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Transition along gradient from warm to mesic temperate forests evaluated by GAMM

Journal of plant ecology 2016年第4期9卷 421-433页

作者： AndražČarni Vlado Matevski Nina Juvan Mitko Kostadinovski Petra Košir Aleksander Marinšek Andrej Paušič UrbanŠilc Institute of Biology Research Centre of the Slovenian Academy of Sciences and ArtsNovi trg 2SI-1000 LjubljanaSlovenia University of Nova Gorica Vipavska 13SI-5000 Nova GoricaSlovenia Macedonian Academy of Sciences and Arts Bul.Krste Misirkov2P.O.Box 428MK-1000 SkopjeRepublic of Macedonia Faculty of Natural Sciences and Mathematics Institute of BiologyUniversity of Ss.Cyril and MethodiusGazi Baba b/b-P.O.Box 162MK-1000 SkopjeRepublic of Macedonia Anton Melik Geographical Institute Research Centre of the Slovenian Academy of Sciences and ArtsNovi trg 2SI-1000 LjubljanaSlovenia Faculty of Mathematics Natural Sciences and Information TechnologiesUniversity of PrimorskaGlagoljaška 8SI-6000 KoperSlovenia Slovenian Forestry Institute Večna pot 2SI-LjubljanaSlovenia Kranjčeva 8 SI-9220 LendavaSlovenia Biotechnical Centre Naklo Strahinj 99SI-4202 NakloSlovenia

Aims The aim of the study was to discover what set of variables best explains the transition from warm to mesic forest *** on various variables grouped into sets(geomorphological,ecological,structural,soil characteristics and chorological),six models were built and tested by generalized additive mixed models(GAMMs).We assumed that each set of variables has different explanatory *** aim was to compare the six different models(sets of variables),to test which model best explains the species turnover in forest communities along the transition between warm and mesic temperate forests and to try to find reasons for the different explanatory power of the *** The research took place in the southern part of the Balkan *** sampling was done according to standard *** gradient from warm to mesic forests was defined as the turnover of species and evaluated by projection of samples on the first unconstrained DCA ***,ecological,structural and soil characteristics,together with chorological sets of variables,were regressed on the turnover of species *** on the five sets of variables,six models were constructed and tested by generalized additive mixed *** Findings Ecological conditions best explain the change of forest communities along the gradient;evolution and the development of vegetation reflected in chorotypes are also of high importance;geomorphology and structure seem not to change so dramatically and soil shows the least significant differences of *** variables are the most important set of variables in the transition between warm and mesic temperate forests but eco-evolutionary dynamics after the Pleistocene should also be taken into consideration.

关键词： Balkan chorotypes life forms ecology plant ecology soil science vegetation evolution refugium

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