Which factors shape macrozoobenthic communities in tufa springs Results from Austrian meteogene travertine-depositing sitesReportar como inadecuado




Which factors shape macrozoobenthic communities in tufa springs Results from Austrian meteogene travertine-depositing sites - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Hydrobiologia

pp 1–15

First Online: 20 May 2017Received: 10 November 2016Revised: 24 April 2017Accepted: 29 April 2017DOI: 10.1007-s10750-017-3228-x

Cite this article as: Bednar, JP., Trobej, M., Schagerl, M. et al. Hydrobiologia 2017. doi:10.1007-s10750-017-3228-x

Abstract

By studying 14 travertine-depositing springs all over Austria, we hypothesized the existence of 1 key elements of the physical and chemical template ultimately defining the structure of macroinvertebrate taxa composition and 2 a specific, travertine-associated macrozoobenthic taxa community in an environment shaped by ongoing deposition of calcium carbonate and the ever-changing limestone structures thereby created. For testing these hypotheses, we measured 29 geological and limnochemical parameters and collected benthic macroinvertebrates on travertine, coarse and fine particular organic matter microhabitats in a spring and autumn sampling run. The results identified four parameters significantly shaping taxa composition: sinter coverage, total phosphorous, oxygen concentration and the Langelier saturation index. The macroinvertebrate community was predominantly composed of stygobiontic taxa from groundwater refugia and of immigrated generalists that prefer the stable conditions offered in spring habitats. We found only few species and specialists separating study sites, the majority being well-known spring- and headwater-dwelling species without adaptation to high carbonate precipitation or association with travertine. Nonetheless, carbonate precipitation leads to higher structural heterogeneity and provides a range of new niches, which contribute to broader ranges of taxonomic diversity.

KeywordsTufa Springs Zoobenthos Limnochemistry Carbonate precipitation Electronic supplementary materialThe online version of this article doi:10.1007-s10750-017-3228-x contains supplementary material, which is available to authorized users.

Handling editor: Eric Larson





Autor: Jean-Pierre Bednar - Manuela Trobej - Michael Schagerl - Johann Waringer

Fuente: https://link.springer.com/







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