Ecohydrology最新文献

Assessment of Changes in River Flow and Ecohydrological Indicators From the Viewpoint of Changing Landscape Patterns in the Jialing River Basin, China

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-02-26 DOI: 10.1002/eco.70001

Gaozhen Wang, Wenxian Guo, Hongxiang Wang, Lintong Huang, Fengtian Hong, Yinchu Ma, Yajuan Ma, Handong Ye, Xiaohan Zhang, Jiangnan Yang

{"title":"Assessment of Changes in River Flow and Ecohydrological Indicators From the Viewpoint of Changing Landscape Patterns in the Jialing River Basin, China","authors":"Gaozhen Wang, Wenxian Guo, Hongxiang Wang, Lintong Huang, Fengtian Hong, Yinchu Ma, Yajuan Ma, Handong Ye, Xiaohan Zhang, Jiangnan Yang","doi":"10.1002/eco.70001","DOIUrl":"https://doi.org/10.1002/eco.70001","url":null,"abstract":"<div>\u0000 \u0000 <p>Land use alterations significantly affect the hydrological processes in basins. Few studies, however, examine how future runoff variations and river ecohydrological indices may be affected by changes in regional land use from the standpoint of landscape pattern change (LPC). In this research, we combined historical land use data and future data modelled by the PLUS model to isolate six major landscape pattern indices by principal component analysis, which were used together with meteorological data to drive the long short-term memory network (LSTM) for runoff simulation. Therefore, the daily flow processes were obtained under different scenarios. The driving mechanisms of runoff changes and the changes in ecohydrological indicators were explored in conjunction with the daily flow process. The study shows that from 1980 to 2030, the Jialing River Basin's pattern of land use has seen substantial changes over time, and the landscape pattern tends to be further fragmented in 2030, the influence of the fragmentation of the pattern in the landscape makes the daily flow under the LSTM model's prediction of the natural development scenario smaller than that of the ecological protection scenario, the scenario backtracking method reveals that the LPC is the main driver of the future runoff change, and the changes and ecological impacts of river ecohydrological indicators were different in different scenarios. The study's findings can act as a foundation for land use planning, regulation of terrace reservoirs and sustainable development in the Jialing River Basin (JRB).</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Ecosystem Services Tradeoffs and Synergies Across Drought Gradients in the Middle Reaches of the Yellow River Basin: A Time Scale Perspective

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-02-26 DOI: 10.1002/eco.70006

Xiaoliang Shi, Xi Chen, Hao Ding, Dan Zhang, Xinshuang Wang

{"title":"Ecosystem Services Tradeoffs and Synergies Across Drought Gradients in the Middle Reaches of the Yellow River Basin: A Time Scale Perspective","authors":"Xiaoliang Shi, Xi Chen, Hao Ding, Dan Zhang, Xinshuang Wang","doi":"10.1002/eco.70006","DOIUrl":"https://doi.org/10.1002/eco.70006","url":null,"abstract":"<div>\u0000 \u0000 <p>In the context of global climate change, understanding the tradeoffs and synergies between ecosystem services (ESs) is essential for regional ecological management and sustainable development. This study simulated net primary productivity (NPP) and quick flow (QF) in the Middle Reaches of the Yellow River Basin (MRYRB) in 2000 and 2020, utilizing the Carnegie–Ames–Stanford Approach (CASA) and Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) models to assess ESs related to carbon sequestration (CS) and water yield (WY). The synergistic multi-temporal scale changes in ESs tradeoffs under different drought conditions were assessed by delineating regions with different drought frequencies. The results showed that (1) the mean NPP in the MRYRB increased from 189.03 g C/m<sup>2</sup> in 2000 to 335.94 g C/m<sup>2</sup> in 2020, reflecting a 77.71% rise, while the mean annual QF escalated from 41.20 mm in 2000 to 59.59 mm in 2020, marking an increase of 44.64%; (2) on a monthly scale, the tradeoff and synergy relationships exhibited distinct seasonal variations, with tradeoffs prevailing throughout the year and a shift from tradeoff to synergy in CS and WY during the summer and fall. On an annual scale, synergy was the dominant relationship; (3) the intensity of tradeoffs and synergies varied by drought gradients, with the highest intensity observed in high-frequency drought areas at the monthly scale, whereas, on an annual scale, low-frequency drought areas exhibited the strongest tradeoffs and synergies. This study provides an in-depth analysis of the interactions between ESs under varying drought conditions across different time scales. The findings highlight the distinct differences in tradeoffs and synergies of ESs, offering valuable scientific insights for the coordinated management of regional ecosystems.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

