Rising water temperature in rivers: Ecological impacts and future resilience

Wiley Interdisciplinary Reviews Water, Journal Year: 2024, Volume and Issue: 11(4)

Published: March 5, 2024

Abstract Rising water temperatures in rivers due to climate change are already having observable impacts on river ecosystems. Warming has both direct and indirect aquatic life, further aggravates pervasive issues such as eutrophication, pollution, the spread of disease. Animals can survive higher through physiological and/or genetic acclimation, behavioral phenological change, range shifts more suitable locations. As such, those animals that adapted cool‐water regions typically found high altitudes latitudes where there fewer dispersal opportunities most at risk future extinction. However, sub‐lethal animal physiology phenology, body‐size, trophic interactions could have significant population‐level effects elsewhere. Rivers vulnerable warming because historic management left them exposed solar radiation removal riparian shade, hydrologically disconnected longitudinally, laterally, vertically. The resilience riverine ecosystems is also limited by anthropogenic simplification habitats, with implications for resource use resident organisms. Due complex ecosystems, species‐specific response organisms warming, predicting how will challenging. Restoring provide connectivity heterogeneity conditions would a expected co‐occurring pressures, including should be considered priority part global strategies adaptation mitigation. This article categorized under: Science Water > Environmental Change Life Nature Freshwater Ecosystems Stresses Pressures

Language: Английский

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An optimized NARX-based model for predicting thermal dynamics and heatwaves in rivers

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 926, P. 171954 - 171954

Published: March 26, 2024

Language: Английский

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Integrating spatial stream network models and environmental DNA to estimate current and future distributions of nonnative Smallmouth Bass

Transactions of the American Fisheries Society, Journal Year: 2024, Volume and Issue: 153(2), P. 180 - 199

Published: Jan. 25, 2024

Abstract Objective Climate change is fueling the rapid range expansion of invasive species in freshwater ecosystems. This has led to mounting calls from natural resource managers for more robust predictions distributions anticipate threats concern and implement proactive conservation restoration actions. Here, we applied recent advances fish sampling statistical modeling river networks estimate current future watershed‐scale spatial distribution nonnative Smallmouth Bass Micropterus dolomieu . Methods We integrated a stream network (SSN) model temperature, landscape environmental covariates, occurrence data based on DNA (eDNA) detections develop an SSN (SDM) representing Chehalis River, Washington State, large coastal basin ongoing restoration. The SDM was informed by spatially intensive eDNA 135 locations main stem major tributaries. then downscaled climate projections predict late century. Result identified high levels autocorrelation at hydrological distances ≤10 km our set, underscoring importance applying framework. Stream temperature as most important covariate explaining variability occurrence. Model estimated that suitable summer habitat spans 681 projected nearly double century (1333 km) under moderate scenario. Current prevalent tributaries spring Chinook Salmon Oncorhynchus tshawytscha , River broadly along Pacific coast. In both tributaries, upstream leading edges closely align with (within 4.8 sampling. Conclusion Our study highlights value integrating models rapidly growing sets accurate precise riverine estimation. application provides crucial insights anticipating impacts shifting salmon spp. warming world.

Language: Английский

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SSN2: The next generation of spatial stream network modeling in R

The Journal of Open Source Software, Journal Year: 2024, Volume and Issue: 9(99), P. 6389 - 6389

Published: July 26, 2024

The SSN2 R package provides tools for spatial statistical modeling, parameter estimation, and prediction on stream (river) networks.SSN2 is the successor to SSN (Ver Hoef, Peterson, Clifford, & Shah, 2014), which was archived alongside broader changes in

Language: Английский

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Within-reach temperature heterogeneity is limited in a southern Appalachian stream network, southeastern USA

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133127 - 133127

Published: March 1, 2025

Language: Английский

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Surface Texture of Macroplastic Pollution in Streams Alters the Physical Structure and Diversity of Biofilm Communities

Environmental Microbiology Reports, Journal Year: 2025, Volume and Issue: 17(2)

Published: April 1, 2025

ABSTRACT Biofilms can develop on nearly any surface, and in aquatic ecosystems they are essential components of biogeochemical cycles food webs. Plastic waste waterways is a new type surface for biofilm colonisation. To analyse the influence plastic pollution development diversity microbial freshwater biofilms that colonised them, we incubated 388 cm 2 veneers high‐density polyethylene (HDPE) with two veneer textures, smooth rough, tulip tree wood ( Liriodendron tulipifera ), three rural headwater streams at Savannah River Site (Aiken, SC, USA). We collected from after 14, 28 56 days incubation analysed 16S rRNA genes properties. found negatively affected species richness compared wood, but evenness was greatest rough textured HDPE. Beta primarily influenced by stream site. differed more between than texture became different over time. Wood had nine times biomass HDPE 40 Given projected increase macroplastic ecosystems, our findings emphasise need to further understand its effects characteristics.

