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15 results on '"european vegetation survey"'

1. Checklist of vegetation classes of Bosnia and Herzegovina: How much do we know?

Author

Milanović, Đorđije and Stupar, Vladimir

Subjects
FOREST ecology, BOTANY, FOREST plants, GREY literature, PLANTS
Abstract

Copyright of Works of the Faculty of Forestry University of Sarajevo is the property of Faculty of Forestry University of Sarajevo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2019
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2. First Report of the European Vegetation Classification Committee (EVCC).

Author

Biurrun, Idoia and Willner, Wolfgang

Subjects
FORESTS & forestry, VEGETATION & climate, PLANT communities, VEGETATION classification, PHYSIOGNOMY
Abstract

The European Vegetation Classification Committee (EVCC) was established in 2017 by the European Vegetation Survey to maintain and update a standard phytosociological classification of European vegetation. Vegetation scientists can send proposals for modification of specific parts of the EuroVegChecklist, which is used as a baseline. The proposals are accepted or rejected based on recommendations issued by a specialist group and after voting by EVCC members. Here we report the results of the first voting, which took place from 4 June to 4 July 2020. EVCC members voted on the recommendations issued for three proposals of change concerning spring and dune vegetation, and mediterranean grasslands. As a result, EVCC accepted to modify the classes Ammophiletea and Helichryso-Crucianelletea, but rejected to include the alliance Philonotidion seriatae and the class Charybdido pancratii-Asphodeletea ramosi. These rejections are not final, and similar proposals can be submitted again with new data supporting the proposed changes. [ABSTRACT FROM AUTHOR]

Published
2020
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3. First Report of the European Vegetation Classification Committee (EVCC)

Author

Wolfgang Willner and Idoia Biurrun

Subjects
0106 biological sciences, lcsh:GE1-350, media_common.quotation_subject, Vegetation classification, phytosociology, Library science, EVCC, European Vegetation Survey, 010603 evolutionary biology, 01 natural sciences, EuroVegChecklist, Geography, Voting, medicine, order, syntaxonomy, medicine.symptom, Vegetation (pathology), Baseline (configuration management), class, lcsh:Environmental sciences, 010606 plant biology & botany, media_common, Alliance
Abstract

The European Vegetation Classification Committee (EVCC) was established in 2017 by the European Vegetation Survey to maintain and update a standard phytosociological classification of European vegetation. Vegetation scientists can send proposals for modification of specific parts of the EuroVegChecklist, which is used as a baseline. The proposals are accepted or rejected based on recommendations issued by a specialist group and after voting by EVCC members. Here we report the results of the first voting, which took place from 4 June to 4 July 2020. EVCC members voted on the recommendations issued for three proposals of change concerning spring and dune vegetation, and mediterranean grasslands. As a result, EVCC accepted to modify the classes Ammophiletea and Helichryso-Crucianelletea, but rejected to include the alliance Philonotidion seriatae and the class Charybdido pancratii-Asphodeletea ramosi. These rejections are not final, and similar proposals can be submitted again with new data supporting the proposed changes. Abbreviations: EVCC = European Vegetation Classification Committee; SG = Specialist Group.

Published
2020

4. Vegetation of Europe: hierarchical floristic classification system of vascular plant, bryophyte, lichen, and algal communities.

Author

Mucina, Ladislav, Bültmann, Helga, Dierßen, Klaus, Theurillat, Jean-Paul, Raus, Thomas, Čarni, Andraž, Šumberová, Kateřina, Willner, Wolfgang, Dengler, Jürgen, García, Rosario Gavilán, Chytrý, Milan, Hájek, Michal, Di Pietro, Romeo, Iakushenko, Dmytro, Pallas, Jens, Daniëls, Fred J.A., Bergmeier, Erwin, Santos Guerra, Arnoldo, Ermakov, Nikolai, and Valachovič, Milan

Subjects
*BOTANY, *CONSERVATION of natural resources, *LAND management, *BRYOPHYTES, *VASCULAR plants, *VEGETATION classification
Abstract

