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Incorporating the perceptual range of animals into connectivity models

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  • Pe’er, Guy
  • Kramer-Schadt, Stephanie

Abstract

The perceptual range of an animal towards different landscape elements affects its movements through heterogeneous landscapes. However, empirical knowledge and modeling tools are lacking to assess the consequences of variation in the perceptual range for movement patterns and connectivity. In this study we tested how changes in the assumed perception of different landscape elements affect the outcomes of a connectivity model. We used an existing individual-based, spatially explicit model for the dispersal of Eurasian lynx (Lynx lynx). We systematically altered the perceptual range in which animals recognize forest fragments, water bodies or cities, as well as the probability that they respond to these landscape elements. Overall, increasing the perceptual range of the animals enhanced connectivity substantially, both qualitatively and quantitatively. An enhanced range of attraction to forests had the strongest impact, doubling immigration success; an enhanced range of attraction to rivers had a slightly lower impact; and an enhanced range of avoidance of cities had the lowest impact. Correcting the enhancement in connectivity by the abundance of each of the landscape elements in question reversed the results, indicating the potential sensitivity of connectivity models to rare landscape elements (in our case barriers such as cities). Qualitatively, the enhanced perception resulted in strong changes in movement patterns and connectivity. Furthermore, model results were highly parameter-specific and patch-specific. These results emphasize the need for further empirical research on the perceptual capabilities of different animals in different landscapes and conditions. They further indicate the usefulness of spatially explicit individual-based simulation models for recognizing consistent patterns that emerge, despite uncertainty regarding animals’ movement behavior. Altogether, this study demonstrates the need to extend the concept of ‘perceptual ranges’ beyond patch detection processes, to encompass the wide range of elements that can direct animal movements during dispersal through heterogeneous landscapes.

Suggested Citation

  • Pe’er, Guy & Kramer-Schadt, Stephanie, 2008. "Incorporating the perceptual range of animals into connectivity models," Ecological Modelling, Elsevier, vol. 213(1), pages 73-85.
    • Handle: RePEc:eee:ecomod:v:213:y:2008:i:1:p:73-85
    DOI: 10.1016/j.ecolmodel.2007.11.020
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    Citations

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    Cited by:

    1. Yang, Tianxiang & Jing, Dong & Wang, Shoubing, 2015. "Applying and exploring a new modeling approach of functional connectivity regarding ecological network: A case study on the dynamic lines of space syntax," Ecological Modelling, Elsevier, vol. 318(C), pages 126-137.
    2. Imron, Muhammad Ali & Gergs, Andre & Berger, Uta, 2012. "Structure and sensitivity analysis of individual-based predator–prey models," Reliability Engineering and System Safety, Elsevier, vol. 107(C), pages 71-81.
    3. Juliana Menger & William E Magnusson & Marti J Anderson & Martin Schlegel & Guy Pe’er & Klaus Henle, 2017. "Environmental characteristics drive variation in Amazonian understorey bird assemblages," PLOS ONE, Public Library of Science, vol. 12(2), pages 1-20, February.
    4. Koenig, Shantel J. & Bender, Darren J., 2018. "Increasing the function in distance-based functional connectivity assessments: a modified spatial interaction model (SIM) approach," Ecological Modelling, Elsevier, vol. 386(C), pages 47-58.
    5. Katherine A. Zeller & David W. Wattles & Javan M. Bauder & Stephen DeStefano, 2020. "Forecasting Seasonal Habitat Connectivity in a Developing Landscape," Land, MDPI, vol. 9(7), pages 1-20, July.
    6. Malishev, Matthew & Kramer-Schadt, Stephanie, 2021. "Movement, models, and metabolism: Individual-based energy budget models as next-generation extensions for predicting animal movement outcomes across scales," Ecological Modelling, Elsevier, vol. 441(C).
    7. Stoddard, Steven T., 2010. "Continuous versus binary representations of landscape heterogeneity in spatially-explicit models of mobile populations," Ecological Modelling, Elsevier, vol. 221(19), pages 2409-2414.
    8. Jager, Henriette I. & DeAngelis, Donald L., 2018. "The confluences of ideas leading to, and the flow of ideas emerging from, individual-based modeling of riverine fishes," Ecological Modelling, Elsevier, vol. 384(C), pages 341-352.

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