K. Török

K. Török
Hungarian Academy of Sciences | HAS · Institute of Ecology and Botany

23.09
 · 
PhD in vegetation science

About

37
Publications
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421
Citations

Publications

Publications (37)
Article
There is limited availability of seeds of native species in many countries for grassland restoration therefore ex situ seed banks can gain importance as source of germplasm in the future. We tested the usability of seed accessions of the Pannon Seed Bank for reintroduction with the aim to restore sandy grassland in Hungary. Seeds of ten native sand...
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Invasive species are among the main threats to grassland biodiversity, and nature conservation management seeks the best methods to eliminate them and to restore natural habitats. We studied the long‐term effect of mowing on the restoration of Pannonian sand grassland after elimination of invasive black locust (Robinia pseudo‐acacia) plantation in...
Article
To preserve the natural genetic pattern of species and to avoid the introduction of non-adapted ecotypes during restoration, seed transfer should be spatially restricted. Instead of applying administrative borders in the absence of species-specific empirical data, biogeographical knowledge can be used as a proxy. Hungary was used as a suitable test...
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Aichi Target 15 aims to enhance the resilience of ecosystems through the restoration of 15% of degraded land by 2020. Compliance with the target is still insufficient, partly due to the lack of appropriate baselines and knowledge of restoration efforts. The four-level model of ecosystem condition was suggested to set the baseline and support the es...
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Community assembly theory is suggested as a guiding principle for ecological restoration to help understand the mechanisms that structure biological communities and identify where restoration interventions are needed. We studied three hypotheses related to propagule limitation, stress‐dominance and limiting similarity concepts in community assembly...
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Questions The restoration of unused urban‐industrial areas has largely been neglected despite their great potential for nature conservation purposes. We applied three plant introduction treatments at a highly degraded industrial area to test whether plant material introduced to industrial areas initiate plant assemblages similar to the composition...
Article
Question What is the effect of invasive common milkweed (Asclepias syriaca L.) on the germination and early establishment of native grass species during open sand grassland vegetation recovery in old‐fields?. Location Fülöpháza Sand Dune Area, Hungary. Methods A small‐scale experiment was carried out in a sandy old‐field infested by Asclepias. We...
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Scaling-up ecological restoration demands the involvement of private sector actors. Experience regarding science-based habitat restoration programs in the sector should be made available to support further joint projects. In our case, hierarchical restoration prioritization was applied to select best target for habitat reconstruction at a Hungarian...
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There is a lack of knowledge on germination capabilities of native species and their relation to field establishment that could help optimize ecological restoration efforts. We studied laboratory germination and second year field establishment of 12 native vascular dry grassland plant species in the frame of a restoration project in NE Hungary. Our...
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The application of filter-based assembly model is a promising concept to support ecological restoration. The filters illustrate dispersal, abiotic and biotic constraints that narrow down the species pool and determine the realized species composition. The aim of restoration interventions is the manipulation of filters to achieve restoration target....
Article
1.Soil nitrogen immobilization by carbon amendment is a management technique used for conservation purposes to increase the competitive ability of late-seral plant species over early-seral species based on their different tolerance of low soil nitrogen content. 2.We immobilized nitrogen over six growing seasons on three ex-arable fields with poor s...
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There is an increasing need for aggregated biodiversity indicators to inform policy decisions at all levels from local to global. Despite their similar policy goals, low-level (e.g. local, regional) and high-level (e.g. continental, global) indicator development is generally performed independently, and the resulting indicators are often incompatib...
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Abandoned agricultural fields are potential sites for the regeneration of natural vegetation, and land abandonment is a widespread phenomenon in the developed world. We studied the vegetation of 161 old-fields in the Kiskunság, central Hungary. Old-fields were categorized into three age groups based on historical aerial photographs: fields abandone...