Aims Vegetation classification consistent with the Braun-Blanquet approach is widely used in Europe for applied vegetation science, conservation planning and land management. During the long history of syntaxonomy, many concepts and names of vegetation units have been proposed, but there has been no single classification system integrating these units. Here we (1) present a comprehensive, hierarchical, syntaxonomic system of alliances, orders and classes of Braun-Blanquet syntaxonomy for vascular plant, bryophyte and lichen, and algal communities of Europe; (2) briefly characterize in ecological and geographic terms accepted syntaxonomic concepts; (3) link available synonyms to these accepted concepts; and (4) provide a list of diagnostic species for all classes. Location European mainland, Greenland, Arctic archipelagos (including Iceland, Svalbard, Novaya Zemlya), Canary Islands, Madeira, Azores, Caucasus, Cyprus. Methods We evaluated approximately 10 000 bibliographic sources to create a comprehensive list of previously proposed syntaxonomic units. These units were evaluated by experts for their floristic and ecological distinctness, clarity of geographic distribution and compliance with the nomenclature code. Accepted units were compiled into three systems of classes, orders and alliances (EuroVegChecklist, EVC) for communities dominated by vascular plants ( EVC1), bryophytes and lichens ( EVC2) and algae ( EVC3). Results EVC1 includes 109 classes, 300 orders and 1108 alliances; EVC2 includes 27 classes, 53 orders and 137 alliances, and EVC3 includes 13 classes, 24 orders and 53 alliances. In total 13 448 taxa were assigned as indicator species to classes of EVC1, 2087 to classes of EVC2 and 368 to classes of EVC3. Accepted syntaxonomic concepts are summarized in a series of appendices, and detailed information on each is accessible through the software tool EuroVegBrowser. Conclusions This paper features the first comprehensive and critical account of European syntaxa and synthesizes more than 100 yr of classification effort by European phytosociologists. It aims to document and stabilize the concepts and nomenclature of syntaxa for practical uses, such as calibration of habitat classification used by the European Union, standardization of terminology for environmental assessment, management and conservation of nature areas, landscape planning and education. The presented classification systems provide a baseline for future development and revision of European syntaxonomy. [ABSTRACT FROM AUTHOR]

Published
2016
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5. European Vegetation Archive (EVA): an integrated database of European vegetation plots.

Author

Chytrý, Milan, Hennekens, Stephan M., Jiménez‐Alfaro, Borja, Knollová, Ilona, Dengler, Jürgen, Jansen, Florian, Landucci, Flavia, Schaminée, Joop H.J., Aćić, Svetlana, Agrillo, Emiliano, Ambarlı, Didem, Angelini, Pierangela, Apostolova, Iva, Attorre, Fabio, Berg, Christian, Bergmeier, Erwin, Biurrun, Idoia, Botta‐Dukát, Zoltán, Brisse, Henry, and Campos, Juan Antonio

Subjects
*COMPUTER network resources, *PLANTING, *PLANTING design, *PLANT taxonomists, *RESEARCH institutes
Abstract

The European Vegetation Archive (EVA) is a centralized database of European vegetation plots developed by the IAVS Working Group European Vegetation Survey. It has been in development since 2012 and first made available for use in research projects in 2014. It stores copies of national and regional vegetationplot databases on a single software platform. Data storage in EVA does not affect on-going independent development of the contributing databases, which remain the property of the data contributors. EVA uses a prototype of the database management software TURBOVEG 3 developed for joint management of multiple databases that use different species lists. This is facilitated by the Syn-BioSys Taxon Database, a system of taxon names and concepts used in the individual European databases and their corresponding names on a unified list of European flora. TURBOVEG 3 also includes procedures for handling data requests, selections and provisions according to the approved EVA Data Property and Governance Rules. By 30 June 2015, 61 databases from all European regions have joined EVA, contributing in total 1 027 376 vegetation plots, 82% of them with geographic coordinates, from 57 countries. EVA provides a unique data source for large-scale analyses of European vegetation diversity both for fundamental research and nature conservation applications. Updated information on EVA is available online at http://euroveg.org/eva-database. [ABSTRACT FROM AUTHOR]

Published
2016
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6. Vegetation of Europe: hierarchical floristic classification system of vascular plant, bryophyte, lichen, and algal communities

