Results 41 to 50 of about 4,175,231 (214)

Response of Remote Tropical West Pacific Islands to Climate Variability: A Multiproxy Record From T‐Lake, Palau, Spanning the Early Holocene to Present

Archaeometry, EarlyView.
ABSTRACT Lake sediments are natural archives of past environmental dynamics and how these systems have responded to past climate variability. Sediment geochemistry, governed by local geology and climate processes, is unique to each lake‐catchment and geochemical proxies must be validated for each study site.
Jalene Nalbant, Larissa Schneider, Jessica L. Blois, Matthew Wolhowe, Julian P. Sachs, Simon G. Haberle, Geoffrey Clark   +6 more
wiley   +1 more source

Untangling nutrient co‐regulation of ombrotrophic peatland development

Boreas, EarlyView.
Multi‐method (FTIR, FT‐NIR and TGA) approaches characterizing the organic peat constituents at Holcroft Moss reveal a record of switches that reflect broadly hydroclimate variability governing the decomposition patterns. There are periods, however, where hydroclimate does not fully explain the variability observed and instead changes appear linked to ...
Richard C. Chiverrell, Daniel N. Schillereff, Fiona E. Russell, Julie Valentine, Jason R. Kirby, David M. Wilkinson, John F. Boyle   +6 more
wiley   +1 more source

Late Holocene moisture variability in Arctic Alaska from chitin δ18O

Boreas, EarlyView.
Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley   +1 more source

Lateglacial And Early Holocene Environments And Human Occupation In Brandenburg, Eastern Germany

Geography, Environment, Sustainability, 2019
The  paper reports   on  the  results   of  the  pollen, plant macrofossil   and geochemical  analyses and the AMS 14C-based  chronology  of the «Rüdersdorf»  outcrop situated  east of Berlin  in Brandenburg  (Germany).
Franziska Kobe, Martin K. Bittner, Christian Leipe, Philipp Hoelzmann, Tengwen Long, Mayke Wagner, Romy Zibulski, Pavel E. Tarasov   +7 more
doaj   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

Boreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo, Priyadarsi D. Roy, Benjamin Gwinneth, Irma G. Vargas‐Martinez, Alejandro A. Aragon‐Moreno, Roger Medina‐Gonzales   +5 more
wiley   +1 more source

Peatland Development, Vegetation History, Climate Change and Human Activity in the Valdai Uplands (Central European Russia) during the Holocene: A Multi-Proxy Palaeoecological Study

Diversity, 2020
Peatlands are remarkable for their specific biodiversity, crucial role in carbon cycling and climate change. Their deposits preserve organism remains that can be used to reconstruct long-term ecosystem and environmental changes as well as human impact in
Yuri A. Mazei, Andrey N. Tsyganov, Maxim V. Bobrovsky, Natalia G. Mazei, Dmitry A. Kupriyanov, Mariusz Gałka, Dmitry V. Rostanets, Kseniya P. Khazanova, Tamara G. Stoiko, Yulia A. Pastukhova, Yulia A. Fatynina, Alexander A. Komarov, Kirill V. Babeshko, Anastasiya D. Makarova, Damir A. Saldaev, Elya P. Zazovskaya, Maria V. Dobrovolskaya, Alexei V. Tiunov   +17 more
doaj   +1 more source

Chironomid‐based summer temperature reconstruction of the Eemian–Weichselian transition at Lichtenberg, northern Germany

Boreas, EarlyView.
Understanding the temperature variability of past interglacial cycles is essential to predict future climates. We present a new summer temperature reconstruction, based on the subfossil chironomid record from a small palaeolake adjacent to the Middle Palaeolithic site of Lichtenberg, northern Germany. The record spans from the Saalian late glacial over
Sonja Rigterink, Bartosz Kotrys, Michael Hein, Xuan Li, Neda Rahimzadeh, Agnieszka Gruszczyńska, Marcel Weiss, Brigitte Urban, David Colin Tanner, Tobias Lauer, Antje Schwalb   +10 more
wiley   +1 more source

The sedimentary sequence from the Lake Ķūži outcrop, central Latvia: implications for late glacial stratigraphy [PDF]

Estonian Journal of Earth Sciences, 2011
Sediment samples from an outcrop in the near-shore area of Lake Ķūži (Vidzeme Heights, Central Latvia) were investigated using palaeobotanical (pollen and macrofossil analysis) and lithological (grain-size analysis) methods and accelerator mass ...
Tiiu Koff, Jaanus Terasmaa
doaj   +1 more source

Proxy comparison in ancient peat sediments: pollen, macrofossil and plant DNA [PDF]

Philosophical Transactions of the Royal Society B: Biological Sciences, 2015
We compared DNA, pollen and macrofossil data obtained from Weichselian interstadial (age more than 40 kyr) and Holocene (maximum age 8400 cal yr BP) peat sediments from northern Europe and used them to reconstruct contemporary floristic compositions at two sites. The majority of the samples provided plant DNA sequences of good quality with
Parducci, Laura, Väliranta, Minna, Salonen, J Sakari, Ronkainen, Tiina, Matetovici, Irina, Fontana, Sonia L, Eskola, Tiina, Sarala, Pertti, Suyama, Yoshihisa   +8 more
openaire   +3 more sources

Vast, overlooked peat, and organic soils in Brazil's Cerrado: carbon storage, dynamics, and stability

New Phytologist, EarlyView.
Summary Tropical peatlands are critical for climate mitigation due to their dual role as major carbon sinks and methane sources. In rainforests, high and stable rainfall supports peat accumulation in tropical climates. However, groundwater‐fed peatlands in seasonally dry tropical ecosystems remain poorly understood, despite their potential importance ...
Larissa S. Verona, Amy E. Zanne, Susan Trumbore, Paulo N. Bernardino, Guilherme M. Alencar, Thalia Andreuccetti, David Herrera‐Ramírez, João C. F. Cardoso, Demetrius Lira‐Martins, Guilherme G. Mazzochini, Natashi Pilon, Rafael S. Oliveira   +11 more
wiley   +1 more source