Post-fire effects in Siberian larch stands on multispectral satellite data

Abstract Aim Wildfire is a natural pulsed disturbance in landscapes of the Savannah Biome. This study evaluates short-term post-fire effects on leaf litter breakdown, the invertebrate community and fungal biomass of litter from three different vegetal species in a tropical stream. Methods Senescent leaves of Inga laurina, Protium spruceanum and Rircheria grandis (2 ± 0.1 g dry mass) were individually placed in litter bags (30 × 30 cm: 10 mm coarse mesh and 0.5 mm fine mesh) and submerged in the study stream before and after fire. Replicate bags (n = 4; individually for each species, sampling time, fire event and mesh size) were then retrieved after 20 and 40 days and washed to separate the invertebrates before fire event and again immediately after fire. Disks were cut from leaves to determine ash-free dry mass, while the remaining material was oven-dried to determine dry mass. Results The pre-fire mean decomposition coefficient (k = -0.012 day-1) was intermediate compared to that reported for other savannah streams, but post-fire it was lower (k = -0.007 day-1), due to decreased allochthonous litter input and increased autochthones production. Intermediate k values for all qualities of litter post-fire may indicate that fire is equalizing litter quality in the stream ecosystem. The abundance of scrapers was found to be more important than fungal biomass or shredder abundance, probably due to their functioning in leaf fragmentation while consuming periphyton growing on leaf litter. Conclusions Theses results indicate that fire can modify the relationships within decomposer communities in tropical stream ecosystems.

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Post-Fire Effects in Wetland Environments: Landscape Assessment of Plant Coverage and Soil Recovery in the Paraná River Delta Marshes, Argentina

Fire Ecology ◽

10.4996/fireecology.0802017 ◽

2012 ◽

Vol 8 (2) ◽

pp. 17-37 ◽

Cited By ~ 9

Author(s):

Mercedes Salvia ◽

Darío Ceballos ◽

Francisco Grings ◽

Haydee Karszenbaum ◽

Patricia Kandus

Keyword(s):

Fire Effects ◽

Paraná River ◽

River Delta ◽

Landscape Assessment ◽

Parana River ◽

Plant Coverage ◽

Post Fire Effects ◽

Soil Recovery

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Forests burnability in Siberian subregion and post-fire effects according to modern and retrospective satellite surveys

E3S Web of Conferences ◽

10.1051/e3sconf/202133301008 ◽

2021 ◽

Vol 333 ◽

pp. 01008

Author(s):

Anna Malkanova ◽

Andrey Zabrodin ◽

Evgenii Ponomarev

Keyword(s):

Satellite Imagery ◽

Fire Effects ◽

Retrospective Data ◽

Eastern Siberia ◽

Lena River ◽

Moisture Supply ◽

Drought Conditions ◽

Post Fire Effects ◽

Heat And Moisture ◽

Fire Impact

The dynamics of fires in the territory of Eastern Siberia (the territory of the Lena River basin in the middle reaches) has been studied with the use of materials from retrospective satellite imagery. The dependence of the burnability of forests in the local territories of Eastern Siberia on the level of heat and moisture supply is shown. The range of the burnability index (the number and area of fires) for the study area under extreme drought conditions was revealed, confirmed by retrospective data. It is shown that potentially the average annual values of the number of fires can be 2.5 times higher than the current statistics. Based on the invariant NDVI and NDWI indices, a range of changes in the characteristics of post-fire areas has been identified, which indirectly determines the level of fire impact on vegetation and the humidification regime.

