Rethinking river water temperature in a changing, human-dominated world

Nature Water, Journal Year: 2023, Volume and Issue: 1(2), P. 125 - 128

Published: Feb. 22, 2023

Language: Английский

---

Assessing climate change impacts on North American freshwater habitat of wild Atlantic salmon - urgent needs for collaborative research

Canadian Water Resources Journal / Revue canadienne des ressources hydriques, Journal Year: 2023, Volume and Issue: 48(2), P. 222 - 246

Published: Jan. 17, 2023

Climate change and human activities have dramatically affected all ecosystems inhabited by Atlantic salmon, causing drastic population declines. Change in river temperature dynamics (e.g. daily variability, frequency, duration of summer maximum, warmer thermal regimes) is special concern as it impacts growth rates, reproductive success, prey abundance phenology, timing migration, ultimately survival. The Salmon Research Joint Venture held a workshop to address the effects climate on freshwater habitats salmon identify research gaps priorities. Here we summarize state science for three key themes identified participants: (1) Effects in-river habitat conditions, (2) Physiological behavioral responses temperature, (3) Population-level change. group highlighted crucial importance understanding monitoring links between physiological requirements across different life stages with focus stages. will undoubtedly continue affect instream seasons render challenging conditions Hence, call urgent interdisciplinary collaborations partnerships among scientists managers pressing that require large-scale data integration cycle ecosystems. More collaboration scientists, managers, interest groups needed ensure fundamental directly addresses knowledge-action gap enhance evidence-based decision-making conservation.

Language: Английский

---

Linking Surface Urban Heat Islands with Groundwater Temperatures

Environmental Science & Technology, Journal Year: 2015, Volume and Issue: 50(1), P. 70 - 78

Published: Nov. 23, 2015

Urban temperatures are typically, but not necessarily, elevated compared to their rural surroundings. This phenomenon of urban heat islands (UHI) exists both above and below the ground. These zones coupled through conductive transport. However, precise process is sufficiently understood. Using satellite-derived land surface temperature interpolated groundwater measurements, we compare spatial properties kinds in four German cities find correlations up 80%. The best correlation found older, mature such as Cologne Berlin. 95% analyzed areas, higher than due additional subsurface sources buildings basements. Local hot spots under city centers industrial areas revealed by temperatures. Hence, propose an estimation method that relates mean annual land-surface temperatures, building density, basement this method, able accurately estimate regional with a absolute error 0.9 K.

Language: Английский

---

Hydrogeological controls on spatial patterns of groundwater discharge in peatlands

Hydrology and earth system sciences, Journal Year: 2017, Volume and Issue: 21(12), P. 6031 - 6048

Published: Nov. 30, 2017

Abstract. Peatland environments provide important ecosystem services including water and carbon storage, nutrient processing retention, wildlife habitat. However, these systems the they have been degraded through historical anthropogenic agricultural conversion dewatering practices. Effective wetland restoration requires incorporating site hydrology understanding groundwater discharge spatial patterns. Groundwater maintains ecosystems by providing relatively stable hydrologic conditions, inputs, thermal buffering for ecological structure function; however, a comprehensive site-specific evaluation is rarely feasible such resource-constrained projects. An improved process-based of in peatlands may help guide design without need invasive methodologies detailed investigation. Here we examine kettle-hole peatland southeast Massachusetts historically modified commercial cranberry farming. During time our investigation, large project was assessment phases. To gain insight into drivers hydrology, evaluated patterning subsurface complex using heat-tracing methods ground-penetrating radar. Our results illustrate that two processes contribute to system: diffuse lower-flux marginal matrix seepage discrete higher-flux preferential-flow-path seepage. Both types develop interactions with basin structure, often where slope at high angle regional gradient. These field observations indicate strong correlation between structures surficial discharge. Understanding general patterns allow resource managers more efficiently predict locate seepage, confirm remote sensing technologies, incorporate this information critical ecosystems.

Language: Английский

---

Groundwater flow estimation using temperature-depth profiles in a complex environment and a changing climate

The Science of The Total Environment, Journal Year: 2016, Volume and Issue: 574, P. 272 - 281

Published: Oct. 14, 2016

Language: Английский

---