Author

Heinrich E. Weber, Fred J.A. Daniëls, Rosario Gavilán García, Andraž Čarni, Thomas Raus, Jürgen Dengler, Jean-Paul Theurillat, Romeo Di Pietro, Nikolai Ermakov, Yakiv Didukh, Helga Bültmann, Jorge Capelo, Milan Valachovič, Joop H.J. Schaminée, Erwin Bergmeier, Arnoldo Santos Guerra, Ayzik Solomeshch, Panayotis Dimopoulos, Klaus Dierßen, Stephan M. Hennekens, Ladislav Mucina, Tatiana Lysenko, Milan Chytrý, Kateřina Šumberová, Michal Hájek, Sandro Pignatti, Wolfgang Willner, Dmytro Iakushenko, Carlos Aguiar, Jens Pallas, Lubomír Tichý, John S. Rodwell, and Peet, Robert

Subjects
0106 biological sciences, Vascular plant communities, Syntaxonomy, Vegetation classification, Bos- en Landschapsecologie, Plant Ecology and Nature Conservation, European Vegetation Survey, Management, Monitoring, Policy and Law, International Code of Phytosociological Nomenclature, 010603 evolutionary biology, 01 natural sciences, Zonal vegetation, EuroVegChecklist, Taxonomy (general), media_common.cataloged_instance, Forest and Landscape Ecology, Sociology, European union, Thallophyte vegetation, Nomenclature, Vegetatie, Nature and Landscape Conservation, media_common, Alliance, Algal communities, Azonal vegetation, Bryophyte communities, Class, Lichen communities, Order, Vegetation, Ecology, algal communities, alliance, azonal vegetation, bryophyte communities, class, european vegetation survey, euroVegChecklist, International code of phytosociological nomenclature, lichen communities, order, syntaxonomy, thallophyte vegetation, vascular plant communities, vegetation classification, zonal vegetation, ecology, nature and landscape conservation, management, monitoring, policy and law, business.industry, Plant community, 15. Life on land, PE&RC, Taxon, Plantenecologie en Natuurbeheer, Vegetatie, Bos- en Landschapsecologie, Vegetation, Forest and Landscape Ecology, business, Landscape planning, 010606 plant biology & botany
Abstract

Vegetation classification consistent with the Braun-Blanquet approach is widely used in Europe for applied vegetation science, conservation planning and land management. During the long history of syntaxonomy, many concepts and names of vegetation units have been proposed, but there has been no single classification system integrating these units. Here we (1) present a comprehensive, hierarchical, syntaxonomic system of alliances, orders and classes of Braun-Blanquet syntaxonomy for vascular plant, bryophyte and lichen, and algal communities of Europe; (2) briefly characterize in ecological and geographic terms accepted syntaxonomic concepts; (3) link available synonyms to these accepted concepts; and (4) provide a list of diagnostic species for all classes. Location: European mainland, Greenland, Arctic archipelagos (including Iceland, Svalbard, Novaya Zemlya), Canary Islands, Madeira, Azores, Caucasus, Cyprus. Methods: We evaluated approximately 10 000 bibliographic sources to create a comprehensive list of previously proposed syntaxonomic units. These units were evaluated by experts for their floristic and ecological distinctness, clarity of geographic distribution and compliance with the nomenclature code. Accepted units were compiled into three systems of classes, orders and alliances (EuroVegChecklist, EVC) for communities dominated by vascular plants (EVC1), bryophytes and lichens (EVC2) and algae (EVC3). Results: EVC1 includes 109 classes, 300 orders and 1108 alliances; EVC2 includes 27 classes, 53 orders and 137 alliances, and EVC3 includes 13 classes, 24 orders and 53 alliances. In total 13 448 taxa were assigned as indicator species to classes of EVC1, 2087 to classes of EVC2 and 368 to classes of EVC3. Accepted syntaxonomic concepts are summarized in a series of appendices, and detailed information on each is accessible through the software tool EuroVegBrowser. Conclusions: This paper features the first comprehensive and critical account of European syntaxa and synthesizes more than 100 yr of classification effort by European phytosociologists. It aims to document and stabilize the concepts and nomenclature of syntaxa for practical uses, such as calibration of habitat classification used by the European Union, standardization of terminology for environmental assessment, management and conservation of nature areas, landscape planning and education. The presented classification systems provide a baseline for future development and revision of European syntaxonomy. info:eu-repo/semantics/publishedVersion

