TY - BOOK AU - Veress, Márton ED - Györéné, Koperecz Éva TI - A karszt ET - 0 PB - Berzsenyi Dániel Főiskola Természetföldrajzi Tanszék CY - Szombathely PY - 2004 SP - 215 SN - 9639531235 UR - https://m2.mtmt.hu/api/publication/1822297 ID - 1822297 LA - Hungarian DB - MTMT ER - TY - BOOK AU - Borhidi, Attila TI - Magyarország Növénytársulásai ET - 0 PB - Akadémiai Kiadó CY - Budapest PY - 2003 SP - 610 SN - 9630579839 UR - https://m2.mtmt.hu/api/publication/123980 ID - 123980 N1 - Megjegyzés-20514169 pp. 263 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Chytry, M AU - Tichy, L AU - Holt, J AU - Botta-Dukát, Zoltán TI - Determination of diagnostic species with statistical fidelity measures JF - JOURNAL OF VEGETATION SCIENCE J2 - J VEG SCI VL - 13 PY - 2002 IS - 1 SP - 79 EP - 90 PG - 12 SN - 1100-9233 DO - 10.1111/j.1654-1103.2002.tb02025.x UR - https://m2.mtmt.hu/api/publication/1139674 ID - 1139674 AB - Statistical measures of fidelity, i.e. the concentration of species occurrences in vegetation units, are reviewed and compared. The focus is on measures suitable for categorical data which are based on observed species frequencies within a vegetation unit compared with the frequencies expected under random distribution. Particular attention is paid to Bruelheide's it value. It is shown that its original form, based on binomial distribution, is an asymmetric measure of fidelity of a species to a vegetation unit which tends to assign comparatively high fidelity values to rare species. Here, a hypergeometric form of it is introduced which is a symmetric measure of the joint fidelity of species to a vegetation unit and vice versa. It is also shown that another form of the binomial it value may be defined which measures the asymmetric fidelity of a vegetation unit to a species. These it values are compared with phi coefficient, chi-square, G statistic and Fisher's exact test. Contrary to the other measures, phi coefficient is independent of the number of releves in the data set, and like the hypergeometric form of it and the chi-square it is little affected by the relative size of the vegetation unit. It is therefore particularly useful when comparing species fidelity values among differently sized data sets and vegetation units. However, unlike the other measures it does not measure any statistical significance and may produce unreliable results for small vegetation units and small data sets. The above measures, all based on the comparison of observed/expected frequencies, are compared with the categorical form of the Dufrene-Legendre Indicator Value Index, an index strongly underweighting the fidelity of rare species. These fidelity measures are applied to a data set of 15 989 releves of Czech herbaceous vegetation. In a small subset of this data set which simulates a phytosociological table, we demonstrate that traditional table analysis fails to determine diagnostic species of general validity in different habitats and large areas. On the other hand, we show that fidelity calculations used in conjunction with large data sets can replace expert knowledge in the determination of generally valid diagnostic species. Averaging positive fidelity values for all species within a vegetation unit is a useful approach to measure quality of delimination of the vegetation unit. We propose a new way of ordering species in synoptic species-by-releve tables, Using fidelity calculations. LA - English DB - MTMT ER - TY - THES AU - Hoyk, Edit TI - Természetvédelmi szempontú geoökológiai értékelés a tervezett Nyugat-Mecsek Tájvédelmi Körzet területén PB - Szegedi Tudományegyetem (SZTE) PY - 2002 SP - 141 UR - https://m2.mtmt.hu/api/publication/1933816 ID - 1933816 LA - Hungarian