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Measuring cumulative effects in a fragmented landscape

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  • Nogueira Terra, Talita
  • Ferreira dos Santos, Rozely

Abstract

Scientists recognize the importance of studying cumulative environmental effects as stressors, as there are countless stressors in human and technological development. However, existing studies acknowledge methodological limitations of measuring effects that combine and accumulate over time, making it difficult to interpret the processes leading to a given current landscape. Therefore, the objective of this study was to develop a method that would make it possible to define the sequence of human actions and to measure relationships between type, intensity and distribution of cumulative effects by analyzing the past and present composition of the landscape. The method is based on the identification of the cumulative value of effects in landscape units of 900m2. The chronosequence of human activities triggering accumulated effects was obtained from superimposed maps and the magnitude of effects was evaluated using area graphs. The method proposed was applied in a study area, resulting in a map that clearly showed the distribution and synergy of cumulative effects in the study area.

Suggested Citation

  • Nogueira Terra, Talita & Ferreira dos Santos, Rozely, 2012. "Measuring cumulative effects in a fragmented landscape," Ecological Modelling, Elsevier, vol. 228(C), pages 89-95.
    • Handle: RePEc:eee:ecomod:v:228:y:2012:i:c:p:89-95
    DOI: 10.1016/j.ecolmodel.2012.01.001
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    References listed on IDEAS

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    1. Birch, Colin P.D. & Oom, Sander P. & Beecham, Jonathan A., 2007. "Rectangular and hexagonal grids used for observation, experiment and simulation in ecology," Ecological Modelling, Elsevier, vol. 206(3), pages 347-359.
    2. Yang, Zhaoqing & Khangaonkar, Tarang & Calvi, Maria & Nelson, Kurt, 2010. "Simulation of cumulative effects of nearshore restoration projects on estuarine hydrodynamics," Ecological Modelling, Elsevier, vol. 221(7), pages 969-977.
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    Cited by:

    1. Hackbart, Vivian C.S. & de Lima, Guilherme T.N.P. & dos Santos, Rozely F., 2017. "Theory and practice of water ecosystem services valuation: Where are we going?," Ecosystem Services, Elsevier, vol. 23(C), pages 218-227.
    2. Wenwen Gao & Yuan Zeng & Yu Liu & Bingfang Wu, 2019. "Human Activity Intensity Assessment by Remote Sensing in the Water Source Area of the Middle Route of the South-to-North Water Diversion Project in China," Sustainability, MDPI, vol. 11(20), pages 1-13, October.
    3. Lima, Guilherme Theodoro Nascimento Pereira de & Hackbart, Vivian Cristina dos Santos & Bertolo, Lidia Sanches & Santos, Rozely Ferreira dos, 2016. "Identifying driving forces of landscape changes: Historical relationships and the availability of ecosystem services in the Atlantic forest," Ecosystem Services, Elsevier, vol. 22(PA), pages 11-17.

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