Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Classification of European and Mediterranean coastal dune vegetation
Marcenò, Corrado ; Guarino, Riccardo ; Loidi, Javier ; Herrera, Mercedes ; Isermann, Maike ; Knollová, Ilona ; Tichý, Lubomír ; Tzonev, Rossen T. ; Acosta, Alicia Teresa Rosario ; Fitzpatrick, Úna ; Iakushenko, Dmytro ; Janssen, John A.M. ; Jiménez-Alfaro, Borja ; Kacki, Zygmunt ; Keizer-Sedláková, Iva ; Kolomiychuk, Vitaliy ; Rodwell, John S. ; Schaminée, Joop H.J. ; Šilc, Urban ; Chytrý, Milan - \ 2018
Applied Vegetation Science 21 (2018)3. - ISSN 1402-2001 - p. 533 - 559.
Ammophiletea - Biogeography - Expert system - Honckenyo-Elymetea - Koelerio-Corynephoretea canescentis - Phytosociology - Sand dune - Vegetation classification

Aims: Although many phytosociological studies have provided detailed local and regional descriptions of coastal dune vegetation, a unified classification of this vegetation in Europe and the Mediterranean Basin has been missing. Our aim is to produce a formalized classification of this vegetation and to identify the main factors driving its plant species composition at a continental scale. Location: Atlantic and Baltic coasts of Europe, Mediterranean Basin and the Black Sea region. Methods: We compiled a database of 30,759 plots of coastal vegetation, which were resampled to reduce unbalanced sampling effort, obtaining a data set of 11,769 plots. We classified these plots with TWINSPAN, interpreted the resulting clusters and used them for developing formal definitions of phytosociological alliances of coastal dune vegetation, which were included in an expert system for automatic vegetation classification. We related the alliances to climatic factors and described their biogeographic features and their position in the coastal vegetation zonation. We examined and visualized the floristic relationships among these alliances by means of DCA ordination. Results: We defined 18 alliances of coastal dune vegetation, including the newly described Centaureo cuneifoliae-Verbascion pinnatifidi from the Aegean region. The main factors underlying the differentiation of these alliances were biogeographic and macroclimatic contrasts between the Atlantic-Baltic, Mediterranean and Black Sea regions, along with ecological differences between shifting and stable dunes. The main difference in species composition was between the Atlantic-Baltic and Mediterranean-Black Sea regions. Within the former region, the main difference was driven by the different ecological conditions between shifting and stable dunes, whereas within the latter, the main difference was biogeographic between the Mediterranean and the Black Sea. Conclusions: The first formal classification of the European coastal dune vegetation was established, accompanied by an expert system containing the formal definitions of alliances, which can be applied to new data sets. The new classification system critically revised the previous concepts and integrated them into a consistent framework, which reflects the main gradients in species composition driven by biogeographic influences, macroclimate and the position of the sites in the coast-inland zonation of the dune systems. A revision of the class concept used in EuroVegChecklist is also proposed.

Biogeographic variability of coastal perennial grasslands at the European scale
Vecchio, S. Del; Fantinato, E. ; Janssen, J.A.M. ; Bioret, F. ; Acosta, A. ; Prisco, I. ; Tzonev, R. ; Marcenò, C. ; Rodwell, J. ; Buffa, G. - \ 2018
Applied Vegetation Science 21 (2018)2. - ISSN 1402-2001 - p. 312 - 321.
Azonal habitats - Climatic gradient - Dune habitats - Endemism - Habitat classification - Meta-analysis - Phytosociological data - Vegetation gradient - Vegetation structure
Question: Coastal environments have often been described as azonal. While this characteristic is clear for the foredune system, it seems less evident for more inland fixed dunes, which host habitats of major conservation concern, whose features seem to be more related to local climatic conditions. We hypothesized that, unlike other coastal habitats, dune perennial grasslands differ floristically and structurally across their European range and that patterns of variation are linked to the corresponding climate. Location: European coasts (Atlantic Ocean, Baltic, Mediterranean, Black Sea). Methods: We used a large data set of phytosociological relevés, representative of coastal grasslands throughout their European range. The role of climatic variables (temperature, precipitation and continentality) in determining the variability in species composition and vegetation structure (by means of life forms) was investigated through CCA, DCA and GLM. The degree of concentration of species occurrences within groups was calculated through the Phi coefficient. Results: Through multivariate analyses we identified seven major types of coastal grassland, corresponding to different geographic areas. The groups significantly differed in their climatic envelope, as well as in their species composition and community structure. Conclusion: Our results confirm the hypothesis that coastal dune perennial grasslands are subjected to local climate, which exerts significant effects on both floristic composition and community structure. As a consequence, coastal grasslands are particularly prone to the effect of possible climate change, which may alter species composition and distribution, and lead to shifts in the distribution of native plant communities.
Classification of European beech forests : a Gordian Knot?
Willner, Wolfgang ; Jiménez-Alfaro, Borja ; Agrillo, Emiliano ; Biurrun, Idoia ; Campos, Juan Antonio ; Čarni, Andraž ; Casella, Laura ; Csiky, János ; Ćušterevska, Renata ; Didukh, Yakiv P. ; Ewald, Jörg ; Jandt, Ute ; Jansen, Florian ; Kącki, Zygmunt ; Kavgacı, Ali ; Lenoir, Jonathan ; Marinšek, Aleksander ; Onyshchenko, Viktor ; Rodwell, John S. ; Schaminée, Joop H.J. ; Šibík, Jozef ; Škvorc, Željko ; Svenning, Jens Christian ; Tsiripidis, Ioannis ; Turtureanu, Pavel Dan ; Tzonev, Rossen ; Vassilev, Kiril ; Venanzoni, Roberto ; Wohlgemuth, Thomas ; Chytrý, Milan - \ 2017
Applied Vegetation Science 20 (2017)3. - ISSN 1402-2001 - p. 494 - 512.
Beech forest - Europe - Fagetalia sylvaticae - Fagion sylvaticae - Fagus sylvatica - Luzulo-Fagion sylvaticae - Syntaxonomy - TWINSPAN - Vegetation plot database

