Spatial Distribution of Algal Assemblages in a Temperate Lowland Peat Bog

Machová‐Černá, Kateřina; Neustupa, Jiří

doi:10.1002/iroh.200811058

Cited by 13 publications

(5 citation statements)

References 56 publications

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“…Cooper et al (1998) discussed the need for studying stream processes at multiple spatial scales. However, few studies document spatial variation in periphyton assemblages within streams, and those that do tend to focus on patterns across either microscales (a single rock or among rocks) or very large scales (ecoregion) or are within a very different system, such as a peat bog (Korte & Blinn, 1983;Passy, 2001;Soininen, 2003;Lindstrøm et al, 2004;Heino & Soininen, 2005;Machová-Č erná & Neustupa, 2009). Still others focused on substrate type, variability in identification techniques or who was counting the slide (BesseLototskaya et al, 2006), but two important scales of variation, intra-riffle (within a riffle) and inter-riffle (among riffles), have not been adequately addressed in the literature.…”

Section: Introductionmentioning

confidence: 97%

The spatial heterogeneity of diatoms in eight southeastern Ohio streams: how far does a single riffle reach?

Hollingsworth

Vis

2010

Hydrobiologia

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Periphyton is a commonly used biomonitoring tool for streams. Often only one or few riffles are sampled and assumed to be representative of a stream reach. Current literature focuses on periphyton heterogeneity at small scales, on individual rocks within a riffle, and larger scales, within watersheds or ecoregions. The intermediate scales, within single riffles or among riffles, have not been adequately addressed. The purpose of this research was to determine how many riffles must be sampled in order to represent a reach and whether the number of necessary riffles varied with stream health. Since periphyton is sensitive to habitat change, it was hypothesized that heterogeneity would be primarily partitioned among riffles. Eight to ten consecutive riffles were sampled at eight individual stream reaches. Sampled reaches were categorized based on previously collected bioassesment data: three nonattaining, three partially-attaining, and two fullyattaining water quality standards as defined by the Ohio Environmental Protection Agency. Data were analyzed using the Bray-Curtis Similarity Index, Hill's N 2 dominance diversity index, and the Acid Mine Drainage Diatom Index of Biotic Integrity. Diatoms appeared to be patchily distributed within a reach. This patchiness often led to varied relative abundance of common species and the introduction or loss of rare species among riffles. To account for this variation within a reach, at least two riffles should be sampled. However, a multimetric index may correctly classify a stream based on a one-riffle sample. Variation does not appear to correspond directly to stream health, but to species richness and diversity.

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Section: Introductionmentioning

confidence: 97%

The spatial heterogeneity of diatoms in eight southeastern Ohio streams: how far does a single riffle reach?

Hollingsworth

Vis

2010

Hydrobiologia

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“…This study follows our previous study (Machová -Černá and Neustupa, 2009) concerning spatial distribution of algae in a lowland peat bog. In that study, we found that the spatial heterogeneity of algal assemblages was mainly influenced by seasonal succession related to winter disturbance, microhabitat type, spatial distance between samples and conductivity.…”

Section: Introductionmentioning

confidence: 96%

Small-scale spatial variation of benthic algal assemblages in a peat bog

Černá¹

2010

Limnologica

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a b s t r a c tSpatial patterns on a very small scale (10 cm), and the effect of artificial barriers on the composition of phytobenthic algal assemblages along two transects within different microhabitat types were investigated. Samples were taken in a peat bog along linear transects on a scale of 10 cm, and water chemistry was examined. The distribution of algae along both transects was influenced by both spatial distance and environmental conditions in similar proportions. Differences in species composition in various parts of the transects were observed, but this pattern was primarily related to the abundance of species, rather than to their presence/absence in samples. Similarity in species composition correlated with spatial distance and environmental parameters in both microhabitat types. I concluded that, given a homogenous environment on a small scale, spatial distribution of algae is affected by both the environmental conditions of the microhabitats and their dispersal limitations. Moreover, an artificial barrier constituted an obstruction for water and nutrient flow, as well as algal migration, and had an impact on species composition.

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“…differences among samples taken a few centimeters apart) tends to be relatively less correlated with the environmental factors than with actual spatial distance. Both deterministic habitat‐filtering based community patchiness reflecting the patchiness of microhabitats (Machová‐Černá & Neustupa ; Černá ; Neustupa et al ), biotic interactions—differential dispersal, competition (Passy ), and stochastic dispersion‐related processes, such as priority effect with subsequent monopolization of resources (Svoboda et al ), might affect the observed patterns.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies, which focused on different algal groups, described temporal (seasonal) variation of primary production or species composition (Ledger & Hildrew ; Aguilera et al ; Špačková et al ), whereas desmid communities in strongly temperate climate with great temperature fluctuations proved to be extremely stable during a 3‐year study (Svoboda et al ). The observed seasonal fluctuations of the community structure (species composition and abundance) in temperate regions may be attributed to the variation of water temperature, light intensity, nutrient content, or disturbances such as freezing periods (Talling & Parker ; Zalack et al ; Roberts et al ; Machová‐Černá & Neustupa ).…”

Section: Introductionmentioning

confidence: 99%

Small‐scale variation of corticolous microalgal covers: Effects of microhabitat, season, and space

Štifterová

Neustupa

2017

Phycological Research

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The present study focuses on temporal and microscale spatial variation of the community structure and richness of subaerial microalgae growing on the bark of European beech (Fagus sylvatica) trees in temperate deciduous forests. Subaerial phototrophic biofilms present common and conspicuous microalgal communities growing on a variety of natural and man-made substrata. However, in comparison with other major microalgal communities such as phytoplankton and microphytobenthos, basic patterns of their spatio-temporal variation remain largely unknown. The bark samples were collected six times each spring and autumn in a period of 3 years (2010-2013) and were cultured on agar plates, and then individual clonal strains were identified by light microscopy. A total of 55 morphotypes (considered as operational taxonomic units for subsequent analyses) were recognized, which mainly belong to the classes Trebouxiophyceae and Chlorophyceae. Interestingly, temporal variation explained the largest proportion of variation in the community structure. This variation was primarily related to seasonal fluctuations, and although the communities recorded in spring and autumn showed many overlapping taxa, a clear distinction in species composition and abundance was observed. However, the microhabitat characteristics such as bark roughness also significantly structured the microalgal community. Conversely, spatial factors such as the height of the samples above ground or distance of the samples on a trunk seemed to be of lesser importance on this scale. Thus, we concluded that the previously unrecognized seasonal changes, resulting from variation in temperature, humidity, and irradiance, as well as the non-seasonal temporal changes, possibly resulting from local colonization or extinction of individual taxa, should be considered as one of the important factors in structuring aerial microalgal communities.

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Spatial Distribution of Algal Assemblages in a Temperate Lowland Peat Bog

Cited by 13 publications

References 56 publications

The spatial heterogeneity of diatoms in eight southeastern Ohio streams: how far does a single riffle reach?

The spatial heterogeneity of diatoms in eight southeastern Ohio streams: how far does a single riffle reach?

Small-scale spatial variation of benthic algal assemblages in a peat bog

Small‐scale variation of corticolous microalgal covers: Effects of microhabitat, season, and space

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