Exploring the relationships between ecology and species traits in cyanolichens: A case study on Italy

Nimis, Pier Luigi; Martellos, Stefano; Chiarucci, Alessandro; Ongaro, Silvia; Peplis, Marco; Pittao, Elena; Nascimbene, Juri

doi:10.1016/j.funeco.2020.100950

Cited by 7 publications

(9 citation statements)

References 78 publications

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“…In contrast to vascular plants, no comprehensive and continuously maintained trait databases currently exist for lichen species, probably because of the general lack of standardized methods for measuring and calculating functional traits. Nevertheless, lichen functional traits are increasingly used in order to explore ecological processes, and measuring lichen traits for a particular set of sampled species is becoming more common (e.g., [ 16 , 17 , 18 , 19 , 20 ]). In fact, studies have recently been conducted to investigate how lichen functional diversity changes along ecological gradients (e.g., [ 21 , 22 , 23 ]) and how it is affected by forest management (e.g., [ 4 , 24 , 25 ]).…”

Section: Introductionmentioning

confidence: 99%

Direct and Indirect Effects of Management Intensity and Environmental Factors on the Functional Diversity of Lichens in Central European Forests

et al. 2021

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Using 642 forest plots from three regions in Germany, we analyzed the direct and indirect effects of forest management intensity and of environmental variables on lichen functional diversity (FDis). Environmental stand variables were affected by management intensity and acted as an environmental filter: summing direct and indirect effects resulted in a negative total effect of conifer cover on FDis, and a positive total effect of deadwood cover and standing tree biomass. Management intensity had a direct positive effect on FDis, which was compensated by an indirect negative effect via reduced standing tree biomass and lichen species richness, resulting in a negative total effect on FDis and the FDis of adaptation-related traits (FDisAd). This indicates environmental filtering of management and stronger niche partitioning at a lower intensity. In contrast, management intensity had a positive total effect on the FDis of reproduction-, dispersal- and establishment-related traits (FDisRe), mainly because of the direct negative effect of species richness, indicating functional over-redundancy, i.e., most species cluster into a few over-represented functional entities. Our findings have important implications for forest management: high lichen functional diversity can be conserved by promoting old, site-typical deciduous forests with a high richness of woody species and large deadwood quantity.

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Section: Introductionmentioning

confidence: 99%

Direct and Indirect Effects of Management Intensity and Environmental Factors on the Functional Diversity of Lichens in Central European Forests

et al. 2021

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“…The research of the lichen's functional trait variations, for example the type of photobiont, growth forms and reproduction strategies, are a cost-effective alternative to assess the response of communities to ecological gradients, land use, forest disturbance, fragmentation and urbanization; once those traits are related with biotic and abiotic factors such as water availability, temperature, light intensity and many others. Recent studies regarding the cyanolichens functional ecology found response patterns to different environmental conditions (Benítez et al, 2018;Golovko et al, 2020;Jönsson et al, 2017;Koch et al, 2019;Nimis et al, 2020;Phinney et al, 2022). For instance, along a gradient of aridity and light intensity in Italy, cyanolichens were morphologically "simpler" (crustose growth-form and sexually reproducing) in dry habitats on calcareous rocks, and were gradually replaced to "more complex" species (often asexual such as foliose sorediate) until humid and shaded habitats on tree bark (Nimis et al, 2020).…”

Section: Cyanolichens Functional Traitsmentioning

confidence: 99%

“…Recent studies regarding the cyanolichens functional ecology found response patterns to different environmental conditions (Benítez et al, 2018;Golovko et al, 2020;Jönsson et al, 2017;Koch et al, 2019;Nimis et al, 2020;Phinney et al, 2022). For instance, along a gradient of aridity and light intensity in Italy, cyanolichens were morphologically "simpler" (crustose growth-form and sexually reproducing) in dry habitats on calcareous rocks, and were gradually replaced to "more complex" species (often asexual such as foliose sorediate) until humid and shaded habitats on tree bark (Nimis et al, 2020).…”

