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  • Author: Tamás Márton Németh x
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Monitoring of the Hydrological Balance in the Area of the Kiskunság National Park Directorate

Abstract

The aim of this paper is to show how hydrological measurements made in forests and grasslands can contribute to the conservation treatment of ecologically significant habitats. The study was carried out in three different forest stands and their surrounding grasslands in the area of the Kiskunság National Park Directorate between 2012 and 2015. Different methods were applied during the research of the water balance. The average values of canopy interception were 23% in the Scots pine stand and 19.2% in the grey poplar stand. Rainfall quantity, intensity, and dispersion as well as tree structure and health greatly influenced interception. The transpiration values were 205 mm in the coniferous stand, 405 mm in the deciduous stand, and 370 mm in the black locust stand. The water balance of the habitats show that the water uptake is much lower in the grasslands than it is in the surrounding forest stands.

Open access
Habitat selection of the Common Quail (Coturnix coturnix) in an intensively managed agricultural environment

Abstract

This study investigated the habitat selection of the Common Quail (Coturnix coturnix) during the breeding season of 2014 in an intensively managed agricultural environment (LAJTA Project, North-West Hungary). In order to assess the habitat preferences of the Common Quail, habitat composition around occupied plots were compared with unoccupied control plots. To characterize the habitat, a total of 11 variables related to vegetation structure and diversity, food availability and landscape were quantified. Multivariate methods (PCA and GLMs) were used to distinguish the main factors influencing habitat selection and to model the presence of the Common Quail. Based on our results, in the LAJTA Project, high probability of Common Quail presence can be predicted in plots with higher herbaceous cover and more abundant arthropod communities. The network of ecotone habitats, particularly the proximity to woody habitats, also appeared to have significant importance during the breeding season.

Open access
Continuous field soil moisture content mapping by means of apparent electrical conductivity (ECa) measurement

Abstract

A soil moisture content map is important for providing information about the distribution of moisture in a given area. Moisture content directly influences agricultural yield thus it is crucial to have accurate and reliable information about moisture distribution and content in the field. Since soil is a porous medium modified generalized Archie’s equation provides the basic formula to calculate moisture content data based on measured ECa. In this study we aimed to find a more accurate and cost effective method for measuring moisture content than manual field sampling. Locations of 25 sampling points were chosen from our research field as a reference. We assumed that soil moisture content could be calculated by measuring apparent electrical conductivity (ECa) using the Veris-3100 on-the-go soil mapping tool. Statistical analysis was carried out on the 10.791 ECa raw data in order to filter the outliers. The applied statistical method was ±1.5 interquartile (IRQ) distance approach. The visualization of soil moisture distribution within the experimental field was carried out by means of ArcGIS/ArcMAP using the inverse distance weighting interpolation method. In the investigated 25 sampling points, coefficient of determination between calculated volumetric moisture content data and measured ECa was R2 = 0.87. According to our results, volumetric moisture content can be mapped by applying ECa measurements in these particular soil types.

Open access