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The post-fire effects on the outcrossing rate of a Brazilian savannah shrub, Helicteres sacarolha A.St.-Hil

Revista Brasileira de Botânica ◽

10.1590/s0100-84042005000100013 ◽

2005 ◽

Vol 28 (1) ◽

Cited By ~ 4

Author(s):

Edivani Villaron Franceschinelli ◽

Kamaljit S Bawa

Keyword(s):

Fire Effects ◽

Outcrossing Rate ◽

Brazilian Savannah ◽

Post Fire Effects

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Assessing Post-Fire Effects on Soil Loss Combining Burn Severity and Advanced Erosion Modeling in Malesina, Central Greece

Remote Sensing ◽

10.3390/rs13245160 ◽

2021 ◽

Vol 13 (24) ◽

pp. 5160

Author(s):

Ioanna Tselka ◽

Pavlos Krassakis ◽

Alkiviadis Rentzelos ◽

Nikolaos Koukouzas ◽

Issaak Parcharidis

Keyword(s):

Remote Sensing ◽

Soil Erosion ◽

Soil Loss ◽

Prediction Models ◽

Fire Effects ◽

Burned Area ◽

Strong Impact ◽

Central Greece ◽

High Soil ◽

Post Fire Effects

Earth’s ecosystems are extremely valuable to humanity, playing a key role ecologically, economically, and socially. Wildfires constitute a significant threat to the environment, especially in vulnerable ecosystems, such as those that are commonly found in the Mediterranean. Due to their strong impact on the environment, they provide a crucial factor in managing ecosystems behavior, causing dramatic modifications to land surface processes dynamics leading to land degradation. The soil erosion phenomenon downgrades soil quality in ecosystems and reduces land productivity. Thus, it is imperative to implement advanced erosion prediction models to assess fire effects on soil characteristics. This study focuses on examining the wildfire case that burned 30 km2 in Malesina of Central Greece in 2014. The added value of remote sensing today, such as the high accuracy of satellite data, has contributed to visualizing the burned area concerning the severity of the event. Additional data from local weather stations were used to quantify soil loss on a seasonal basis using RUSLE modeling before and after the wildfire. Results of this study revealed that there is a remarkable variety of high soil loss values, especially in winter periods. More particularly, there was a 30% soil loss rise one year after the wildfire, while five years after the event, an almost double reduction was observed. In specific areas with high soil erosion values, infrastructure works were carried out validating the applied methodology. The approach adopted in this study underlines the significance of using remote sensing and geoinformation techniques to assess the post-fire effects of identifying vulnerable areas based on soil erosion parameters on a local scale.

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Analysis of post-fire effects in pine stands in various landscape conditions of the boreal zone

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/574/1/012020 ◽

2020 ◽

Vol 574 ◽

pp. 012020

Author(s):

D A Danilov ◽

D V Gusev ◽

N V Belyaeva

Keyword(s):

Fire Effects ◽

Boreal Zone ◽

Post Fire Effects ◽

Pine Stands

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Remote sensing techniques to assess active fire characteristics and post-fire effects

International Journal of Wildland Fire ◽

10.1071/wf05097 ◽

2006 ◽

Vol 15 (3) ◽

pp. 319 ◽

Cited By ~ 491

Author(s):

Leigh B. Lentile ◽

Zachary A. Holden ◽

Alistair M. S. Smith ◽

Michael J. Falkowski ◽

Andrew T. Hudak ◽

...

Keyword(s):

Remote Sensing ◽

Fire Severity ◽

Fire Behavior ◽

Fire Effects ◽

Ecological Effects ◽

Fire Intensity ◽

Active Fire ◽

Post Fire Effects ◽

Remote Sensing Techniques ◽

Fire Characteristics

Space and airborne sensors have been used to map area burned, assess characteristics of active fires, and characterize post-fire ecological effects. Confusion about fire intensity, fire severity, burn severity, and related terms can result in the potential misuse of the inferred information by land managers and remote sensing practitioners who require unambiguous remote sensing products for fire management. The objective of the present paper is to provide a comprehensive review of current and potential remote sensing methods used to assess fire behavior and effects and ecological responses to fire. We clarify the terminology to facilitate development and interpretation of comprehensible and defensible remote sensing products, present the potential and limitations of a variety of approaches for remotely measuring active fires and their post-fire ecological effects, and discuss challenges and future directions of fire-related remote sensing research.

