Assessment of climate change effect on environmental flows for macroinvertebrates using an integrated hydrological-hydraulic-habitat modelling

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2024-10-02 DOI:10.1016/j.ejrh.2024.101982

Somsubhra Chattopadhyay , Ewelina Szałkiewicz , Paweł Marcinkowski , Dorota Mirosław-Świątek , Mikołaj Piniewski

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引用次数: 0

Abstract

Study region

A short reach of the Jeziorka river and its upstream catchment in central Poland

Study focus

Climate change is expected to have significant impacts on freshwater ecosystems, particularly on temperate region streams resulting often in changes to spatiotemporal distribution of macroinvertebrate species, as well as losses in richness and aquatic biodiversity due to the loss of suitable habitat. This study aimed to evaluate the impact of climate change on the habitat suitability and environmental flow violations for the filter feeder functional group of macroinvertebrate communities in a temperate lowland river in central Poland. To achieve this, we have successfully integrated hydrological (SWAT+), hydraulic (HEC-RAS 1D and SRH-2D), and habitat (CASiMiR) models. We have forced the model cascade with GCM/RCM projections to determine changes in future habitat conditions for a selected reach of the Jeziorka river.

New hydrological insights for the region

Future habitat conditions may deteriorate, as reflected in overwhelmingly negative trends in the hydraulic habitat suitability (HHS) index. According to the projections, there will be fewer days with the necessary environmental flows for filter feeders in the future. The frequency and duration of environmental flow violations, caused by too low or too high flows, depend on the climate model scenarios and timeframes. Our findings will aid water resource planners in achieving sustainable water resource management and meeting environmental flow requirements in the face of a changing climate.

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利用水文-水力-生境综合模型评估气候变化对大型无脊椎动物环境流量的影响

研究区域波兰中部 Jeziorka 河的一小段河道及其上游集水区研究重点气候变化预计将对淡水生态系统产生重大影响，尤其是对温带地区的河流，这通常会导致大型无脊椎动物物种时空分布的变化，以及由于适宜栖息地的丧失而导致的丰富度和水生生物多样性的损失。本研究旨在评估气候变化对波兰中部一条温带低地河流中大型无脊椎动物群落滤食者功能组的栖息地适宜性和环境流量侵害的影响。为此，我们成功整合了水文（SWAT+）、水力（HEC-RAS 1D 和 SRH-2D）和生境（CASiMiR）模型。我们利用 GCM/RCM 预测对模型级联进行了强制，以确定杰济奥尔卡河选定河段未来栖息地条件的变化。对该地区水文情况的新见解未来的栖息地条件可能会恶化，这反映在水力栖息地适宜性 (HHS) 指数中压倒性的负面趋势上。根据预测，未来滤食动物所需环境流量的天数将会减少。由于流量过低或过高而造成的环境流量违规的频率和持续时间取决于气候模型情景和时间框架。我们的研究结果将有助于水资源规划者实现可持续的水资源管理，并在不断变化的气候条件下满足环境流量要求。

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

Journal of Hydrology-Regional Studies Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

6.70

自引率

8.50%

发文量

284

审稿时长

60 days

期刊介绍： Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.