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Data-processing in phytosociology: Report on the activities by Eddy Van Der Maarel (auth.), Eddy van der Maarel, László

By Eddy Van Der Maarel (auth.), Eddy van der Maarel, László Orlóci, Sandro Pignatti (eds.)

(RANKIN) of equivocation info (1-:) and interplay details (M). the tactic is defined within the current paper for I: and in a prior paper (Orloci, 1976) for M. the consequences provided during this paper recommend that for Species Rank order info percent of overall* species to be weighted in keeping with their suitability to I· M I M r M signify remoted teams of releves in a phytosociolo­ five 7 54.15 2.31 17.97 0.82 gical desk, the equivocation info may possibly function a nine five 49.86 23.19 16.55 8.22 three three nine 47.79 0.56 15.86 0.20 compatible weight. the best formulations are derived 6 four eight 36.18 1.18 12.01 0.42 four five three 24.36 59.34 8.09 21.03 and computed for a few information from a salt marsh group. eight 6 four 24.25 39.04 8.05 13.84 10 7 I 21.96 71.17 7.29 25.23 7 eight 2 18.67 69.01 6.20 24.46 nine 10 18.40 6.11 10 6 5.64 16.31 1.87 5.78 References overall 301.00* 282.11 * 100.00 100.00 Feoli, E. 1973. An index for weighing characters in monothetic classifications. (Italian with English summary). Giorn. Bot. Ita!' 107: 263-268. Gower, J.e. 1967. A comparability of a few tools of cluster is a monotone, expanding functionality of pattern dimension if .. ).

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Extra resources for Data-processing in phytosociology: Report on the activities of the Working-group for data-processing in phytosociology of the International society for vegetation science, 1969–1978

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Godron et 1. Poissonet (1972) comme etant 'Ies stades d'evolution dont la situation est previsible, en fonction des principaux criteres visibles in situ'. Chaque sequence est nommee d'apres Ie dernier stade previsible. Le code adopte est Ie suivant: Sequence a: PS Pinus silpestris L. (Pin sylvestre) CB Quercus puhescens Willd (Chene blanc) FO Festuca opina L. (Fetuque ovine) H Fagus silvatica L. (Hetre) GP Cytisus purgans (L) Benth. (Genet purgatif) C Calluna vulgaris (L) Hull (Callune en altitude) PC-H Pinus montana uncinata Ram.

I-1lI gemiiss bestimmt und stiitzen sich auf eine eigene alphabetische Liste fUr S- und SWEuropa, mit ad hoc Erganzungen flir das iibrige Europa, basiert. Etwa 9000 Arten sind bisher in Trieste codiert worden. Das Code-System wird mit den Systemen von Ehrendorfer, Flora Europaea, alphabetischen Systemen und Gould's international plant index verglichen. Probleme der Anderungen in der Nomenklatur und der Artbegriffe und ihre Bedeutung fiir den Code werden besprochen. References Ascherson, P. & P.

En mosalque des hetraies de la Montagne Noire. Institut de Botanique, Montpellier, II p. Annexe Tableau des observations relatives aux cinq variables retenues pour I'etude regionale et legende. (ci-dessous). Ugende I) variable altitude (ALT). s clairs 4 - ligneux bas 5 - herbaces 6 - ligneux hauts et ligneux bas 8 - ligneux bas et herbaces 9 - ligneux hauts, ligneux bas et herbaces - Ie deuxieme chiffre Ie degre d'artificialisation o - 'climax' 1 - degre d'artificialisation extensif 2 - degre d'artificialisation demi-extensif 3 - degre d'artificialisation intensif ex: 41, ligneux bas a degre d'artificialisation extensif (landes, garrigues, maquis) 3) variable sequences de vegetation (SEQ) La sequence de vegetation est definie par M.

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