Petr Vahalík

ORCID: 0000-0003-3404-3095
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Pharmacological Effects of Medicinal Plants
  • Forest Insect Ecology and Management
  • Ethnobotanical and Medicinal Plants Studies
  • Plant Pathogens and Fungal Diseases
  • Animal Diversity and Health Studies
  • Rangeland Management and Livestock Ecology
  • Ecology and Vegetation Dynamics Studies
  • Horticultural and Viticultural Research
  • Botanical Research and Applications
  • Botany and Plant Ecology Studies
  • Remote Sensing and LiDAR Applications
  • African Botany and Ecology Studies
  • Essential Oils and Antimicrobial Activity
  • Plant Diversity and Evolution
  • Mycorrhizal Fungi and Plant Interactions
  • Plant and Fungal Interactions Research
  • Species Distribution and Climate Change
  • Plant and animal studies
  • Forest ecology and management
  • Mediterranean and Iberian flora and fauna
  • Water management and technologies
  • Bryophyte Studies and Records
  • Mycotoxins in Agriculture and Food
  • 3D Modeling in Geospatial Applications
  • Fire effects on ecosystems

Mendel University in Brno
2011-2024

University of Florence
2023

Institute of Landscape Ecology of the Slovak Academy of Sciences
2022

Comenius University Bratislava
2022

Institute of Botany of the Slovak Academy of Sciences
2022

Fusarium circinatum, the causal agent of pine pitch canker (PPC), is currently one most important threats Pinus spp. globally. This pathogen known in many pine-growing regions, including natural and planted forests, can affect all life stages trees, from emerging seedlings to mature trees. Despite importance PPC, global distribution F. circinatum poorly documented, this problem also true hosts within countries that are affected. The aim study was review with a particular focus on Europe. We...

10.3390/f11070724 article EN Forests 2020-07-01

Societal Impact Statement Conserving frankincense trees ( Boswellia ) is crucial for both ecological and socio‐economic reasons. Surveying these in the field using remote sensing unmanned aerial vehicles Socotra Archipelago, we found that Socotran are threatened by forest fragmentation, overgrazing, increasingly frequent extreme climate events. A better understanding of distribution threats important insular species will improve conservation policy local authorities benefit communities...

10.1002/ppp3.10563 article EN cc-by-nc-nd Plants People Planet 2024-08-15

This article is a broad review focused on dragon trees—one of the most famous groups trees in world, well known from ancient times. These tertiary relicts are severely endangered area where they grow. The characteristic features tree group described and species belonging to this listed. gathers together current knowledge regarding taxonomy, evolution, anatomy morphology, physiology, ontogeny arborescent species. Attention also paid composition, harvesting, medicinal, ethnobotanical use resin...

10.3390/f11020236 article EN Forests 2020-02-21

European forests are threatened by increasing numbers of invasive pests and pathogens. Over the past century, Lecanosticta acicola, a foliar pathogen predominantly Pinus spp., has expanded its range globally, is in impact. acicola causes brown spot needle blight, resulting premature defoliation, reduced growth, mortality some hosts. Originating from southern regions North American, it devastated USA's states early twentieth 1942 was discovered Spain. Derived Euphresco project...

10.1016/j.foreco.2023.120847 article EN cc-by-nc-nd Forest Ecology and Management 2023-03-23

Unsustainable overgrazing is one of the most important threats to endemic and endangered population dragon’s blood tree (Dracaena cinnabari) on Socotra Island (Republic Yemen). However, there a lack information about exact size its conservation status. We estimated D. cinnabari using remote sensing data. The age structure was inferred relationship between crown projection area number branch sections. importance each sub-population assessed specially developed index. Finally, future...

10.3390/su11133557 article EN Sustainability 2019-06-28

The Socotra Archipelago (Yemen) is an interesting biodiversity hotspot, with a significant proportion of endemic species that have evolved to survive in arid subtropical environment, inscribed as World Heritage Site by UNESCO. terrestrial ecosystems face several threats, including climate change, overgrazing and soil degradation. Island has four the genus Commiphora (Burseraceae). Little known about their local distribution ecology, yet these trees could be useful indicator species. Our...

10.3389/ffgc.2023.1183858 article EN cc-by Frontiers in Forests and Global Change 2023-06-02

The endemic Boswellia species (Burseraceae) on Socotra Island (Yemen) are of great local significance due to their various ethnobotanical uses. However, despite the fact that these trees endangered, little is known about biology. We tested seed germination rates in controlled experiments (trials 21 days) for two subsequent years and nine taxa occurring Island. For this, seeds were collected island-wide from a wide range localities several populations per species. observed differences among...

