A 2014-es jégtörés tulajdonságai és az azt követő erdészeti fakitermelés hatásai a Börzsöny erdeiben

Zoltán, László; Standovár, Tibor

doi:10.20332/tvk-jnatconserv.2018.24.208

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Among the explanatory variables, we excluded shrub and (nitrophilous) herbaceous cover indicators because a relationship with the ungulate effect was suspected. The relationship between nitrophilous herbaceous plants and soil disturbance has been shown in our previous work on the effects of the ice break in this region [43]. In the present study, this can be interpreted with the difference that ungulates specifically caused the soil disturbance.…”

Section: The Lack Of the Regenerationsupporting

confidence: 79%

Heavy Ungulate Pressure behind the Disappearance of Regeneration in Hungarian Forests

Zoltán,

Szmorad,

Standovár

2023

Forests

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Ungulate populations have surged to unsustainable levels in multiple areas in recent decades due to human intervention, making forestry and conservation practices arduous. The population of ungulates is also currently displaying a rising trend in Hungary, prompting decision-makers to commence substantial reduction efforts. Our study examined the ungulate impact in three forested regions of Hungary, employing field survey sampling plots on almost 50,000 hectares. Our findings revealed that regeneration browsing and soil disturbance were evenly high in these areas, while the cover of the regeneration layer was extremely low. Ungulate pressure was suspected as the cause of the lack of regeneration. Based on habitat and vegetation conditions, we divided our sample as favourable and unfavourable for regeneration. The cover of the regeneration categories was not significantly different between the two sets. The evidence of the direct indicators, including browsing and soil disturbance, coupled with the lack of regeneration, leads us to infer indirect signs of ungulate pressure. The absence of older and taller vegetation in the area also suggests long-standing ungulate pressure. Our investigation suggests that the high ungulate population can cause low abundance, even the lack of regeneration, not only locally but also at a regional scale.

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Section: The Lack Of the Regenerationsupporting

confidence: 79%

Heavy Ungulate Pressure behind the Disappearance of Regeneration in Hungarian Forests

Zoltán,

Szmorad,

Standovár

2023

Forests

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Application of Sentinel-1 radar data for mapping ice disturbance in a forested area

Zoltán

Friedl

Pacskó

et al. 2021

European Journal of Remote Sensing

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Comparative Analysis of Ice Break Damage in Two Börzsöny Mountain Valleys in Hungary in 2014 Based on Airborne Laser Scanning

Molnár¹,

Király²

2022

aslh

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Severe mechanical damage from frost and ice on trees occurred in the Börzsöny Mountains in Northern Hungary during 1–2 December 2014. The frost and ice affected 10,000 hectares overall; however, the two examined valleys suffered conspicuously different extents of damage. While the Rakottyás Valley study area had severe damage, the Pogány-Rózsás Forest Reserve suffered only moderate damage. Airborne Laser Scanning (ALS) and a field survey were utilised to assess the damage. Digital Surface Modell (DSM), Digital Terrain Model (DTM), and Normalised Digital Surface Modell (nDSM) were calculated from the dense point cloud in 3D. Elevation, slope and aspect were derived to describe site conditions. Damage thresholds were set for the ALS data (tree height < 5 m) and the ground-based damage (frequency > 90%). These were compared in a confusion matrix on a pixel scale, which showed partial agreement due to different sampling methods and ranges but also indicated that Rakottyás was more damaged (54.35% of the area) than Pogány-Rózsás (36.7%). The Total Accuracy was 0.54.

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A 2014-es jégtörés tulajdonságai és az azt követő erdészeti fakitermelés hatásai a Börzsöny erdeiben

Cited by 3 publications

References 5 publications

Heavy Ungulate Pressure behind the Disappearance of Regeneration in Hungarian Forests

Heavy Ungulate Pressure behind the Disappearance of Regeneration in Hungarian Forests

Application of Sentinel-1 radar data for mapping ice disturbance in a forested area

Comparative Analysis of Ice Break Damage in Two Börzsöny Mountain Valleys in Hungary in 2014 Based on Airborne Laser Scanning

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