Bibliografías temáticas / Defoliation Measurement

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Literatura académica sobre el tema "Defoliation Measurement"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 11 de febrero de 2022

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Artículos de revistas sobre el tema "Defoliation Measurement"

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Hunt, Thomas E., Fikru J. Haile, W. Wyatt Hoback, and Leon G. Higley. "Indirect Measurement of Insect Defoliation." Environmental Entomology 28, no. 6 (December 1, 1999): 1136–39. http://dx.doi.org/10.1093/ee/28.6.1136.

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Taylor, Sarah L., and David A. MacLean. "Validation of Spruce Budworm Outbreak History Developed from Aerial Sketch Mapping of Defoliation in New Brunswick." Northern Journal of Applied Forestry 25, no. 3 (September 1, 2008): 139–45. http://dx.doi.org/10.1093/njaf/25.3.139.

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Abstract Aerial sketch mapping (ASM) of annual defoliation provides a means to quantify spruce budworm (Choristoneura fumiferana Clem.) outbreak histories, but accuracy is affected by factors such as navigation and weather conditions. We used ground-based defoliation estimates from 123 permanent sample plots (PSP) in New Brunswick and increment core growth data from a subset of PSPs, to validate ASM estimates of defoliation. From 1985 to 1993, 85% of 332 cases were correctly classified by aerial estimates as nil–light (0–30%) or moderate–severe (31–100%), with the proportion correct varying by
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Zeide, Boris, and Lynne C. Thompson. "Impact of Spring Sawfly Defoliation on Growth of Loblolly Pine Stands." Southern Journal of Applied Forestry 29, no. 1 (February 1, 2005): 33–39. http://dx.doi.org/10.1093/sjaf/29.1.33.

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Abstract To estimate the impact of a single spring defoliation by loblolly pine sawfly (Neodiprion taedae linearis Ross), diameters of 3,006 loblolly pines from five locations in southeastern Arkansas were measured immediately after defoliation and two more times at 1-year intervals.The proportion of defoliation was assessed at each measurement. An insecticide was used in an attempt to prevent defoliation in subsequent years. Because tree growth depends on many factors, a multivariate multiple regression model was used to separate these effects. The model predicts thata single defoliation redu
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Rast, Everette D., and Robert L. Brisbin. "Six-Year Effects of Two Late Spring Frosts on Appalachian Hardwoods." Northern Journal of Applied Forestry 4, no. 1 (March 1, 1987): 26–28. http://dx.doi.org/10.1093/njaf/4.1.26.

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Abstract Severe late spring frosts can kill new shoots and leaves on commercial tree species at higher elevations. A previous short-term study has shown that the resulting defoliation and dieback does not seriously affect the radial growth or mortality of most species except American beech. In this study we found that defoliation, dieback, and radial growth increment were related to species and crown class. The radial growth increment of American beech was reduced to 70% of the previous 6-yr growth during the first year after the frost. The annual growth then increased consistently over the me
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Nowakowska, Justyna Anna, Marcin Stocki, Natalia Stocka, Sławomir Ślusarski, Miłosz Tkaczyk, João Maria Caetano, Mirela Tulik, Tom Hsiang, and Tomasz Oszako. "Interactions between Phytophthora cactorum, Armillaria gallica and Betula pendula Roth. Seedlings Subjected to Defoliation." Forests 11, no. 10 (October 19, 2020): 1107. http://dx.doi.org/10.3390/f11101107.

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The purpose of this study was to better understand the interactive impact of two soil-borne pathogens, Phytophthora cactorum and Armillaria gallica, on seedlings of silver birch (Betula pendula Roth.) subjected to stress caused by mechanical defoliation, simulating primary insect feeding. This is the first experimental confirmation of silver birch seedling root damage (and in consequence shoot mortality) caused by the additive effect of defoliation stress and P. cactorum inoculation via soil. However, the most severe damage to roots occurred after A. gallica inoculation. One year after treatme
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Buonaccorsi, John P. "Prediction in the Presence of Measurement Error: General Discussion and an Example Predicting Defoliation." Biometrics 51, no. 4 (December 1995): 1562. http://dx.doi.org/10.2307/2533288.

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MacKinnon, Wayne E., and David A. MacLean. "Effects of surrounding forest and site conditions on growth reduction of balsam fir and spruce caused by spruce budworm defoliation." Canadian Journal of Forest Research 34, no. 11 (November 1, 2004): 2351–62. http://dx.doi.org/10.1139/x04-115.

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The species composition of surrounding forest and site characteristics have been postulated to influence growth loss caused by eastern spruce budworm (Choristoneura fumiferana Clem.) defoliation. Forty spruce (Picea spp.) and balsam fir (Abies balsamea (L.) Mill.) stands located in north-central New Brunswick, Canada, were measured for defoliation and tree growth and used to determine the effects of surrounding forest (softwood, mixedwood), site (wet soil – nutrient poor; moist soil – nutrient rich), and species group (balsam fir, spruce) on growth reduction caused by spruce budworm. Stem anal
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Johnson, Lee F., and Lars L. Pierce. "Indirect Measurement of Leaf Area Index in California North Coast Vineyards." HortScience 39, no. 2 (April 2004): 236–38. http://dx.doi.org/10.21273/hortsci.39.2.236.

