Biology Agriculture Aquaculture Horticulture Postharvest Forestry Geography Environment Health





Forestry

Historical Patterns of Natural Forest Management in Costa Rica: The Good, the Bad and the Ugly
submitted by menaa112 7 hours ago - Topic: Forestry
We present an in-depth analysis of natural forest management practices in Costa Rica based on a new historical forestry GIS database encompassing five conservation regions in the country where selective logging has been prevalent for the last 18 years. Natural forest management refers to the selective logging practices for the production of timber in natural forest ecosystems. The study conside...



Effects of plant growth regulators, carbon sources and pH values on callus induction in Aquilaria malaccensis leaf explants and characteristics of the resultant calli
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
The endangered tropical tree, Aquilaria malaccensis, produces agarwood for use in fragrance and medicines. Efforts are currently underway to produce valuable agarwood compoundsn tissue culture. The purpose of this study was to develop an optimal growth medium, specifically, the best hormone combination for callus suspension culture. Using nursery-grown A. malaccensis, sterilized leaf explants w...

An integrated method for matching forest machinery and a weight-value adjustment
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
Proper matching of forestry machinery is important when raising mechanization levels for forestry production. In the matching process, forestry machinery needs not only expertise, but also improved methods for solving problems. I propose combination of case-based reasoning (CBR) and rule-based reasoning (RBR) by calculating the similarity of quantitative parameters of various forestry machines ...

Participatory forest management in Burkina Faso: Members’ perception of performance
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
This study examines variations in the performance of participatory forest management programs among four forest management groups (FMGs) in southern Burkina Faso, and assesses the factors that influence their members’ perceptions of performance through a household survey of 216 members. Variations in performance scores among the FMGs were analyzed through multivariate analysis of variance whi...

Purification of four strains of endophytic fungi from Astragalus and their optimized liquid fermentations
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
This study was designed to isolate endophytic fungi from A. mongholicus (growing in northeast China) to determine whether they can produce bioactive metabolites. Four strains of endophytic fungi (strains 16, 17, 23 and 75) were successfully isolated from A. mongholicus using the surface disinfection method. According to ITS-rDNA sequences analysis, strains 16 and 75 were identified as Fusarium ...



Finite element analysis of stress and strain distributions in mortise and loose tenon furniture joints
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
We studied the effect of loose tenon dimensions on stress and strain distributions in T-shaped mortise and loose tenon (M&LT) furniture joints under uniaxial bending loads, and determined the effects of loose tenon length (30, 45, 60, and 90 mm) and loose tenon thickness (6 and 8 mm) on bending moment capacity of M&LT joints constructed with polyvinyl acetate (PVAc) adhesive. Stress and...

Genetic variation and selection of introduced provenances of Siberian Pine (Pinus sibirica) in frigid regions of the Greater Xing’an Range, Northeast China
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
Siberian Pine (Pinus sibirica) is an ecologically and economically important species in pristine forests throughout northern Russia. Four provenances of P. sibirica were introduced from Mongolia and Russia to the Greater Xing’an Range (the Daxing’anling), northeast China in 1993. The aim of this research was to study genetic variation and selection of the introduced four Pinus sibirica prov...


Litter production, decomposition and nutrient mineralization dynamics of Ochlandra setigera: A rare bamboo species of Nilgiri Biosphere Reserve, India
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
Litter production, decomposition and nutrient release dynamics of Ochlandra setigera, a rare endemic bamboo species of Nilgiri biosphere were studied during 2011–2012 using the standard litter bag technique. Annual litter production was 1.981 t·ha−1 and was continuous throughout the year with monthly variations. Litterfall followed a triphasic pattern with two major peaks in November, 2011...

Propagation behavior of acoustic wave in wood
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
We used acoustic tests on a quarter-sawn poplar timbers to study the effects of wood anisotropy and cavity defects on acoustic wave velocity and travel path, and we investigated acoustic wave propagation behavior in wood. The timber specimens were first tested in unmodified condition and then tested after introduction of cavity defects of varying sizes to quantify the transmitting time of acous...


Bioinventory and documentation of traditional ecological knowledge of wild edible fruits of Kodagu-Western Ghats, India
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
Forty-five species of wild edible fruits were identified and traditional local knowledge of their usage was recorded in 40 villages of Kodagu district in Central Western Ghats, India one of the eight top hotspots of biodiversity in the world. We combined biodiversity inventory of trees with village interviews to record traditional ecological knowledge. Wild edible fruits were an opportunistic s...

Scientific analysis of indigenous techniques for guggal (Commiphora wightii) tapping in India
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
Guggal, a threatened species that is endemic to western India, is tapped to extract medicinally important oleo-gum-resin (guggul). However, the plant dies after gum exudation. The indigenous tapping techniques used by local people were examined in Gujarat, India to discover the scientific basis behind these techniques: selection of gum inducer, season of tapping, and plant parts to be tapped. F...


Dependences of longleaf pine (Pinus palustris) natural reproduction on environments above ground
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
We studied relations between natural seedling reproduction and above ground environment in a longleaf pine ecosystem. Forty-eight 0.05 ha circular plots were sampled under single-tree selection, grouptree selection and control stands in three main longleaf pine areas in south Alabama, USA. We measured six above-ground environment factors, viz. canopy closure, stand density, basal area, average ...

Temporal changes in nitrogen acquisition of Japanese black pine (Pinus thunbergii) associated with black locust (Robinia pseudoacacia)
submitted by forilolefeyoh 9 hours ago - Topic: Forestry
The alien woody legume, black locust (Robinia pseudoacacia), has invaded Japanese black pine (Pinus thunbergii) forests located in Japan’s coastal plain and hill regions where gaps are formed in pine forests after nematode infestation. Nitrogen fixation by legumes accelerates N cycling in forest ecosystems. We studied temporal change in the annual tree-ring resolution N stable isotope composi...

Post-Doc position at the Max Planck Institute for Biogeochemistry
submitted by wmotlock 13 hours ago - Topic: Forestry
Jena, Germany We are seeking a highly-motivated and collaborative Post-Doc with a PhD in environmental and quantitative/computational sciences (e.g. geo-ecology, environmental science, biogeochemistry, biology, applied mathematics, physics, or computer science). The objective of the PostDoc project is to gain further understanding on the role and interaction of water/nutrient (N and P) availabi...

Development of microsatellites for the cacao frosty pod rot pathogen, Moniliophthora roreri
submitted by babmellir2059 13 hours ago - Topic: Forestry
Moniliophithora roreri, causal agent of cacao frosty pod rot, is considered one of the most devastating pathogens of this crop. In this study, we report the development of and validation of 28 microsatellite loci from an enriched library. From these, ten loci were demonstrated to be polymorphic in an Ecuadorian population composed of 27 isolates. The mean number of alleles per locus was 3.2, an...