Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Titre : Long-term vegetation dynamics along altitudinal and longitudinal gradients in the Hyrcanian forest region (northern Iran) The role of climate, fire and anthropogenic impacts during the late Quaternary

Auteur : Homami Totmaj, Leila

Université de soutenance : Georg-August-Universität Göttingen

Grade : Doctor of Philosophy (Ph.D. Division of Mathematics and Natural Sciences) 2021

Chapitres
This thesis comprises five chapters :
Chapter 1 This chapter includes an introduction to the Hyrcanian region and previous studies related to the objectives of the current study. Also, it represented an overview of the study sites, a description of the methods, and the multi-proxy palaeoecological analyses. The aims of this research were developed into four separate manuscripts to be published in peer-reviewed scientific journals. The published and submitted manuscripts are presented in
Chapter 2 Four millennia of vegetation and environmental history above the Hyrcanian forest, northern Iran This study provided the first study on the highlands of the Gilan province. With the help of the multi-proxy analysis, vegetation changes of the mire were examined for the last 4,300 years ago, under the influence of human activities and climate changes.
Chapter 3 Late Holocene paleoenvironmental changes inferred from multi-proxy studies of the KholashtKouh Lake sediments in the Gilan mountains, northern Iran The vegetation dynamics and climate changes were reconstructed using the palynological and geochemical records of the lake sediment core. In addition, the effects of the past climatic changes as well as anthropogenic activities on the south-eastern highlands of the Gilan province were reconstructed using palaeoecological proxies.
Chapter 4 Late Holocene Hyrcanian forest and environmental dynamics in the mid-elevated highland of the Alborz Mountains, northern Iran The past vegetation, fire, climate dynamics, and human impact on the western mid-elevated area of the Hyrcanian forest were investigated applying the multi-proxy analysis for the last ca. 1700 cal yr BP. f
Chapter 5 The contemporary vegetation of the western Hyrcanian forests was investigated in two different altitudinal transects for the first time utilizing the novel DNA metabarcoding technic and traditional pollen counting.
Chapter 6 In the final chapter, the main findings of the research synthesized, and future possible research aspects expressed

Présentation (DART)

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