Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior Agrária >
Ambiente e Recursos Naturais >
ARN - Artigos em Proceedings Não Indexados ao ISI >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/4662

Título: Environmental drivers of benthic communities: the importance of landscape metrics
Autor: Cortes, R.
Varandas, S.
Hughes, Samantha
Magalhães, Marco
Teixeira, Amílcar
Palavras-chave: Landscape metrics
Soil use
Macroinvertebrates
Habitat
Spatial scale
Issue Date: 2010
Editora: IPB, IUFRO
Citação: Cortes, R.; Varandas, S.; Hughes, S.; Magalhães, M.; Teixeira, A. (2010) - Environmental drivers of benthic communities: the importance of landscape metrics. In In Azevedo, João; Feliciano, Manuel; Castro, José; Pinto, Maria Alice (eds.) Forest landscapes and global change. New frontiers in management, conservation and restoration. Proceedings of the IUFRO Landscape Ecology Working Group International Conference. Bragança: IPB, IUFRO. p. 2-7. ISBN 978-972-745-110-4
Resumo: The distribution of aquatic communities is dependent on processes that act at multiplescales. This study comprised 270 samples distributed over 2 years and used a nested sampling design to estimate the variance associated with three spatial scales: basin, site and microhabitat. Habitat assessment was made using River Habitat Survey. The derived Habitat Quality Indices and the benthic composition were crossed with landscape metrics and types of soil use, obtained from GIS data, using multiple non-parametric regressions and distance-based redundancy analysis. Invertebrate variation was mainly linked with intermediate scale (site) and landscape metrics were the main drivers determining local characteristics. The aquatic community exhibited a stronger relationship with landscape metrics, especially patch size and shape complexity of the dominant uses, than with habitat quality, suggesting that instream habitat improvement is a short-term solution and that stream rehabilitation must address the influence of components at higher spatial scales.
Arbitragem científica: yes
URI: http://hdl.handle.net/10198/4662
ISBN: 978-972-745-110-4
Appears in Collections:ARN - Artigos em Proceedings Não Indexados ao ISI

Files in This Item:

File Description SizeFormat
Cortes et al IUFRO_2010_ short paper_.pdf328,71 kBAdobe PDFView/Open
Statistics
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 


  © Instituto Politécnico de Bragança - Biblioteca Digital - Feedback - Statistics
  Estamos no RCAAP Governo Português separator Ministério da Educação e Ciência   Fundação para a Ciência e a Tecnologia

Financiado por:

POS_C UE