DB - MTMT ER - TY - CHAP AU - Salamonné Albert, Éva AU - Morschhauser, Tamás ED - Salamonné Albert, Éva ED - Borhidi, Attila TI - A zonalitási jelleg és az ökológiai indikátorérték spektrumok T2 - Magyar botanikai kutatások az ezredfordulón: tanulmányok Borhidi Attila 70. születésnapja tiszteletére PB - Pécsi Tudományegyetem TTK Növénytani Tanszék CY - Pécs SN - 9636418713 PY - 2002 SP - 589 EP - 605 PG - 17 UR - https://m2.mtmt.hu/api/publication/1589172 ID - 1589172 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Hoyk, Edit AU - Kevei, Ferencné TI - Tájökológiai szempontú vegetációelemzés a nyugat-mecseki karszton JF - KARSZTFEJLŐDÉS J2 - KARSZTFEJLŐDÉS VL - 5 PY - 2000 SP - 47 EP - 55 PG - 9 SN - 1585-5473 UR - https://m2.mtmt.hu/api/publication/1156501 ID - 1156501 N1 - Nincs jelölve a levelező szerzőség a közleményen. (SE SZTE admin5) LA - Hungarian DB - MTMT ER - TY - CHAP AU - Varga, Zoltán Sándor AU - Sipos, J AU - Orci, Kirill Márk AU - Rácz, István András ED - Virágh, Klára ED - Kun, András TI - Félszáraz gyepek az Aggteleki-karszton: fitocönológiai viszonyok, egyenesszárnyú rovar- és lepkeegyüttesek T2 - Vegetáció és dinamizmus PB - MTA Ökológiai és Botanikai Kutatóintézet (ÖBKI) CY - Vácrátót SN - 9638391235 PY - 2000 SP - 195 EP - 238 PG - 44 UR - https://m2.mtmt.hu/api/publication/1127103 ID - 1127103 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kevei, Ferencné TI - Microclimate of Karstic Dolines JF - ACTA CLIMATOLOGICA J2 - ACTA CLIMATOL VL - 32-33 PY - 1999 IS - 1 SP - 19 EP - 27 PG - 9 SN - 0563-0614 UR - https://m2.mtmt.hu/api/publication/1156464 ID - 1156464 LA - English DB - MTMT ER - TY - JOUR AU - Hoyk, Edit TI - Geoecological studies on the karstic territories of the planned Protected Area in Western Mecsek, South Hungary JF - ACTA CARSOLOGICA J2 - ACTA CARSOLOGICA VL - 28 PY - 1999 IS - 2 SP - 91 EP - 102 PG - 12 SN - 0583-6050 UR - https://m2.mtmt.hu/api/publication/1725606 ID - 1725606 LA - English DB - MTMT ER - TY - JOUR AU - Hoyk, Edit TI - Investigations of the vegetation and soil in the dolinas of Mecsek Mountain, South Hungary JF - ACTA CARSOLOGICA J2 - ACTA CARSOLOGICA VL - 28 PY - 1999 IS - 1 SP - 105 EP - 113 PG - 9 SN - 0583-6050 UR - https://m2.mtmt.hu/api/publication/1725581 ID - 1725581 LA - English DB - MTMT ER - TY - JOUR AU - Kevey, Balázs AU - Borhidi, Attila TI - Top-forest (Aconito anthorae-Fraxinetum orni) a special ecotonal case in the phytosociological system (Mecsek Mts, South Hungary) JF - ACTA BOTANICA HUNGARICA J2 - ACTA BOT HUNG VL - 41 PY - 1998 IS - 1-4 SP - 27 EP - 121 PG - 95 SN - 0236-6495 UR - https://m2.mtmt.hu/api/publication/123363 ID - 123363 LA - English DB - MTMT ER - TY - BOOK AU - Podani, János TI - Multivariate Data Analysis in Ecology and Systematics T3 - Ecological Computations Series (ECS) ; 6. ET - 0 PB - SPB Academic Publishing CY - The Hague PY - 1994 SP - 316 SN - 9051030940 UR - https://m2.mtmt.hu/api/publication/1223460 ID - 1223460 LA - English DB - MTMT ER - TY - JOUR AU - Boros, J AU - Kevei, Ferencné TI - Néhány adat egy bükki töbör keleti és nyugati lejtőjének felmelegedéséhez. JF - IDŐJÁRÁS / QUARTERLY JOURNAL OF THE HUNGARIAN METEOROLOGICAL SERVICE J2 - IDŐJÁRÁS VL - 79 PY - 1975 IS - 5 SP - 297 EP - 300 PG - 4 SN - 0324-6329 UR - https://m2.mtmt.hu/api/publication/1154799 ID - 1154799 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Kevei, Ferencné TI - Der Einfluss des Niveauunterschiedes und der Exposition auf die Lufttemperatur in einer Doline im Bükk-Gebirge JF - ACTA CLIMATOLOGICA J2 - ACTA CLIMATOL VL - 7 PY - 1967 IS - 1-4 SP - 85 EP - 109 PG - 25 SN - 0563-0614 UR - https://m2.mtmt.hu/api/publication/1172437 ID - 1172437 LA - German DB - MTMT ER -