Flood control and revitalisation along the Aare river between Thun and Berne—experiences with recreational use and other conflicts of interest

2014 ◽  
pp. 61-68 ◽  
Author(s):  
F Witschi ◽  
B Käufeler
Keyword(s):  
Flood Control ◽  
Conflicts Of Interest ◽  
Recreational Use

scholarly journals Earthquake-induced habitat migration in a riparian spawning fish: implications for conservation management

2017 ◽  
Author(s):  
Shane Orchard ◽  
Michael J. H. Hickford ◽  
David R. Schiel
Keyword(s):  
Flood Control ◽  
Spawning Habitat ◽  
Habitat Recovery ◽  
Salinity Gradients ◽  
Galaxias Maculatus ◽  
Recovery Dynamics ◽  
Land Use And Management ◽  
Recreational Use ◽  
Large Earthquakes ◽  
Tectonic Dynamics

AbstractGalaxias maculatus is a riparian spawning fish that supports an important recreational fishery in New Zealand with spawning habitat requirements strongly structured by salinity gradients at rivermouths. This study reports changes to the spawning habitat following a series of large earthquakes that resulted in widespread deformation of ground surfaces in the vicinity of waterways. Assessments of habitat recovery focussed on two rivers systems, the Avon and Heathcote, with pre-disturbance data available over a 20 year period. Recovery dynamics were assessed by field survey and mapping of spawning habitat prior to and on seven occasions after the disturbance event. Riparian land-use and management patterns were mapped and analysed using overlay methods in GIS. Habitat migration of up to 2 km occurred in comparison to all previous records and several anthropogenic land uses have become threats due to changed patterns of co-occurrence. Incompatible activities now affect more than half of the spawning habitat in both rivers, particularly in areas managed for flood control purposes and recreational use. The results are an example of landscape scale responses to salinity and water level changes driven by tectonic dynamics. These dynamics are not the source of the stress per se, rather, they have increased exposure to pre-existing stressors. The case illustrates important principles for managing subtle, yet widespread, change. Adaptive conservation methods and investments in information are priorities for avoiding management failure following environmental change.

Conflicts of Interest: Opportunities Abound

2011 ◽  
Author(s):  
Jeffrey Cheek ◽  
John Slattery
Keyword(s):  
Conflicts Of Interest
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