96 research outputs found

    Diversity and Functional Traits of Lichens in Ultramafic Areas: A Literature Based Worldwide Analysis Integrated by Field Data at the Regional Scale

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    While higher plant communities found on ultramafics are known to display peculiar characteristics, the distinguishability of any peculiarity in lichen communities is still a matter of contention. Other biotic or abiotic factors, rather than substrate chemistry, may contribute to differences in species composition reported for lichens on adjacent ultramafic and non-ultramafic areas. This work examines the lichen biota of ultramafics, at global and regional scales, with reference to species-specific functional traits. An updated world list of lichens on ultramafic substrates was analyzed to verify potential relationships between diversity and functional traits of lichens in different Köppen–Geiger climate zones. Moreover, a survey of diversity and functional traits in saxicolous communities on ultramafic and non-ultramafic substrates was conducted in Valle d’Aosta (North-West Italy) to verify whether a relationship can be detected between substrate and functional traits that cannot be explained by other environmental factors related to altitude. Analyses (unweighted pair group mean average clustering, canonical correspondence analysis, similarity-difference-replacement simplex approach) of global lichen diversity on ultramafic substrates (2314 reports of 881 taxa from 43 areas) displayed a zonal species distribution in different climate zones rather than an azonal distribution driven by the shared substrate. Accordingly, variations in the frequency of functional attributes reflected reported adaptations to the climate conditions of the different geographic areas. At the regional scale, higher similarity and lower species replacement were detected at each altitude, independent from the substrate, suggesting that altitude-related climate factors prevail over putative substrate–factors in driving community assemblages. In conclusion, data do not reveal peculiarities in lichen diversity or the frequency of functional traits in ultramafic areas

    Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU

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    Contains fulltext : 172380.pdf (publisher's version ) (Open Access

    A Conspectus of the Lichens (Lichenized Fungi) of Singapore

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    Volume: 61Start Page: 437End Page: 48

    Provisional checklist for the lichens of Chiapas

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    A list is presented of 359 lichen taxa known so far from Chiapas (Mexico). It is based on literature records and recent collections made by Breedlove and by Wolf and collaborators. The actual lichen flora of Chiapas is estimated to be certainly much larger.Se presenta una lista preliminar de 359 taxa de líquenes del estado de Chiapas, México, basada en datos de la literatura y colectas recientes de Breedlove y de Wolf y sus colaboradores. Se estima que el número total de especies para el estado es considerablemente más grande

    New or interesting lichen records from Guatemala I

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    Estudio biogeográfico de los agaricales de bosques de que rcushumboltii del departamento de Antioquia.

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    IP 1115-13-141-96Biota Colombiana vol. 1 no. 1 (2000); p. 25-42 -- ISSN 01245376'-- una nueva especie de macrolepiota de;A.E. Franco -- En: Congreso Latinoamericano de Micologia (0,1251999 ago. 31-sep. 3 : Caracas) -- ARTICULO(S);EN REVISTA: Hongos agaricales y boletales de colombia / Ana Esperanza Franco Molano, Emilce Uribe Calle - En:;Colombia / Ana Esperanza Franco Molano -- En: Actual Biol'-- Vol. 21 no. 70 (1999); p. 13-17. -- ISSN;03043584.;LIBRO(S): Setas de Colombia (agaricales, boletales y otroshongos) / Ana Esperanza Franco, Ruth;Aldana-Gomez, Roy E.Halling - Medellin : Universidad de Antioquia, 2000 -156 p ; 20 cm - ISBN 9586554572. --;PONENCIA(S) EN CONGRESO: Diversity and distribution of agaricaceae in costa rica and Colombia. / Ana E. Franco;Molano -- p. 59 -- En: Tropical Diversity: Origins, Maintenanceand conservation : Symposium and annual;meeting of the Association for tropical Biology Organization fortropicalstudies (1997 Jun. 15-20 : San Jose,;Costa Rica) -- San Jose : Universidad de Costa Rica, 1997.--p.; 28 cm.'-- the Agaricales of Colombian Oak;Forests. / Ana Esperanza Franco Molano -- En: International mycological congress. (6 : 1998 Aug. 23-28 :;Jerusalem, Israel) -- [s.l. : s.n.], 1998 -- p. ; 14 cm --Thegenus Lepiota sensu lato in tropical America
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