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Grazing pressure versus environmental covariates: Effects on woody and herbaceous plant biodiversity on a limestone mountain in northern Tunisia

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784 days ago
Grazing pressure versus environmental covariates: Effects on woody and herbaceous plant biodiversity on a limestone mountain in northern Tunisia https://t.co/82kOkXPmPA
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Supplemental Information

Supplementary Material - Results

DOI: 10.7287/peerj.preprints.27089v1/supp-1

Woody plant species on Jebel Ichkeul; plants are listed alphabetically by scientific name (Le Flo’ch et al. 2011)

DOI: 10.7287/peerj.preprints.27089v1/supp-2

Herbaceous plant species on Jebel Ichkeul; plants are listed alphabetically by scientific name (Le Flo’ch et al. 2011)

DOI: 10.7287/peerj.preprints.27089v1/supp-3

A. Bubble plot of relative proportions of Pistachia lentiscus in non-metric multidimensional scaling ordination diagram based on 78 quadrats at Jebel Ichkeul. Keys shows proportional occurrence at each site and grazing index. B. Bubble plot

DOI: 10.7287/peerj.preprints.27089v1/supp-4

Mean values for environmental covariates under different grazing regimes: altitude (m a.s.l.) and distances (m) to roads, farms, urban nuclei and streams. Bars shown mean ± SE. Different letters above the bars indicate significant differences (one-way perm

DOI: 10.7287/peerj.preprints.27089v1/supp-5

Mean values for species richness and Shannon-diversity indices under different grazing regimes. Bars shown mean ± SE. Different letters above the bars indicate significant differences (one-way permutational multivariate ANOVA, 9999 permutations; pair-wise

DOI: 10.7287/peerj.preprints.27089v1/supp-6

Additional Information

Competing Interests

The authors declare that they have no competing interests. However, the first author is Chief Executive officer of, and owns, the ecological research consultancy, Aquila Conservation & Environment Consulting. There is no financial relationship of any kind between the submitted research and the company 'Aquila Conservation & Environment Consulting' or any other organization. The original fieldwork and preparation of the original thesis were funded by the Natural Environment Research Council (UK) and done at University College London in 1983.

Author Contributions

David Anthony Kirk conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

F. B. Goldsmith conceived and designed the experiments, approved the final draft, helped with field design, supervised project, commented on manuscript.

Data Deposition

The following information was supplied regarding data availability:

Jebel Ichkeul woody and herbaceous 78 sites.xls

https://1drv.ms/x/s!AgUe8D9jLm0qiWapD7zvLRtScih5

Funding

This work was supported by the Natural Environment Research Council (UK). The first author was funded by Ivan and Thelma Kirk. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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