Quantifying patterns and controls of mire vegetation succession in a southern boreal bog in Finland using partial ordinations

摘要: Abstract Question: How do we distinguish between concurrent allogenic and autogenic forcings behind changing patterns in plant community structures during mire development? Location: Lakkasuo raised bog, southern Finland. Methods: Two radiometrically dated peat profiles were studied using high resolution macrofossil analysis. A combination of partial direct indirect gradient analyses (CCA DCA) was applied to quantify the role different drivers vegetation changes. Results: Autogenic hydroseral succession explained 16% compositional variation vegetation. Disturbance successions initiated by fire 15% hummock, but only 9% wetter lawn. The early post-disturbance successional stages characterized Eriophorum vaginatum. After partialling out effects depth time since fire, a moisture 29% hummock core 26% also indicated alternation species wi...