You are not logged in.

Limitations to the feasibility of using hypolimnetic releases to create refuges for riverine species in response to stream warming

Matthews, Ty G, Lester, Rebecca E, Cummings, Courtney R and Lautenschlager, Agnes D 2015, Limitations to the feasibility of using hypolimnetic releases to create refuges for riverine species in response to stream warming, Environmental science and policy, vol. 54, pp. 331-339, doi: 10.1016/j.envsci.2015.07.026.

Attached Files
Name Description MIMEType Size Downloads

Title Limitations to the feasibility of using hypolimnetic releases to create refuges for riverine species in response to stream warming
Author(s) Matthews, Ty G
Lester, Rebecca E
Cummings, Courtney R
Lautenschlager, Agnes D
Journal name Environmental science and policy
Volume number 54
Start page 331
End page 339
Total pages 9
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-12
ISSN 1462-9011
1873-6416
Keyword(s) Fish
Macroinvertebrate
Shandying
Environmental flows
Natural resource management
Aquatic biota
Summary Given predicted increases associated with human-induced climate change, stream temperatures are likely to approach upper tolerance limits of aquatic biota within the coming decades. Little information is available regarding thermal tolerance limits of lotic fauna or mechanisms allowing fauna to persist following high temperature events (e.g. use of thermal refuges). Cold-water refuges can facilitate survival of fish in the Northern Hemisphere, but little evidence of similar refuges exists elsewhere.Planned releases of hypolimnetic, or a mixture of top and bottom, waters from reservoirs have recently been touted as a novel method to potentially ameliorate extreme temperature events. However, the feasibility of this technique has not been fully discussed in the published literature. Therefore, we present a literature review, an analysis of thermal data for some large dams in southern Australia in relation to known thermal tolerances of native fauna, and an assessment of current management practices regarding the technique. We show that hypolimnetic releases have variable impacts on water temperatures downstream of a dam, depending on size, off-take infrastructure and management practices but, even where there is an effect, knowledge gaps are too numerous for this technique to be currently feasible. Furthermore, hypolimnetic releases generally evoke negative connotations among natural resource managers, due to the occurrence of cold-water shock in some species. If knowledge gaps and limitations can be addressed, it is possible that the technique may be considered in future, so we present potential tools for future assessment, capacities and limitations and discuss potential scenarios where environmental managers might consider this technique.
Language eng
DOI 10.1016/j.envsci.2015.07.026
Field of Research 050101 Ecological Impacts of Climate Change
05 Environmental Sciences
16 Studies In Human Society
07 Agricultural And Veterinary Sciences
Socio Economic Objective 960506 Ecosystem Assessment and Management of Fresh
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30078797

Document type: Journal Article
Collection: School of Life and Environmental Sciences
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 0 times in TR Web of Science
Scopus Citation Count Cited 0 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 74 Abstract Views, 1 File Downloads  -  Detailed Statistics
Created: Thu, 28 Jan 2016, 14:29:57 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.