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Direct carbon emissions from Canadian forest fires, 1959-1999

Canadian Journal of Forest Research ◽

10.1139/x00-197 ◽

2001 ◽

Vol 31 (3) ◽

pp. 512-525 ◽

Cited By ~ 225

Author(s):

B D Amiro ◽

J B Todd ◽

B M Wotton ◽

K A Logan ◽

M D Flannigan ◽

...

Keyword(s):

Fuel Consumption ◽

Carbon Emissions ◽

Forest Fires ◽

Carbon Dioxide Emissions ◽

Fire Effects ◽

Fire Emissions ◽

Post Fire Effects ◽

Large Fires ◽

Sink Condition ◽

The Mean

Direct emissions of carbon from Canadian forest fires were estimated for all Canada and for each ecozone for the period 19591999. The estimates were based on a data base of large fires for the country and calculations of fuel consumption for each fire using the Canadian Forest Fire Behaviour Prediction System. This technique used the fire locations and start dates to estimate prevailing fire weather and fuel type for each of about 11 000 fires. An average of 2 × 106 ha·year1 was burned in this period, varying from 0.3 × 106 ha in 1978 to 7.5 × 106 ha in 1989. Ecozones of the boreal and taiga areas experienced the greatest area burned, releasing most of the carbon (C). The mean area-weighted fuel consumption for all fires was 2.6 kg dry fuel·m2 (1.3 kg C·m2), but ecozones vary from 1.8 to 3.9 kg dry fuel·m2. The mean annual estimate of direct carbon emissions was 27 ± 6 Tg C·year1. Individual years ranged from 3 to 115 Tg C·year1. These direct fire emissions represent about 18% of the current carbon dioxide emissions from the Canadian energy sector, on average, but vary from 2 to 75% among years. Post-fire effects cause an additional loss of carbon and changes to the forest sink condition.

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Post-wildfire flash flooding in small mountainous catchments: post-fire effects and characteristics of the November 2019 flash flood in Kineta, Greece

10.5194/egusphere-egu2020-5501 ◽

2020 ◽

Author(s):

Christos Filis ◽

Nafsika Ioanna Spyrou ◽

Michalis Diakakis ◽

Vassiliki Kotroni ◽

Konstantinos Lagouvardos ◽

...

Keyword(s):

Flash Flood ◽

Fire Effects ◽

Alluvial Fan ◽

Burned Area ◽

Greek Mythology ◽

Pressure System ◽

Flash Flooding ◽

Maximum Rainfall ◽

Post Fire Effects ◽

The Town

During the period 24-25 November 2019 a low pressure system with organised convective storms has affected Greece as it crossed the country from west to east. The system, which was name Gyrionis, after a name used in the Greek mythology, has produced heavy rainfall, with increased lightning activity and local hailstorms. In the area of western Attica the maximum rainfall has been reported with 92 mm of on 24 November and additional 115 mm in 25 November, adding to a storm total of 206 mm, which caused flash floods in the town of Kineta. The storm caused overflowing of local torrents draining the south slopes of Geraneia Ori, inducing significant damages in property and infrastructure mainly within the town and across the coastal zone.Field surveys showed that a wildfire that burned through almost the entire catchment of the main torrent (named Pikas) on 2018, played a crucial role in flooding and its impact on the town. At critical locations along the river, vegetation debris and eroded material of various grain sizes, including boulders, diminished dramatically the hydraulic capacity of the river, intensifying flooding in the downstream areas, which formed an alluvial fan.Based on comparison of pre- and post-flood aerial photography of the burned area, a major source of this deposited material was identified as burned trees still standing after the fire, uprooted from the river banks of the main channel and carried away together with additional soil debris. The material was jammed at a crucial location near the apex of the alluvial fan causing floodwaters to overflow and inundate significant parts of the fan&#8217;s apron, a geomorphological setting that increased the extent and impact of flooding further.Overall, the case of Kineta, is a characteristic case of post-wildfire flash flooding, in which the fire effects are critical in the enhancement of subsequent flooding phenomena.

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