A conceptual connectivity framework for understanding geomorphic change in human-impacted fluvial systems

Article

Poeppl, Ronald E., Keesstra, Saskia D. and Maroulis, Jerry. 2017. "A conceptual connectivity framework for understanding geomorphic change in human-impacted fluvial systems." Geomorphology. 277, pp. 237-250. https://doi.org/10.1016/j.geomorph.2016.07.033
Article Title

A conceptual connectivity framework for understanding geomorphic change in human-impacted fluvial systems

ERA Journal ID1803
Article CategoryArticle
AuthorsPoeppl, Ronald E. (Author), Keesstra, Saskia D. (Author) and Maroulis, Jerry (Author)
Journal TitleGeomorphology
Journal Citation277, pp. 237-250
Number of Pages14
Year2017
Place of PublicationNetherlands
ISSN0169-555X
1872-695X
Digital Object Identifier (DOI)https://doi.org/10.1016/j.geomorph.2016.07.033
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0169555X16306481
Abstract

Human-induced landscape change is difficult to predict due to the complexity inherent in both geomorphic and
social systems aswell as due to the coupling relationships between them. To better understand system complexity
and system response to changing inputs, 'connectivity thinking' has become an important recent paradigm
within various disciplines including ecology, hydrology and geomorphology. With the presented conceptual connectivity
framework on geomorphic change in human-impacted fluvial systems a cautionary note is flagged regarding
the need (i) to include and to systematically conceptualise the role of different types of human agency in
altering connectivity relationships in geomorphic systems and (ii) to integrate notions of human-environment
interactions to connectivity concepts in geomorphology to better explain causes and trajectories of landscape
change. Geomorphic response of fluvial systems to human disturbance is shown to be determined by system specific
boundary conditions (incl. system history, related legacy effects and lag times), vegetation dynamics
and human-induced functional relationships (i.e. feedback mechanisms) between the different spatial dimensions
of connectivity. It is further demonstrated how changes in social systems can trigger a process-response
feedback loop between social and geomorphic systems that further governs the trajectory of landscape change
in coupled human-geomorphic systems.

Keywordscomplexity, resilience, coupling, human-landscape systems, river management
ANZSRC Field of Research 2020370704. Surface water hydrology
370901. Geomorphology and earth surface processes
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Byline AffiliationsUniversity of Vienna, Austria
Wageningen University, Netherlands
International Centre for Applied Climate Science
Institution of OriginUniversity of Southern Queensland
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