Reply to comment by Bathurst on “A paradigm shift in understanding and quantifying the effects of forest harvesting on floods in snow environments”

Alila, Younes; Green, Kim C.

doi:10.1002/2013wr014334

Cited by 6 publications

(4 citation statements)

References 37 publications

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“…More detailed arguments for the use of FP over CP in forest hydrologic studies can be found in Alila et al . () as well as in Alila and Green (, ).…”

Section: Methodsmentioning

confidence: 84%

“…Reinhart, ; Hornbeck, ; Partridge and Sopper, ; Ziemer, ; Swank et al ., ) have used CP, pairing flow events in time, to quantify changes in yield or stormflow. CP has methodological shortcomings that have generally been ignored in the forest hydrology literature (Alila et al ., ; Alila and Green, , ). Applying CP to forest hydrology leads to inaccurate estimates of the change in magnitude of streamflow because CP cannot account for antecedent soil moisture conditions and thus does not isolate the effects of the disturbance on flow.…”

Section: Methodsmentioning

confidence: 99%

“…Reinhart ; Rothacher, ; Troendle et al ., ; Moore and Scott, ). Some of the disagreement in the effects of harvesting on peakflow may stem from the methods used to detect differences in flow metrics after harvest, as most of these studies used the chronological pairing (CP) method that has fallen under increasing criticism in recent studies (Alila et al ., ; Alila and Green, , ).…”

Section: Introductionmentioning

confidence: 99%

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Changes to southern Appalachian water yield and stormflow after loss of a foundation species

et al. 2014

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Few studies have examined how insect outbreaks affect landscape‐level hydrologic processes. We report the hydrologic effects of the invasive, exotic hemlock woolly adelgid (HWA) in a headwater catchment in the southern Appalachian Mountains. The study watershed experienced complete mortality of an evergreen tree species, Tsuga canadensis (L.) Carr. (eastern hemlock), after infestation was first detected in 2003. Hemlock mortality resulted in a ~6% reduction in basal area in the watershed, and this loss was primarily concentrated in riparian zones. We used a paired‐watershed approach to quantify changes in water yield and peak stormflow using streamflow data from the infested watershed and a nearby watershed with significantly lower hemlock basal area. We hypothesized that yield would increase shortly after hemlock infestation but decrease over the longer‐term. We found that annual yield did not increase significantly in any year after infestation but decreased significantly by 12·0 cm (~8%) in 2010. Monthly yield also decreased after infestation, but changes were limited to the dormant season. The decline in yield is likely to persist as hemlock is replaced by species with higher transpiration rates. Peakflow increased significantly after infestation during the two largest flow events in the post‐infestation period. Changes in stormflow during extreme events may have been temporary as another evergreen, Rhododendron maximum, may have mitigated some of the changes after hemlock loss. Thus, streams draining watersheds where eastern hemlock has been lost due to HWA infestation demonstrate permanent reductions in yield and transient increases in peakflow during large‐flow events. Published 2014. This article is a U.S. Government work and is in the public domain in the USA.

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“…More detailed arguments for the use of FP over CP in forest hydrologic studies can be found in Alila et al . () as well as in Alila and Green (, ).…”

Section: Methodsmentioning

confidence: 84%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Changes to southern Appalachian water yield and stormflow after loss of a foundation species

et al. 2014

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“…There is an increasing interest in the potential for forests to moderate flood responses (e.g. CIFOR and FAO, 2005;Bradshaw et al, 2007;Marshall et al, 2009) but clear field evidence of this effect is scarce and the means of quantifying the impact remain controversial (see for example the discussion in Alila & Green (2014a, 2014b, Bathurst (2014) and Birkinshaw (2014).) The emerging conclusion from so-called chronological pairing studies (in which the flood peaks from catchments with different land covers but otherwise identical properties are compared for given rainfall events) is that for small to moderate rainfall events a forested catchment can (but may not always) reduce the flood peak compared with an unforested catchment; above a certain magnitude of rainfall event, there is little difference in the peak discharges of the two catchments (e.g.…”

Section: Background To Objectivesmentioning

confidence: 99%

Runoff, flood peaks and proportional response in a combined nested and paired forest plantation/peat grassland catchment

Bathurst

Birkinshaw

Johnson

et al. 2018

Journal of Hydrology

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Annual runoff is 24% less for 100% forested than 100% grassland catchment  Land use affects moderate flood peaks but effect is constrained by soil moisture  Drainage ditches support larger flood peaks in forested than grassland catchment  Peat grassland storage enhances spring monthly runoff ratios, reaching 100%  Integrated catchment runoff shown to be derivable from proportional land cover

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Nonstationary frequency pairing reveals a highly sensitive peak flow regime to harvesting across a wide range of return periods

Alila

2019

Forest Ecology and Management

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Reply to comment by Bathurst on “A paradigm shift in understanding and quantifying the effects of forest harvesting on floods in snow environments”

Cited by 6 publications

References 37 publications

Changes to southern Appalachian water yield and stormflow after loss of a foundation species

Changes to southern Appalachian water yield and stormflow after loss of a foundation species

Runoff, flood peaks and proportional response in a combined nested and paired forest plantation/peat grassland catchment

Nonstationary frequency pairing reveals a highly sensitive peak flow regime to harvesting across a wide range of return periods

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