Published
2016

7. European Vegetation Archive (EVA): an integrated database of European vegetation plots

Author

Ioannis Tsiripidis, Dmytro Dubyna, Emin Uğurlu, Federico Fernández-González, Svetlana Aćić, Valerijus Rašomavičius, Anna Kuzemko, Jiří Danihelka, Wolfgang Willner, Christian Berg, Mirjana Ćuk, Pavel Dan Turtureanu, Erwin Bergmeier, Aaron Pérez-Haase, Vadim Prokhorov, Deniz Işık Gürsoy, Zoltán Botta-Dukát, Hristo Pedashenko, John Janssen, Martin Kleikamp, Thomas Wohlgemuth, Martin Jiroušek, S. M. Yamalov, Viktor Onyshchenko, Ilona Knollová, Urban Šilc, Jörg Ewald, Henry Brisse, Xavier Font, Didem Ambarlı, John S. Rodwell, Andraž Čarni, Tatiana Rogova, Lynda Weekes, Solvita Rūsiņa, Gunnar Seidler, Tetiana Dziuba, Milan Chytrý, Desislava Sopotlieva, Risto Virtanen, Nikolai Ermakov, Riccardo Guarino, Maria Pilar Rodríguez-Rojo, Florian Jansen, Michele De Sanctis, Zygmunt Kącki, Domas Uogintas, Itziar García-Mijangos, Ute Jandt, Jürgen Dengler, Úna FitzPatrick, Jens-Christian Svenning, Eszter Ruprecht, Idoia Biurrun, Kiril Vassilev, Borja Jiménez-Alfaro, Stephan M. Hennekens, Tomáš Peterka, Laura Casella, Zvjezdana Stančić, Jonathan Lenoir, Iva Apostolova, Flavia Landucci, Milan Valachovič, Fabio Attorre, Joop H.J. Schaminée, Renata Ćušterevska, Corrado Marcenò, Valentin Golub, Grzegorz Swacha, János Csiky, Patrice de Ruffray, Tatiana Lysenko, Vitaliy Kolomiychuk, Rense Haveman, Luis Carlón, Emiliano Agrillo, Ali Kavgaci, W. Bernhard Dickoré, Els De Bie, Željko Škvorc, Vassiliy Martynenko, Dana Michalcová, Roberto Venanzoni, Rosario G. Gavilán, Jesper Erenskjold Moeslund, Pierangela Angelini, Giuliano Fanelli, Jozef Šibík, Juan Antonio Campos, Yulia Vashenyak, Rasmus Ejrnæs, Adrian Indreica, Panayotis Dimopoulos, Daniel Krstonošić, Zora Dajić Stevanović, Chytrý, M., Hennekens, S., Jiménez-Alfaro, B., Knollová, I., Dengler, J., Jansen, F., Landucci, F., Schaminée, J., Aćić, S., Agrillo, E., Ambarlı, D., Angelini, P., Apostolova, I., Attorre, F., Berg, C., Bergmeier, E., Biurrun, I., Botta-Dukát, Z., Brisse, H., Campos, J., Carlón, L., Čarni, A., Casella, L., Csiky, J., Ćušterevska, R., Dajić Stevanović, Z., Danihelka, J., De Bie, E., de Ruffray, P., De Sanctis, M., Dickoré, W., Dimopoulos, P., Dubyna, D., Dziuba, T., Ejrnaes, R., Ermakov, N., Ewald, J., Fanelli, G., Fernández-González, F., Fitzpatrick, Ú., Font, X., García-Mijangos, I., Gavilán, R., Golub, V., Guarino, R., Haveman, R., Indreica, A., Işık Gürsoy, D., Jandt, U., Janssen, J., Jiroušek, M., Kącki, Z., Kavgacı, A., Kleikamp, M., Kolomiychuk, V., Krstivojević Ćuk, M., Krstonošić, D., Kuzemko, A., Lenoir, J., Lysenko, T., Marcenò, C., Martynenko, V., Michalcová, D., Moeslund, J., Onyshchenko, V., Pedashenko, H., Pérez-Haase, A., Peterka, T., Prokhorov, V., Rašomavičius, V., Rodríguez-Rojo, M., Rodwell, J., Rogova, T., Ruprecht, E., Rūsiņa, S., Seidler, G., Šibík, J., Šilc, U., Škvorc, Ž., Sopotlieva, D., Stančić, Z., Svenning, J., Swacha, G., Tsiripidis, I., Turtureanu, P., Uğurlu, E., Uogintas, D., Valachovič, M., Vashenyak, Y., Vassilev, K., Venanzoni, R., Virtanen, R., Weekes, L., Willner, W., Wohlgemuth, T., Yamalov, S., and Universitat de Barcelona

