Effects of forest management on epiphytic lichen diversity in Mediterranean forests

Aragón, Gregorio; Martínez, Isabel; Izquierdo, Patricia; Belinchón, Rocío; Escudero, Adrián

doi:10.1111/j.1654-109x.2009.01060.x

Cited by 89 publications

(51 citation statements)

References 53 publications

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“…In the Mediterranean forests of central Spain, the richness of lichen species was higher in old forests at high altitudes with steeper slopes, low management intensity, and high median girths of trees (Aragón et al, 2010).…”

Section: Introductionmentioning

confidence: 92%

Synecological structure of the lichen synusiae within forest natural reserves from the Moldavian Plateau (Romania)

Vicol¹

2015

Turk J Bot

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This study describes and assesses the influence of the particular features of microhabitats on the abundances of lichen species. The research was performed in 4 natural reserves: Seaca-Movileni, Bădeana, Hârboanca-Brăhășoaia, and Bălteni (all within Vaslui county). The distribution of lichen species abundances was investigated in 20 cm × 20 cm sampling units at a height of 1 m above the ground. In the studied area 27 lichen species were sampled in 81 sampling units. Cluster analysis indicated both similarities and dissimilarities between the natural reserves investigated. Kruskal-Wallis tests pointed out significant differences regarding tree girths, depth of rhytidome crevices, and relative abundances of the lichen species. The results of a SIMPER test show that Physconia enteroxantha (Nyl.) Poelt. and Candelaria concolor (Dicks.) Stnr. are the species responsible for the dissimilarities between investigated sites. Mann-Whitney U tests revealed significant dissimilarities between the lichen synusiae investigated. Of all the lichen species recorded, only Physconia enteroxantha and Lecidella elaeochroma (Ach.) M. Choisy were significantly correlated with trees of the genus Quercus. There were fewer trees of the genus Quercus with large girths compared to other analyzed tree genera.

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Section: Introductionmentioning

confidence: 92%

Synecological structure of the lichen synusiae within forest natural reserves from the Moldavian Plateau (Romania)

Vicol¹

2015

Turk J Bot

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“…As a consequence in semi-natural ecosystems the more sensitive species, e.g. cyanolichens (Aragon et al, 2010), could already have been eliminated and thus the remaining community is more tolerant to small increases in N. Nevertheless it is critical to determine the thresholds for semi-natural ecosystems. In fact, conservative estimate suggest than only less than one quarter of Earth's ice-free land can be seen as wild (Ellis and Ramankutty, 2008), pressing humans to push towards sustainability of these so called anthromes (anthropogenic biomes) (Ellis, 2011).…”

Section: Critical Load Of Nitrogen Deposition and Critical Level Of Amentioning

confidence: 99%

Critical loads of nitrogen deposition and critical levels of atmospheric ammonia for semi-natural Mediterranean evergreen woodlands

et al. 2012

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Abstract. Nitrogen (N) has emerged in recent years as a key factor associated with global changes, with impacts on biodiversity, ecosystems functioning and human health. In order to ameliorate the effects of excessive N, safety thresholds such as critical loads (deposition fluxes) and levels (concentrations) can be established. Few studies have assessed these thresholds for semi-natural Mediterranean ecosystems. Our objective was therefore to determine the critical loads of N deposition and long-term critical levels of atmospheric ammonia for semi-natural Mediterranean evergreen woodlands. We have considered changes in epiphytic lichen communities, one of the most sensitive comunity indicators of excessive N in the atmosphere. Based on a classification of lichen species according to their tolerance to N we grouped species into response functional groups, which we used as a tool to determine the critical loads and levels. This was done for a Mediterranean climate in evergreen cork-oak woodlands, based on the relation between lichen functional diversity and modelled N deposition for critical loads and measured annual atmospheric ammonia concentrations for critical levels, evaluated downwind from a reduced N source (a cattle barn). Modelling the highly significant relationship between lichen functional groups and annual atmospheric ammonia concentration showed the critical level to be below 1.9 µg m −3 , in agreement with recent studies for other ecosystems. Modelling the highly significant relationship between lichen functional groups and N deposition showed that the critical load was lower than 26 kg (N) ha −1 yr −1 , which is within the upper range established for other semi-natural ecosystems. Taking into account the high sensitivity of lichen communities to excessive N, these values should aid development of policies to protect Mediterranean woodlands from the initial effects of excessive N.

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“…Abbreviations follow the Table 1. microhabitats and high enrichment in nutrients of substrata (Giordani & Incerti 2008, Aragón et al 2010). …”

Section: Discussionmentioning

confidence: 99%

“…At the habitat level, forest structure, management intensity , Aragón et al 2010, Morley & Gibson 2010, matrix areas (Lindenmayer et al 2000, Debinski 2006, Driscol et al 2013) forest continuity (Fritz & Brunet 2010, Nascimbene et al 2012) and tree species diversity (Jüriado et al 2003, Leppik & Jüriado 2008) are important predictors which affect epiphytic lichen communities.…”

Section: Introductionmentioning

confidence: 99%

Ecological pattern of lichen species abundance in mixed forests of Eastern Romania

Vicol

2016

Ann. For. Res.

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Vicol, I. 2016. Ecological patterns of lichen species abundance in mixed forests of Eastern Romania. Ann. For. Res. 59(2): 237-248.Abstract. The importance of this study consists in the knowledge of the ecological attributes characteristic to mixed forestry habitats and how they affect the structure of the lichen species abundances. The field activities were performed within five forest habitat types from Moldavia Province, characterised mainly by oak mixed forests, riparian mixed forests and mixed beech forests. The habitat variables, tree variables and the lichen species abundances were analysed to get informations on the structural disimilarities, on the one hand, and relationships on the other hand. Within this study no significant disimilarities were found out from abundance lichen species point of view. The lichen species abundances are a result of interactions between components of their microhabitat and macrohabitat. The correlation analysis pointed out the preferences of lichen species to their host trees, especially Quercus and Fraxinus, altitude and tree level variables as are aspect and mosses coverage. The regression analysis has highlighted that the changes in lichen species abundances are caused by macrohabitat level predictors such as host trees represented by Fraxinus. This study demonstrates that, structure of lichen species is influenced by attributes of mixed forest habitats; therefore maintaining the diversity of tree species and ensuring the continuous occurrence of forestry land is necessary for lichen and their habitat conservation.

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Effects of forest management on epiphytic lichen diversity in Mediterranean forests

Cited by 89 publications

References 53 publications

Synecological structure of the lichen synusiae within forest natural reserves from the Moldavian Plateau (Romania)

Synecological structure of the lichen synusiae within forest natural reserves from the Moldavian Plateau (Romania)

Critical loads of nitrogen deposition and critical levels of atmospheric ammonia for semi-natural Mediterranean evergreen woodlands

Ecological pattern of lichen species abundance in mixed forests of Eastern Romania

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