Forest Research Institute

About: Forest Research Institute is a facility organization based out in Dehra Dūn, India. It is known for research contribution in the topics: Population & Forest management. The organization has 5320 authors who have published 7625 publications receiving 185876 citations.

Epiphyte biomass and nutrient capital of a moist subtropical forest in north-eastern Taiwan

Abstract: A plot of 1200 m 2 was selectedto represent the average epiphyte abundance of a moist subtropical broadleaved forest at Fushan in north-eastern Taiwan. In this plot, all epiphytes of 18 sample trees with dbh > 5 cm were removedandweighedto estimate their biomass andnutrient content. We found that the biomass of epiphytes andtheir associatedd etrital matter in this plot was 3360 kg ha −1 . The nutrient capital of the epiphytes (kg ha −1 ) was: N = 42.4, P = 1.9, Mg = 5.5, Na = 1.3, Ca = 14.5 andK = 28.9. Although the epiphytic biomass constitutedless than 2% of the total above-groundbiomass of the forest, the epi- phytes comprisedabout 21-43% of the total foliage nutrient capital of the ecosys- tem. Because nutrients containedin epiphytes andtree foliage are more read ily available to other organisms than those in woody components, epiphytes may play a greater role in ecosystem nutrient cycling than their relatively small biomass wouldsuggest.

Composition, diversity and bioactivity of culturable bacterial endophytes in mountain-cultivated ginseng in Korea.

Abstract: Plants harbor diverse communities of bacterial species in their internal compartments. Here we isolated and identified bacterial endophytes from mountain-cultivated ginseng (MCG, Panax ginseng Meyer) to make working collection of endophytes and exploit their potentially beneficial properties toward plants and human being. A total of 1,886 bacteria were isolated from root, stem and leaf of MCGs grown in 24 different sites across the nation, using culture-dependent approach. Sequencing of 16S rDNA allowed us to classify them into 252 distinct groups. Taxonomic binning of them resulted in 117 operational taxonomic units (OTUs). Analysis of diversity indices across sampling sites and tissues suggested that composition of bacterial endophyte community within ginseng could differ substantially from one site to the next as well as from one host compartment to another. Assessment of 252 bacterial isolates for their beneficial traits to host plants showed that some bacteria possesses the ability to promote plant growth and produce s-glucosidase, indicating their potential roles in plant growth promotion and bio-transformation. Taken together, our work provides not only valuable resources for utilization of bacterial endophytes in ginseng but also insights into bacterial communities inside a plant of medicinal importance.

Modelling root rot incidence in Sweden using tree, site and stand variables

Abstract: Decay and root rot caused by Heterobasidion annosum (Fr.) Bref. s. lato is the most serious disease of Norway spruce [Picea abies (L.) Karst.]. Mathematical models of disease development have recently been developed for forestry planning purposes. Functions for predicting the probability of decay were developed from two data sets, one comprising trees and another comprising stumps. From the years 1983–2001, 45,587 Norway spruce trees from the Swedish National Forest Inventory (NFI) were analysed for decay incidence at 1.3 m height and correlation with environmental conditions. The decay frequency increased in all studied regions from the first to the second half of the period for trees with comparable tree and environmental attributes. In a stepwise logistic regression, sets of functions were developed showing significance regarding stand age, site index class, temperature sum, height above sea level, diameter at 1.3 m, soil moisture and texture, proportion of spruce and eastern coordinates. The functions...