Oto Kaláb

ORCID: 0000-0003-3485-9377
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Species Distribution and Climate Change
  • Orthoptera Research and Taxonomy
  • Botany and Plant Ecology Studies
  • Ecology and Vegetation Dynamics Studies
  • Bryophyte Studies and Records
  • Fossil Insects in Amber
  • Lichen and fungal ecology
  • Video Analysis and Summarization
  • Animal Behavior and Reproduction
  • Wildlife Ecology and Conservation
  • Advanced Image and Video Retrieval Techniques
  • Advanced Vision and Imaging
  • Neurobiology and Insect Physiology Research
  • Insect and Arachnid Ecology and Behavior
  • Time Series Analysis and Forecasting
  • Plant and animal studies
  • Animal Vocal Communication and Behavior

University of Ostrava
2015-2025

Zoraptera is one of the smallest and least known insect orders, with only 47 described species, mostly from tropical regions. Data on their distribution remain largely scattered throughout extensive often old and/or not easily accessible literature. Recent changes in supraspecific classification order, combined recent discoveries new species other taxonomic changes, have made understanding even less clear. To summarize update knowledge worldwide Zoraptera, we compiled a data resource...

10.1038/s41597-025-04696-4 article EN cc-by-nc-nd Scientific Data 2025-02-28

Bryological research carried out from 2008 in Tajikistan and Kyrgyzstan brought interesting data on the occurrence of epiphytic bryophytes which have not been recorded yet there. One species was recently described as a new (<em>Orthotrichum pamiricum</em>) some other newly are considered rare or endangered region Middle Asia. To make detailed field monitoring with aim mapping their distribution wild complex mountainous terrain, it necessary first instance to identify area...

10.5586/asbp.3543 article EN cc-by Acta Societatis Botanicorum Poloniae 2017-06-05

In this study, we describe an inexpensive and rapid method of using video analysis identity tracking to measure the effects tag weight on insect movement. a laboratory experiment, assessed associated context-dependent movement, choosing temperature as factor known affect movement behavior. We recorded movements groups flightless adult crickets Gryllus locorojo (Orthoptera:Gryllidae) affected by no (control); light, medium, or heavy tags (198.7, 549.2, 758.6 mg, respectively); low,...

10.1371/journal.pone.0255117 article EN cc-by PLoS ONE 2021-07-22

The European mole cricket, Gryllotalpa gryllotalpa, feeds on a wide range of crops and can also damage plants with its burrowing activities. In suitable habitats (like those damp, rich soils in flood plains), G. gryllotalpa numbers increase to high levels. On the other hand, abundance has dramatically decreased north-western Europe partly due direct eradication excessive pest control. Using habitat suitability modelling, we identified areas for occurrence based previous reports environmental...

10.1016/j.heliyon.2023.e14826 article EN cc-by Heliyon 2023-04-01

Abstract In the past, insect species richness was high in Central European seminatural grasslands, which were characterized by low‐intensity land use. Currently, however, hay most of these grasslands is mechanically harvested, negatively impacts biodiversity. One way to reduce this negative effect leave unmown patches as refuges. current research we evaluated short‐term effects leaving an patch on taxonomic and functional diversity Orthoptera assemblage a meadow. We found that orthopteran...

10.1111/ens.12404 article EN Entomological Science 2020-02-17

Recent changes in insect distribution are consistent with the expected interacting effects of climate and habitat change. The orthopteran Ruspolia nitidula has expanded its area Western Central Europe recent decades. Because males emit a sound that is easily detected at distance up to 40 m, it possible detect spreading individuals therefore document routes rates spread. Using occurrence data landscape scale three methods, including least-cost path analysis suitability, we estimated R....

10.3390/insects12070639 article EN cc-by Insects 2021-07-14

Abstract Using 35 presence-only data samples and five uncorrelated bioclimatic variables, we made species distribution models (SDMs) for 4 of critically endangered (CR) liverworts from genus Jungermanniales Marchantiales ( Cephaloziella elegans , Leiocolea heterocolpos Lophozia wenzelii Riccia papillosa ) using the maximum entropy modelling method (MaxEnt). Since were CR species, only one model proved to be strong enough used in field. However, SDMs can serve as effective fast tools...

10.1515/cszma-2017-0011 article EN Acta Musei Silesiae. Scientiae Naturales 2017-11-01

We introduce a problem of tracking small animals, especially insects. To solve this problem, we focus on visual in recorded movies, propose our pattern mechanism based F -transform, and implement user-friendly software to handle the movies. The core is compared with five state-of-the-art algorithms: KCF, MIL, TLD, Boosting MedianFlow from processing time algorithm failure rate point views. Based results computed 1000 movie frames, observed that proposed F-transform fastest most reliable method.

10.1109/dsmp.2018.8478585 article EN 2018-08-01

Tracking animals using transmitters is a busy research branch in zoology. In this paper, we study the effect of temperature and transmitter's weight on field cricket's movement. We recorded movement 180 crickets with 4K camera captured movies were analyzed by novel tracking algorithm based soft-computing technique called F-transform. The resulting data have character multivariate time series show how descriptive statistics, linear regression, linguistic fuzzy rules, random forests might be...

10.1109/scis-isis.2018.00128 article EN 2018-12-01

Abstract The study presents the distribution of genera Orthotrichum s.l. and Nyholmiella in phytogeographical district 98. Nízký Jeseník, follows project carried out between years 2005 2009 nearby 97. Hrubý Jeseník. total number 57 locations was visited during year 2015, 142 samples mosses were collected. Altogether, 9 species genus 1 recently recorded studied area. Lists localities are given.

10.1515/cszma-2015-0029 article EN Acta Musei Silesiae. Scientiae Naturales 2015-12-01

The European mole cricket, Gryllotalpa gryllotalpa , feeds on a wide range of crops and can also damage plants with its burrowing activities. In suitable habitats (like those damp, rich soils in flood plains), G. numbers increase to high levels. Using habitat suitability modelling, we identified areas for occurrence based previous reports environmental data. We limited our study area regions where is the only known species. most important variables models were found be relative air humidity...

10.2139/ssrn.4034077 article EN SSRN Electronic Journal 2022-01-01
Coming Soon ...