Information and data systems
Processing of information and data systems
These sites primarily deal with issues focused on the main fields in which the company IDS operates - applied information systems, data processing, programming, study in fields of biology and ecology, which is being developed in response to applications in forestry, conservation, medicine, and others. In the case of your interest for other areas, please contact us.
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This website content is continuously updated. If you are interested in finding those documents that were recently added or modified, you can use the Find file on this web site. You can fill the begining date of the search and you would obtain list of new or changed documents up to the present.
Just as the technology changes, services offered by IDS evolve too. This development can be monitored via the website domain infodatasys.cz. In 2018, it is already 15 years since the domain inform you about the results of work at IDS. You can learn more in the section Services.
The next year of the workshop Forester of 21st century
was realized in Stachy (region of Šumava Mts.) at 26th February, 2015. This session was concerned in forest structure, soil features and water. Also following papers were presented.
In the last years, attention has been paid to the evaluation of historical changes in land use and influence of history on contemporary landscape diversity. The maps of stable cadastre were processed and utilized for lot of municipalities in the Czech Republic. The results of this work are available in the section Landscape ecology and landscape history (in Czech).
Article The temperature global gradients in the Czech Republic and region differentiation evaluates differences in average air temperatures in regions of the country. For this purpose, advanced geostatistical methods have been utilized. See also other articles in the section Climate.
Šumava Mts. (Bohemian Forest): ecology and nature conservation
Research in region of the Bohemian Forest (Šumava) is continuously updated section where materials are aimed to the state of nature in the mountains. Due to fierce debate concerning access to the mountain forests of the Šumava National Park, an article was written for the magazine Šumava - part 1 and part 2. It summarizes the current knowledge in the form available to the wider public.
The comparison of influence of active and passive management on the status and development of the spruce forest was related to possibility of choose an appropriate management of mountain forests. The bark beetle was recognized as a key species in the mountain forests, namely in regions where the interest of nature conservation would be in front of interest.
Brief Evaluation of forest management in the area of Ptačí potok (Bird Creek) in the NP Šumava shows intervention's harmfulness. This is an exemplary case of damage to the conservation subject in the national park. Such management practice does not meet the declared objective - the protection of forests in surrounding against the gradation of the spruce bark beetle (Ips typographus). The document was used as a base material in the initiative for Czech Environmental Inspectorate. This institution gave penalty to the Administration of NP and PLA Šumava on the basis of its investigation. Usefulness of so-called sanitation felling in areas of the National Park can be illustrated by the instruction of the director of Administration NP and PLA from October 17th, 2012, which imposes transportation of wood, which has been left to decay. Motivation is not a protection against bark beetle, but the extraction for profit.
Review: Misinterpretation of the data from the area left to the spontaneous development in the Šumava Mts. can lead to an abuse in the current discussion about so-called non-intervention in the territory of the Šumava National Park. An example is represented by review on the Vicena's text toward the area named Jewish Forest (Roklanský Forest).
The book Kindlmann P., Matějka K., Doležal P.
: Lesy Šumavy, lýkožrout a ochrana přírody
(Šumava forests, bark beetle and nature conservation; 326 pages, ISBN 978-80-246-2155-5) was published by company Karolinum
, where it can be ordered.
Basic information from the book was selected in the summary, which is available in a booklet
. The book is based on the results of years of research in the ecosystems in the Bohemian Forest and other mountain ranges of Central Europe.
The book was presented on meeting in the library of the Institute for Environmental Studies, Faculty of Sciences, Charles University in Prague, at November 13th, 2012. The performance was followed by discussion on the protection of nature in the Bohemian Forest. On this occasion, the press release
of the Shadow Scientific Council of National Park Šumava was presented. This Shadow Scientific Council is composed of experts in the fields of biology, ecology, forestry and nature conservation. The press release responds to current events in the Šumava National Park.