A Continuous Semi-nonparametric Isotope-Based Mixing Model for Multimodal Water Uptake Patterns

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-02-25 DOI: 10.1002/eco.70003

Eric J. Neil, Han Fu, Bingcheng Si

{"title":"A Continuous Semi-nonparametric Isotope-Based Mixing Model for Multimodal Water Uptake Patterns","authors":"Eric J. Neil, Han Fu, Bingcheng Si","doi":"10.1002/eco.70003","DOIUrl":"https://doi.org/10.1002/eco.70003","url":null,"abstract":"<p>Isotope mixing models have become increasingly prevalent in the partitioning of root water uptake. However, many models fail to incorporate site physical information in a physically meaningful manner, whereas others adopt discrete approaches to segmenting the soil profile rather than continuous approaches that aptly treat the soil as a continuum of physical properties and conditions. Here, we present the novel ‘multimodal physically-based root water uptake isotope mixing estimation’ model (Multi-PRIME). The model utilizes a flexible, continuous and multimodal probability density function in conjunction with water-stable isotopes and additional site physical information, combined in a process-based linear mixing framework. To evaluate the approach, estimates of water uptake from boreal forest <i>Pinus banksiana</i> trees were compared with those of the PRIME and MixSIAR approaches. The models yielded comparable results; however, because of the highly flexible nature of its semi-nonparametric water uptake function, Multi-PRIME reduced the bias and uncertainty associated with soil segmentation of the discrete model MixSIAR and with the specification of parametric functions and initial parameter values of the PRIME model. Furthermore, the multimodal nature of Multi-PRIME provided a superior ability to describe water uptake patterns in cases with multiple potential source regions of uptake. In addition, due to its continuous and process-based nature, Multi-PRIME surpassed the discrete, empirically-based MixSIAR in both accuracy and certainty. These findings illustrate the benefits of adopting a process-based modelling framework that utilizes a semi-nonparametric, continuous and multimodal water uptake function, thereby providing an improvement in our ability to confidently estimate water uptake apportionment.</p>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eco.70003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Mesohabitat Spawning Preference of the Anadromous Twaite Shad (Alosa fallax, Lacépède 1803) in the Tagliamento River (Italy)

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-02-24 DOI: 10.1002/eco.70010

Giovanni Negro, Davide Lesa, Marco Bertoli, Alessandro Guglielmetto, Beatrice Pinna, Simone Forte, Claudio Spadavecchia, Paolo Maschio, Elisabetta Pizzul, Paolo Vezza

{"title":"Mesohabitat Spawning Preference of the Anadromous Twaite Shad (Alosa fallax, Lacépède 1803) in the Tagliamento River (Italy)","authors":"Giovanni Negro, Davide Lesa, Marco Bertoli, Alessandro Guglielmetto, Beatrice Pinna, Simone Forte, Claudio Spadavecchia, Paolo Maschio, Elisabetta Pizzul, Paolo Vezza","doi":"10.1002/eco.70010","DOIUrl":"https://doi.org/10.1002/eco.70010","url":null,"abstract":"<p><i>Alosa fallax</i> (Lacépède, 1803) is an anadromous fish which utilizes European rivers for spawning. As many anadromous species, Twaite shad populations are declining due to river damming and hydromorphological alterations, which impact their spawning sites. In this study, we developed mesohabitat suitability criteria for the spawning period of <i>A. fallax</i> by analysing the geomorphic units (GUs), with their local habitat attribute, in which the fish prefers to spawn. The study was conducted in the Tagliamento River (NE Italy). Habitat depiction was performed following the MesoHABitat SImulation Model (MesoHABSIM) approach. High-resolution spatial information from Uncrewed Aerial Systems (UAS), a two-dimensional (2D) hydrodynamic model and field data collected during the spawning period were utilized for habitat attribute evaluation. The association between spawning sites and GUs characteristics was explored by training a classification random forest (RF) model. The final parsimonious RF model demonstrated high accuracy (98.8%) and true skill statistic (97.6%), indicating that <i>A. fallax</i> prefers glides and riffles with shallow depths (0.15–0.45 m), moderate current velocities (0.30–0.75 m/s) and small-sized sediment (diameter 0.2–6 cm) for spawning. Using an infrared camera, 72 surface mating events were distinctly recorded between 11.30 PM and 02.15 AM over two nights, demonstrating the technique's suitability for observing shad mating activity. The video analysis revealed that the monitored <i>A. fallax</i> population exhibited similar mating behaviour to other European shads (e.g., <i>Alosa alosa</i>). This study provides useful insights to develop novel management approaches for preserving or restoring the spawning habitat of the <i>A. fallax</i>, supporting its conservation.</p>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eco.70010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Filling the Gaps: A Bayesian Mixture Model for Imputing Missing Soil Water Content Data

