2017
DOI: 10.1111/fwb.13030
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Flow velocity–ecology thresholds in Canadian rivers: A comparison of trait and taxonomy‐based approaches

Abstract: Understanding the physical and biological mechanisms contributing to flow velocity–ecology relationships is crucial for successful river management. The application of an ecological traits‐based approach offers the potential to explore mechanistic linkages between aquatic communities and a hydrological gradient. To date, however, studies focused on identifying these relationships have been limited by a lack of large‐scale, long‐term biological data. To address this gap at a scale relevant for water policy mana… Show more

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Cited by 21 publications
(26 citation statements)
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References 92 publications
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“…These results provide further evidence that localised hydraulic observations may improve the characterisation of forces that biota are responding to at the time of sampling compared with the use of discharge-related statistics alone (Malcolm, Gibbins, Soulsby, Tetzlaff, & Moir, 2012;Monk et al, 2018;White et al, 2019) Functional redundancy may promote community resilience to environmental variation and may explain the lack of separation between functional communities in perennial and nonperennial river reaches in the autumn. Wetted channel characteristics were also significant drivers, with width demonstrating a significant correlation in all four models and depth in all but one.…”
Section: Perennial and Nonperennial Macroinvertebrate Community Assmentioning
confidence: 81%
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“…These results provide further evidence that localised hydraulic observations may improve the characterisation of forces that biota are responding to at the time of sampling compared with the use of discharge-related statistics alone (Malcolm, Gibbins, Soulsby, Tetzlaff, & Moir, 2012;Monk et al, 2018;White et al, 2019) Functional redundancy may promote community resilience to environmental variation and may explain the lack of separation between functional communities in perennial and nonperennial river reaches in the autumn. Wetted channel characteristics were also significant drivers, with width demonstrating a significant correlation in all four models and depth in all but one.…”
Section: Perennial and Nonperennial Macroinvertebrate Community Assmentioning
confidence: 81%
“…mental conditions (such as hydrology) as there is less "noise" in datasets, due to functional redundancy (García-Roger, 2017), and some traits such as resistance forms may enable the persistence of multiple taxa at nonperennial sites(Boersma et al, 2014). Including trait-based assessments in ecological monitoring may therefore enhance fundamental understanding of the links between biodiversity and ecosystem function(Monk et al, 2018;Reiss, Bridle, Montoya, & Woodward, 2009). …”
mentioning
confidence: 99%
“…: Environmental flows describe the quantity, timing, and quality of freshwater flows and water levels necessary to sustain aquatic ecosystems which, in turn, support human cultures, economies, sustainable livelihoods, and well‐being. In this definition, “Aquatic ecosystems include rivers, streams, springs, riparian, floodplain and other wetlands, lakes, ponds, coastal waterbodies, including lagoons and estuaries, and groundwater‐dependent ecosystems.” Expand measurement of ecological responses to flow to reflect system dynamics: There is a need to move away from static hydrologic metrics and ecological endpoints (ecosystem states) towards a new suite of indicators (process rates, dynamic population models, state‐and‐transition models and species traits) that can help measure the success of environmental flows and broader water management (Bond et al., ; Chen & Olden, ; Monk et al., ; Poff, ; Wheeler et al., ). A complete understanding of biotic response to flow alteration, or to an environmental flow regime, requires information on how species (or trait guilds) respond over the short‐ to long‐term temporal spectrum, measured at the spatial scales needed for species to recruit, disperse and form meta‐population and assemblage structures (Poff, ).…”
Section: Advancing the Management Of Environmental Watermentioning
confidence: 99%
“…Expanding the scope of environmental watering beyond flowing waters has generated debate around terminology. Horne, Webb, Stewardson, et al (2017) Chen & Olden, 2018;Monk et al, 2018;Poff, 2018;Wheeler et al, 2018). A complete understanding of biotic response to flow alteration, or to an environmental flow regime, requires information on how species (or trait guilds) respond over the short-to long-term temporal spectrum, measured at the spatial scales needed for species to recruit, disperse and form meta-population and assemblage structures (Poff, 2018).…”
Section: Environme Ntal Watermentioning
confidence: 99%
“…Case studies that present application of flow–ecology response models designed to help environmental water science practitioners to better understand how alterations in streamflow and increasing levels of water scarcity affect the viability and integrity of aquatic ecosystems. Papers in this theme discuss case study examples including assessment of snowmelt conditions (Steel, Peek, Lusardi, & Yarnell, ), identification of high‐risk watersheds (Zimmerman et al., ) and tools with improved capacity and diagnostic resolution (McKenna, Reeves, & Seelbach, ; Monk et al., ) that can be integrated into water resource management programmes at the local, state, provincial, regional and national levels. Efficacy evaluation . Research and case studies that evaluate the effectiveness of environmental water programmes at achieving their desired hydrological and ecological objectives or evaluating complex scenarios with multiple interacting stressors.…”
Section: Introductionmentioning
confidence: 99%