Similarity-based testing for community pattern: the two-way layout with no replication

Clarke, K.R.; Warwick, R.M.

doi:10.1007/bf00699231

Cited by 489 publications

(294 citation statements)

References 24 publications

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“…In the global test, the null hypothesis was rejected at a significance level of P \ 0.05 (Smith, 2003). All multivariate analyses were performed with the PRIMER 5.0 computer package (Clarke & Warwick, 1994).…”

Section: Discussionmentioning

confidence: 99%

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Kang

Tao

et al. 2016

Hydrobiologia

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The East Asian monsoon and related seasonal rain belts are assumed to be significantly variable at intraseasonal, interannual, and interdecadal time scales, and largely determine the hydrology and ecological processes of the streams and rivers in this region. This study investigated the spatiotemporal variation in fish assemblages and the relative importance of local habitat and regional landscape variables in two protected streams in the middle Yangtze River basin. We hypothesized that the stream fish assemblages in this area are strongly influenced by the monsoon climate, and display a spatiotemporal variation in response to changes of stream flow regimes and physical habitats. The results show that species richness and abundance varied with both season and stream size. The distance to the downstream confluence site was the top important environmental factor, followed by altitude and downstream link. The results suggest that the fish assemblages within this protected watershed are mainly affected by regional landscape variables such as longitudinal position and stream position, but less by local habitat variables including water temperature and habitat types. The study highlights the importance of tributary connectivity and continuity to stream fish diversity in this area, indicating that restoration activities should preferentially recover the connectivity between upstream and downstream.Handling editor: M. Power

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Section: Discussionmentioning

confidence: 99%

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Kang

Tao

et al. 2016

Hydrobiologia

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“…Nonparametric analysis of similarity (ANOSIM) (Clarke and Warwick, 1994) was used to test the significance of the differences between communities as suggested (Rees et al, 2005). The ANOSIM tests the hypothesis that the average rank similarity between the objects within a group is the same as the rank similarity between objects between groups.…”

Section: Discussionmentioning

confidence: 99%

High aromatic ring-cleavage diversity in birch rhizosphere: PAH treatment-specific changes of I.E.3 group extradiol dioxygenases and 16S rRNA bacterial communities in soil

Sipilä

Keskinen²,

Akerman³

et al. 2008

The ISME Journal

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Genes encoding key enzymes of catabolic pathways can be targeted by DNA fingerprinting to explore genetic degradation potential in pristine and polluted soils. We performed a greenhouse microcosm experiment to elucidate structural and functional bacterial diversity in polyaromatic hydrocarbon (PAH)-polluted soil and to test the suitability of birch (Betula pendula) for remediation. Degradation of PAHs was analysed by high-performance liquid chromatography, DNA isolated from soil amplified and fingerprinted by restriction fragment length polymorphism (RFLP) and terminal restriction fragment length polymorphism (T-RFLP). Bacterial 16S rRNA T-RFLP fingerprinting revealed a high structural bacterial diversity in soil where PAH amendment altered the general community structure as well as the rhizosphere community. Birch augmented extradiol dioxygenase diversity in rhizosphere showing a rhizosphere effect, and further pyrene was more efficiently degraded in planted pots. Degraders of aromatic compounds upon PAH amendment were shown by the changed extradiol ring-cleavage community structure in soil. The RFLP analysis grouped extradiol dioxygenase marker genes into 17 distinct operational taxonomic units displaying novel phylogenetic clusters of ring-cleavage dioxygenases representing putative catabolic pathways, and the peptide sequences contained conserved amino-acid signatures of extradiol dioxygenases. A branch of major environmental TS cluster was identified as being related to Parvibaculum lavantivorans ring-cleavage dioxygenase. The described structural and functional diversity demonstrated a complex interplay of bacteria in PAH pollution. The findings improve our understanding of rhizoremediation and unveil the extent of uncharacterized enzymes and may benefit bioremediation research by facilitating the development of molecular tools to detect and monitor populations involved in degradative processes.

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“…Data were transformed using the log 10 (n+1) function to allow the less abundant variable to exert same influence on the calculation of similarities (Clarke & Warwick, 1994).…”

Section: Statistical Analysesmentioning

confidence: 99%

Water Quality Analysis of the Coastal Regions of Sundarban Mangrove Wetland, India Using Multivariate Statistical Techniques

Sarkar¹,

Bhattacharya²

2010

Environmental Management

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Similarity-based testing for community pattern: the two-way layout with no replication

Cited by 489 publications

References 24 publications

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

Hydrologic connectivity driven natural stream fish assemblages in mountain streams in the Yangtze River basin: implications for stream fish conservation in monsoonal East Asia

High aromatic ring-cleavage diversity in birch rhizosphere: PAH treatment-specific changes of I.E.3 group extradiol dioxygenases and 16S rRNA bacterial communities in soil

Water Quality Analysis of the Coastal Regions of Sundarban Mangrove Wetland, India Using Multivariate Statistical Techniques

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