Imelda Somodi

Imelda Somodi
Hungarian Academy of Sciences | HAS · Institute of Ecology and Botany

PhD

About

41
Publications
9,010
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Introduction
My main research interest lies in long-term vegetation dynamics from within-community dynamics to the changes in the distribution of vegetation types at country extents. The current focus of my research activities lie in the modelling of potential natural vegetation (PNV) both at present and in the future under climate change.
Additional affiliations
October 2009 - June 2010
Eötvös Loránd University
Position
  • Research Assistant

Publications

Publications (41)
Article
Full-text available
The availability of robust and reliable spatial information on ecosystem condition is of increasing importance in informing conservation policy. Recent policy requirements have sparked a renewed interest in conceptual questions related to ecosystem condition and practical aspects like indicator selection, resulting in the emergence of conceptual fr...
Article
High-resolution ecosystem maps increase the efficiency of policy implementation. However due to challenges related to both data and methods, such maps of appropriate scale and quality are still rarely available for nationwide analyses. We present solutions to some typical challenges of national-scale ecosystem mapping through the new Ecosystem Map...
Article
Background : The concept of potential natural vegetation (PNV) embodies mature vegetation capable to survive under the environmental conditions of a site. Despite its widespread use, its applicability under the current level of human impacts on the environment has been criticised. Aims : We re-examine the original publication of the PNV concept an...
Article
Full-text available
Bioclimatic variables (BCVs) are routinely used in potential distribution models, typically without considering their calculation options in detail. We aimed at studying the impact of a decision, yet unexamined, on the calculation of BCVs, namely whether the identity of specific months/quarters in the calculation of BCVs should be updated for the f...
Article
Root‐hemiparasitic interaction between the dominant grass Calamagrostis epigejos and hemiparasitic Thesium linophyllon was studied to assess the potential of the parasite to regulate dominance of the grass expanding into species‐rich steppe grasslands. First, we aimed at identification of physiological links between the two species as a principal i...
Article
Full-text available
Climate change is expected to exert considerable influence on natural ecosystems all over the world, though not all ecosystems are equally vulnerable to the changes. In this paper, an assessment framework of vulnerability of natural habitats to future climate change is presented, examining Hungary, Central Eastern Europe as a case study. A climate...
Article
Full-text available
Several natural habitats are expected to be sensitive to climate, and their vulnerability to future climate change can be further increased by their insufficient capacity to adapt to the changes. Therefore, it is increasingly pressing to set up methodologies for assessing sensitivity and adaptive capacity of natural ecosystems for enhancing detaile...
Article
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...
Article
Questions Multiple Potential Natural Vegetation (MPNV) is a framework for the probabilistic and multilayer representation of potential vegetation in an area. How can an MPNV model be implemented and synthesized for the full range of vegetation types across a large spatial domain such as a country? What additional ecological and practical informatio...
Article
Full-text available
It has long been a concern that performance measures of species distribution models react to attributes of the modeled entity arising from the input data structure rather than to model performance. Thus, the study of Allouche et al. (Journal of Applied Ecology, 43, 1223, 2006) identifying the true skill statistics (TSS) as being independent of prev...
Article
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The main goal of this study is to assess the transferability of a species distribution model (SDM) for Robinia pseudacacia (black locust) to two testing sites in the Prekmurje region in northeast Slovenia. The predictive performance of the SDM at the testing sites was measured by 1) visual evaluation, 2) confusion matrix, 3) true positive rate (TPR...
Article
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Stylization is a common method of ornamental plant use that imitates nature and evokes the scenery. This paper discloses a not yet proposed aspect of stylization, since the method offers the possibility of preserving the physiognomy of those habitats that seem to vanish due to future climate change. In addition, novelty of the method is founded als...
Article
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In this paper, we elaborated a new concept (the Regularities-Deviations-Uniqueness; RDU framework) to analyse regional vegetation patterns and applied it to the Pannonian region of the Carpathian Basin. We introduced three criteria, namely: distributional regularity, distributional deviation, and compositional uniqueness. Regularities conform to th...
Article
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Recent research indicates that the soil microbial community, particularly arbuscular mycorrhizal fungi (AMF), can influence plant invasion in several ways. We tested if 1) invasive species are colonised by AMF to a lower degree than resident native species, and 2) AMF colonisation of native plants is lower in a community inhabited by an invasive sp...
Article
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We analyzed an ice disturbance event of deciduous forests in Hungary by Generalized Linear Models (GLM). Two statistical models were generated: the first model was based on a disturbance map created from a series of aerial photographs, and the second model was based on a map created by half-year-long intensive field work. The second map was conside...
