Levente Hufnagel

Levente Hufnagel
Szent István University, Godollo | szie · Institute of Crop Production

PhD ecology, PhD agricult, Dr habil agrotechn. sci

About

165
Publications
38,998
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1,415
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Introduction
Senior researcher and associate professor in ecology, biomathematics, and climate change with over 10 years of experience at leading Hungarian academic institutions. Editor-in-chief of an international scientific journal with impact factor. With 10 years of experience as forensic expert in ecology, conservation and agriculture. Homepage: http://mkk.szie.hu/~lhufnag/english/English_Hufnagel.htm
Additional affiliations
January 2007 - December 2011
Hungarian Academy of Sciences
Position
  • Senior Researcher
Description
  • Pure and applied ecology, modeling, monitoring and environmental science
January 2003 - present
Corvinus University of Budapest
Position
  • Professor (Associate)
Description
  • Ecology, climate change, biogeography, biomathematical methods, data-analysis and simulation modeling
January 1999 - December 2002
Hungarian Academy of Sciences
Position
  • junior research scientist
Description
  • Tropical Soil Ecology-Zoology
Education
September 2005
Corvinus University of Budapest
Field of study
  • Food Safety Engineer Specialist
September 1997
Eötvös Loránd University
Field of study
  • Hydrobiology, Zoology
September 1997
Szent István University, Godollo
Field of study
  • Plant protection, Agriculture

