Cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia

Déleg, Jorge; Gradstein, S. Robbert; Aragón, Gregorio; Giordani, Paolo; Benítez, Ángel

doi:10.1016/j.ecolind.2021.107890

Cited by 12 publications

(5 citation statements)

References 61 publications

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“…Bryophytes represent a very diverse group of non‐vascular plants such as mosses, liverworts and hornworts and form a major component of terrestrial ecosystems, including forests, grasslands, deserts, tundra, plateaus, and taiga (Vuorinen et al, 2017; Boch et al, 2018; Kou et al, 2020; Deleg et al, 2021). They also play key roles in tracing the evolution of important characteristics associated with the terrestrialization process (Su et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Phylogeny and divergence time estimation of the genus Didymodon (Pottiaceae) based on nuclear and chloroplast markers

Zhang

Feng

Kou

et al. 2022

J of Sytematics Evolution

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Didymodon Hedw., with approximately 140 species in the family Pottiaceae, is distributed nearly throughout the world, with the greatest diversity and important ecological functions in drought lands and alpine ecosystems. Several studies involving morphology, molecular systematics, and macro‐systematic analysis have addressed the infrageneric classification of Didymodon, but controversy over the position of the infrageneric and species classification remains due to its high degree of morphological variation in micro‐habitats and strong sensitivity to climate change at regional and global scale. To date, only a few phylogenetic studies have been conducted with an incomplete number of Didymodon species; further, there is no study published regarding the divergence time of Didymodon. Consequently, we conducted a comprehensive phylogenetic analysis of Didymodon species, sampling a total of 107 species, based on one nuclear (ITS) and five chloroplast DNA. Moreover, divergence time analysis was conducted to infer the age of origin and divergence of Didymodon species. Our results presented the largest scale phylogenetic relationship of Didymodon to date and resolved the phylogenetic status of some controversial taxa and the new species. The divergence time estimation showed that Didymodon species originated around the early Cretaceous, and the diversification was concentrated in the Cretaceous and Eocene. Paleoclimate and environmental change have a direct impact on the origin and divergence of Didymodon species by shaping their morphology, resource availability and ecological niche. Our study will help understand species origin and speciation of Didymodon as well as reflecting species adaptability and experience to historical events.

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Section: Introductionmentioning

confidence: 99%

Phylogeny and divergence time estimation of the genus Didymodon (Pottiaceae) based on nuclear and chloroplast markers

Zhang

Feng

Kou

et al. 2022

J of Sytematics Evolution

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“…Maintenance systems and predictive systems should be designed through technology. Legal action should be taken against the builders of these flats (Déleg et al, 2021)…”

Section: High Hazard Zonementioning

confidence: 99%

Utilizing Geographic Information Systems to Zone Landslide-Prone Areas for Urban Development in the Kandy Municipal Region, Sri Lanka

Nagamuthu,

Rajhananthiny Jeyaluxman,

Raveendran Selvarajah

2024

jag

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This investigation aims to delineate areas susceptible to landslides based on the current state of development in the Kandy Municipal Council Areas. Unplanned urbanization is taking place in many areas of Kandy city including landslide-vulnerable areas. Landslide vulnerability constraints the sustainable development of the city because city planning and management authorities do not have spatial information to guide the development. This inquiry employs the sophisticated Geographic Information System methodology, leveraging the formidable capabilities of Geospatial Information Technology. To accomplish this objective, various parameters including terrain, soil composition, drainage patterns, precipitation distribution, road infrastructure, and building locations have been meticulously analysed and integrated through a process of superimposition using weighted overlay techniques in GIS. Consequently, by overlaying the socio-economic development data with the identified zones of landslide susceptibility, a comprehensive depiction of areas prone to landslides, and the associated risks faced by roads and structures, has been developed. The findings of this study indicate that approximately 35% of the areas are classified as high-hazard zones, while approximately half fall under the medium-hazard category. The remaining areas are identified as low-hazard zones. The outcomes of this investigation are expected to provide invaluable support to urban planners and policymakers, facilitating informed decision-making in the domain of urban development.

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“…For the sampling of non-vascular epiphytes, three strata were established: base (between 0.5-1 m), trunk (between 1-2 m) and branches (branches were collected from the upper parts) (Gradstein et al, 2003). In each stratum, a 30 x 20 cm 2 quadrant (divided into 1 cm 2 cells) was placed and the coverage of each non-vascular species was estimated (Déleg et al, 2021). One specimen of each species was deposited in the TULV Herbarium.…”

Section: Samplingmentioning

confidence: 99%

Diversity patterns of vascular and non-vascular epiphytes along tropical dry forest

Soto,

Montoya,

Castaño

et al. 2023

Rev. Biol. Trop.

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Introduction: Epiphytes (vascular and non-vascular) are one of the most diverse groups in the Neotropics, but despite their importance in the functioning of many ecosystems, much of their taxonomy and ecology is still unknown in the dry forest of Colombia. Objective: To compare the diversity patterns and species composition of vascular and non-vascular epiphytes along tropical dry forest remnants of Cauca Valley, Colombia. Methods: Ten permanent plots (50 x 20 m 2 ) were established in tropical dry forest remnants. The epiphytes were sampled in 40-50 trees per plot. Alpha and gamma diversity were calculated using the richness (q0) and Shannon index (q1) (alpha was estimated as the average for phorophytes). Beta diversity was measured using the Whitaker index. To evaluate the relationship between diversities and environmental variables, GLM analysis was used. Results: We found 50 morphospecies of vascular epiphytes, 77 of bryophytes and 290 of lichens. The 𝛼 and 𝛾 diversity of bryophytes from each remnant was significantly explained by temperature. The abundance of lichens per tree was significantly related with the DBH and tree height of each remnant. The 𝛼 diversity of vascular epiphytes shown can be explained by temperature and precipitation. The 𝛾 diversity was strongly influenced by the beta diversity in bryophytes and lichens. This pattern is because the sites with high disturbance present a lower diversity, as a consequence of a homogenizing effect, that is, a low turnover of species between sampling units. Conclusions: Precipitation and temperature affected the diversity of bryophytes and vascular epiphytes, while it did not show a relationship with the lichen's diversity, for which there is not a high congruence between the diversity and composition of these epiphytes.

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Cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia

Cited by 12 publications

References 61 publications

Phylogeny and divergence time estimation of the genus Didymodon (Pottiaceae) based on nuclear and chloroplast markers

Phylogeny and divergence time estimation of the genus Didymodon (Pottiaceae) based on nuclear and chloroplast markers

Utilizing Geographic Information Systems to Zone Landslide-Prone Areas for Urban Development in the Kandy Municipal Region, Sri Lanka

Diversity patterns of vascular and non-vascular epiphytes along tropical dry forest

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