Search

Your search keyword '"Annalena Cogoni"' showing total 2 results
Start Over Author "Annalena Cogoni" Publisher elsevier
2 results on '"Annalena Cogoni"'

1. Bryophyte, lichen, and vascular plant communities of badland grasslands show weak cross-taxon congruence but high local uniqueness in biancana pediments

Author

Emanuele Fanfarillo, Stefano Loppi, Claudia Angiolini, Giovanni Bacaro, Elisabetta Bianchi, Gianmaria Bonari, Ilaria Bonini, Giulia Canali, Giacomo Cangelmi, Silvia Cannucci, Annalena Cogoni, Paola De Giorgi, Luca Di Nuzzo, Leopoldo de Simone, Tiberio Fiaschi, Daniel Fontana, Jacopo Franzoni, Antonio Giacò, Paolo Giordani, Martina Grattacaso, Lorenzo Lazzaro, Stefano Martellos, Irene Mazza, Michele Mugnai, Giulio Pandeli, Claudia Perini, Lorenzo Pinzani, Silvia Poponessi, Sonia Ravera, Elena Salerni, Adriano Stinca, Manuel Tiburtini, Chiara Vallese, and Simona Maccherini

Subjects
Biodiversity surrogate, Cryptogams, Community ecology, Mosses, Multi-taxon, Ecology, QH540-549.5
Abstract

Cross-taxon congruence, i.e., using certain taxonomic groups as surrogates for others, is receiving growing interest since it may allow decreasing efforts in biodiversity studies. In this work, we investigated the patterns of cross-taxon congruence in species richness and composition between communities of bryophytes, lichens, and vascular plants in different biancana grasslands of a Special Area of Conservation (SAC) of central Italy. We recorded species presence and abundance in 16 plots of 1 × 1 m size and analyzed the data using Procrustes correlation, co-correspondence analysis, and indicator species analysis. We did not highlight any correlation in species richness and composition between the three taxonomic groups. Conversely, the species composition of bryophyte communities was predictive of the species composition of lichen communities. Moreover, lichen richness was negatively correlated with the total cover of vascular plants. Indicator species analysis evidenced the presence of species from the three biotic communities being particularly related, at least at the local scale, to biancana pediments, like the bryophytes Didymodon acutus and Trichostomum crispulum, the lichens Enchylium tenax, Cladonia foliacea, and Psora decipiens, and the vascular plants Brachypodium distachyon, Parapholis strigosa, and Artemisia caerulescens subsp. cretacea. In the biancana pediments, acrocarp mosses, squamulose lichens, therophyte plants and chamaephyte plants coexisted. In spite of the weak cross-taxon congruence between the three taxonomic groups, this study could highlight a locally unique diversity of bryophytes, lichens, and vascular plants related to the extreme environment of biancana pediments, selected by high soil salinity and deposition from the upper eroded slope. Soil erosion and deposition in biancana badlands supports the increase of local multi-taxonomic plant diversity by creating unique ecosystems. Such biodiversity should be considered locally at risk of disappearance, due to the ongoing vanishing of biancana badlands in central Italy.

Published
2024
Full Text
View/download PDF

2. Heavy metal tolerance strategies in metallicolous and non-metallicolous populations of mosses: Insights of γ+β-tocopherol regulatory role

Author

Antonio Hernández, Annalena Cogoni, Antonio De Agostini, José María Becerril, Raquel Esteban, Pierluigi Cortis, and Andrea Vacca

Subjects
tolerance, Chemistry, pigments, mining soils, Plant Science, Metal, Biochemistry, visual_art, bryophytes, visual_art.visual_art_medium, bryological attributes, Tocopherol, Agronomy and Crop Science, Ecology, Evolution, Behavior and Systematics, tocopherols
Abstract

[EN] As bryophytes present the capacity to colonize a wide range of habitats, including extreme environments (e.g., mine areas), we first checked the global response of bryophytes to heavy metals (HM) by a systematic review. This analysis found i) the lack of studies in a polluted environment and ii) resulted in a global trend of photochemical efficiency decrease when bryophytes faced heavy metals. Secondly, we characterized the photoprotective responses of four metallicolous populations of mosses (Lewinskya rupestris, Polytrichum commune, Ptychostomum compactum and Rhynchostegium confertum) naturally growing in an abandoned mine area by an experimental field approach. As a result, we found markedly species-specific tolerance patterns: i) less tolerant species, presenting high pollutants content accompanied by marked dissipative and antioxidative strategies. This strategy was depicted by the species R. confertum that result to be a good sentinel species due to the high pollutant content and high physiological sensitivity.; ii) intermediate tolerant species presenting a medium content of pollutants and less marked photoprotective mechanisms, and iii) most tolerant species minimizing pollutants content and consequently presenting no changes in their physiological performance. This evidence support that species' bryological attributes have a key role in determining species' tolerance towards environmental heavy metals, and should be taken into consideration in future studies. The findings of this study also pointed out that the higher levels of gamma + beta-tocopherol in metallicolous populations could play a regulatory role in metal stress tolerance in mosses and it could be a suitable functional responsive trait for environmental response prediction to heavy metals in polluted environments. This work was supported by the following research grants: UPV/EHU-GV IT-101816 (from the Basque Government) ; Antonio De Agos-tini's PhD grant and period abroad at the University of the Basque Country was funded by the University of Cagliari, PhD course "Earth and Environmental Sciences and Technologies"

Published
2022

Catalog

Books, media, physical & digital resources
See catalog results