenile silver perch and Australian bass with longer residence time in the entrance tube.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"209 ","pages":"Article 107421"},"PeriodicalIF":3.9,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142437953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the effect of local characteristics on environmental impacts of Constructed Wetlands by regionalized life cycle assessment","authors":"Lineker Max Goulart Coelho","doi":"10.1016/j.ecoleng.2024.107423","DOIUrl":"10.1016/j.ecoleng.2024.107423","url":null,"abstract":"<div><div>The goal of this paper is to assess the effect of regional characteristics on the environmental sustainability of Horizontal Subsurface Flow Constructed Wetlands using comparative regionalized Life Cycle Assessment. Regionalizaton was implemented in terms of input and outputs values, as well as considering impact assessment methods that consider regional aspects to estimate the environmental impact results. A case study for a Horizontal Subsurface Flow Constructed Wetlands treating municipal wastewater was assumed, and the system was assessed considering the installation of the constructed wetland in 5 different countries with distinct characteristics in terms of technologies, geographic location, climate conditions and electricity mix. The comparative life cycle assessment results showed important variations among the countries, which highlights the importance of taking into account a regionalized approach in order to assess the local specificities properly. An average relative standard deviation of 59 % for all regionalized impact categories was identified when comparing the LCA for the case study for different countries. So, the study successfully showed the importance of regionalization in constructed wetlands assignments and provided relevant recommendations for system enhancements in order to reduce environmental impact according to regional characteristics.</div></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"209 ","pages":"Article 107423"},"PeriodicalIF":3.9,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142437954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}