Bosque de roble o plantación de coníferas, ¿qué prefieren los líquenes epífitos?

Simijaca, Diego; Moncada, Bibiana; Lücking, Robert

doi:10.14483/2256201x.12575

Cited by 10 publications

(6 citation statements)

References 28 publications

(46 reference statements)

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“…The structure of the substrate, such as its humidity, texture, pH, host species and tree age, bark fissuring (BF), circumference of the stem at breast height (CBH) [29][30][31][32][33] (Table 1), and characteristics of the environment (illuminance, conservation, disturbance, and alterations), may also affect the occurrence of corticolous lichen [34,35]. The influence of these factors on the morphotype richness, diversity, or abundance of lichen is typically evaluated through the application of an Analysis of Variance (ANOVA) or Generalized Linear Models (GLMs).…”

Section: Introductionmentioning

confidence: 99%

Edge Effects Reflect the Impact of the Agricultural Matrix on the Corticolous Lichens Found in Fragments of Cerrado Savanna in Central Brazil

et al. 2020

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Habitat fragmentation affects lichen communities by inducing edge effects, although the dispersal of pollutants by pesticide drift from commercial crops may also provoke alterations in community structure, due to the varying sensitivity of lichen morphotypes to pollutants. In this context, we tested the hypothesis that lichen morphotype richness and diversity, and the percentage area of the trunks covered by different lichen morphotypes are modified significantly at the edges of fragments of Cerrado vegetation inserted within the agricultural matrix. We evaluated habitat fragments representing different Cerrado formations (Cerradão, Cerrado sensu stricto, and seasonal semi-deciduous forest) as well as the Emas National Park, a prominent Cerrado conservation unit. We used Generalized Linear Mixed Models (GLMMs) to test the potential of the models compiled using a mixture of phytosociological and environmental parameters, including the species, the height of the host plant (H), the circumference of its stem at breast height (CBH), total chlorophyll (TC), bark fissuring (BF) and pH, and illuminance (Lum), to explain the observed variation in the lichen morphotype richness and the percentage cover of the trunks by corticolous lichen morphotypes at the center and edge of the fragments. The central areas invariably had a greater diversity of morphotypes in all the fragments. The morphotypes considered highly sensitive to disturbance were not observed in edge areas, confirming a clear edge effect, as well as the influence of pesticide drift from the adjacent farmland matrix, on the structure of the lichen community. At both the edge and center sites, the larger trees (higher CBH) with less fissured bark tended to have the greatest diversity of lichen morphotypes, and more acidic barks had the greatest lichen cover. The models tested indicated that the variable tree species is an important determinant of the observed patterns of lichen morphotype richness and cover, either on its own or in association with pH or CBH + pH. The analyses also indicated that all the variables tested are important in some way for the definition of the percentage cover of the host trunks. The present study contributes to the understanding of the diversity of the corticolous lichen communities in the remaining fragments of Cerrado vegetation and the effects of the agricultural matrix on this community. The lichen may thus play a role as indicators of impact on other species, these organisms may provide important insights for the further investigation of the disturbance caused by the agricultural matrix on the communities of other groups of organisms.

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Section: Introductionmentioning

confidence: 99%

Edge Effects Reflect the Impact of the Agricultural Matrix on the Corticolous Lichens Found in Fragments of Cerrado Savanna in Central Brazil

et al. 2020

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“…The latter has since broadly promoted lichenology in the country through the Grupo Colombiano de Liquenología (GCOL; http://licbiologia.udistrital.edu. co:8080/grupo-colombiano-de-liquenologia), with a large number of thesis works at the undergraduate, master, and even doctoral level at various universities completed and in part published (Ardila-Ríos et al 2015;Díaz-Escandón et al 2015;Ramírez-Morán et al 2016;Simijaca et al 2018;Motta et al 2019). Similar examples of benefitsharing for capacity building could be given for other lichenologists in Brazil (Cáceres et al 2007;Kirika et al 2017;Menezes et al 2018), Mexico (Herrera-Campos et al 1998, Costa Rica (Umaña & Sipman 2002;Chaves et al 2004), Peru (Rivas Plata & Lumbsch 2011), Bolivia (Flakus & Printzen 2014), Kenya (Kirika et al 2017(Kirika et al , 2019, Sri Lanka (Weerakoon et al 2012, Thailand (Boonpragob et al 1998;Homchantara & Coppins 2002;Papong et al 2009;Kraichak et al 2015), among many others.…”

