Forest fragmentation is a reality in several Brazilian regions due to high deforestation rates. Studies on these fragments are fundamental, as they enable monitoring and predicting the ...transformations of populations and isolated plant communities. This work aimed to evaluate the edge effect on the phytosociological and floristic structure of a Montane Seasonal Semi-deciduous Forest fragment in Vitória da Conquista, BA, Brazil. The methodology used is a hierarchical and divisive classification of species (TWINSPAN), which enables identifying groups of species which characterize each sample, but is rarely used in the literature in this context. The studied fragment is influenced by the edge effect, evidenced by the increase in the average height and diameter of individuals towards the fragment interior. The addition to a clear distinction between species compositions, being minimized 90 m away from the edge.
Anexo 1. Abundancia e Índice de valor de importancia (IVI) en orden descendente para las especies de malezas registradas en general en plantaciones bananeras del departamento del Magdalena e IVI en ...cada una de las zonas muestreadas. Citación: Quintero-Pertuz I, Carbonó-Delahoz E, Hoyos V, Jarma-Orozco A, Plaza G. 2021. Fitosociología de malezas en plantaciones bananeras en el departamento del Magdalena, Colombia. Caldasia. 43(1):80–93. doi: https://dx.doi.org/10.15446/caldasia.v43n1.83554
The fourth edition of the International Code of Phytosociological Nomenclature (ICPN) was prepared by the Steering Committee of the IAVS Working Group for Phytosociological Nomenclature (GPN). The ...edition consists of 14 Definitions, 7 Principles, 53 Articles, and 7 Appendices. When compared with the previous edition, the main amendments are: (a) the acceptance of electronic publications (Art. 1); (b) the introduction of binding decisions (Definition XIV, Principle II, Articles 1, 2b, 3c, 29b, 40, 42, 44, Appendices 6 and 7); (c) the mandatory use of the English or Latin terminology for syntaxonomic novelties (Definition II, Principle II, Articles 3d and 3i); (d) the introduction of autonyms for the main ranks when the corresponding secondary ranks are created (Articles 13b and 24); (e) the automatic correction of the taxon names (name‐giving taxa) used in the names of syntaxa in accordance with the International Code of Nomenclature for algae, fungi, and plants (ICN) (Article 44); (f) the possibility to mutate the name of a syntaxon in using other correct, alternative names for the name‐giving taxa (Article 45); (g) the introduction of inadequate names, a new category of rejected names (Definition V, Articles 43 through 45); and (h) the introduction of a conserved type (Definition XIII, Article 53). The fourth edition of ICPN was approved by the GPN on 25 May 2019 and becomes effectively binding on 1 January 2021.
The new edition of the ICPN will become effectively binding on 1 January 2021. It consists of 14 Definitions, 7 Principles, 53 Articles, and 7 Appendices. Some Articles bring important amendments, among which the acceptance of electronic publications or the possibility to request a binding decision on controversial cases.
We present a first complete overview of the bryophyte-lichen syntaxa in the Netherlands, including diagnostic species and Red List status of vegetations representing each (sub)association. The ...classification is based on more than 5000 Dutch vegetation relevés, the majority recorded after the year 2000. Whenever appropriate, we integrated bryophyte and lichen syntaxonomy. The Dutch list of bryolichenosociological units consists of 168 syntaxa: 16 classes, 27 orders, 37 alliances, 82 associations and 6 subassociations. We present synoptic tables of 13 newly described syntaxa: two alliances, nine associations and two subassociations. Finally, we present ranges of the abiotic habitat variables moisture, light availabilty, nutrient richness and acidity on class level, based on estimated values of diagnostic species of individual associations in each class.
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