+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Cascading processes in a changing environment: Disturbances on fluvial ecosystems in Chile and implications for hazard and risk management

Cascading processes in a changing environment: Disturbances on fluvial ecosystems in Chile and implications for hazard and risk management

Science of the Total Environment 655: 1089-1103

The compound hazard effects of multiple process cascades severely affect Chilean river systems and result in a large variety of disturbances on their ecosystems and alterations of their hydromorphologic regimes leading to extreme impacts on society, environment and infrastructure. The acute, neo-tectonically pre-determined susceptibility to seismic hazards, the widespread volcanic activity, the increasing glacier retreat and the continuous exposure to forest fires clearly disturb entire riverine systems and concur to trigger severe floods hazards. With the objective to refine the understanding of such cascading processes and to prospect feasible flood risk management strategies in such a rapidly changing environment we first classify the large river basins according to a set of disturbances (i.e. volcanic eruptions, earthquakes, glacier lake outburst floods, wild fires and mass movements). Then, we describe emblematic cases of process cascades which affected specific Chilean drainage basins and resulted in high losses as tangible examples of how the cascading processes may unfold in other river basins with similar characteristics. As an attempt to enrich the debate among management authorities and academia in Chile, and elsewhere, on how to sustainably manage river systems, we: a) highlight the pivotal need to determine the possible process cascades that may profoundly alter the system and b) we suggest to refine hazard and risk assessments accordingly, accounting for the current and future exposure. We advocate, finally, for the adoption of holistic approaches promoting anticipatory adaptation which may result in resilient system responses.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 066030898

Download citation: RISBibTeXText

PMID: 30577103

DOI: 10.1016/j.scitotenv.2018.11.217

Related references

Processes influencing chemical biomagnification and trophic magnification factors in aquatic ecosystems: Implications for chemical hazard and risk assessment. Chemosphere 154: 99, 2016

Dynamics of fluvial and slope processes in the changing geomorphic environment of Singapore. Earth Surface Processes and Landforms 19(7): 585-607, 1994

Mercury contamination in aquatic ecosystems under a changing environment Implications for the Three Gorges Reservoir. Chinese Science Bulletin 58(2): 141-149, 2013

Discovery of the first Tertiary bird fossil from Chile; (Pelecaniformes; Anhingidae) preserved in a deltaic-fluvial environment from the Miocene of Lonquimay, Araucania, Chile. Congreso Geologico Chileno: Resumenes Presentados 6: 394-397, 1991

Hydrodynamic and fluvial morphologic processes implications for fisheries management and research. North American Journal of Fisheries Management 10(3): 249-268, 1990

Cascading migrations and implications for vertical fluxes in pelagic ecosystems. Journal of Plankton Research 33(3): 349-355, 2011

Quantifying cascading effects triggered by disrupted transportation due to the Great 2008 Chinese Ice Storm: implications for disaster risk management. Natural Hazards 70(1): 337-352, 2014

Changing ecophysiological processes and carbon budget in East Asian ecosystems under near-future changes in climate: implications for long-term monitoring from a process-based model. Journal of Plant Research 123(4): 577-588, 2010

Submarine landforms in the fjords of southern Chile implications for glacimarine processes and sedimentation in a mild glacier-influenced environment. Quaternary Science Reviews 64: 1-19, 2013

Hazard and risk perception at Turrialba volcano (Costa Rica); implications for disaster risk management. Applied Geography 50: 63-73, 2014

Risk management against extremes in a changing environment a risk-layer approach using copulas. Environmetrics 23(8): 663-672, 2012

Integrated hazard identification within the risk management of industrial biological processes. Safety Science 103: 340-351, 2018

Record of the first avian fossil of the Tertiary of Chile a duck Pelecaniformes; Anhingidae, preserved in a fluvial delta of the Miocene of Lonquimay, Araucania region, Chile Hallazgo del primer ave fosil del Terciario de Chile un anade Pelecaniformes; Anhingidae, preservado en un ambiente deltaico-fluvial del Mioceno de Lonquimay, region de la Araucania, Chile. Unknown, 1991

Cascading disturbances in Florida Bay, USA: Cyanobacteria blooms, sponge mortality, and implications for juvenile spiny lobsters Panulirus argus. Marine Ecology Progress Series 129(1-3): 119-125, 1995

Rivers as groundwater-dependent ecosystems: a review of degrees of dependency, riverine processes and management implications. Australian Journal of Botany 54(2): 133-144, 2006