Article
Monitoring the spread of invasive species is crucial for nature conservation; however regularity can only be assured if cost-effectiveness can be achieved. We aimed at testing low-cost remote sensing sources and simple methodology for recognising the invasive species Robinia pseudacacia and thus founding a monitoring scheme. A study area with mixed...
Article
In this paper, the concerns of Chiarucci et al. (2010) regarding use of the potential natural vegetation (PNV) concept are addressed, as voiced in the forum section of the Journal of Vegetation Science. First, we rectify some unfounded expectations concerning PNV, including a relationship with prehuman vegetation and phytosociology. Second, we poin...
Article
The interrelationship of soil and vegetation degradation is an emerging issue, where most studies have addressed severe degradation so far. We aimed at revealing changes in soil accompanying slight vegetation degradation in a case study involving xeromesophilous grasslands from Hungary. Slight degradation is of special interest here because the tar...
Article
Full-text available
In studies of vegetation dynamics, data points describing the changes are often sparse, because changes were not recognized in early stages or investigations were part of different projects. The snapshots at hand often leave the nature of the dynamics unrevealed and only give a rough estimation of the directions of changes. Extrapolation of the dyn...
Data
Appendix 2. Transition matrices estimated with a quantification of uncertainty of the estimation. Letters refer to vegetation types, for more information see Table 1.
Article
Full-text available
Robinia pseudacacia L. was introduced into Europe at the beginning of the 17th century and is now considered to be an invasive species also in Slovenia. Our study area was located in northeastern Slovenia, within the Prekmurje region. The aim of our study was to find explanations for the current occurrence pattern of the species in that location. A...
Book
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Már több mint egy évtizede segíti a magyarországi vegetációkutatást, élőhely-térképezést, monitorozást és a felsőoktatást az ÁNÉR-kézikönyv, amely a botanikusok egyik legfontosabb ökológiai kódexe. Az Általános Nemzeti Élőhely-osztályozási Rendszert (ÁNÉR) még a kilencvenes évek végén hozta létre az MTA Ökológiai és Botanikai Kutatóintézete, s napj...
Article
Full-text available
Biome interfaces are expected to exhibit chorological symmetry, i.e., decreasing trends in the number of species associated with each of the two neighbouring biomes as we progress from one into the other. Our aim was to test for such a pattern within the forest steppe biome, which is a transition zone in itself between the temperate deciduous fores...
Article
Variation in the explanatory potential of separate variable groups describing past vegetation patterns and/or abiotic environment were investigated using data from two points in time for three vegetation types, which are variants of the steppe grassland component of the forest steppe biome. First, we compared the predictive power of environmental v...
Article
Our contribution is part of the TransEcoNet project (Transnational Ecological Networks in Central Europe) that aims to investigate transboundary ecological networks across Central Europe. An objective of this project is to contribute towards awareness rising on the value and role of ecological networks. This poster presents the activities that are...
Article
Full-text available
Conservation treatments often take place at the scale of vegetation stands and affect within-stand heterogeneity and coexistence patterns of species first. Therefore, it is important to capture changes in these characteristics of vegetation to assess response to treatments early. We propose a method based on Juhász-Nagy's information theory models,...
Article
Question: How does the dominance of Calamagrostis epigejos influence species turnover of a grassland?Location: Loess grassland at the foothills of Bükk Mountains, Hungary (47°54’ N., 20°35’ E).Methods: Presence/absence of vascular plants and different performance attributes of C. epigejos were recorded in a plot-subplot system between 2002 and 2005...
Conference Paper
Full-text available
The condition of the natural and planted forests in the Pannonian basin has considerably changed and is in continuously changing due to the societal and political transition and economical changes in the involved countries. The (re)privatization of the forested areas, the energetic issues of renewable resources, and the increasing demand on wood by...
Article
Block clustering and seriation reveal the underlying structure of ecological data structures by rearranging the rows and the columns of the data table or data matrix, usually representing species and sample sites, respectively. Classical approaches to this problem rely upon a goodness criterion optimized through an iterative algorithm or utilize a...
Article
Floristic composition and vegetation succession were studied in relation to abiotic factors on secondarily developed young floating islands. These had formed after the reflooding of a drained wetland where mature floating fens had been present. We selected two floating fen Kis-Balaton Hungary complexes with similar physiognomy as references and per...
Article
Five-year and almost 20-year effects of the abandonment of a former pasture were investigated based on the comparison of three vegetation maps (1983, 1988, 2002) as a first step in a future hierarchical evaluation of the complex effects of this land use change on the vegetation. The grassland studied has been being composed of several stands (patch...
Article
Five-year and almost 20-year effects of the abandonment of a former pasture were investigated based on the comparison of three vegetation maps (1983, 1988, 2002) as a first step in a future hierarchical evaluation of the complex effects of this land use change on the vegetation. The grassland studied has been being composed of several stands (patch...