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Various carbon sources were applied to promote the microbial immobilization of soil nitrogen in order to facilitate the regeneration of native vegetation on abandoned arable land with sandy soil. The aim was to investigate whether carbon addition affected the microbial biomass and available nitrogen content of the soil. The experimental area was lo...
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This paper demonstrates a possible application of large historical vegetation data sets as reference to reveal natural trends. Phytosociological releves re-sampled after 3-6 decades were used to detect and interpret long-term plant compositional changes of seven rock grassland communities in Hungary. Altogether 151 re-established plots were subject...
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2 Institute of Ecology and Botany of the Hungarian Academy of Sciences Abstract: In Hungary, large abandoned agricultural areas have been invaded by the non-indigenous common milkweed ( Asclepias syriaca L.). This species hinders the regeneration of sand y oldfields to open sand grassland (Pannonic sand steppes - Annex I 6260 habitat type). Glyphos...
Article
Source: Google scholar, Google scholar link , GDI: 13862801795202919539, GDI-HASH: c6y30siQYsAJ, References: Szabó R, Halassy M, Török K, Szili-Kovács T: Ecological restoration of old fields in the sandy plains of Hungary. Phytogeographical problems of synanthropic plants. Proceedings of the IV. Antropization and environment of rural settlements. F...
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Full-text available
Application of organic materials to soils to enhance N immobilization into microbial biomass, thereby reducing inorganic N concentrations, was studied as a management option to accelerate the reestablishment of the native vegetation on abandoned arable fields on sandy soils the Kiskunság National Park, Hungary. Sucrose and sawdust were used at thre...
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Full-text available
In order to accelerate the natural regeneration of abandoned sandy arable areas, various carbon sources were used to promote the microbial immobilization of soil nitrogen. Investigations were made to determine the effect of the treatments on the microbial activity and biomass of the soils. The reliability of estimation of microbial biomass was comp...
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Full-text available
Biological invasions in Hungary are causing severe problems as a result of recent introductions and rapid land use changes. Poorly managed agricultural and rural, disturbed areas, and aquatic ecosystems are the most prone to plant invasions. Dry grasslands and semi-natural forests are less prone to invasions. A few plant species have led to human h...
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Source: Google scholar, Google scholar link , GDI: 1046716279339006890, GDI-HASH: qrueCumuhg4J, Cited by: 4
Article
. Experiments were designed to test the applicability of nitrogen immobilization as a means of accelerating the recovery of an endemic open sandy grassland (Festucetum vaginatae danubiale) on old fields in the Great Hungarian Plain. Effects of various carbon sources (sucrose, starch, cellulose and sawdust) and their combinations in different quanti...
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Full-text available
The study aimed to select the appropriate type and dosage of carbon sources for the restoration of endemic sandy grassland (Festucetum vaginatae danubiale) in the Kiskunság National Park by means of soil nitrogen immobilization. A laboratory incubation experiment was set up using soil samples collected from a field abandoned several years ago. The...
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Full-text available
It is a presumption of many ecologists that the vegetation recovery of disturbed lands highly depends on the soil N-availability. High available-N inhibits expansion of natural vegetation while favourable for early-seral r-strategists. Experiments were design to test the applicability of nitrogen immobilization as means of accelerating the recovery...
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Full-text available
Cluster analysis and multidimensional scaling are used to revise the syntaxonomy of the Fagion illyricum alliance based on presence/absence data. The operational syntaxonomical units are associations and subassociations as suggested in the literature. The results of principal coordinates analysis and nonmetric multidimensional scaling are fairly co...
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Full-text available
The use of reference is fundamental to monitor and evaluate the success of restoration interventions. As global changes influence ecosystem composition, reference targets also change in time. Therefore the use of historical data provides deeper insights into long-term trends of ecosystem changes and helps determine realistic restoration goals. Larg...
Article
A korábban művelt, de felhagyott területek ökológiai helyreállítása gazdasági és ökológiai szempontból is kívánatos lenne. A homokpuszta gyepek restaurációjának módszereit a talajban zajló tápanyag-dinamikai és az azzal összefüggő mikrobiális tevékenységek szempontjából tanulmányoztuk. A kezelések célja a nitrogén immobilizációjának elősegítésén ke...

Projects

Projects (2)
Project
Examination of the effect of land use on biodiversity in regional scale. Description of the secondary succession of different habitats in a forest steppe region.