Publications

Publications (165)
Preprint
We modeled a foraminifera community collapse during Paleocene-Eocene Thermal Maximum with our temperature- and density-dependent model. Besides assessing our model, we investigated the pre-collapse pattern and the warning signals of the collapse with statistical indicators (relative species abundance, hierarchical cluster analysis, principal compon...
Chapter
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For a long time, researchers have compared light traps operating with different light sources. According to the results, ultraviolet lights often performed better than visible light sources. In the present study, we examine the wingspan of macrolepidoptera species in relation to the catch result of visible (visible) and BL traps in choice and no-ch...
Article
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We studied the patterns of pre-collapse communities, the small-scale and the large-scale signals of collapses, and the environmental events before the collapses using four paleoecological and one modern data series. We applied and evaluated eight indicators in our analysis: the relative abundance of species, hierarchical cluster analysis, principal...
Article
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Grasslands of middle mountain regions are among the most diverse habitats of the Carpathian Basin, but they are threatened by spontaneous succession leading to woody encroachment. It is a high priority of nature conservation to preserve these diverse habitats by suppressing the woody encroachment and to create new open habitat patches by scrub remo...
Article
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Due to the projected climate change, the living territory of wild animals may be reshaped in the future, some of the species may even suffer extinction. The aim of this research is to make a comparative case study for the future predictions of the European terrestrial mammals’ vulnerability to the climate change, by using their current range area m...
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Several organism communities serve as ecological and environmental indicators to detect changes in human-impacted habitats. However, the composition of indicator communities may vary because of natural variation in addition to the changes associated with human disturbances. This meta-analysis compared the natural variation of oribatid mite assembla...
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The common carp (Cyprinus carpio) is a highly invasive species and an ecological engineer. It has been repeatedly shown to increase nutrient concentrations and phytoplankton biomass while destroying submerged macrophytes, although there are few studies from the Mediterranean region. We studied its impact on the zooplankton community in Laguna de Me...
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The soil and climatic conditions of southeast Kazakhstan are favorable for growing sufficient amounts of agricultural crops, including vegetables. Kazakhstan was on the bottom line in terms of water supply among the post-Soviet countries before it became an independent state. Therefore, among recent tendencies there is a shortage of irrigation wate...
Data
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The soil and climatic conditions of south-east Kazakhstan are favorable for growing sufficient amounts of agricultural crops, including vegetables. Kazakhstan was on the bottom line in terms of water supply among the post-Soviet countries before it became an independent state. Therefore, among recent tendencies there is a shortage of irrigation wat...
Article
Many studies have investigated whether microbiota has been adapted to decompose a given litter type but we have limited information about the specific role of microarthropods in litter decaying processes. This experiment studied functional redundancy of microarthropods in a litter decomposition system by interchanging mesofauna among three differen...
Article
We investigated the associations between heart rate variability (HRV) parameters and some housing- and individual-related variables using the canonical correspondence analysis (CCOA) method in lactating Holstein-Friesian dairy cows. We collected a total of 5200 5-min interbeat interval (IBI) samples from 260 animals on five commercial dairy farms [...
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Faced with society’s increasing expectations, the European Union’s Common Agricultural Policy uses environmental management as an increasingly critical criterion in the allocation of farm subsidies, with a shift in focus from production and area-based subsidies to payments for supplying public goods. There is an increasing demand to assess the ecol...
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Global patterns of organisms have long been investigated by calculating the (dis)similarity among geographical units followed by multivariate analysis. Beta-diversity-related structural characteristics of world-scale data, such as nestedness or species replacement may also be considered as an additional tool in revealing distributional patterns mor...
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Our knowledge of the assembly processes of species-rich oribatid mite communities is fairly limited. Also, very little information is available on the effects of habitat factors on these processes. In this paper, the role of litter quality in pattern formation was investigated in a microcosm experiment using the “home-field advantage” approach. Nat...
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The aim of the study is to provide a survey on the history of ragweed worldwide. Its climate dependence, impacts in agriculture, health effects and social costs are also presented. In Europe common ragweed (Ambrosia artemisiifolia) is predominant of all Ambrosia species that is supported by population genetic data. The most important habitat areas...
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Surveys aiming at analysing spatial and temporal changes of the fish stock of Lake Balaton have an almost 100 year history. Drastically low water levels which could be observed in the past years and which were most probably caused by global climate change provide a good reason to study population dynamic changes induced by water level fluctuations....
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A solid body of empirical, experimental and theoretical evidence accumulated over recent years indicated that freshwater plankton experienced advance in phenology in response to climate change. Despite rapidly growing evidence for phenological changes, we still lack a comprehensive understanding of how climate change alters plankton phenology in fr...
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After giving an overview of climate change induced vegetation shifts in the Palearctic region in our previous paper, in this article we review literature available in Web of Science on North and South America. We study different geographical regions such as Canada, Alaska, California, Southwestern, Eastern and Southeastern USA, the Great Lakes regi...
Chapter
Despite rapidly growing insights into zooplankton spatio-temporal dynamics in lotic environments, syntheses of prior case studies have not yet been given much effort. We aimed to assemble the pieces of some of our previous case studies performed in the Danube River and to put all those findings into a more coherent framework. These studies do not c...
Article
Full-text available
After giving an overview of climate change induced vegetation shifts in the Palearctic region in our previous paper, in this article we review literature available in Web of Science on North and South America. We study different geographical regions such as Canada, Alaska, California, Southwestern, Eastern and Southeastern USA, the Great Lakes regi...
Article
Full-text available
Abstract. In the last decade several researchers found relation between the wingspan size of moths and their light sensitivity. Generally, moths with larger wingspan have higher light sensitivity. We tested these findings using the catch data of 378 Macrolepidoptera species from 19 black light (BL, 125 W) and normal light trap (100 W) pairs of the...
Article
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The change of ambient temperature plays a key role in determining the run of the annual Lyme season. Our aim was to explain the apparent contradiction between the annual unimodal Lyme borreliosis incidence and the bimodal Ixodes ricinus tick activity run – both observed in Hungary – by distinguishing the temperaturedependent seasonal human and tick...
Conference Paper
Full-text available
