Johannes Kuhn, Laura Kirsten, Joachim Pander, Juergen Geist
{"title":"河流和溪流高分辨率三维温度测量的新方法","authors":"Johannes Kuhn, Laura Kirsten, Joachim Pander, Juergen Geist","doi":"10.1002/eco.70092","DOIUrl":null,"url":null,"abstract":"<p>Water temperature is a crucial factor determining aquatic habitat characteristics and biological community structure. Despite its high relevance, conventional methods to measure thermal heterogeneity in surface waters are strongly limited in their spatial representativeness. Specifically, there is a lack of spatially three-dimensional methods capable of in situ characterization of water temperatures at high resolution for entire lotic waterbodies. This study presents an innovative prototype device which fulfils these requirements. We tested the device and method in a 400-m-long river stretch and compared the results with thermal heterogeneity mapping based on thermal infrared remote sensing. Our prototype device collected 6306 temperature measurements within 1 h throughout the river stretch, encompassing all habitat types with varying river morphology. Comparison with thermal infrared remote sensing revealed significant discrepancies, challenging the accuracy and representativeness of currently used methods that only record surface water temperatures. The observed substantial differences between surface and bottom temperatures of up to 9.36°C underscore the importance of measurements that include both near-bottom and near-surface measurements of high spatial resolution. The unprecedented quantity of temperature data points derived from the novel approach presented herein, coupled with the precise positional and depth information, opens new opportunities for a representative assessment of thermal heterogeneity in aquatic habitats.</p>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 5","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eco.70092","citationCount":"0","resultStr":"{\"title\":\"A Novel Approach to High Resolution Three-Dimensional Temperature Measurements in Rivers and Streams\",\"authors\":\"Johannes Kuhn, Laura Kirsten, Joachim Pander, Juergen Geist\",\"doi\":\"10.1002/eco.70092\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Water temperature is a crucial factor determining aquatic habitat characteristics and biological community structure. Despite its high relevance, conventional methods to measure thermal heterogeneity in surface waters are strongly limited in their spatial representativeness. Specifically, there is a lack of spatially three-dimensional methods capable of in situ characterization of water temperatures at high resolution for entire lotic waterbodies. This study presents an innovative prototype device which fulfils these requirements. We tested the device and method in a 400-m-long river stretch and compared the results with thermal heterogeneity mapping based on thermal infrared remote sensing. Our prototype device collected 6306 temperature measurements within 1 h throughout the river stretch, encompassing all habitat types with varying river morphology. Comparison with thermal infrared remote sensing revealed significant discrepancies, challenging the accuracy and representativeness of currently used methods that only record surface water temperatures. The observed substantial differences between surface and bottom temperatures of up to 9.36°C underscore the importance of measurements that include both near-bottom and near-surface measurements of high spatial resolution. The unprecedented quantity of temperature data points derived from the novel approach presented herein, coupled with the precise positional and depth information, opens new opportunities for a representative assessment of thermal heterogeneity in aquatic habitats.</p>\",\"PeriodicalId\":55169,\"journal\":{\"name\":\"Ecohydrology\",\"volume\":\"18 5\",\"pages\":\"\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2025-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eco.70092\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ecohydrology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/eco.70092\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecohydrology","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/eco.70092","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
A Novel Approach to High Resolution Three-Dimensional Temperature Measurements in Rivers and Streams
Water temperature is a crucial factor determining aquatic habitat characteristics and biological community structure. Despite its high relevance, conventional methods to measure thermal heterogeneity in surface waters are strongly limited in their spatial representativeness. Specifically, there is a lack of spatially three-dimensional methods capable of in situ characterization of water temperatures at high resolution for entire lotic waterbodies. This study presents an innovative prototype device which fulfils these requirements. We tested the device and method in a 400-m-long river stretch and compared the results with thermal heterogeneity mapping based on thermal infrared remote sensing. Our prototype device collected 6306 temperature measurements within 1 h throughout the river stretch, encompassing all habitat types with varying river morphology. Comparison with thermal infrared remote sensing revealed significant discrepancies, challenging the accuracy and representativeness of currently used methods that only record surface water temperatures. The observed substantial differences between surface and bottom temperatures of up to 9.36°C underscore the importance of measurements that include both near-bottom and near-surface measurements of high spatial resolution. The unprecedented quantity of temperature data points derived from the novel approach presented herein, coupled with the precise positional and depth information, opens new opportunities for a representative assessment of thermal heterogeneity in aquatic habitats.
期刊介绍:
Ecohydrology is an international journal publishing original scientific and review papers that aim to improve understanding of processes at the interface between ecology and hydrology and associated applications related to environmental management.
Ecohydrology seeks to increase interdisciplinary insights by placing particular emphasis on interactions and associated feedbacks in both space and time between ecological systems and the hydrological cycle. Research contributions are solicited from disciplines focusing on the physical, ecological, biological, biogeochemical, geomorphological, drainage basin, mathematical and methodological aspects of ecohydrology. Research in both terrestrial and aquatic systems is of interest provided it explicitly links ecological systems and the hydrologic cycle; research such as aquatic ecological, channel engineering, or ecological or hydrological modelling is less appropriate for the journal unless it specifically addresses the criteria above. Manuscripts describing individual case studies are of interest in cases where broader insights are discussed beyond site- and species-specific results.