Authors:J. Lovett-Doust, A. Hegazy, O. Hammouda and N. Gomaa
Abundance-occupancy relationships were determined for desert plants in the northwestern Red Sea region, at both the whole landscape, and individual habitat levels. Some 58 stands (having a total of 66 species) were studied, using ten quadrats (10 × 10 m
) per stand. The relation was positive and highly significant at both scales, but stronger at habitat level than across the regional landscape. Niche-breadth was estimated as the number of habitats occupied regionally by a species, and was significantly related to both abundance and occupancy. Niche breadth explained just 10.1%of variation in abundance but some 56.2% of variation in occupancy. Using empirical data, we tested whether those abundance-occupancy relationships diverged significantly from a theoretical null model. Relationships diverged significantly from the null model at both regional landscape and habitat levels. Applications of abundance-occupancy relationships for plant conservation showed that 36% of the species in the study region is at risk of extinction.
Authors:DONATELLA FIORANI, MARTA ACIERNO, SILVIA CUTARELLI and ADALGISA DONATELLI
BIBLIOGRAPHY Acierno et al. 2017 Marta Acierno – Stefano Cursi – Donatella Fiorani – Davide Simeone : Architectural Heritage Knowledge Modelling: an Ontology-Based Framework for Conservation Process . Journal of Cultural Heritage
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Coincidence and mismatch of biodiversity hotspots: a global survey for the
A recent paper about plutonium disproportionation confuses charge balance with charge conservation. To explain disproportionation, impossible solutions in which the charges do not balance were proposed.