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La diversitat dels líquens saxícoles de l'avantpaís meridional dels Pirineus orientals

Authors: Llop Vallverdú, Esteve; Muñiz Pérez, Diana; Navarro Rosinés, Pere; Roux, Claude; Llimona, Xavier;

La diversitat dels líquens saxícoles de l'avantpaís meridional dels Pirineus orientals

Abstract

[CAT] L’estudi de la biota liquènica saxícola de l’avantpaís meridional dels Pirineus orientals ha aportat un total de 312 tàxons, 14 dels quals corresponen a primeres citacions per a Catalunya: Alyxoria variiformis, Caloplaca emilii, Clauzadea chondrodes, Encephalographa elisae, Hymenelia coerulea, Lathagrium dichotomum, Lecidea swartzioidea, Lemmopsis arnoldiana, Lepraria umbricola, Myriolecis prominens, Placidium adami-borosi, Staurothele nantiana, Thalloidima opuntioides, Toninia tristis subsp. asiae-centralis i Zahlbrucknerella calcarea. A més, C. emilii és nova per a la biota liquènica de la península Ibèrica. L’anàlisi del catàleg s’ha fet en base als diferents substrats geològics i els tipus d’hàbitats examinats. La riquesa específica varia significativament entre els tipus d’hàbitats, però no entre els substrats geològics, tret de les calcàries del cretaci i les dolomies que presenten valors lleugerament superiors. La composició específica és molt variable entre les localitats, independentment del tipus d’hàbitat o el substrat geològic, amb uns valors mitjans dels índexs de dissemblança del 90 %. Aquesta heterogeneïtat en la composició específica mostra una gran variabilitat per a cadascun dels diferents factors considerats, però no entre ells. Per l’altra banda, l’abundància de trets funcionals és força homogènia entre les localitats, amb una mitjana dels valors de l’índex de dissimilitud del 27 %. Tampoc s’observa gaire variabilitat entre els factors considerats. Les característiques de la zona meridional de l’avantpaís pirinenc ofereixen una gran diversitat de substrats geològics, però la diversitat específica de les comunitats saxícoles no sembla lligada a aquest factor. A més, la resposta ecològica dels tàxons és molt similar, malgrat la heterogeneïtat específica.

[EN] Saxicolous lichen diversity from the southern foreland of Eastern Pyrenees This contribution to the knowledge of the saxicolous lichen catalogue from the southern foreland of the eastern Pyrenees has yield a list of 312 taxa. Among them, 14 are newly quoted for Catalonia: Alyxoria variiformis, Caloplaca emilii, Clauzadea chondrodes, Encephalographa elisae, Hymenelia coerulea, Lathagrium dichotomum, Lecidea swartzioidea, Lemmopsis arnoldiana, Lepraria umbricola, Myriolecis prominens, Placidium adami-borosi, Staurothele nantiana, Thalloidima opuntioides, Toninia tristis subsp. asiae-centralis, and Zahlbrucknerella calcarea. In addition, C. emilii is the first record in the Iberian lichen biota. The catalogue has been analysed in terms of available geological substrates and habitat types. Species richness varies markedly between habitats, not between geological substrates, except for a slightly increase in Cretaceous calcareous rocks and dolomites. Species composition is extremely different between sites, independently of habitat or geological substrate. The average value of dissimilarity index reaches the 90 %. This heterogeneity in species composition shows a great variability within the considered factors, but not between those factors. On the other hand, abundance of functional traits holds a large homogeneity between sites, with an average dissimilarity index reaching 27 %. A substantial low variability is found within factors, compared with species composition. The features of the southern Pyrenean foreland affords a large set of geological substrates; however, saxicolous lichen communities do not seem to be related with such diversity. In addition, adaptive responses to ecological factors by lichen community are more steady despite the large specific heterogeneity

Aquest treball ha comptat amb el suport econòmic de l’Institut d’Estudis Catalans (PIN2012-S01/02-LLIMONA; PR2015-S02-LLIMONA; Ajuts Secció Ciències Biològiques 2017 i 2019), del Fons de Recerca Salvador Llimona, de la Delegació de la Garrotxa de la Institució Catalana d’Història Natural i de l’Ajuntament d’Olot (Beca Oriol de Bolòs 2010)

Introducció Materials i mètodes Àrea d’estudi Mostreig Alt Empordà La Garrotxa Osona La Selva Identificació de les espècies Anàlisi de les dades Resultats i Discussió Novetats florístiques i corològiquesCatàleg Anàlisi de la diversitat dels líquens Conclusions Agraïments Bibliografia

Country
Spain
Keywords

Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss, Lichens, Península Ibèrica, Pyrénées-Orientales (France), http://metadata.un.org/sdg/15, Catalunya, Líquens, Pirineus Orientals (França), Trets funcionals, Biodiversitat, Corologia

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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