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Title: Effects of landscape metrics and land use variables on macroinvertebrate communities and habitat characteristics
Authors: Cortes, R.
Varandas, S.
Teixeira, Amílcar
Hughes, Samantha
Magalhães, Marco
Barquín, José
Álvarez-Cabria, Mario
Fernández, Diego
Keywords: Fractal
Land use
Issue Date: 2011
Publisher: Asociación Ibérica de Limnología
Citation: Cortes, R.M.V.; Varandas, S.; Teixeira, A.; Hughes, S.; Magalhães, M.; Barquín, J.; Álvarez-Cabria, M.; Fernández, D. (2011) Effects of landscape metrics and land use variables on macroinvertebrate communities and habitat characteristics. Limnetica. ISSN 0213-8409. 30:2, p. 347-362
Abstract: The growing number of studies establishing links between stream biota, environmental factors and river classification has contributed to a better understanding of fluvial ecosystem function. Environmental factors influencing river systems are distributed over hierarchically organised spatial scales. We used a nested hierarchical sampling design across four catchments to assess how benthic macroinvertebrate community composition and lower spatial scale habitat descriptors were shaped by landscape and land-use patterns. We found that benthic macroinvertebrate community structure and composition varied significantly from catchment to habitat level. We assessed and identified fractal metrics of landscape descriptors capable of explaining compositional and functional change in the benthic faunal indicators and compared them with the traditional variables describing land use and reach level habitat descriptors within a 1 km radius of each sampling site. We found that fractal metrics were the best predictor variables for benthic macroinvertebrate community composition, function, instream habitat and river corridor characteristics.
Peer review: yes
ISSN: 0213-8409
Appears in Collections:ARN - Artigos em Revistas Indexados ao ISI/Scopus

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