Language: Английский

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Contrasting long‐term trends in juvenile abundance of a widespread cold‐water salmonid along a latitudinal gradient: effects of climate, stream size and migration strategy

Ecography, Journal Year: 2023, Volume and Issue: 2023(5)

Published: March 29, 2023

A changing climate reshapes the range distribution of many organisms, and species with relatively low thermal optima, like salmonids, are increasingly expected to face local population extinctions at lower latitudes. Understanding where how fast these changes happening is pivotal importance for successful mitigation conservation efforts. We used an extensive electrofishing database explore temporal trends juveniles brown trout Salmo trutta in 218 locations from 174 Swedish streams, over last 30 years (1991–2020). hypothesized that 1) declines abundance have occurred predominately warmer, southern regions, while increases colder, northern 2) larger stream sizes may partly offset negative effects climate, 3) migrating resident populations affected differently by a warming climate. found generally declined warmer regions especially smaller streams (≤ 6 m wide), increased colder regions. In higher temperatures were seemingly buffered, as we rates decline or even positive trends. The rate change (i.e. slopes abundance) was more pronounced towards extremes, on average zero normal annual air temperature (average year period) around 5–6 °C. Warmer had stronger compared populations, suggesting climate‐induced loss connectivity could be additional factor hinders recruitment anadromous Considering predictions increasing frequency summer droughts, management cold‐water salmonid should focus conserving restoring riparian vegetation, wetlands, refugia, habitat integrity overall. Such measures may, however, not suffice small latitudes, unless hydrological maintained.

Language: Английский

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Understanding the effects of spatially variable riparian tree planting strategies to target water temperature reductions in rivers

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 635, P. 131163 - 131163

Published: April 5, 2024

Climate change is increasing river temperature globally, altering the thermal suitability for iconic cold-water adapted fishes. In regions with low tree cover, impacts of projected climate on will be particularly pronounced due to limited shading channel. Reforestation riparian corridor thus increasingly being used shade rivers and offset increases in water temperature. However, planting can expensive logistically challenging, meaning that there a need develop guidance prioritise where it deliver greatest benefits. this study, we use process-based stream model simulate likely effects real-world scheme recently implemented Baddoch Burn, tributary Aberdeenshire Dee, Scotland. Our results show that, when mature, ∼3 km recent increase effective lower reaches Burn from 22% 47%, delivering ∼1.5 °C decrease maximum summer comparison present-day baseline. We subsequently systematically different locations configurations determine how produces optimal response. highlight spatial (in terms length, number, location upstream spacing between zones) have considerable impact outcomes, but reductions are generally achieved through longer and/or more numerous strips woodland reaches, maximised (due reduced channel width) volumes residence times mean solar radiation greatest. investigation not only highlights extent which reductions, also underscores importance configuration reduction desired location. Overall, our provide useful information managers practitioners appropriate schemes combat change-driven warming.

Language: Английский

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Forestry impacts on stream flows and temperatures: A quantitative synthesis of paired catchment studies across the Pacific salmon range

Ecological Solutions and Evidence, Journal Year: 2024, Volume and Issue: 5(2)

Published: April 1, 2024

Abstract Forestry is pervasive across temperate North America and may influence aquatic environmental conditions such as flows temperatures, well important species Pacific salmon ( Oncorhynchus spp.). While there have been many large‐scale forestry experiments using paired catchment designs, these studies yet to be quantitatively synthesized. Thus, it remains unclear whether impacts are consistent, context‐dependent or unpredictable. This study aims synthesize on streamflow temperature, through a systematic review synthesis of the range salmon. Specifically, we investigated generalizable relationships exist between intensity (percent watershed harvested) temperature. We also examined features (climate, hydrology lithology) harvest method mediated impacts. extracted information from 35 unique paired‐catchments California Alaska. had strong peak low maximum summer water but responses were quite variable. Across all catchments, elevated ~20% n = 31 catchments), reduced ~25% 13 catchments) increased temperatures ~15% average. However, variable not predictable based intensity, thus broader stressor–response supported. varied spatially. Peak flow with northward latitude temperature decreased eastward longitude. magnitude unrelated other attributes, which included climate (precipitation aridity), rain versus snow hydrology, elevation bedrock lithology. Harvest riparian buffer presence no detected effects statistical models explained proportion variation overall. Collectively, our results indicate that can substantial key conditions; however, impact was could clearly linked easily measured characteristics. implies broadly predictable. Probabilistic risk distributions potential therefore more useful for management in data‐poor situations.

Language: Английский

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Tidal–hydrological dynamics of water temperature across freshwater forested wetlands on the northeastern Pacific coast

JAWRA Journal of the American Water Resources Association, Journal Year: 2025, Volume and Issue: 61(1)

Published: Jan. 2, 2025

Abstract Tidal freshwater forests were once extensive across temperate coastlines, but loss and fragmentation have made estimation of their ecosystem functions challenging. We measured water temperature for 2 years in three Sitka spruce tidal forests, a restoration site, an adjacent emergent marsh on the Columbia River, Washington, United States. assessed spatial variability within sites including effects hydrology, differences among bay tributary between mainstem Columbia, marsh. The nearest to had lower interior temperatures than channel confluences by up 2.5°C (weekly median temperature) 2.0°C maximum temperature), with most cooling occurring during low‐flow months July–September. Tributary 1.9°C cooler 4.2°C mainstem. Temperatures two decreased −0.16°C/100 m −0.07°C/100 m, average. site smallest within‐site gradient. Differences greatest when range was low, while higher ranges associated warmer more variable interiors relative confluences. These results suggest that these can provide refugia cold biota salmon.

Language: Английский

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