The book Šantrůčková H., Vrba J., Křenová Z., Svoboda M., Benčoková A., Edwards M., Fuchs R., Hais M., Hruška J., Kopáček J., Matějka K., Rusek J.
: Co vyprávějí šumavské smrčiny. Průvodce lesními ekosystémy Šumavy.
(What tell the Šumava spruce forests. Guide to Šumava forest ecosystems) was published under cooperation the Administration NP and PLA Šumava, the Faculty of Science, University of South Bohemia and the Czech Society for Ecology. The book attempts to explain many myths and misconceptions regarding mountain (climax) spruce. It is based on modern knowledge about the dynamics of climax spruce forests, which is different from the dynamics of mixed forests growing at lower altitudes.
The book is also available in the PDF format. Download - Open PDF
(approx. 36 MB).
Software and data processing
FotoOverlay is an application for processing images suited for measurement (surveyor images)
Typical examples of such images are digital photos from the microscope. The program allows not only easy measurement of length and counting the objects in the image, but also processing - overlay multiple images of two or more planes of focus. Detailed features of the program are described in the help
. Since the program allows easy integration with software TextSearch
and browser IDS ViewImages
, the user can simultaneously create database of digital images that can be described by a set of optional attributes.
The term surveyor image
was taken from photogrammetry, which is most commonly used to describe aerial photographs, a photo with a central projection, where the pixel size (or the size of the area corresponding to that pixel) is variable depending on the position in the image. So-called orthophotos are formed during the processing of these images. An orthophoto is orthogonal projection of images, where the pixel size is independent of its position. Program FotoOverlay
accesses to microphoto as if it was such as orthophoto, but with a different scale.
DataCollector - the applications for data collection is available
Users collecting large sets of data such as questionnaires need to convert the data into a data form. The applications most commonly used (such as MS Excel) are employed for this purpose. However, they have many disadvantages. One is a high probability to enter erroneous data, because the collected data is necessary somehow encode. Programs like MS Excel allow entering any value into the cell. Therefore, DataCollector
ensure proper encoding of data written in the database table.
Beta version of the program for the preparation of registers based on the document in PDF format is now available. This program is useful, for example in publication prepress. It was used to generate the index for the book Kindlmann P., Matějka K., Doležal P. (2012): Šumava forests, bark beetle and nature conservation.
Processing scanned maps with color legend
Working with many printed maps would be problematic if they are maps whit areas assigned to the legend items only by colors. If the legend contains a larger set of items, it may be difficult to estimate what area corresponds to what the legend item. This problem can be solved in the PlotOA
software. The latest version of this program can automatically assign the appropriate item from the color legend. The prerequisite is to scan the map and its transformation into a coordinate system.
GIS: calculation of indices based on DEM
The program PlotOA
can calculate different indices (gradients - slopes, exposition, curvature, heath index, potential direct radiation, average temperature) based on digital elevation model (DEM). These results can be used for example for interpreting ecological gradients in the landscape or for vegetation mapping.
Mosses of Europe
Database of valid names of mosses of Europe was prepared according the publication Frey W., Frahm J.-P., Fischer E., Lobin W., Blockeel T.L. (2006):
The liverworts, Mosses and Ferns of Europe. Harley Books, Essex
. Of course, there is the inclusion of all reported synonyms to the database. It allows to search the bryophyte valid names corresponding to the synonyms. This database is available on a new version of SpeciesNames
program. The program allows switching between different dictionaries (databases). The user can also edit existing dictionaries or connect own dictionary.
The computer program RaTrIds
enables to transform GIS rastr data between co-ordinate systems S-JTSK, S-42 and WGS84/UTM zone 33n.
Published pages within www.infodatasys.cz are optimalized with MS Internet Explorer
, they were checked by using some other software. Several papers are published via a format PDF. These files are possible to display/print by Adobe (Acrobat) Reader
version 6 or higher - You can obtain this free installation in the Adobe download pages.
Date of the last actualization October 18th, 2018