Ordination Methods in Ecology

Anderson, Andrea

doi:10.2307/2258135

Cited by 82 publications

(54 citation statements)

References 11 publications

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“…The gradient length in standard deviation units and the magnitude of change in species composition were investigated. The NMDS method (Anderson 1971, Kent & Coker 1992, which operates on ranking dissimilarities between samples (Minchin 1987, Shupe 2005, was run choosing autopilot mode with slow and thorough speed and Sorenson similarity coefficient to search for the solution of best fit. The ordination was rerun with the recommended dimensionality.…”

Section: Methodsmentioning

confidence: 99%

An analysis of vegetation and species diversity patterns in sand dune and gravel desert ecosystem

Abdi

Afsharzadeh

2016

Bot. Sci.

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This study provides an analysis of vegetation and environmental relationships as well as diversity patterns in sand dunes and gravel desert plains of northern Badrud, Iran. A total of 63 species representing 49 genera and 15 families were recorded. The largest families were Asteraceae (22.2 %) and Chenopodiaceae (19.0 %). Therophytes (66.67 %) were the dominant life form. Chronological analysis showed 57.14 % Irano-Turani elements. Data from 60 1.5 × 2 m 2 quadrats, selected systematically randomized along three transects, were collected. Both two-way indicator species analysis (TWINSPAN) and cluster analysis using Ward's method resulted in the recognition of three communities: an Artemisia sieberi community in the center plain with a Shannon-Wiener diversity index of 0.3, a Stipagrostis plumosa -Schismus arabicus community on the lower sand dunes with a Shannon-Wiener diversity index of 0.7, and a Haloxylon ammodendron community on the higher sand dunes with a Shannon-Wiener diversity index of 0.2. Detrended correspondence analysis (DCA), non-metric multidimensional scaling (NMDS), and multi-response permutation procedure (MRPP), confirmed the separation of TWINSPAN groups as well as the heterogeneity of the Artemisia sieberi -Schismus arabicus community, suggesting a distinct group with Artemisia sieberi and Schismus arabicus as the dominant species. Vegetation environmental analysis by means of multivariate techniques of principal component analysis (PCA) and canonical correspondence analysis (CCA) indicated that very coarse gravel has a strong negative effect on diversity and a negative effect on species cover percentage. Bare ground showed a highly positive effect on diversity variables. Soil analysis suggests final seral stages of succession towards severe desertification.

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Section: Methodsmentioning

confidence: 99%

An analysis of vegetation and species diversity patterns in sand dune and gravel desert ecosystem

Abdi

Afsharzadeh

2016

Bot. Sci.

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“…Nonmetric multidimensional scaling (NMDS) was selected to analyze the herbaceous plant data because it was evident that the underlying data were nonlinear and non-normal (Anderson 1971). NMDS was run using PC-ORD with 50 runs of the real data along with 100 runs of randomized data.…”

Section: Sampling and Analysis Methodsmentioning

confidence: 99%

Synthesis of Upper Verde River research and monitoring 1993-2008

Neary¹,

Medina²,

Rinne³

2012

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This volume is a state-of-knowledge synthesis of monitoring and research conducted on the Upper Verde River (UVR) of Arizona. It contains information on the history, hydrology, soils, geomorphology, vegetation, and fish fauna of the area that can help land managers and other scientists in successfully conducting ecosystem management and future monitoring and research in this important Southwest river ecosystem. Chapter 1 provides an introduction to the UVR's location, vegetation, climate, soils, and watersheds. A historical and pictorial perspective of the UVR is presented in Chapter 2. The hydrology of the watershed and its current physical condition are covered in Chapters 3 and 4. Geomorphic relationships of the UVR channels are described in Chapter 5. The woody and herbaceous vegetation of the UVR are presented in Chapters 6 and 7. Water quality status and issues of the river are discussed in Chapter 8. The status of the fish fauna and other aquatic organisms are described in Chapter 9. Chapters 10 through 12 present summaries of information resources, research recommendations, a summary of this volume, and conclusions. You may order additional copies of this publication by sending your mailing information in label form through one of the following media. Please specify the publication title and series number. Publishing Services

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“…Meulman & Heiser (1984) describe a canonical form of non-metric multidimensional scaling. Early applications of non-metric multidimensional scaling in ecology were Anderson (1971), Noy-Meir (1974), Austin (1976), Fasham (1977), Clymo (1980) and Prentice (1977;. The simple unfolding model (response models with circular contours) can in principle be fitted by methods of multidimensional scaling (Kruskal & Carroll 1969;Dale 1975;de Sarbo & Rao 1984;Heiser 1987), but Schiffman et al (1981) warn of practical numerical problems that may reduce the usefulness of this approach.…”

Section: Bibliographic Notesmentioning

confidence: 99%

Data Analysis in Community and Landscape Ecology

1995

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Ecological data has several special properties: the presence or absence of species on a semi-quantitative abundance scale; non-linear relationships between species and environmental factors; and high inter-correlations among species and among environmental variables. The analysis of such data is important to the interpretation of relationships within plant and animal communities and with their environments. In this corrected version of Data Analysis in Community and Landscape Ecology, without using complex mathematics, the contributors demonstrate the methods that have proven most useful, with examples, exercises and case-studies. Chapters explain in an elementary way powerful data analysis techniques such as logic regression, canonical correspondence analysis, and kriging.

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Ordination Methods in Ecology

Cited by 82 publications

References 11 publications

An analysis of vegetation and species diversity patterns in sand dune and gravel desert ecosystem

An analysis of vegetation and species diversity patterns in sand dune and gravel desert ecosystem

Synthesis of Upper Verde River research and monitoring 1993-2008

Data Analysis in Community and Landscape Ecology

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