Article
Multidisciplinary Sciences
John M. O'Shea, Ashley K. Lemke, Brendan S. Nash, Elisabeth P. Sonnenburg, Jeffery R. Ferguson, Alex J. Nyers, Danielle J. Riebe
Summary: Obsidian, originating from the Rocky Mountains and the West, was an exotic exchange commodity in Eastern North America often found in caches and burials associated with Middle Woodland era Hopewell and later complexes. This paper reports on two obsidian flakes recovered from a submerged paleolandscape beneath Lake Huron, conclusively attributed to the Wagontire obsidian source in central Oregon, dating back to around 9,000 BP, representing the earliest and most distant occurrence of obsidian in Eastern North America.
Article
Forestry
Qian Hao, Shilei Yang, Zhaoliang Song, Zhengang Wang, Changxun Yu, Hailong Wang
Summary: By analyzing sediment records and reconstructing the climate, soil erosion, and vegetation development over the past 6800 years, this study reveals the driving factors of carbon accumulation in the forest-steppe ecotone. The results indicate that vegetation dynamics and local soil erosion are the main drivers of carbon accumulation rate.
Article
Green & Sustainable Science & Technology
Elke Kerstin Fischer, Tilmann Gahrau, Matthias Tamminga
Summary: The study investigates potential sources of microplastic emissions in the Lake Tollense catchment area through literature review, land-use analysis, and quantitative estimation, revealing that transport is the main source with an estimated annual emission volume of 14.5 tons of PM10 on state and federal roads.
Article
Geosciences, Multidisciplinary
Yongbo Wang, Xingqi Liu, Li Han, Zhenyu Ni, Xuezhi Ma, Yaru Wei, Zhen Li
Summary: Analyzing a continuous lacustrine sediment record from Lake Ayakum on the northern Tibetan Plateau covering the past 1500 years revealed signs of climate variation such as the presence of cold-phase mineral mirabilite and changes in coarse material content that reflected environmental conditions. The findings showed that late Holocene climate on the plateau experienced fluctuations in temperature and moisture, which were broadly consistent with records from western China and central Asia, indicating the influence of mid-latitude westerlies.
Article
Forestry
Yujie Liu, Zhongyi Zhan, Lili Ren, Sangzi Ze, Linfeng Yu, Qi Jiang, Youqing Luo
Summary: The study investigated the impact of Pine shoot beetle (PSB) outbreaks on Yunnan pine mortality in southwestern China. By using manipulated insect infestation experiments, suitable monitoring indicators were identified to help detect PSB attacks early. The study found that spectral data and models could accurately identify different levels of damage, and models like PLSR and RF were effective in estimating crown chlorophyll(a+b), relative water content, and crown shoot damage ratios. The research provides insight into the physiological and spectral signatures of early PSB attacks on crowns, offering useful tools for unmanned aerial vehicle (UAV) and satellite remote sensing to detect PSB infestation at the early stages.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Geosciences, Multidisciplinary
Jiantao Cao, Zhiguo Rao, Fuxi Shi, Ergang Lian, Guodong Jia
Summary: This study presents a 15,000-year record of GDGTs in a closed lake in northern China to address the debated issue of lake level and its inferred East Asian summer monsoon (EASM) evolution. Surface and downcore sediment data demonstrate that sedimentary GDGT-0 and brGDGTs are mainly from aquatic production, with higher contents in deeper water. The study shows a gradual increase in lake level from the late Pleistocene to the early Holocene, a peak during 9.5-5 ka BP, followed by a decreasing trend.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Shixin Huang, Xi Chun
Summary: Lake-level reconstruction using 22 quartz optical stimulated luminescence (OSL) ages revealed the gradual rise of Daihai lake level during the mid-Holocene, reaching a peak and expanding to approximately six times its present size. This expansion corresponded to maximum monsoon precipitation and intensity during this period, indicating the impact of regional climate changes on the lake system.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Environmental Sciences
