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GIS-based detection and quantification of patch-boundary patterns for identifying landscape mosaics

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Hardt, Elisa and López de Pablo, Carlos Tomás and Martín de Agar, Pilar and Dos Santos, R. F. and Pereira-Silva, E. F. (2018) GIS-based detection and quantification of patch-boundary patterns for identifying landscape mosaics. Applied ecology and environmental research, 16 (2). pp. 1381-1398. ISSN 1589 1623, ISSN (Online): 1785 0037

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Abstract

The study of boundaries between patches allows us to understand the complexity of landscape interactions, especially those involved in the anthropic use of natural resources, which is a common source of environmental problems when harnessing landscape services. The study of the relationships between those two elements makes it possible to identify distinct homogeneous environmental areas in which the same ecological interactions occur. These areas are the mosaics that make up a landscape. This paper presents a GIS-based procedure to identify and quantify the boundaries of land use/cover patches and to record those data in matrices of patches by boundaries. These matrices, by means of a multivariate analysis, allow us to recognize landscape mosaics. This semi-automated procedure contributes to making the concept of landscape mosaics operative and enabling its application to landscape management. To exemplify its possibilities, we tested three alternatives for quantifying boundary measures: presence/absence, frequency and length. They each describe interactions with different details and provide different nuances in interpretations of landscape organization. In the study case, the frequency data provided a more easily understandable interpretation of the mosaic identification and characterization of landscape heterogeneity because these data are less conditioned by the spatial distribution, size or length of rare boundaries. Irrespective of the boundary measure used, a large central mosaic is always identified, highlighting the influence of landscape homogeneity and fragmentation on mosaic identification and the robustness of the tested procedure.


Item Type:Article
Uncontrolled Keywords:Landscape ecology; Landscape evaluation; Landscape model; Land use and cover; Spatial analysis
Subjects:Medical sciences > Biology > Ecology
ID Code:47318
Deposited On:25 Apr 2018 10:35
Last Modified:25 Apr 2018 11:31

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