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Habitat Fragmentation02:31

Habitat Fragmentation

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Related Experiment Video

Updated: May 11, 2026

Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
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Published on: September 11, 2016

Space and time scales in human-landscape systems.

G Mathias Kondolf1, Kristen Podolak

  • 1Department of Landscape Architecture and Environmental Planning, University of California, Berkeley, 202 Wurster Hall #2000, Berkeley, CA, 94720-2000, USA, kondolf.berkeley@gmail.com.

Environmental Management
|May 30, 2013
PubMed
Summary

Human activities significantly alter landscapes over vast spatial and temporal scales, impacting geomorphic processes and river systems. Current restoration efforts are often too small to counteract these extensive human-induced changes.

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Area of Science:

  • Geosciences
  • Environmental Science
  • Human Ecology

Background:

  • Human activities have profoundly altered natural landscape processes across diverse spatial and temporal scales.
  • Understanding these human-landscape interactions is crucial for effective environmental management and restoration.

Purpose of the Study:

  • To analyze the scales of human impacts on geomorphic processes.
  • To examine the spatial and temporal scales of river restoration.
  • To investigate the time scales of natural disasters and societal responses.

Main Methods:

  • Review of studies on human impacts on sediment yields.
  • Analysis of spatial and temporal scales in river restoration projects.
  • Examination of disaster response times versus natural event frequencies.

Main Results:

  • Human-induced landscape changes, particularly in sediment yields, have accelerated significantly in recent centuries.
  • Current river restoration projects are often limited in scale compared to historical human alterations.
  • A mismatch exists between the infrequent nature of natural disasters and human preparedness.

Conclusions:

  • Human alterations of landscapes occur at scales often exceeding current restoration capacities.
  • Effective river restoration may require cumulative, large-scale efforts to address historical impacts.
  • Societal responses to natural disasters are often inadequate due to temporal mismatches, leading to unsustainable practices.