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Green Synthesis of Nanomaterials

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ISBN: 9783039217861 9783039217878 Year: Pages: 224 DOI: 10.3390/books978-3-03921-787-8 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Microbiology
Added to DOAB on : 2019-12-09 16:10:12
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Nanomaterials possess astonishing physical and chemical properties. They play a key role in the development of novel and effective drugs, catalysts, sensors, and pesticides, to cite just a few examples. Notably, the synthesis of nanomaterials is usually achieved with chemical and physical methods needing the use of extremely toxic chemicals or high-energy inputs. To move towards more eco-friendly processes, researchers have recently focused on so-called “green synthesis”, where microbial, animal-, and plant-borne compounds can be used as cheap reducing and stabilizing agents to fabricate nanomaterials. Green synthesis routes are cheap, environmentally sustainable, and can lead to the fabrication of nano-objects with controlled sizes and shapes—two key features determining their bioactivity.

Protection Strategy against Spruce Budworm

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ISBN: 9783039280964 9783039280971 Year: Pages: 220 DOI: 10.3390/books978-3-03928-097-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Forestry --- Biology --- Science (General)
Added to DOAB on : 2020-01-30 16:39:46
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Spruce budworm (Choristoneura fumiferana (Clem.)) outbreaks are a dominant natural disturbance in the forests of Canada and northeastern USA. Widespread, severe defoliation by this native insect results in large-scale mortality and growth reductions of spruce (Picea sp.) and balsam fir (Abies balsamea (L.) Mill.) forests, and largely determines future age–class structure and productivity. The last major spruce budworm outbreak defoliated over 58 million hectares in the 1970s–1980s, and caused 32–43 million m3/year of timber volume losses from 1978 to 1987, in Canada. Management to deal with spruce budworm outbreaks has emphasized forest protection, spraying registered insecticides to prevent defoliation and keep trees alive. Other tactics can include salvage harvesting, altering harvest schedules to remove the most susceptible stands, or reducing future susceptibility by planting or thinning. Chemical insecticides are no longer used, and protection strategies use biological insecticides Bacillus thuringiensis (B.t.) or tebufenozide, a specific insect growth regulator. Over the last five years, a $30 million research project has tested another possible management tactic, termed an ‘early intervention strategy’, aimed at area-wide management of spruce budworm populations. This includes intensive monitoring to detect ‘hot spots’ of rising budworm populations before defoliation occurs, targeted insecticide treatment to prevent spread, and detailed research into target and non-target insect effects. The objective of this Special Issue is to compile the most recent research on protection strategies against spruce budworm. A series of papers will describe results and prospects for the use of an early intervention strategy in spruce budworm and other insect management.

Keywords

forest pests --- defoliation --- spruce budworm --- multi-spectral remote sensing --- Acadian region --- Maine --- Quebec --- Choristoneura fumiferana --- Abies balsamea --- hardwood content --- defoliation prediction --- Choristoneura fumiferana --- annual defoliation --- spatial autocorrelation --- spatial-temporal patterns --- mixed effect models --- intertree variance --- insect population management --- spruce budworm --- early intervention --- defoliation --- economic losses --- decision support system --- optimized treatment design --- insect population management --- spruce budworm --- early intervention --- defoliation --- economic losses --- decision support system --- computable general equilibrium model --- Pinaceae --- endophytic fungi --- plant tolerance --- Phialocephala scopiformis --- Picea glauca --- spruce budworm --- phenology --- insect susceptibility --- spruce budworm --- forest protection --- early intervention strategy --- egg recruitment --- apparent fecundity --- growth rate --- spruce budworm --- Choristoneura fumiferana --- forest protection --- early intervention strategy --- survival --- apparent fecundity --- immigration --- growth rate --- treatment threshold --- insecticides --- spruce budworm --- moth --- tortricidae --- Choristoneura fumiferana (Clemens) --- forest protection --- early intervention strategy --- pheromone mating disruption --- migration --- dispersal --- spruce budworm --- Choristoneura fumiferana --- moth --- Lepidoptera --- forest protection --- early intervention strategy --- migration --- simulation --- aerobiology --- moths --- migration --- forest protection --- spruce budworm --- Choristoneura fumiferana (Clem.) --- early intervention strategy --- modelling --- circadian rhythm --- foliage protection --- population control --- monitoring --- area-wide management --- science communication --- economic and ecological cost: benefit analyses --- early intervention strategy --- foliage protection --- defoliation --- monitoring --- insecticide application

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