Questions: What are the main floristic patterns in European beech forests? Which classification at the alliance and suballiance level is the most convincing?. Location: Europe and Asia Minor. Methods: We applied a TWINSPAN classification to a data set of 24 605 relevés covering the whole range of Fagus sylvatica forests and the western part of Fagus orientalis forests. We identified 24 ‘operational phytosociological units’ (OPUs), which were used for further analysis. The position of each OPU along the soil pH and temperature gradient was evaluated using Ellenberg Indicator Values. Fidelity of species to OPUs was calculated using the phi coefficient and constancy ratio. We compared alternative alliance concepts, corresponding to groups of OPUs, in terms of number and frequency of diagnostic species. We also established formal definitions for the various alliance concepts based on comparison of the total cover of the diagnostic species groups, and evaluated alternative geographical subdivisions of beech forests. Results: The first and second division levels of TWINSPAN followed the temperature and soil pH gradients, while lower divisions were mainly geographical. We grouped the 22 OPUs of Fagus sylvatica forests into acidophytic, meso-basiphytic and thermo-basiphytic beech forests, and separated two OPUs of F. orientalis forests. However, a solution with only two ecologically defined alliances of F. sylvatica forests (acidophytic vs basiphytic) was clearly superior with regard to number and frequency of diagnostic species. In contrast, when comparing groupings with three to six geographical alliances of basiphytic beech forests, respectively, we did not find a strongly superior solution. Conclusions: We propose to classify F. sylvatica forests into 15 suballiances – three acidophytic and 12 basiphytic ones. Separating these two groups at alliance or order level was clearly supported by our results. Concerning the grouping of the 12 basiphytic suballiances into ecological or geographical alliances, as advocated by many authors, we failed to find an optimal solution. Therefore, we propose a multi-dimensional classification of basiphytic beech forests, including both ecological and geographical groups as equally valid concepts which may be used alternatively depending on the purpose and context of the classification.

Balkan Vegetation Database : Historical background, current status and future perspectives
Vassilev, Kiril ; Pedashenko, Hristo ; Alexandrova, Alexandra ; Tashev, Alexandar ; Ganeva, Anna ; Gavrilova, Anna ; Gradevska, Asya ; Assenov, Assen ; Vitkova, Antonina ; Grigorov, Borislav ; Gussev, Chavdar ; Filipova, Eva ; Aneva, Ina ; Knollová, Ilona ; Nikolov, Ivaylo ; Georgiev, Georgi ; Gogushev, Georgi ; Tinchev, Georgi ; Pachedjieva, Kalina ; Koev, Koycho ; Lyubenova, Mariyana ; Dimitrov, Marius ; Apostolova-Stoyanova, Nadezhda ; Velev, Nikolay ; Zhelev, Petar ; Glogov, Plamen ; Natcheva, Rayna ; Tzonev, Rossen ; Boch, Steffen ; Hennekens, Stephan M. ; Georgiev, Stoyan ; Stoyanov, Stoyan ; Karakiev, Todor ; Kalníková, Veronika ; Shivarov, Veselin ; Russakova, Veska ; Vulchev, Vladimir - \ 2016
Phytocoenologia 46 (2016)1. - ISSN 0340-269X - p. 89 - 95.
Balkan Peninsula - Data property and governance rules - Phytosociology - TURBOVEG - Vegetation plot - Vegetation type

The Balkan Vegetation Database (BVD; GIVD ID: EU-00-019; 019) is a regional database that consists of phytosociological relevés from different vegetation types from six countries on the Balkan Peninsula (Albania, Bosnia and Herzegovina, Bulgaria, Kosovo, Montenegro and Serbia). Currently, it contains 9,580 relevés, and most of them (78%) are geo-referenced. The database includes digitized relevés from the literature (79%) and unpublished data (21%). Herein we present descriptive statistics about attributive relevé information. We developed rules that regulate governance of the database, data provision, types of data availability regimes, data requests and terms of use, authorships and relationships with other databases. The database offers an extensive overview about studies on the local, regional and SE European levels including information about flora, vegetation and habitats.

Guidelines for assessing favourable conservation status of Natura 2000 species and habitat types in Bulgaria
Zingstra, H.L. ; Kovachev, A. ; Kitnaes, K. ; Tzonev, R. ; Dimova, D. ; Tzvetkov, P. - \ 2009
Sofia, Bulgaria : Bulgarian Biodiversity Foundation - ISBN 9789549959499 - 13 p.
This executive summary describes the methodology for assessing the favourable conservation status of N2000 habitats and species on site level in Bulgaria and gives guidelines for its application. The methodology was developed in the frame of the BBI/Matra project 2006/014 “Favourable Conservation Status of Natura 2000 Habitat types and Species in Bulgaria”. The project was generously supported by the Dutch government under the BBI/Matra programme, which is a combination of two international policy programs of the Dutch government. The objectives and financial resources of the BBI/Matra Programme fall within the remit of the Matra Social Transformation Program of the Ministry of Foreign Affairs and under the International Policy Program on Biodiversity of the Ministry of Agriculture, Nature and Food Quality.
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