Results 51 to 60 of about 232 (164)

Recent hummock establishment in the margin of a subarctic fen, Finnish Lapland

Boreas, Volume 53, Issue 2, Page 282-295, April 2024.
We studied four peat profiles from a subarctic fen and observed a drastic shift from sedge‐dominated vegetation to Sphagnum‐domination accompanied by a turnover in testate amoeba communities during the late 20th and the early 21st centuries. Testate amoeba‐based water table reconstructions indicated recent drying.
Olivia Kuuri‐Riutta, Elmiina Pilkama, Susanna Salminen‐Paatero, Camille Vögeli, Edward A. D. Mitchell, Annalea Lohila, Eeva‐Stiina Tuittila, Minna Väliranta   +7 more
wiley   +1 more source

A critical re‐analysis of constraints on the timing and rate of Laurentide Ice Sheet recession in the northeastern United States

Journal of Quaternary Science, Volume 39, Issue 1, Page 54-69, January 2024.
Abstract We review geochronological data relating to the timing and rate of Laurentide Ice Sheet recession in the northeastern United States and model ice margin movements in a Bayesian framework using compilations of previously published organic 14C (n = 133) and in situ cosmogenic 10Be (n = 95) ages.
Christopher T. Halsted, Paul R. Bierman, Jeremy D. Shakun, P. Thompson Davis, Lee B. Corbett, Jason S. Drebber, John C. Ridge   +6 more
wiley   +1 more source

Reconstruction of the palaeoenvironment using biomarkers and clay mineralogy in loess deposits of northern Iran

مجله آب و خاک, 2016
Introduction: Knowledge about palaeoenviroment and palaeovegetation provides information about how vegetation reacts on climate fluctuations in the past, what will help understanding current and future developments caused by e.g. climate change. Northern
A. Shahriari, F. Khormali, M. Kehl, A. Karimi, M. Mousavidastenaei, E. Lehndorff   +5 more
doaj   +1 more source

Modern pollen assemblages from the hinterland of the Tibetan Plateau and their significance for reconstructions of past vegetation

Boreas, Volume 53, Issue 1, Page 42-55, January 2024.
Based on a detailed field vegetation survey and obtained the pollen assemblages of surface soil samples. The pollen assemblages of surface soil and their significance for vegetation reconstruction in alpine meadow and alpine steppe on the Tibetan Plateau were determined.
Linyuan Ma, Zhiguang Li, Qinghai Xu, Hongmei Li, Kailong Zhang, Yuecong Li, Ruchun Zhang, Xianyong Cao, Shengrui Zhang   +8 more
wiley   +1 more source

Model of wetland development of the Amapá coast during the late Holocene

Anais da Academia Brasileira de Ciências, 2010
The modern vegetation types, sedimentary sequences, pollen records and radiocarbon dating obtained from three sediment cores from Calçoene Coastal Plain were used to provide a palaeoecological history during the late Holocene of Amapá coastal wetland ...
José T.F. Guimarães, Marcelo C.L. Cohen, Marlon C. França, Rúben J. Lara, Hermann Behling   +4 more
doaj   +1 more source

Palynofloral, palaeovegetational and palaeoenvironmental investigations in the Lower Kamthi Formation of South India

Journal of Palaeosciences
These studies were carried out to better understand the palynostratigraphic and palaeoclimatic fluctuations observed in the floral ecosystem. The palynofloral investigation discovered two palynoassemblages (I-II). Faunipollenites spp. and Striatopodocarpites spp.
Harinam Joshi, Neha Aggarwal, Neerja Jha
openaire   +1 more source

Unveiling ancient flora and reproductive echoes from the Permian: Palaeobotanical evidence of fertile parts from the Lower Kamthi Formation, Talcher Basin, India

Journal of the Palaeontological Society of India
A well-diversified assemblage of plant megafossils has been recovered from the Lower Kamthi sediments of Madhupur Village in the Talcher Basin, Odisha, India. The collection includes representatives from Sphenophyllales ( Trizygia speciosa ), Filicales (
ROSHNI PATEL, SHREERUP GOSWAMI
doaj   +1 more source

Pliocene Coal Geochemistry: Palaeovegetation and Palaeoclimate Distribution in Berau Basin, Indonesia

European Journal of Environment and Earth Sciences
We investigated the distributions and concentrations of plant-derived aliphatic-aromatic biomarkers in the Pliocene coal seam from the Pliocene Sajau Formation (CSF) in Berau Basin, Indonesia. In all coal samples, the presence of these components is abundant and varied, reflecting the diversity of paleoflora species and ancient climate variations ...
Ahmad Helman Hamdani, Winantris Sanusi
openaire   +1 more source

Secondary community of palaeovegetation around the middle Neolithic Mawaki Site, Noto Peninsula, Japan.

Proceedings of the Japan Academy, Series B, 1988
Introduction. The Mawaki Archaeological Site is located at a narrow lowland facing on Toyama Bay of Japan Sea, Central Japan. This site was a small village during the middle Neolithic age from the early Jomonian period (ca. 6,000-4,500 years ago) to the latest Jomonian period (ca. 3,500-2,200 years ago), and covers an area of 40,000 m2.
openaire   +2 more sources

The Holocene palaeogeography of Paanajärvi National Park, northwestern Russia

Fennia: International Journal of Geography, 1999
The Holocene palaeogeography of Paanajärvi National Park was studied by geobotanical, palaeobotanical, palynological and radiocarbon methods, and certain classes of living organisms such as Algae, Fungi, Rhizopoda and Rotatoria were analysed ...
Vlasta Jankovská, Yrjö Vasari, G. A. Elina, O. L. Kuznetskov   +3 more
doaj