Subjects
0106 biological sciences, International Association for Vegetation Science, Bos- en Landschapsecologie, Ecoinformatic, 01 natural sciences, Ecoinformatics, Forest and Landscape Ecology, Vegetació, Ecology, Environmental resource management, PE&RC, Vegetation plot, Europe, Centralized database, Geography, Cartografia de la vegetació, Plantenecologie en Natuurbeheer, Vegetatie, Bos- en Landschapsecologie, medicine.symptom, Geographic coordinate system, Europa, Releve, Plant Ecology and Nature Conservation, European Vegetation Survey, Management, Monitoring, Policy and Law, Biodiversity informatics, 010603 evolutionary biology, Plot (graphics), Relevé, Database, Phytosociological data, Vegetation database, medicine, biodiversity informatics, database, ecoinformatics, european vegetation survey, international association for vegetation science, phytosociological data, relevé, vegetation database, vegetation plot, ecology, nature and landscape conservation, management, monitoring, policy and law, Vegetatie, Nature and Landscape Conservation, Vegetation mapping, Vegetation, business.industry, 15. Life on land, Defensie, Taxon, Biodiversity informatic, Integrated database, Vegetation, Forest and Landscape Ecology, business, Vegetation (pathology), 010606 plant biology & botany
Abstract

Biurrun, Idoia/0000-0002-1454-0433; Rojo, Maria Pilar Rodriguez/0000-0001-5449-9386; Ermakov, Nikolai/0000-0001-7550-990X; De Sanctis, Michele/0000-0002-7280-6199; Svenning, Jens-Christian/0000-0002-3415-0862; Virtanen, Risto/0000-0002-8295-8217; Agrillo, Emiliano/0000-0003-2346-8346; Onyshchenko, Viktor/0000-0001-9079-7241; Marceno, Corrado/0000-0003-4361-5200; Willner, Wolfgang/0000-0003-1591-8386; Fernandez-Gonzalez, Federico/0000-0003-1234-4065; Jansen, Florian/0000-0002-0331-5185; Swacha, Grzegorz/0000-0002-6380-2954; Dengler, Jurgen/0000-0003-3221-660X; Guarino, Riccardo/0000-0003-0106-9416; Sopotlieva, Desislava/0000-0002-9281-7039; Venanzoni, Roberto/0000-0002-7768-0468; Chytry, Milan/0000-0002-8122-3075; Kuzemko, Anna/0000-0002-9425-2756; Danihelka, Jiri/0000-0002-2640-7867; Kuzemko, Anna/0000-0002-9425-2756; Venanzoni, Roberto/0000-0002-7768-0468; Gavilan, Rosario G./0000-0002-1022-445X; Jansen, Florian/0000-0002-0331-5185; Wohlgemuth, Thomas/0000-0002-4623-0894; Svenning, Jens-Christian/0000-0002-3415-0862; Sibik, Jozef/0000-0002-5949-862X; Casella, Laura/0000-0003-2550-3010; Lenoir, Jonathan/0000-0003-0638-9582; Attorre, Fabio/0000-0002-7744-2195; Kacki, Zygmunt/0000-0002-2241-1631; Jandt, Ute/0000-0002-3177-3669; Carni, Andraz/0000-0002-8909-4298; Jirousek, Martin/0000-0002-4293-478X; GARCIA-MIJANGOS, ITZIAR/0000-0002-6642-7782; Campos, Juan Antonio/0000-0001-5992-2753; Fanelli, Giuliano/0000-0002-3143-1212; Haveman, Rense/0000-0001-9127-4549; Acic, Svetlana/0000-0001-6553-3797; De Bie, Els/0000-0001-7679-743X; Font, Xavier/0000-0002-7253-8905; Moeslund, Jesper Erenskjold/0000-0001-8591-7149; Martynenko, Vasiliy/0000-0002-9071-3789; Jimenez-Alfaro, Borja/0000-0001-6601-9597; Ejrnaes, Rasmus/0000-0003-2538-8606; Carlon Ruiz, Luis/0000-0003-3442-8710; Angelini, Pierangela/0000-0002-5321-9757; Silc, Urban/0000-0002-3052-699X; Landucci, Flavia/0000-0002-6848-0384; Ewald, Jorg/0000-0002-2758-9324; Dziuba, Tetiana/0000-0001-8621-0890 WOS: 000368074600018 The European Vegetation Archive (EVA) is a centralized database of European vegetation plots developed by the IAVS Working Group European Vegetation Survey. It has been in development since 2012 and first made available for use in research projects in 2014. It stores copies of national and regional vegetation-plot databases on a single software platform. Data storage in EVA does not affect on-going independent development of the contributing databases, which remain the property of the data contributors. EVA uses a prototype of the database management software TURBOVEG 3 developed for joint management of multiple databases that use different species lists. This is facilitated by the SynBioSys Taxon Database, a system of taxon names and concepts used in the individual European databases and their corresponding names on a unified list of European flora. TURBOVEG 3 also includes procedures for handling data requests, selections and provisions according to the approved EVA Data Property and Governance Rules. By 30 June 2015, 61 databases from all European regions have joined EVA, contributing in total 1 027 376 vegetation plots, 82% of them with geographic coordinates, from 57 countries. EVA provides a unique data source for large-scale analyses of European vegetation diversity both for fundamental research and nature conservation applications. Updated information on EVA is available online at http://euroveg.org/eva-database. Czech Science Foundation (Centre of Excellence PLADIAS) [14-36079G] Our major thanks go to thousands of European vegetation scientists of several generations who collected the original vegetation-plot data in the field, published them or made their unpublished data available to others, and to those who spent myriad hours digitizing data and managing the contributing databases. EVA data management has been partly funded by the Czech Science Foundation (Centre of Excellence PLADIAS, 14-36079G).

