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Functional diversity in an Andean subparamo affected by wildfire in Colombia

Plant Diversity 2023年第4期45卷 385-396页

作者： Korina Ocampo-Zuleta Angela Parrado-Rosselli Instituto de Ciencias Ambientales y Evolutivas.Facultad de Ciencias.Universidad Austral de Chile.Campus Isla Teja 5090000 ValdiviaChile Programa de Doctorado en Ciencias Mencion Ecología y Evolucion Escuela de GraduadosFacultad de CienciasUniversidad Austral de ChileValdiviaChile Jardín Botanico de Bogota Jose Celestino Mutis Subdireccion CientíficaLínea de Investigacion en Restauracion Ecologica111071BogotaColombia Facultad del Medio Ambiente y Recursos Naturales Universidad Distrital Francisco Jose de CaldasSede Vivero111711BogotaColombia

Recently,the Andean subparamo in Colombia has experienced severe wildfires,but little is known about the functional composition of recovering or not after a wildfire.Therefore,we examined the functional community composition subparamo affected byfire in 2016.We documented how functional traits changed 31 months after the disturbance and compared them with an unburned site.We sampled from one to two years after the fire every four months,then registered all recruits in 1655m plots.New individuals were classified into strategy functional groups based on the traits of persistence and dispersal.The first group was stem type and regeneration mechanism(seedling and resprout),and the second was fruit type and dispersal mode.We investigated the degree to which functional diversity changes plant communities over time(woody and non-woody),and we compared it with an unburned site.The most relevant results showed that resprouts and seed regenerated increased post-fire time and significant differences between sampling periods.The anemochory is the most relevant dispersal mode that indicates the community capacity to colonize the new gaps opened by the fire rapidly.We discuss how wildfire appears to be a triggering factor for persistence and dispersal strategy groups in subparamo burned given their characteristics of tolerance to stress.For this reason,a greater functional divergence between the ecosystems studied post-fire recovery has been related to higher levels of biodiversity at the landscape scale due to the high degree of endemism and significant differences in species composition between paramos.

关键词： Subparamo Cerro aguanoso dispersal mode Functional traits Postfire regeneration

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Impact of patch size on woody tree species richness and abundance in a tropical montane evergreen forest patches of south India

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Journal of Forestry Research 2018年第6期29卷 1675-1687页

作者： Dharmalingam Mohandass Mason J.Campbell Priya Davidar Root and Soil Biology Laboratory Department of BotanyBharathiar UniversityCoimbatoreTaminadu 641046India Centre for Tropical Environmental and Sustainability Science(T.E.S.S.) College of Science and EngineeringJames Cook UniversityCairnsQLD 4870Australia Department of Ecology and Environmental Sciences Pondicherry UniversityKalapetPondicherry 605014India

We examined the effects of forest patch size on woody tree species richness and abundance in tropical montane evergreen forest patches of the Nilgiri region,south India. We sampled woody trees(>1 cm dbh) from 21 forest patches in the upper Nilgiri hills(> 2000 m elevation) and recorded a total of 35,146 individuals of 61 species, 45 genera and 30 families. Species richness and abundance of sapling/shrubs(≥ 1 to dispersal patterns.Differential responses in these traits by the plant community within the individual habitat zones of forest edge and interiors likely plays a major role in determining the inherent plant community and thus the subsequent ecological processes of forest patches, including their responses to increasing patch area.

关键词： dispersal mode Forest fragments Shade-tolerance Species–area relationships Western Ghats

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Liana community and functional trait analysis in tropical dry evergreen forest of India

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Journal of Plant Ecology 2015年第5期8卷 501-512页

作者： Pandi Vivek Narayanaswamy Parthasarathy Department of Ecology and Environmental Sciences Pondicherry UniversityPuducherry 605014India

Aim lianas are abundant and diverse throughout the world and consti-tute an important structural and functional component of tropical forests.This study aims to investigate liana diversity,abundance and their functional traits in Indian tropical dry evergreen forest(TDEF).Methods a total of ten 1-ha plots,one each in 10 Indian TDEF sites were demarcated.Each 1-ha plot was divided into one-hundred 10-×10-m quadrats to facilitate woody species inventory.all lianas≥1 cm diameter measured at 130 cm from the rooting point and all trees≥10-cm girth at breast height(gbh)were recorded from the study sites to analyze the patterns of liana diversity and abundance and also to compare the contribution of lianas to the total woody species richness,density and basal area.liana variables across the study sites were compared using one-way analysis of variance.The qualitative functional traits of inventoried lianas and trees were assessed on the field and referring to pertinent field manuals.Important Findingsa total of 9237 liana individuals(ranged from 408-1658 individu-als ha^(−1))representing 52 species,45 genera and 28 families were encountered from the 10 study sites.liana species richness ranged from 11-31 species ha^(−1) in 10 sites,which averaged 23.4(±5.7)species ha^(−1).The total basal area of lianas in the study sites was 7.3 m^(2)(0.20-1.76 m^(2) ha^(−1)).There was a significant variation in liana species richness,density and basal area across the studied sites.on the whole,lianas contributed 52%,49.3%and 4.1%to the total woody species(lianas and trees)richness,density and basal area,respectively.liana trait analysis revealed the majority(50%)of lianas belonged to brevi-deciduous type.stem twining was the chief climbing mechanism,exhibited by 21 species(52.6%of total abundance).more than half of the liana species(34 species;6925 individuals)had microphyllous leaves.Fleshy-fruited lianas mostly bearing berries and drupes constituted the major fruit type in the studied sites.Zoochory was the predominant dispersal mode

关键词： climbing mechanism dispersal mode functional traits liana diversity tropical dry evergreen forest

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