Section: Three Challenges To Contemporaneous Taxonomymentioning

confidence: 99%

Three challenges to contemporaneous taxonomy from a licheno-mycological perspective

Lücking

2020

Self Cite

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This paper discusses three issues that challenge contemporaneous taxonomy, with examples from the fields of mycology and lichenology, formulated as three questions: (1) What is the importance of taxonomy in contemporaneous and future science and society? (2) An increasing methodological gap in alpha taxonomy: challenge or opportunity? (3) The Nagoya Protocol: improvement or impediment to the science of taxonomy? The importance of taxonomy in society is illustrated using the example of popular field guides and digital media, a billion-dollar business, arguing that the desire to name species is an intrinsic feature of the cognitive component of nature connectedness of humans. While continuous societal support of a critical mass of taxonomists is necessary to catalogue all species on Earth, it is shown that this is a finite task, and a proposal is made how a remaining 10 million species can be catalogued within 40 years by 1,000 well-trained and dedicated taxonomists, with an investment of $4 billion, corresponding to 0.0001% of the annual global GDP or 0.005% of annual military expenditures. Notorious undercitation of actually used taxonomic resources and lack of coverage of impact metrics for monographs and other taxonomic work that cannot be published in indexed journals is discussed and suggestions are made how this problem can be remedied. An increasing methodological gap in approaches to taxonomy, between classic morphological and advanced genomic studies, affects in particular taxonomists in biodiversity-rich countries and amateurs, also regarding proper training to apply advanced methods and concepts. To counterbalance this problem, international collaborations bringing different expertise to the table and undertaking mutual capacitation are one successful remedy. Classic taxonomy still works for many groups and is a first approach to catalogue species and establish taxon hypotheses, but ultimately each taxonomic group needs to be studied with the array of methods proper to the group, including descriptive work. Finally, the Convention on Biological Diversity (CBD) and the Nagoya Protocol has put additional burden on basic biodiversity science. Using lichenology in Latin America and Brazil as an example, it is shown that the spirit of non-monetary benefit-sharing proper to taxonomy and systematics, namely capacitation, joint publications, and shared reference collections, has been increasingly implemented long before the CBD and the Nagoya Protocol, and does not need additional “policing”. Indeed, the Nagoya Protocol puts the heaviest burden on taxonomy and researchers cataloguing biodiversity, whereas for the intended target group, namely those seeking revenue gain from nature, the protocol may not actually work effectively. The notion of currently freely accessible digital sequence information (DSI) to become subject to the protocol, even after previous publication, is misguided and conflicts with the guidelines for ethical scientific conduct. Through its implementation of the Nagoya Protocol, Colombia has set a welcome precedence how to exempt taxonomic and systematic research from “access to genetic resources”, and hopefully other biodiversity-rich countries will follow this example.

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“…Several studies have revealed strong relationships among substrate features and species richness or lichen community composition, which are influenced by climatic and substrate features (Cáceres et al 2007; Rosabal et al 2013), which have effects on lichen community diversity (Wolf 1994; Boonpragob & Polyiam 2007; Zárate-Arias et al 2019). This sensitivity has allowed the use of lichens as indicators of forest continuity (McCune 2000; Rivas-Plata et al 2008; Benítez et al 2015), successional stages (Hedenås & Ericson 2000; Nordén et al 2012), and the effect of alien tree species on the richness and composition of lichens (Käffer et al 2009, 2010, 2011; Calviño-Cancela et al 2013; Ardila et al 2014; Simijaca et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Lichen Community Assemblages and Functional Traits as Indicators of Vegetation Types in Central Mexico, Based on Herbarium Specimens

Simijaca

Ocampo

Escoto-Moreno

et al. 2023

Cryptogamie, Mycologie

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Bosque de roble o plantación de coníferas, ¿qué prefieren los líquenes epífitos?

Cited by 10 publications

References 28 publications

Edge Effects Reflect the Impact of the Agricultural Matrix on the Corticolous Lichens Found in Fragments of Cerrado Savanna in Central Brazil

Edge Effects Reflect the Impact of the Agricultural Matrix on the Corticolous Lichens Found in Fragments of Cerrado Savanna in Central Brazil

Three challenges to contemporaneous taxonomy from a licheno-mycological perspective

Lichen Community Assemblages and Functional Traits as Indicators of Vegetation Types in Central Mexico, Based on Herbarium Specimens

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