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-02-10 DOI: 10.1002/eco.70004

Kiona Ogle, Emma Reich, Kimberly Samuels-Crow, Marcy Litvak, John B. Bradford, Daniel R. Schlaepfer, Megan Devan

{"title":"Filling the Gaps: A Bayesian Mixture Model for Imputing Missing Soil Water Content Data","authors":"Kiona Ogle, Emma Reich, Kimberly Samuels-Crow, Marcy Litvak, John B. Bradford, Daniel R. Schlaepfer, Megan Devan","doi":"10.1002/eco.70004","DOIUrl":"https://doi.org/10.1002/eco.70004","url":null,"abstract":"<div>\u0000 \u0000 <p>Soil water content (SWC) data are central to evaluating how soil moisture varies over time and space and influences critical plant and ecosystem functions, especially in water-limited drylands. However, sensors that record SWC at high frequencies often malfunction, leading to incomplete timeseries and limiting our understanding of dryland ecosystem dynamics. We developed an analytical approach to impute missing SWC data, which we tested at six eddy flux tower sites along an elevation gradient in the southwestern United States. We impute missing data as a mixture of linearly interpolated SWC between the observed endpoints of a missing data gap and SWC simulated by an ecosystem water balance model (SOILWAT2). Within a Bayesian framework, we allowed the relative utility (mixture weight) of each component (linearly interpolated vs. SOILWAT2) to vary by depth, site and gap characteristics. We explored “fixed” weights versus “dynamic” weights that vary as a function of cumulative precipitation, average temperature, and time since the start of the gap. Both models estimated missing SWC data well (<i>R</i><sup>2</sup> = 0.70–0.88 vs. 0.75–0.91 for fixed vs. dynamic weights, respectively), but the utility of linearly interpolated versus SOILWAT2 values depended on site and depth. SOILWAT2 was more useful for more arid sites, shallower depths, longer and warmer gaps and gaps that received greater precipitation. Overall, the mixture model reliably gap-fills SWC, while lending insight into processes governing SWC dynamics. This approach to impute missing data could be adapted to accommodate more than two mixture components and other types of environmental timeseries.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143380598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Effect of Forest Management Practices on Water Balance Across a Water–Energy Gradient in the Upper Kings River Basin, USA

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-02-05 DOI: 10.1002/eco.2753

Stefano Casirati, Martha H. Conklin, Saswata Nandi, Mohammad Safeeq

{"title":"Effect of Forest Management Practices on Water Balance Across a Water–Energy Gradient in the Upper Kings River Basin, USA","authors":"Stefano Casirati, Martha H. Conklin, Saswata Nandi, Mohammad Safeeq","doi":"10.1002/eco.2753","DOIUrl":"https://doi.org/10.1002/eco.2753","url":null,"abstract":"<p>Headwater watersheds and forests play a crucial role in ensuring water security for the western United States. Reducing forest biomass from the current overgrown forests can mitigate the severity and impact of wildfires and offer additional competing ecohydrological benefits. A reduction in canopy interception and transpiration following forest treatments can lead to an increase in available water for the remaining trees and runoff. However, the impact of forest management on water balance can be highly variable due to differences in climate, topography, location and vegetation. In this study, we used the Soil Water Assessment Tool Plus model to investigate how decisions regarding location, intensity and scale of forest treatments can affect both evapotranspiration and streamflow in a large watershed such as the upper Kings River Basin (3998 km<sup>2</sup>). The model was parameterized using a multiobjective calibration of streamflow, snow water equivalent and evapotranspiration. Various forest treatment scenarios were simulated across different years and regions in the landscape. Modelling results show that during dry years, streamflow gains from biomass reduction are primarily originated from energy-limited regions (i.e., 82% of total streamflow increase in the first year). In water-limited regions, the water is prioritized for sustaining remaining trees, improving forest health and recharging subsurface storage, rather than increasing streamflow. During wet years, the contribution to streamflow from biomass reduction comes from both energy- and water-limited areas. These findings emphasize the importance of evaluating forest treatments on a larger scale. The competing benefits for forests and downstream users are driven by the energy and water limitations of the vegetation targeted by forest treatments, as well as the climate variability that modulates the water availability and forest recovery time.</p>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eco.2753","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143248419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Substantial Decline in the Groundwater in the Ten Kongduis Basin in the Loess Plateau During 2001–2020