Published
2016

8. THE SYNTAXONOMY ANO SYNGENESIS OF THE ELYNOSESLERIETEA BR.-BL. 1948 IN THE BALKAN PENINSULA

Author

S. REDZIC

Subjects
Dinaric Alps, lcsh:Botany, Elyno-Seslerietea, High mountain vegetation, Syngenesis, Balkans, European Vegetation Survey, Syntaxonomy, lcsh:QK1-989
Abstract

High mountain vegetation on calcareous geological foundation is prevalent in the alpine and subalpine belts of mountains on the Balkan peninsula. The class ElYf1o-Seslerielea is represented in alpine and subalpine communities of meadows and pastures in these communities. species from Dinaric, Balkan, Illyrian, and the south-eastern European floral element play dominant role. In the investigation area, the class is differentiated into the following orders: Seslerietalia juncifoliae (=tenuifoliae) Horvat 1930 with alliances Seslerion juncifoliae (=tenuifoliae) Horvat 1930 in alpine belts and Festucion bosniacae (=pungentis) Horvat 1930 in the subalpine belts and Festudon paniculatae calcicolum (Redzic, Lakusic et al.. 1984) Redzic in North-western part; OnobrychydoSeslerietalia Horvat 1949 with alliances Onobrycho-Festucion Horvat 1936, Festuco-Knaution longifoliae Horvat 1949, Edraiantho-Seslerion Horvat 1949, Seslerion rigidae Zolyomy 1939 and Seslerio-Festucion xanthinae Horvat 1949 in the eastern and southern part; Order Crepidetalia dinaricae (=urumovii) Lakusic 1966 with al1iances Campanulion linifolii Lakusic.: 1964, Festucion pseudoxanthinae Lakusic 1968. Oxytropidion dinaricae (=urumovii) Lakusic 1966 in the south-eastern Dinaric Alps; arder Edraintho-Seslerietalia robustae Orda nov prov. with alliances Seslerion robustae (Lakusic et al. 19R2) and Seslerio-Edraianthion pumilii Redzic all. nova prov. in the coastal side of oro-mediterranean region of Balkans.