Climate is one of the abiotic factors, which controls primarily the range areas of wildlife. Animals tend to occupy geographical regions with climatic conditions, which are optimal to their specific needs. Due to the projected global warming and climate change the living territory of wild animals' may be reshaped in the future, some of the species...
Article
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In this paper the Hungarian light trap data (1973-93) of Operophtera brumata, L., an important pest in forestry and horticulture are analysed. The life cycle of the Lepidoptera is introduced and the activity of the pests is estimated. We prove that the gradation of the pests has the same periodicity as sunspot cycle has, the gradation peak as feedb...
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Rainforests are situated at low latitude where forests enjoy steady and strong radiation. Biodiversity in rainforests has been very high, for historical and climatic reasons. The number of species is very high and tends to increase with precipitation and decrease with seasonality. Disturbance, soil fertility and forest stature also influence the sp...
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Abstract. Rainforests are situated at low latitude where forests enjoy steady and strong radiation. Biodiversity in rainforests has been very high, for historical and climatic reasons. The number of species is very high and tends to increase with precipitation and decrease with seasonality. Disturbance, soil fertility and forest stature also influe...
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Abstract. Global average temperature has increased and precipitation pattern has altered over the past 100 years due to increases in greenhouse gases. These changes will alter numerous site factors and biochemical processes of vegetative communities such as nutrient and water availability, permafrost thawing, fire regime, biotic interactions and in...
Article
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Our study intended to explore the potential distribution shif of Phlebotomus ariasi, P. neglectus, P. perfiliewi, P. perniciosus, and P. tobbi, and some other sand fly species: P. papatasi, P. sergenti, and P. similis. We used climate envelope modeling (CEM) method to determine the ecological requirements of the species and to model the potential d...
Book
Full-text available
Hufnagel L, Sipkay Cs (szerk) (2012): A klímaváltozás hatása ökológiai folyamatokra és közösségekre – Budapesti Corvinus Egyetem, Budapest (1-530 oldal) ISBN 978-963-503-511-3
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Recently, major advances in the climate–zooplankton interface have been made some of which appeared to receive much attention in a broader audience of ecologists as well. In contrast to the marine realm, however, we still lack a more holistic summary of recent knowledge in freshwater. We discuss climate change-related variation in physical and biol...
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This study investigates how yellow bluestem affects biodiversity in a typical Pannonian grassland. Beta diversity (i.e. the finescale spatial variability of species compositions), was estimated by the realized number of species combinations sampled at various scales. Sampling was performed by a standard protocol. Presences of plant species were rec...
Article
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Abstract. When examining the ecological effects of climate change those databases which contain monitoring results of long-term time series have a key role. We used the daily Lepidoptera data of the Hungarian Plant Protection and Forestry Light Trap Network between 1962 and 2006 to analyse the influence of the change of temperature on the ecologica...
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Abstract. The species composition, longitudinal distribution and seasonal dynamics of zooplankton were studied in the Zagyva River, Hungary. A total of 108 taxa was recorded from which 61 were new for the river. Rotatoria was the most abundant group, microcrustaceans were less important, only nauplii and copepodites were represented in similar indi...
Article
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Abstract. Examined area can be found at Balaton Uplands National Park (Hungary). 5 sample areas were examined in Badacsonytördemic: 1: 32 hectare under-grazed pasture, 2: 38 hectare overgrazed pasture, 3: 34 hectare hayfield, 4: trampled area, 5: beaten track. Livestock population was 118 in the monitored pastures. Sampling was executed along five...
Chapter
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Applicability of Oribatid mites as an indicator group has been emphasized by researchers for several decades. These organisms possess such kind of extraordinary characteristics by which (considered even separately or as a whole) they are able to indicate different changes in their environment. Oribatid mites can be found in almost every kind of hab...
Article
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Abstract. In this paper the projected future impact of climate change has been analyzed for the quality of living conditions of the European terrestrial vertebrates (amphibians, reptiles, birds, mammals) in the Carpathian Basin. According to the climate scenarios, warmer and drier climatic conditions are likely to occur in the Carpathian Basin by e...
Article
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Ecological models have often been used in order to answer questions that are in the limelight of recent researches such as the possible effects of climate change. The methodology of tactical models is a very useful tool comparison to those complex models requiring relatively large set of input parameters. In this study, a theoretical strategic mode...
Article
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Animals tend to occupy geographical regions with climatic conditions, which are optimal to the specific needs of the given species. _Due to the projected global warming and climate change the wild animals' living territory may be reshaped in the future. In this research we aim to estimate the regional impacts of climate change to the European terre...
Article
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Abstract. Environmental protectionism and sustainable development has been gaining increased attention among governments, investors and consumers alike. As a result, firms are facing growing pressure from the various stakeholders to improve their environmental performance. This study is focusing on the food industry, which in recent years has been...
Article
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Összefoglalás. A Tápió–Hajta Vidék Tájvédelmi Körzet területén fekszik a farmosi Nagy-nádas, melyet minden tavasszal több tízezer kétéltűpéldány keres fel. A közúton való átkelés miatti tömeges pusztulás megakadályozására először 2007-ben létesült ideiglenes terelőkerítés, mintegy 1,5 km hoszszan, azóta minden év tavaszán folyamatosan zajlik a ment...
Chapter
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Genealógia és humánökológia Az ökológia az élőlény-együttesek tér-és időbeli eloszlásának okait és a változások ha-tótényezőit vizsgáló tudomány, amely a biológiai tudományok egy jól körülhatárolt szak-területe. Amikor humánökológiáról beszélünk, akkor látszólag ennek a szűk szaktudo-mánynak egy még szűkebb – a kb. 1,9 millió leírt élőlényfajból ki...
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A klímaváltozás ökológiai hatásainak elemzésével kapcsolatos tudományos eredményeink megközelítési módjukat tekintve az alábbi hat fő csoportba oszthatók: 1. Az elméleti várakozások tisztázása stratégiai modellezéssel. 2. Lehetséges hatások mértékének behatárolása Magyarország vonatkozásában, földrajzi analógiai megközelítéssel. 3. Nagy monitoring...
Article
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Oribatid mites are one of the most abundant and species rich group in soil mesofauna. In spite of this, we have limited knowledge on the role they play in ecological processes. Since they are small like other mesofauna members and live a hidden life, their observation is difficult. Their life style, interactions with other organisms and role in soi...
Article
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Abstract. In this review, the impacts of climate change on Lepidoptera species and communities are summarized, regarding already registered changes in case of individual species and assemblies, and possible future effects. These include changes in abundance, distribution ranges (altitude above sea level, geographical distribution), phenology (earli...
Article
Full-text available
Setting out from the database of Operophtera brumata, L. in between 1973 and 2000 due to the Light Trap Network in Hungary, we introduce a simple theta-logistic population dynamical model based on endogenous and exogenous factors, only. We create an indicator set from which we can choose some elements with which we can improve the fitting results t...