The aims and results of the nature-protection management on the North-east Hungarian mires

Nagy, János; Molnár, Attila; Cserhalmi, Dániel; Szerdahelyi, Tibor; Szirmai, Orsolya

doi:10.1556/crc.35.2007.2.162

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…After many arid years and increasing nutrient load, the raised bog associations were presumably forced back, and forest associations came to the front. The willow carr expanded, and nitrofrequent species (Bidens cernua, Bidens tripartita, Polygonum lapathifolium, Epilobium tetragonum, Epilobium hirsutum, Cicuta virosa) overran the open peat-moss surfaces, just like in the Nyíres-tó mire after two drying years, and heavy wild-treading in 1996 (Nagy et al 2007). It seems, the foresting processes not just caused by the weather conditions, but the effect of the pig farm.…”

Section: Resultsmentioning

confidence: 99%

The reconstruction of vegetation change in the last 55 years on a mire of Bereg plain (Hungary)

Nagy¹,

Cserhalmi²,

B³

2008

Acta Botanica Hungarica

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The study area is the peaty bed of Navad-patak mire situated in the NorthEastern Alföld, on the Bereg plain, which is slightly investigated area. The purpose of our research was to reconstruct the recent vegetation dynamic processes of the mire from 1950 till 2005. Beside the aerial photos we used the ERDAS Imagination remote sensing program, and made digital photo interpretation. We divided the vegetation history into three parts. In the first period, the nutrient load of the mire was increased, peat decaying and foresting processes started, the open peat-moss dominated associations (Eriophoro vaginati-Sphagnetum, Carici lasiocarpae-Sphagnetum) were disappeared. In the second period the expansion of the forest vegetation continued, the species composition transformed, and the characteristic species of the mentioned associations (Eriophorum vaginatum, E. angustifolium, Carex lasiocarpa, Drosera rotundifolia, Sphagnum magellanicum) were all disappeared. The third period starts with the artificial flooding in 1994. In the beginning the peat-mosses were all extinct, floating mires appeared immediately and their quick succession started and still runs. The fourth period would be start with the appearance of peat-mosses.

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Section: Resultsmentioning

confidence: 99%

The reconstruction of vegetation change in the last 55 years on a mire of Bereg plain (Hungary)

Nagy¹,

Cserhalmi²,

B³

2008

Acta Botanica Hungarica

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“…Rapid water replenishment seems to be much more dangerous than drought because thin layers of peat cannot rise and float so that Sphagnum dies beneath the rising water table (Nagy and Tuba 2003), as happened at Bence-tó mire (Nagy et al 2007). At Nyíres-tó mire, the water table was raised very slowly so that the central peat was re-floated and the vitality of bog populations improved continuously.…”

Section: Drainage and Climate Changementioning

confidence: 99%

Changes in a Wetland Ecosystem: A Vegetation Reconstruction Study Based on Historical Panchromatic Aerial Photographs and Succession Patterns

Cserhalmi

Nagy

Kristóf³

et al. 2011

Folia Geobot

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This paper presents the methodology and results of a vegetation reconstruction method based on botanical sampling, the knowledge of succession pattern, digital photograph-interpretation and automatic delineation via image segmentation. The aim is to provide a methodology for interpretation of archived black-and-white aerial photographs, which can be applied at other study sites. Our study area was the Nyíres-tó mire in the Bereg Plain (NE Hungary). Initially, botanical sampling was carried out, and this was followed by separation and identification of current vegetation types. In our study we selected automatic delineation using multi-resolution image segmentation as the method for vegetation mapping. Based on the present-day vegetation map produced and the known successional pathway of the mire, archive aerial photographs were analyzed separately in reverse chronological order to derive plant associations present at the different photograph acquisition dates. With this method we were able to make a chronological sequence of digital vegetation maps over a period of almost fifty years . The analysis of vegetation maps showed that forest cover increased steadily until 1988. After an artificial water supply was introduced (in 1986), the spread of tree-dominated associations became slower, and the relative cover of the different vegetation types reached a stable state.

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The Southernmost Sphagnum-dominated Mires on the Plains of Europe: Formation, Secondary Succession, Degradation, and Protection

Nagy¹

2011

Bryophyte Ecology and Climate Change

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The aims and results of the nature-protection management on the North-east Hungarian mires

Cited by 4 publications

References 6 publications

The reconstruction of vegetation change in the last 55 years on a mire of Bereg plain (Hungary)

The reconstruction of vegetation change in the last 55 years on a mire of Bereg plain (Hungary)

Changes in a Wetland Ecosystem: A Vegetation Reconstruction Study Based on Historical Panchromatic Aerial Photographs and Succession Patterns

The Southernmost Sphagnum-dominated Mires on the Plains of Europe: Formation, Secondary Succession, Degradation, and Protection

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