Afforestation and stream temperature in a temperate maritime environment

Webb, B.; Crisp, D. T.

doi:10.1002/hyp.5898

Cited by 34 publications

(53 citation statements)

References 30 publications

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“…Asimismo, la utilización de datos con alta resolución (15 min) permitió reconocer detalladamente el ciclo diario de la temperatura del agua durante los extremos de temperatura del aire (mínima y máxima). Estos resultados son concordantes con investigaciones previas desarrolladas principalmente en Europa y Norteamérica (Johnson 2004, Malcolm et al 2004, Webb & Crisp 2006, Brown et al 2010.…”

Section: Discussionunclassified

“…Así, la presencia y/o ausencia de vegetación ribereña perenne mostró ser crítica para el régimen térmico de los ríos andinos Lomín y Malleco. La variabilidad térmica del tramo con presencia de N. dombeyi fue ~ 0,6 ºC más fría que el tramo con presencia de estepa, este valor fue levemente más alto que los reportados para ríos de montaña en Escocia y Norte de Gales (Crisp 1997, Webb & Crisp 2006. Estas desigualdades entre localidades pueden ser atribuidas a características geomorfológicas, así como a la combinación de condiciones climáticas durante la realización de los estudios .…”

Section: Discussionunclassified

“…Sin embargo, otros estudios describen que esta reducción puede ser aún mayor (Caissie 2006, Webb & Crisp 2006, Brown et al 2010, pero depende directamente de la conformación del dosel y su orientación al cauce . Esta diferencia de temperatura entre ríos con vegetación ribereña contrastante se asocia a la sombra generada por el dosel, la cual disminuye la entrada directa de radiación solar neta (Johnson & Jones 2000, Malcolm et al 2004, Moore et al 2005b, Brown et al 2010, fuente principal de energía calórica en ríos de bajo orden (Isaak & Hubert 2001).…”

Section: Discussionunclassified

“…Si bien los ríos con presencia ribereña boscosa son más fríos que aquellos con presencia de estepa durante los meses de verano -por efecto de la sombra-algunos estudios han reportado que en invierno la temperatura es más alta en tramos con presencia de bosque, debido a que el dosel actúa como aislante, manteniendo la temperatura del aire y reduciendo la perdida de radiación de onda larga (Webb & Zhang 2004, Webb & Crisp 2006, Brown et al 2010. Esta afirmación concuerda parcialmente con los resultados encontrados en esta investigación, ya que a fines del otoño y comienzo del invierno se observaron temperaturas significativamente más altas en el río con presencia de bosque, sin embargo, se requieren de nuevas aproximaciones para capturar la variabilidad anual que permita realizar una caracterización a nivel estacional.…”

Section: Discussionunclassified

“…De acuerdo a Poole & Berman (2001), un denso dosel arbóreo reduce en un 90% la radiación solar incidente. Similarmente, Malcolm et al (2004), Rutherford et al (2004) y Webb & Crisp (2006) demostraron que la tasa de calentamiento y las fluctuaciones térmicas diarias responden a la secuencia de sombra generada por el dosel ripario.…”

Section: Introductionunclassified

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Importancia de la vegetación ribereña de Nothofagus dombeyi (Mirb.) Oerst. en el régimen térmico de sistemas fluviales andinos del sur de Chile

Pedreros¹,

Guevara-Mora²,

Urrutia³

et al. 2016

Gayana Bot.

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Section: Discussionunclassified

Section: Introductionunclassified

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Importancia de la vegetación ribereña de Nothofagus dombeyi (Mirb.) Oerst. en el régimen térmico de sistemas fluviales andinos del sur de Chile

Pedreros¹,

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et al. 2016

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Influence of contrasting riparian forest cover on stream temperature dynamics in salmonid spawning and nursery streams

et al. 2012

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In this paper, we investigated the influence of contrasting riparian forest types on upland stream temperatures and the links between thermal regime and standard indices of forest cover. Stream temperature was measured for two hydrological years at multiple sites along two tributaries of the River Dee, Scotland. Riparian cover in the upper reaches of both streams was dominated by Calluna moorland while the lower sections comprised either dense alluvial broadleaved forest (Girnock Burn) or native Scots Pine stands (Tanar). The Point‐Centered‐Quarter Method was used to quantify stem density (SD) and tree coverage (TC) as an indicator of channel shading comprising either dense alluvial broadleaved forest (Girnock Burn) or native Scots Pine stands (Tanar). The greatest reductions in maximum temperature (4 °C) and diel amplitude (6·6°C) were observed where TC and SD were greatest in areas of relatively dense broadleaved riparian cover. Analysis of the relationship between forest characteristics and temperature summary statistics revealed that SD and TC were significant predictors of mean and maximum temperatures, as well as daily temperature ranges for both rivers during the summer. The relationship between summer thermal indices and indicators of channel shading (SD or TC) was independent of forest type. However, as SD and TC were greater in the deciduous reaches of Glen Girnock than the mature Scots pine reaches of Glen Tanar, maximum reductions in stream temperature were greater in Glen Girnock. Given that maximum temperatures were strongly influenced by measures of shading, it suggested that riparian planting may offer a suitable mitigation against high temperatures under climate change. Copyright © 2012 John Wiley & Sons, Ltd.

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Inter‐annual variability in the effects of riparian woodland on micro‐climate, energy exchanges and water temperature of an upland Scottish stream

Garner

Malcolm

Sadler

et al. 2014

Hydrological Processes

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Abstract:The influence of riparian woodland on stream temperature, micro-climate and energy exchange was investigated over seven calendar years. Continuous data were collected from two reaches of the Girnock Burn (a tributary of the Aberdeenshire Dee, Scotland) with contrasting land use characteristics: (1) semi-natural riparian forest and (2) open moorland. In the moorland reach, wind speed and energy fluxes (especially net radiation, latent heat and sensible heat) varied considerably between years because of variable riparian micro-climate coupled strongly to prevailing meteorological conditions. In the forested reach, riparian vegetation sheltered the stream from meteorological conditions that produced a moderated micro-climate and thus energy exchange conditions, which were relatively stable between years. Net energy gains (losses) in spring and summer (autumn and winter) were typically greater in the moorland than the forest. However, when particularly high latent heat loss or low net radiation gain occurred in the moorland, net energy gain (loss) was less than that in the forest during the spring and summer (autumn and winter) months. Spring and summer water temperature was typically cooler in the forest and characterised by less inter-annual variability due to reduced, more inter-annually stable energy gain in the forested reach. The effect of riparian vegetation on autumn and winter water temperature dynamics was less clear because of the confounding effects of reach-scale inflows of thermally stable groundwater in the moorland reach, which strongly influenced the local heat budget. These findings provide new insights as to the hydrometeorological conditions under which semi-natural riparian forest may be effective in mitigating river thermal variability, notably peaks, under present and future climates.

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Afforestation and stream temperature in a temperate maritime environment

Cited by 34 publications

References 30 publications

Importancia de la vegetación ribereña de Nothofagus dombeyi (Mirb.) Oerst. en el régimen térmico de sistemas fluviales andinos del sur de Chile

Importancia de la vegetación ribereña de Nothofagus dombeyi (Mirb.) Oerst. en el régimen térmico de sistemas fluviales andinos del sur de Chile

Influence of contrasting riparian forest cover on stream temperature dynamics in salmonid spawning and nursery streams

Inter‐annual variability in the effects of riparian woodland on micro‐climate, energy exchanges and water temperature of an upland Scottish stream

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