Dimensions of Riparian Buffer Strips Required to Maintain Trout Habitat in Southern Ontario Streams

Barton, David R.; Taylor, William D.; Biette, R. M.

doi:10.1577/1548-8659(1985)5<364:dorbsr>2.0.co;2

Cited by 180 publications

(147 citation statements)

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“…Also offers habitat and organic input to benthic fauna (Barton et al, 1985;Beschta et al, 1987;Shirvell, 1990) x x…”

Section: Biodiversity Terrestrialization Sestonmentioning

confidence: 99%

LiDAR derived ecological integrity indicators for riparian zones: Application to the Houille river in Southern Belgium/Northern France

Michez¹,

Piégay²,

Toromanoff³

et al. 2013

Ecological Indicators

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a b s t r a c tRiparian zones are central landscape features providing several ecosystem services and are exceptionally rich in biodiversity. Despite their relatively low area coverage, riparian zones consequently represent a major concern for land and water resource managers confirmed within several European directives. These directives involve effective multi-scale monitoring to assess their conditions and their ability to carry out their functions. The objective of this research was to develop automated tools to provide from a single aerial LiDAR dataset new mapping tools and keystone riparian zone attributes assessing the ecological integrity of the riparian zone at a network scale (24 km).Different metrics were extracted from the original LiDAR point cloud, notably the Digital Terrain Model and Canopy Height Model rasters, allowing the extraction of riparian zones attributes such as the wetted channel (0.89 m; mean residual) and floodplain extents (6.02 m; mean residual). Different riparian forest characteristics were directly extracted from these layers (patch extent, overhanging character, longitudinal continuity, relative water level, mean and relative standard deviation of tree height). Within the riparian forest, the coniferous stands were distinguished from deciduous and isolated trees, with high accuracy (87.3%, Kappa index).Going further the mapping of the indicators, our study proposed an original approach to study the riparian zone attributes within different buffer width, from local scale (50 m long channel axis reach) to a network scale (ca. 2 km long reaches), using a disaggregation/re-agraggation process. This novel approach, combined to graphical presentations of the results allow natural resource managers to visualise the variation of upstream-downstream attributes and to identify priority action areas.In the case study, results showed a general decrease of the riparian forests when the river crosses built-up areas. They also highlighted the lower flooding frequency of riparian forest patches in habitats areas.Those results showed that LiDAR data can be used to extract indicators of ecological integrity of riparian zones in temperate climate zone. They will enable the assessment of the ecological integrity of riparian zones to be undertaken at the regional scale (13,000 km, completely covered by an aerial LIDAR survey in 2014).

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“…Also offers habitat and organic input to benthic fauna (Barton et al, 1985;Beschta et al, 1987;Shirvell, 1990) x x…”

Section: Biodiversity Terrestrialization Sestonmentioning

confidence: 99%

LiDAR derived ecological integrity indicators for riparian zones: Application to the Houille river in Southern Belgium/Northern France

Michez¹,

Piégay²,

Toromanoff³

et al. 2013

Ecological Indicators

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“…However, removal of riparian forest may adversely affect thermal regime (see reviews in Morash 2001, Steedman et al 2004), inputs of fine organic matter (Webster and Waide 1982, Webster et al 1990, Hartman et al 1996, and recruitment of coarse woody material (Dolloff and Webster 2000, Meleason et al 2003, Jones andDaniels 2008). Stream temperature typically is influenced by forest within 10 to 30 m of shorelines depending on tree height and canopy density (Barton et al 1985, Castelle et al 1994, Sridhar et al 2004, Wilkerson et al 2006). More than 80% of allochthonous inputs typically come from vegetation within ,½ tree height of shorelines (Reeves et al 2006).…”

Section: Thoughtfully Plannedmentioning

confidence: 99%

Emulation of natural disturbance (END) for riparian forest management: synthesis and recommendations

et al. 2012

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“…Effects of latitude, slope and aspect on the shadow cast by a 25 m tall tree (calculated using the stream surface shade model of Quigley (1981) riparian buffer and stream water temperature in Japan, Nakamura and Dokai (1989) related tree height, crown diameter and stream width to stream temperature; they estimated that removal of riparian woodland would increase the daily maximum water temperature by up to 4°C, depending on stream width. Similarly, Barton et al (1985), from studies in the USA, derived an empirical regression model which accounted for 90% of the variation in the relationship between maximum water temperature of 10 trout streams in southern Ontario, Canada and riparian buffer length and width (Fig. 1).…”

Section: Salmo Salar Salmo Trutta Thymallus Thymallusmentioning

confidence: 99%

The effects of riparian forest management on the freshwater environment: a literature review of best management practice

Broadmeadow

Nisbet

2004

Hydrol. Earth Syst. Sci.

272

237

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National Forests and Water Guidelines require the establishment of riparian buffers to help protect the freshwater environment from disturbance by silvicultural operations on the adjacent land. The main functions of the riparian buffer are considered to be sediment removal and erosion control, protection of water quality, moderation of shade and water temperature, maintenance of habitat structural diversity and ecological integrity, and improvement of landscape quality. This review paper assesses how these functions are affected by the design and management of the riparian forest zone, with a focus on the width of the buffer, the structure of the vegetation and species choice. It is not possible to specify a definitive riparian buffer width that will protect the freshwater environment from every potential threat. Forestry agencies usually recommend widths between 10 and 30 m. Buffer widths towards the lower end of this scale tend to protect the physical and chemical characteristics of a stream, while the maintenance of ecological integrity requires widths at the upper end. In terms of structure and species, the benefits are greatest where the riparian buffer replicates native riparian woodland with an open canopy of mixed species of varied age class. The optimum level of shade is difficult to quantify but limited work suggests that a good balance is achieved where around 50% of the stream surface is open to sunlight and the remainder covered by dappled shade. Within the management of riparian woodland there is a need to consider a streams sensitivity and intrinsic value. Some sites will benefit from active intervention such as thinning, coppicing or pollarding, while others will be favoured by a hands-off approach. Long-term continuity of management is important to ensure that the potential benefits to the freshwater environment are realised.

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Dimensions of Riparian Buffer Strips Required to Maintain Trout Habitat in Southern Ontario Streams

Cited by 180 publications

References 0 publications

LiDAR derived ecological integrity indicators for riparian zones: Application to the Houille river in Southern Belgium/Northern France

LiDAR derived ecological integrity indicators for riparian zones: Application to the Houille river in Southern Belgium/Northern France

Emulation of natural disturbance (END) for riparian forest management: synthesis and recommendations

The effects of riparian forest management on the freshwater environment: a literature review of best management practice

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