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B&uuml;cker, A.; Sondermann, M.; Frede, H. &amp; Breuer, L. (2010): <b>The influence of land-use on macroinvertebrate communities in montane tropical streams - a case study from Ecuador</b>. <i>Fundamental and Applied Limnology</i> <b>177</b>, 267-282.

Resource Description

Title: The influence of land-use on macroinvertebrate communities in montane tropical streams - a case study from Ecuador
FOR816dw ID: 915
Publication Date: 2010-08-01
License and Usage Rights:
Resource Owner(s):
Individual: Amelie Bücker
Contact:
Individual: Martin Sondermann
Contact:
Individual: Hans-Georg Frede
Contact:
Individual: Lutz Breuer
Contact:
Abstract:
Despite the importance of tropical montane cloud forest streams, studies investigating aquatic communities<br/> in these regions are rare and knowledge on the driving factors of community structure is missing. The objectives<br/> of this study therefore were to understand how land-use infl uences habitat structure and macroinvertebrate<br/> communities in cloud forest streams of southern Ecuador. We evaluated these relationships in headwater streams<br/> with variable land cover, using multivariate statistics to identify relationships between key habitat variables and<br/> assemblage structure, and to resolve differences in composition among sites. Results show that shading intensity,<br/> substrate type and pH were the environmental parameters most closely related to variation in community composition<br/> observed among sites. In addition, macroinvertebrate density and partly diversity was lower in forested sites,<br/> possibly because the pH in forested streams lowered to almost 5 during spates. Standard bioindicator metrics were<br/> unable to detect the changes in assemblage structure between disturbed and forested streams. In general, our results<br/> indicate that tropical montane headwater streams are complex and heterogeneous ecosystems with low invertebrate<br/> densities. We also found that some amount of disturbance, i.e. patchy deforestation, can lead at least initially to an<br/> increase in macroinvertebrate taxa richness of these streams.
Additional Infos:
The underlying research data are available on Pangaea database: http://doi.pangaea.de/10.1594/PANGAEA.777749
Keywords:
| cloud forest | acroinvertebrates | land-use | indicators | neotropics | canonical correspondence analysis (CCA) | non-metric mutidimensional scaling (NMDS) |
Literature type specific fields:
ARTICLE
Journal: Fundamental and Applied Limnology
Volume: 177
Page Range: 267-282
Publisher: E. Schweizerbart?sche Verlagsbuchhandlung
ISSN: 1863-9135
Metadata Provider:
Individual: Bernhard Runzheimer
Contact:
Online Distribution:
Download File: http://www.lcrs.de/publications.do?citid=915


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