scholarly journals Assessment of JERS-1 SAR for monitoring secondary vegetation in Amazonia: II. Spatial, temporal, and radiometric considerations for operational monitoring

2002 ◽  
Vol 23 (7) ◽  
pp. 1381-1399 ◽  
Author(s):  
W. A. Salas ◽  
M. J. Ducey ◽  
E. Rignot ◽  
D. Skole
Keyword(s):  
Operational Monitoring ◽  
Secondary Vegetation

TEM Sample Prep Tool Matching—DualBeam FIB Cut Look and Measure Monitoring for Process Control and Development in a 300 mm IC Fab

2016 ◽  
Author(s):  
Jangbae Jeon
Keyword(s):  
Process Control ◽  
Sample Preparation ◽  
Continuous Improvement ◽  
Process Time ◽  
Operational Monitoring ◽  
Thickness Control ◽  
Running Time ◽  
End Products ◽  
Novel Method

Abstract This work presents a novel method of continuous improvement for faster, better and cheaper TEM sample preparation using Cut Look and Measure (CLM). The improvement of the process is executed by operational monitoring of daily beam conditions, end products, bulk thickness control, recipe usage and tool running time. This process produces a consequent decrease in rework rate and process time. In addition, it also increases throughput with better quality TEM samples.

Bacteriophage removal efficiency as a validation and operational monitoring tool for virus reduction in wastewater reclamation: Review

2017 ◽  
Vol 121 ◽  
pp. 258-269 ◽  
Author(s):  
Mohan Amarasiri ◽  
Masaaki Kitajima ◽  
Thanh H. Nguyen ◽  
Satoshi Okabe ◽  
Daisuke Sano
Keyword(s):  
Removal Efficiency ◽  
Wastewater Reclamation ◽  
Monitoring Tool ◽  
Operational Monitoring

La flore et la végétation de la partie méridionale de l'Archipel des Nouvelles Hébrides

1975 ◽  
Vol 272 (918) ◽  
pp. 329-342 ◽  
Keyword(s):  
Human Population ◽  
New Caledonia ◽  
Cloud Forest ◽  
Active Volcano ◽  
Southern Region ◽  
Vegetation Types ◽  
Mountainous Regions ◽  
Secondary Vegetation ◽  
New Hebrides ◽  
Infertile Soils

The Southern region of the New Hebrides consists of five islands of very different size, clearly separated from and with a cooler climate than the remainder of the archipelago. Only the three largest islands have been studied botanically. These islands are Aneityum and Erromanga, now sparsely populated, where there is still extensive climax vegetation on the deep, infertile soils, and Tanna, with a dense human population, where, except in mountainous regions, there is scarcely anything but secondary vegetation, on generally fertile soils that are periodically rejuvenated by ash showers from a continuously active volcano. The principal vegetation types recognized are: dense Agathis (kauri) - Calophyllum forest; cloud forest, with mosses and ferns, on ridges above 500 m altitude; low forests or thickets with Euphorbiaceae, Hibiscus or Leucaena ; open Acacia spirorbis forest; thickets of Myrtaceae and Vaccinium ; various associations more or less dominated by grasses. The flora, though relatively rich in the New Hebridean context, appears poor in comparison with that of Fiji, to which it is nevertheless fairly closely related, and even poorer in comparison with that of New Caledonia. Its wider affinities are Malaysian.

scholarly journals Towards Cost-Effective Operational Monitoring Systems for Complex Waters: Analyzing Small-Scale Coastal Processes with Optical Transmissometry

PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0170706 ◽  
Author(s):  
Marta Ramírez-Pérez ◽  
Rafael Gonçalves-Araujo ◽  
Sonja Wiegmann ◽  
Elena Torrecilla ◽  
Raul Bardaji ◽  
...  
Keyword(s):  
Cost Effective ◽  
Small Scale ◽  
Monitoring Systems ◽  
Coastal Processes ◽  
Operational Monitoring

scholarly journals Análisis florístico de la vegetación secundaria derivada de la selva húmeda de montaña de Santa Cruz Tepetotutla (Oaxaca) México

2017 ◽  
pp. 89
Author(s):  
Marco Antonio Romero-Romero ◽  
Silvia Castillo ◽  
Jorge Meave ◽  
Hans Van der Wal
Keyword(s):  
Life Forms ◽  
Stand Age ◽  
Considerable Proportion ◽  
Santa Cruz ◽  
Montane Rain Forest ◽  
Secondary Vegetation ◽  
Forest Region ◽  
Tree Ferns ◽  
Second Growth ◽  
Productive Systems

A floristic analysis war conducted of the secondary vegetation derived from slash and burn agriculture in a montane rain forest region at Santa Cruz Tepetotutla, located in the Northern Oaxaca Range, Mexico. The analysis of the studied chronosequence is based on a collection of 2 668 specimens encountered in 60 parallel 0.01 ha belt transects (25 X 4 m), distributed in 18 second-growth stands with ages ranging between 5 and ca. 100 years. A total of 499 species were distinguished, which are distributed in 223 genera and 104 families (including 38 secondary vegetation species collected outside of the transects), among which the following growth forms are represented: trees, shrubs, herbs, herbaceous and woody climbers, palms, ferns, and epiphytes. Only 28 morphospecies were not determined to any taxonomic level. Floristic richness did not decrease nor increased significantly with stand age. In contrast, changing trends, albeit non significant, were observed for different life forms, as arboreal species gradually replaced herbaceous ones, whereas palms and tree ferns only appeared in stands of intermediate age and their abundances increased thereof. The results of this study suggest that a considerable proportion of the regional floristic diversity occurs in the secondary vegetation. The abandonment of traditional agricultural methods for modern but usually inadequate, productive systems threatens this floristic potential, because it affects characteristics of the system fundamental for the maintenance of species, such as stand age and the area of the primary vegetation matrix in which these stands are embedded.

scholarly journals Spatial-temporal evolution of landscape degradation on the Guamá River Basin, Brazil

2021 ◽  
Vol 56 (3) ◽  
pp. 480-490
Author(s):  
Tatiane Camila Martins Silva ◽  
Ima Célia Guimarães Vieira ◽  
Marcelo Cordeiro Thalês
Keyword(s):  
Land Use ◽  
River Basin ◽  
Satellite Monitoring ◽  
Primary Forest ◽  
Amazon Forest ◽  
Livestock Farming ◽  
Map Algebra ◽  
Forest Protection ◽  
Landscape Degradation ◽  
Secondary Vegetation

The goal of this study was to determine the anthropization evolution of the Guamá river basin in the years 2000, 2008 and 2018 by means of the Anthropic Transformation Index. Land use and cover maps were obtained from two databases, Project Mapbiomas (Brazilian Annual Land Use and Land Cover Mapping Project) and PRODES (Project for the Satellite Monitoring of the Brazilian Amazon Forest). The main classes defined in the mapping process are: forest, natural non-forest vegetation, agriculture and livestock farming, secondary vegetation, urban infrastructure, water and others. Secondary vegetation was considered as the area where the forest classes of Mapbiomas intersects with the deforested areas of PRODES, as determined by the map algebra operator. The expansion of agriculture and livestock farming achieved an increase of about 10%, while the forest was reduced in almost 10%. The Guamá river basin obtained an Anthropic Transformation Index of 4.44 in 2000, 5.04 in 2008 and 5.09 in 2018, going from a regular to a degraded state in 18 years. The occupation process caused major alterations in the natural components of the landscape over the course of 18 years, notably in the amount of forest. Protection of 35% of the remnant primary forest in the Guamá river basin is vital for the conservation of water resources vulnerable to changes in land use.

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