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-02-05 DOI: 10.1002/eco.2764

Jinkai Luan, Xiaojie Li, Shahid Naeem, Amit Kumar, Ping Miao, Ruidong Wang, Zhenqi Yang, Hongli Ma, Ning Ma

{"title":"Substantial Decline in the Groundwater in the Ten Kongduis Basin in the Loess Plateau During 2001–2020","authors":"Jinkai Luan, Xiaojie Li, Shahid Naeem, Amit Kumar, Ping Miao, Ruidong Wang, Zhenqi Yang, Hongli Ma, Ning Ma","doi":"10.1002/eco.2764","DOIUrl":"https://doi.org/10.1002/eco.2764","url":null,"abstract":"<div>\u0000 \u0000 <p>The Loess Plateau has experienced obvious greening because of anthropogenically induced vegetation restoration. However, the impact of ecological restoration on groundwater storage over the past two decades remains unclear, though it is widely known that the growth of plants in this region depends heavily on groundwater. Such a knowledge gap is partly due to the scarcity of groundwater monitoring data. Here, this study reconstructed the groundwater level records in a typical basin in the Loess Plateau (the Ten Kongduis basin) spanning from 2001 to 2020 using an emergent relationship between the cumulative surface water fluxes over a 12-month moving window and the groundwater level changes. The long-term reconstruction suggests a persistent decreasing trend in the groundwater level from 2001 to 2020, with a short period of recovery observed between 2011 and 2013. In particular, the declining trend notably intensified after 2013, indicating an accelerated depletion of groundwater in the most recent few years. Further attribution analysis suggests that the decrease in groundwater levels was primarily attributed to the increasing evapotranspiration because of extensive vegetation restoration. Additionally, the development and utilization of regional groundwater resources also play an important role in this phenomenon. Our results provide crucial insights into the management and utilization of groundwater resources in the Loess Plateau, thus highlighting that a more sustainable strategy for future adaptation must be planned in this water-scarce region.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143248420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Ecohydrological Engineering for the Sustainable Management of Water–Biota Interactions

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-02-04 DOI: 10.1002/eco.70002

Saverio Perri, Simon Levin, Amilcare Porporato

{"title":"Ecohydrological Engineering for the Sustainable Management of Water–Biota Interactions","authors":"Saverio Perri, Simon Levin, Amilcare Porporato","doi":"10.1002/eco.70002","DOIUrl":"https://doi.org/10.1002/eco.70002","url":null,"abstract":"<p>Ecohydrology engineering provides a valuable framework for addressing emerging environmental challenges by integrating ecological and environmental engineering principles. In this study, we discuss the potential of parsimonious, physically based ecohydrological models through the lens of three case studies: sustainable irrigation, urban heat island mitigation via green roofs and mangrove restoration for climate change mitigation. First, we investigate sustainable irrigation strategies, illustrating the trade-offs between water conservation and soil salinization. This highlights the delicate balance required to optimize crop yield while mitigating soil degradation. Second, we explore the role of green roofs in urban heat island mitigation, showing how vegetation and water dynamics on rooftops can enhance latent heat flux, thereby potentially reducing urban temperatures and improving building energy efficiency. Lastly, we assess the climate mitigation potential of mangrove restoration, accounting for the impacts of salinization and sea-level rise. We demonstrate that carbon sequestration in mangrove ecosystems may be strongly limited by productivity reduction due to salinity and reduced area availability under sea-level rise. These case studies illustrate the strengths of simplified ecohydrological models in capturing critical feedbacks and interdependencies between water and biota across diverse environments. By prioritizing adaptive, resilient strategies, EE offers a practical pathway for developing innovative, context-sensitive solutions that leverage ecosystem dynamics to address pressing environmental issues.</p>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eco.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Effect of Groundwater Flow on Microbial Activity in a Porous Limestone Groundwater