Published
2003

9. Common data standards for recording relevés in field survey for vegetation classification

Author

Ladislav Mucina, John S. Rodwell, and Joop H.J. Schaminée

Subjects
Ecology, Standardization, business.industry, Syntaxonomy, Vegetation classification, Environmental resource management, European Vegetation Survey, Plant Science, Field survey, Relevé, Plant ecology, Cover-abundance scale, Vegetation types, Geography, Credibility, medicine, Wageningen Environmental Research, Sampling scale, medicine.symptom, Vegetation (pathology), business
Abstract

In the framework of the European Vegetation Survey common data standards are proposed for recording phytosociological releves for syntaxonomical classification. The authors wish to establish the notion that common data standards for recording phytosociological data can only be advantageous for advancing the credibility and application of vegetation science, and may stimulate other projects.

Published
2000

10. Towards unification of national vegetation classifications: a comparison of two methods for analysis of large data sets

Author

Bruelheide, H. and Chytry, M.

Subjects
VEGETATION classification, BOTANY
Abstract

In European phytosociology, national classifications of corresponding vegetation types show considerable differences even between neighbouring countries. Therefore, the European Vegetation Survey project urgently needs numerical classification methods for large data sets that are able to produce compatible classifications using data sets fromdifferent countries. We tested the ability of two methods, TWINSPAN and COCKTAIL, to produce similar classifications of wet meadows (Cahhion, incl. Filipendulenion) for Germany (7909 releves) and the Czech Republic (1287 releves) in this respect. In TWINSPAN, the indicator ordination option was used for classification of two national data sets, and the extracted assignment criteria (indicator species) were applied crosswise from one to the other national data set. Although the data sets presumably contained similar community types, TWINSPAN revealed almost no correspondence between the groups derived from the proper classification of the national data set and the groups defined bythe assignment criteria taken from the other national data set. The reason is probably the difference in structure between the national data sets, which is a typical, but hardly avoidable, feature of any pair of phytosociological data sets. As a result, the first axis of thecorrespondence analysis, and consequently the first TWINSPAN division, are associated with different environmental gradients; the difference in the first division is transferred and multiplied further down the hierarchy. COCKTAIL is a method which produces releve groups on the basis of statistically formed species groups. The user determines the starting points for the formation of species groups, and groups already found in one data set can be tested for existence in the otherdata set. The correspondence between the national classifications produced by COCKTAIL was fairly good. For some releve groups, the lack of correspondence to groups in the other national data set could be expla [ABSTRACT FROM AUTHOR]

Published
2000
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11. A new measure of fidelity and its application to defining species groups

Author

Bruelheide, H.

Subjects
BOTANY, VEGETATION classification, BINOMIAL distribution
Abstract

The first objective of this paper is to define a new measure of fidelity of a species to a vegetation unit, called u. The value of a is derived from the approximation of the binomial or the hypergeometric distribution by the normal distribution. It is shown that the properties of a meet the requirements for a fidelity measure in vegetation science, i.e. to reflect differences of a species' relative frequency inside a certain vegetation unit and its relative frequency in the remainder of the data set; (2) to increase with increasing size of the data set. Additionally (3), a has the property to be dependent on the proportion of the vegetation unit's size to the size of the whole data set. The second objective is to present a method of how to use the value of a for finding species groups in large data bases and for defining vegetation ti pits. A species group is defined by possession ofspecies that how the highest value of a among all species in the data set With regard to the vegetation unit defined by this species group. The vegetation unit is defined as comprising all releves that include a minimum number of the species in the species group. This minimum number is derived statistically in such a way that fewer releves always belong to a species group than would be expected if the differential species were distributed randomly among the releves. An iterative algorithm is described for detecting species groups in data bases. Starting with an initial species group, species composition of this group and the vegetation unit defined by this group are mutually optimized. With this algorithm species groups are formed in a data set independently of each other. Subsequently, these species groups can be combined in such a way that they are suited to define commonly known syntaxa a posteriori. [ABSTRACT FROM AUTHOR]

Published
2000
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