scholarly journals Reproductive Role of Infrared Radiation Sensors of Melanophila acuminata (Coleoptera: Buprestidae) at Forest Fires

2010 ◽  
Vol 103 (6) ◽  
pp. 823-826 ◽  
Author(s):  
W. G. Evans
Keyword(s):  
Forest Fires ◽  
Infrared Radiation ◽  
Melanophila Acuminata ◽  
Radiation Sensors

Perception of Infrared Radiation from Forest Fires by Melanophila Acuminata de Geer (Buprestidae, Coleoptera)

Ecology ◽  
1966 ◽  
Vol 47 (6) ◽  
pp. 1061-1065 ◽  
Author(s):  
William G. Evans
Keyword(s):  
Forest Fires ◽  
Infrared Radiation ◽  
Melanophila Acuminata

THE INFRARED RECEPTIVE FIELDS OF MELANOPHILA ACUMINATA (COLEOPTERA: BUPRESTIDAE)

1980 ◽  
Vol 112 (2) ◽  
pp. 211-216 ◽  
Author(s):  
W. G. Evans ◽  
J. E. Kuster
Keyword(s):  
Forest Fires ◽  
Infrared Radiation ◽  
Solid Angle ◽  
Receptive Fields ◽  
Point Sources ◽  
Melanophila Acuminata

AbstractReceptive fields of the infrared receptors located in sensory pits adjacent to the mesocoxal cavities of Melanophila acuminata were measured using a goniometric apparatus and plotted on a Mollweide homolographic projection. The receptive fields extend mainly in a lateral and ventral direction. The total receptive area in units of solid angle is 5.80 steradians but the simultaneous field of perception of infrared radiation of all the sensilla in a pit is only 0.42 steradian. Based on these findings and on other evidence we believe that the infrared-sensitive sensilla function during flight and are used by these beetles for detecting point sources of heat, such as forest fires, from long distances.

Role of forest fires in Holocene stand-scale dynamics in the unmanaged taiga forest of northwestern Russia

The Holocene ◽  
2014 ◽  
Vol 24 (11) ◽  
pp. 1503-1514 ◽  
Author(s):  
Niina Kuosmanen ◽  
Keyan Fang ◽  
Richard HW Bradshaw ◽  
Jennifer L Clear ◽  
Heikki Seppä
Keyword(s):  
Forest Fires ◽  
Siberian Larch ◽  
Wavelet Coherence ◽  
Individual Tree ◽  
Study Region ◽  
Taiga Forest ◽  
The Impact ◽  
Wavelet Coherence Analysis ◽  
Northwestern Russia

Fossil pollen, conifer stomata, and charcoal records for the last 10,000 years were studied from three small hollow sites (Larix Hollow, Mosquito Hollow, and Olga Hollow) located at the modern western range limit of Siberian larch ( Larix sibirica) in northwestern Russia to investigate the role of forest fires in stand-scale dynamics of taiga vegetation. Wavelet coherence analysis was utilized to reveal the significance of fire on the vegetation composition at different timescales by assessing the phase and strength of the relationship between forest fires and most common boreal tree taxa in a time–frequency window. Pollen and stomata data show that all of the modern-day common tree taxa, including Norway spruce ( Picea abies) and Siberian larch, have been present in the study region since the early Holocene. The absence of charcoal layers at Mosquito Hollow suggests that this site has acted as a fire-free refugium with continuous dominance of spruce throughout the Holocene. Meanwhile, the Larix Hollow record indicates frequent local fire events and as a consequence, a more variable tree species composition. The wavelet coherence results show that the impact of forest fires on vegetation varies from short-term (<200-year periods) changes in individual tree taxa to long-term (400–800 years) changes in forest composition, such as the expansion of spruce population after local high-intensity fires around 7500–7000 cal. yr BP and the increase in abundance of birch and alder during periods of high fire frequency. Our results suggest that Holocene fire histories can be markedly different within a small geographical area, demonstrating the importance of site-specific factors in the local fire regime in the unmanaged taiga forest.

scholarly journals Addressing the Haze: The Role of Local Traditional Cultures and Islamic Teachings

ICR Journal ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 97-100
Author(s):  
Shahino Mah Abdullah
Keyword(s):  
Growth Rate ◽  
Forest Fires ◽  
Large Scale ◽  
Land Use Changes ◽  
Airborne Particles ◽  
Health Economy ◽  
Crop Growth Rate ◽  
The World ◽  
Related Mortality

The most frequent transboundary haze in the world takes place in Southeast Asia. It is usually caused by land-use changes, open burning, peat combustion, wildfires, and other farming activities. Serious haze occurred in 1983, 1997, 2005, 2006, 2009, 2010, 2013, 2015 and 2016, originating from large-scale forest fires in western Sumatra and southern Kalimantan, Indonesia. It caused adverse effects to locals as well as neighbouring countries, affecting their health, economy, agriculture, and biodiversity. Among the serious effects of haze are increased respiratory-related mortality due to toxic airborne particles, jet crashs and ship collisions due to restricted visibility, reduction of crop growth rate due to limited solar radiation, and extinction of endangered primates due to habitat loss. Neighbouring countries like Malaysia and Singapore sometimes have to close schools to prevent people from being exposed to air pollution, and its consequent respiratory ailments.  

scholarly journals About the role of environmental factors in carcinogenesis

2020 ◽  
Vol 169 ◽  
pp. 04003
Author(s):  
Sergey K. Pinaev ◽  
Olga G. Pinaeva ◽  
Alexey Ya. Chizhov
Keyword(s):  
Oxidative Stress ◽  
Environmental Factors ◽  
Young Children ◽  
Forest Fires ◽  
Malignant Neoplasms ◽  
The Sun ◽  
Child Population

There were found out the connections of the activity of the Sun and smoke of forest fires with the incidence of various forms of benign and malignant neoplasms in the population of young children 0-4 years old, in Khabarovsk Region, Russia. Thus, it was determined that so-called “sporadic” fluctuations in the incidence of neoplasms in the child population are not random. They are caused by long multi-year cycles of changes in the complex of environmental factors. The authors identified this phenomenon as “Alternative oncogenesis”, meaning by it the predominant occurrence of various forms of neoplasms in a certain period of time due to a change in the parameters of the complex of environmental factors. A proposed hypothesis is: ecologically linked oxidative stress as a cause of the epigenomic modulation leading to an imbalance between semaphorins and integrins that brings to oncogenesis.

Ultra-sensitive graphene–bismuth telluride nano-wire hybrids for infrared detection

Nanoscale ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 1579-1586 ◽  
Author(s):  
Saurav Islam ◽  
Jayanta Kumar Mishra ◽  
Abinash Kumar ◽  
Dipanwita Chatterjee ◽  
N Ravishankar ◽  
...  
Keyword(s):  
Bismuth Telluride ◽  
Infrared Radiation ◽  
Infrared Detection ◽  
Radiation Sensors

The myriad technological applications of infrared radiation sensors make the search for ultra-sensitive detectors extremely crucial.

The role of smoldering combustion on smoke emission in tropical forest fires

2006 ◽  
Vol 234 ◽  
pp. S159
Author(s):  
Carlos A. Gurgel Veras ◽  
Ernesto Alvarado
Keyword(s):  
Tropical Forest ◽  
Forest Fires ◽  
Smoke Emission ◽  
Smoldering Combustion
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