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-01-30 DOI: 10.1002/eco.70000

Shinji Nakaya, Tatsuya Deno, Jun Yasumoto, Ryogo Takada

{"title":"Effect of Groundwater Flow on Microbial Activity in a Porous Limestone Groundwater","authors":"Shinji Nakaya, Tatsuya Deno, Jun Yasumoto, Ryogo Takada","doi":"10.1002/eco.70000","DOIUrl":"https://doi.org/10.1002/eco.70000","url":null,"abstract":"<div>\u0000 \u0000 <p>Microbial metabolism in aerobic conditions releases carbon dioxide into the groundwater in the aquifer, while carbon dioxide controls the dissolution/precipitation of calcite and the hydration reaction under field conditions. Higher microbial activity produces more adenosine triphosphate (ATP) and vice versa. In this study, to elucidate the effect of groundwater flow on microbial activity in porous limestone groundwater, the relationship between water chemistry and ATP as a microbial activity index was investigated in groundwater in the Ryukyu limestone groundwater reservoir on Yoron Island, a subtropical island in southwestern Japan. The results in groundwater of a porous limestone groundwater reservoir suggest that (1) microbial activity caused by floating microorganisms in natural groundwater flow depends on dissolved oxygen and reflects that the calcite dissolution/precipitation behaviour and the hydration reaction proceed and (2) fast-flowing groundwater flow induced by artificial pumping suppresses the microbial activity caused by floating microorganisms in groundwater, despite the introduction of sufficient dissolved oxygen necessary for metabolism, and reduces the links between the microbial activity in groundwater and water-rock interaction.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Habitat Unit Mapping in Large River: Combining Ecological Opinions and Hydrodynamic Modelling to Inform River Management

IF 2.5 3区环境科学与生态学

Ecohydrology Pub Date : 2025-01-27 DOI: 10.1002/eco.2767

Qingrong Xie, Li Wang, Shengfa Yang, Shuaishuai Zhang, Yi Xiao, Peng Zhang, Jiang Hu, Wenjie Li, Jin Yang

{"title":"Habitat Unit Mapping in Large River: Combining Ecological Opinions and Hydrodynamic Modelling to Inform River Management","authors":"Qingrong Xie, Li Wang, Shengfa Yang, Shuaishuai Zhang, Yi Xiao, Peng Zhang, Jiang Hu, Wenjie Li, Jin Yang","doi":"10.1002/eco.2767","DOIUrl":"https://doi.org/10.1002/eco.2767","url":null,"abstract":"<div>\u0000 \u0000 <p>Restoration of complex river ecosystems requires an understanding of the availability of habitat for populations and multi-scale choices. Habitat unit (HU) mapping classifies river habitats, aiding in establishing the connection between the physical and biological conditions of rivers. Mid-scale HU classification can effectively predict fish habitat utilization patterns and has been developed and applied in numerous small to medium-sized river classifications. However, the delimitation of habitat units (HUs) for large rivers remains in its preliminary stages. This study used a two-dimensional (2D) hydrodynamic numerical model to calculate hydrodynamic data and forms ecological expert opinions based on the swimming abilities of typical fish species and geomorphic characteristics. A HU mapping procedure was constructed to describe the mesohabitat heterogeneity of HUs in the fluctuating backwater areas of the upper Yangtze River. Results indicated: (1) Rich diversity of habitats in the investigated river segment. HUs exhibit evident patterns in their planar, longitudinal, and lateral distribution. (2) Discharge magnitude influences the stability of HUs, leading to transitions between HU types. During the storage and falling periods, no dominant HU was observed, whereas the fast channel unit dominates during flood period, resulting in a reduction of the preferred habitat of fish. (3) Field monitoring of fish communities validates the potential of HU mapping in describing habitat utilization, which HUs such as pools and riffles were favoured by fish, while fast channel and slackwater unit were actively avoided, confirming the efficacy of the procedure. This research holds significant implications for habitat restoration in river management.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0