Section: Cyanolichens Functional Traitsmentioning

confidence: 99%

Pesquisa de cianoliquens: uma análise bibliométrica de 1991 a 2022

Scur¹,

Kitaura²,

Faria³

2022

RSD

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No presente estudo foi realizada uma análise bibliométrica sobre cianoliquens, utilizando como base de dados a ISI Web of Science (WoS). Um total de 244 documentos foram recuperados, publicados no período de 1991 a 2022, e 79 estudos publicados de 2016 a 2022. Considerando todo o período analisado, observou-se um aumento nos estudos com cianoliquens, sendo o ano de 2013 o mais produtivo (21 estudos), seguindo de 2019 (18). Os estudos foram feitos por cientistas de 47 países, com EUA, Canada, Alemanha, Noruega e Suécia como os mais produtivos. A rede bibliométrica das palavras-chave foi agrupada em quatro classes: a primeira e mais isolada incluiu a taxonomia, evolução e seletividade dos parceiros simbióticos, enquanto as outras três classes foram associadas com ecologia, fisiologia, diversidade e conservação de cianoliquens, estas últimas dispostas em uma relação mais próxima, evidenciando que muitas vezes estes aspectos são estudados juntos. Analisando apenas o período de 2016 à 2022, a maioria dos estudos citados apresentam um interesse crescente em estudar a fixação de nitrogênio, ecologia funcional, microbiota associada e macroevolução dos cianoliquens. A análise bibliométrica foi eficaz em demonstrar o estado da arte do estudo dos cianoliquens em um contexto global, e evidenciou os principais tópicos de interesse da comunidade científica, assim como os países, pesquisadores, estudos e revistas que se destacaram.

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“…Photobiont type, that include chlorococcoid green algae, trentepohlioid green algae and cyanobacteria, strongly determines species performance under contrasting climatic conditions (Marini et al, 2011;Nimis et al, 2020). Finally, lichens may reproduce both sexually and asexually (i.e.…”

Section: Lichen Functional Traitsmentioning

confidence: 99%

Networks of epiphytic lichens and host trees along elevation gradients: Climate change implications in mountain ranges

et al. 2020

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1. Several studies have evaluated lichen responses in terms of shifts in species climate suitability, species richness and community composition. In contrast, patterns of co-occurrence among species that could be related to complex species interactions have received less consideration. Biotic interactions play a major role in shaping species niches, fitness and adaptation to new environments. Therefore, considering the specific relationships among co-occurring species is essential to further deepen our knowledge of biodiversity response to climate change. In this perspective, the analysis of lichen ecological networks across elevational gradients may provide a powerful tool to understand how communities are structured and how biotic interactions are modulated by changing climatic conditions. 2. We evaluated the contribution of environmental and species biological attributes to the structure of epiphytic lichen-host tree networks. Specifically, we studied lichen communities considering two different network levels: the whole lichen community, and groups of lichen species that presented similar biological traits. In this framework, we (a) characterized the structure of the epiphytic lichen-host tree networks; (b) assessed how network structure varied with climate, forest attributes and community trait diversity and (c) evaluated the role that biological traits played in the connections established between co-occurring lichens. 3. On the one hand, results indicate that epiphytic lichen communities are dominated by local segregation, suggesting habitat specialization among lichens within their host tree, and that climatic conditions and, to a lesser extent, lichen diversity are the main drivers of community assemblage. On the other hand, the role of lichen species in the networks depends on their particular biological traits, supporting the hypothesis that biological traits contribute to shape network structure by influencing the ability of the species to interact between each other. These findings warn about the potential impact of climate change on epiphytic lichen communities. 4. Synthesis. This study builds towards a better understanding of lichen community assembly and on biodiversity response to climate change in forest alpine ecosystems. In particular, our results highlight the value of lichen-tree networks to inform about assemblage processes acting at different organizational levels and indicate | 1123

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Exploring the relationships between ecology and species traits in cyanolichens: A case study on Italy

Cited by 7 publications

References 78 publications

Direct and Indirect Effects of Management Intensity and Environmental Factors on the Functional Diversity of Lichens in Central European Forests

Direct and Indirect Effects of Management Intensity and Environmental Factors on the Functional Diversity of Lichens in Central European Forests

Pesquisa de cianoliquens: uma análise bibliométrica de 1991 a 2022

Networks of epiphytic lichens and host trees along elevation gradients: Climate change implications in mountain ranges

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