A Typological Classification of Headwater Streams in Ireland

Callanan, Maria; Baars, Jan-Robert; Kelly‐Quinn, Mary

doi:10.3318/bioe.2012.11

Cited by 5 publications

(2 citation statements)

References 46 publications

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“…This factor enabled the distinguishing of alpine-like rivers with considerable river slopes, high kinetic energy, turbulent flow and coarse-grained riverbed material (boulders, stones), from submontane rivers with smaller riverbed slopes, low kinetic energy and fine-grained bottom material (cobbles, pebbles). The environmental variation reflected in our database is large enough to analyse sources of biological variation, as water velocity and substrate are considered to be primary factors affecting biological communities in mountain streams (Lorenz et al, 2004;Baattrup-Pedersen et al, 2006;Brabec & Szoszkiewicz, 2006;Szoszkiewicz et al, 2006;Callanan et al, 2012;Langhammer et al, 2012;Tremp et al, 2012;Vieira et al, 2014;Ceschin et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…A study by Hughes et al (2009) also showed under natural conditions similar response of these groups of organisms to habitat factors in rivers. A study on macroinvertebrate communities by Callanan et al (2012) showed that geology and its co-variables, including conductivity and pH, play a considerable role in defining the distribution of this group of organisms. On the other hand, exclusively macrophyte-based studies also confirm numerous properties of plants potentially indicating response to a typological factor (BaattrupPetersen et al, 2006(BaattrupPetersen et al, , 2008Jusik et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

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Macrophyte and macroinvertebrate patterns in unimpacted mountain rivers of two European ecoregions

et al. 2017

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The aim of the study was to compare the patterns of development of macrophytes and macroinvertebrates in different types of reference mountain rivers. The study is based on reference river sites surveyed throughout the mountains in Poland and Slovakia in two European ecoregions (9-Central Highlands, 10-The Carpathians). A wide range of environmental variables were estimated, including water chemistry, hydromorphology, geology, and the spatial factor. Based on the Jaccard index, macrophyte and macroinvertebrate variation was confirmed between four mountain and upland river types. It was found that the biological diversification is mainly influenced by geological and associated chemical factors. In the case of macroinvertebrates, additionally, the importance of the spatial factor was revealed (difference between ecoregions). Finally, the habitat preferences of various taxa were identified. It was found that extreme mountain conditions can sometimes distort bioindicative response, as was detected in the case of macroinvertebrates in the highest mountain sites. We concluded that consideration of two groups of organisms enables more comprehensive and reliable monitoring than assessment based on a single group, especially when standard bioindicative methods can be distorted by extreme local conditions.

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