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The performance of the LI-COR LAI-2000 Plant Canopy Analyzer (PCA) for indirect measurement of leaf area index (LAI) was evaluated in vineyards of California's North Coast region. Twelve plots were established, representing vineyards of differing trellis, cultivar, and planting density. Mean LAI ranged from 0.5- to 2.25-m2 leaf area per m2 ground area by direct measurement (defoliation). Indirect LAI derived by a standard two-azimuth, diagonal-transect measurement protocol was significantly related to direct LAI (r2 = 0.78, P ≤ 0.001). However, the PCA underestimated direct LAI by about a fact
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Pethybridge, Sarah J., Frank Hay, Paul Esker, Calum Wilson, and Forrest W. Nutter. "Use of a Multispectral Radiometer for Noninvasive Assessments of Foliar Disease Caused by Ray Blight in Pyrethrum." Plant Disease 91, no. 11 (November 2007): 1397–406. http://dx.doi.org/10.1094/pdis-91-11-1397.

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Foliar disease due to ray blight (Phoma ligulicola) in pyrethrum was quantified at three locations over 2 years in Tasmania, Australia. To obtain a range of ray blight disease intensities, replicated plots were treated with fungicides that varied in efficacy to control ray blight. Visual disease assessments and measurement of canopy reflectance were made at least once during spring (September through December). Visual assessments involved removal of flowering stems at ground level from which measurements of defoliation severity and the incidence of stems with ray blight were obtained. Reflecta
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Varago, André Luiz, Idemir Citadin, Marcos Robson Sachet, Gener Augusto Penso, and Maria do Carmo Bassols Raseira. "Heritability of peach tree resistance to bacterial leaf spot." Pesquisa Agropecuária Brasileira 52, no. 5 (May 2017): 366–69. http://dx.doi.org/10.1590/s0100-204x2017000500010.

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Abstract: The objective of this work was to evaluate the broad-sense heritability reaction to bacterial leaf spot (Xanthomonas arboricola pv. pruni), in peach tree populations obtained from directed crosses. Disease severity and defoliation of the genotypes were evaluated in field conditions, with posterior measurement of the healthy leaf area duration (HAD). The observed average heritability (0.51) indicates that the use of the evaluated genitors can be effective for the development of cultivars with higher resistance to the disease.
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Tesis sobre el tema "Defoliation Measurement"

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Perkowski, Matthew Paul. "An analysis of the gypsy moth event monitor modified forest vegetation simulator and the stand damage model using empirical long-term measurement plot data from the Appalachian hardwood and the Atlantic Coastal Plain mixed pine-hardwood regions." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5856.

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Thesis (M.S.)--West Virginia University, 2008.<br>Title from document title page. Document formatted into pages; contains ix, 103 p. : ill. (some col.), col. maps. Includes abstract. Includes bibliographical references (p. 77-79).
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Capítulos de libros sobre el tema "Defoliation Measurement"

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Ghosh, Swagata, Krishna Vidhata N., Sunil Kumar, and Kousik Midya. "Seasonal Contrast of Land Surface Temperature in Faridabad." In Methods and Applications of Geospatial Technology in Sustainable Urbanism, 217–50. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-2249-3.ch008.

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The chapter has highlighted the adverse impact of conversion of natural land cover into urban concrete over inter-seasonal variation of land surface temperature (LST) in Faridabad district which is a major threat for sustainable urbanism. Apart from high LST in the dense urban area built-up in Faridabad city, inter-seasonal variation of LST has been observed in dry deciduous forested areas due to defoliation, fallow land, and over-grazed land in rural surrounding areas. Compared to NDVI, NDBI has significant positive and stable correlation with LST in all seasons (Pearson index: 0.35 to 0.60). Weaker correlation (Pearson index: 0.02 to 0.48) between NDVI and LST accounts for the seasonal impact over NDVI due to defoliation and agricultural practices over the study area. Overall, it can be remarked that image-based spectral indices and thermal band can be used for the evaluating thermal environmental contrast across seasons. Use of in situ measurement with good network of meteorological stations can validate satellite-derived LST better and increase the accuracy of the study.
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Actas de conferencias sobre el tema "Defoliation Measurement"

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Šerevičienė, Vaida, Vaida Vasiliauskienė, Dainius Paliulis, and Jurgita Aleknaitė. "Integrated Evaluation of Road Transport Pollution Impact on the Urban Air." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.048.

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With the number of vehicles increasing, the analysis of urban air pollution becomes expedient. This article deals with the integrated evaluation of road transport realised pollutant impact on the urban air. During research, it was carried out complex measurements of the air quality involving passive diffusive sampling for nitrogen dioxide, active measurement for particle matters, lichen sampling for heavy metals and visual assessment of trees defoliation. Obtained results showed the statistically reliable (p &amp;lt; 0.05) strong correlation (r = 0.83) between the number of passing vehicles an
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STRAUPE, Inga, and Līga LIEPA. "AN ASSESSMENT OF RETENTION TREES IN HYLOCOMIOSA FOREST TYPE IN SOUTHERN LATVIA." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.111.

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In Latvia the forest legislation requires that at least five living trees must be retained per hectare after clear-cutting. It is known that retention trees significantly increase the biodiversity in production forest landscape. After clear-cutting retention trees function as habitats for various lichens, mosses, insects, fungi and birds. Over time retention trees are incorporated into the young forests stand and provide presence of old trees, which is necessary for many endangered and rare species. After the death, these trees turn into coarse woody debris which is an essential habitat and fe
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