10.3390/plants11111418 article EN cc-by Plants 2022-05-26

The last remaining Dragon Tree Forest on Earth survives a small plateau (Roqeb di Firmihin) in Socotra Island (Yemen). Socotran Dragon’s Blood (Dracaena cinnabari Balf. f.) is endemic to the Archipelago UNESCO World Heritage Site. Being culturally important and endangered tree species, its conservation priority. Despite this, complete inventory of Firmihin Dracaena forest (14.9 km2) has never been attempted before. We applied use unmanned aerial vehicles (UAVs) for first time conserving...

10.3390/f14040766 article EN Forests 2023-04-08

Populations of Dracaena serrulata are disappearing at an alarming rate in the Arabian Peninsula. They being destroyed by herders who use leaves as fodder for camels, goats, and sheep during dry season. Up until now, precise information about current distribution population status D. Oman have not been published. To fill this gap, main aim work was to map species Dhofar Mountains (Oman) define conservation health populations. Three isolated sub-populations study were defined mapped: Jabal...

10.3390/f11030322 article EN Forests 2020-03-14

Brown spot needle blight (BSNB), caused by Lecanosticta acicola (Thüm.) Syd., is an emerging forest disease of Pinus species originating from North America and introduced to Europe Asia. Severity spread the has increased in last two decades as a response climate change. No modeling work on spread, severity, climatic suitability, or potential distribution been done for this important pathogen. This study utilizes global dataset 2,970 independent observations L. presence absence geodatabase,...

10.3389/ffgc.2023.1221339 article EN cc-by Frontiers in Forests and Global Change 2023-07-28

Abstract Dragonflies are important bioindicators of aquatic ecosystem health. We discuss the distribution and richness 22 dragon- damselfly species known from Socotra Archipelago UNESCO World Heritage Site (Yemen) in western Indian Ocean. compiled 841 records literature, field data museum collections, covering a surveying period 123 years (1896–2019). Distribution only endemic, Bluet Azuragrion granti (McLachlan, 1903), an indicator pristine lotic waters, is updated. Relatively higher...

10.1007/s12210-020-00942-6 article EN cc-by Rendiconti lincei. Scienze fisiche e naturali 2020-08-12

The conventional inventory is time-consuming and expensive, however the remote sensing method a useful tool to make orchard faster cheaper.The aim of this work carry out an old using low-cost system boarded on drone equipped only with camera RGB (Red, Green Blue) added NIR (Near-infrared) managers.First, position measurement some individual trees was done then, Unmanned Aerial Vehicle (UAV) (visible part spectrum) image used create orthophoto images 5 cm spatial resolution.The proposed...

10.17660/ejhs.2023/006 article EN European Journal of Horticultural Science 2023-02-15

Possibilities of Forest Altitudinal Vegetation Zones Modelling by Geoinformatic AnalysisAccording to Zlatnik (1976) there are 10 forest vegetation zones on the territory former Czechoslovakia. These at present being modeled phytocenological studies using bioindicator species plants. Their incidence is affected many abiotic factors, like temperature, precipitation or influence climatic-inverse locations. By effective modelling factors affecting site requirements species, it possible make a...

10.2478/v10285-012-0038-8 article EN Journal of Landscape Ecology 2011-01-01

Abstract Atmospheric deposition-related potentially toxic elements (PTEs) can contaminate mountain forest ecosystems. The influence of tree species is being increasingly recognised as an important factor in the deposition loads soils. However, relevant modelling studies about pollution with PTEs, concerning composition, are lacking. aim this study was to evaluate effect European beech ( Fagus sylvatica L.) and Norway spruce Picea abies (L.) H. Karst.) on soil mushroom associated health risks...

10.1038/s41598-022-09400-9 article EN cc-by Scientific Reports 2022-03-30

We examine the distribution of Dracaena cinnabari, Socotran Dragon’s Blood Tree, an endangered species endemic to island Socotra (Yemen)—and we propose accessibility approach its conservation, taking proximity local communities and land users into account. Using present occurrence D. applied a machine learning algorithm (random forest classifier) estimate potential across (overall validation accuracy 0.91) based on available climatic physiographic parameters. In parallel, used methodology...

10.3390/f13081276 article EN Forests 2022-08-12

Detailed, three-dimensional modeling of trees is a new approach in botanical taxonomy. Representations individual are prerequisite for accurate assessments tree growth and morphological metronomy. This study tests the abilities 3D to determine various metrics habit compare differences. The included four species genus Dracaena: D. draco, cinnabari, ombet, serrulata. Forty-nine point clouds were created, their derived compared. Our results indicate possible application dendrological Basic...

10.3390/f11030272 article EN Forests 2020-02-28

The rural landscape on the Socotra Island completely predominates, urban can only be discussed in connection with capital city Hadibo (about 20 thousand inhabitants).The most predominant type of farming is pastoralism, mainly goats and sheep are raised, to a lesser extent cows, camels, donkey an endangered farm animal.Family farms part community pastures, woodlands, forests.They farmed silvo-pastoral systems, where trees provide important source food for livestock dry season at same time...

10.11118/978-80-7509-979-2-0078 article EN 2024-01-01
Coming Soon ...