Chao Guo, Yuzhen Ma, Hongwei Meng
Summary: This study presents new sedimentological and paleoecological data from Chaona Lake in northern China, providing insights into the climate and ecosystem evolution over the past 2800 years. The results show a general forest decline and climate deterioration during the Late Holocene, with oscillations and fluctuations in lake development and water circulation. The variability in climate can be explained by shifts in solar insolation and large-scale ocean-atmospheric coupling dynamics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
Jianru Cheng, Xianqiang Meng, Enlou Zhang, Qingfeng Jiang, Zhenyu Ni, Junfeng Ji
Summary: The study found a 12-cm-thick dolomite layer formed in Lake Sayram in Central Asia, consisting of calcium-rich dolomite crystals with irregular shapes. It is suggested that the dolomite may have formed under the influence of day and night temperature cycling in shallow lake water due to the local warming trend. This study provides evidence for abiotic dolomite formation at ambient temperature.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geography, Physical
Xiuxiu Ren, Xiaozhong Huang, Chong Huang, Tao Wang, Zhongwei Shen, Xiaosen Zhang, Guoqiang Ding, Ramamoorthy Ayyamperumal, Jun Zhang, Xuemei Chen
Summary: This study reconstructs the Holocene vegetation history of a mountain region in northern China using pollen and charcoal data. The results indicate significant human impacts on the natural landscapes of the study region since approximately 4.8 ka, characterized by a decrease in temperate deciduous forest coverage, increased sedimentary charcoal concentrations, and an increase in the number of archaeological sites.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Plant Sciences
Cecile C. Remy, Gwenael Magne, Normunds Stivrins, Tuomas Aakala, Hugo Asselin, Heikki Seppae, Tomi Luoto, Nauris Jasiunas, Adam A. A. Ali
Summary: Climate change is expected to increase wildfire activity in boreal ecosystems, threatening the carbon stocks of these forests. Understanding fire regimes and their relationship with climate and vegetation is crucial for anticipating the impact of climate change. However, the lack of long-term knowledge hinders this understanding in Fennoscandia.
JOURNAL OF ECOLOGY
(2023)
Article
Ecology
Madeleine Moyle, John F. Boyle, Richard C. Chiverrell
Summary: The study reconstructs trajectories in terrestrial phosphorus dynamics in the Northern Hemisphere during the Holocene using lake sediment records. Mountain sites show falling phosphorus supply following natural soil development, while lowland sites exhibit progressively increasing phosphorus supply due to historic agriculture. The reconstructions provide empirical data for constraining long-term landscape phosphorus cycling models and identify pre-disturbance baselines for lake water quality, essential for target-driven lake management.
Article
Environmental Sciences
Jiasheng Li, Shuai Li, Can Liu, Donggang Guo, Quanxi Zhang
Summary: By conducting a meta-analysis on 101 forest gap cases and 69 slope aspect cases, it was found that forest gaps and shady slopes have significant positive effects on the regeneration density of Chinese pine. The study also revealed that forest gaps have the greatest impact on regeneration density in plantations, while shady slopes have a significant influence in pure Chinese pine stands. Additionally, the edges of gaps are well-suited for regeneration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biology
Ebuka Canisius Nwosu, Achim Brauer, Marie-Eve Monchamp, Sylvia Pinkerneil, Alexander Bartholomaeus, Martin Theuerkauf, Jens-Peter Schmidt, Kathleen R. Stoof-Leichsenring, Theresa Wietelmann, Jerome Kaiser, Dirk Wagner, Susanne Liebner
Summary: Analysis of sedimentary DNA in a German lake reveals a spike in cyanobacteria abundance during the Bronze Age and the past century due to human activities. This high-resolution molecular analysis provides evidence that humans have been impacting lake ecology for millennia. Managing aquatic systems today requires awareness of the long-term legacy of human influence.
COMMUNICATIONS BIOLOGY
(2023)
Article
Environmental Sciences
Dionysios Stamatis, Alexandros Emmanouilidis, Alessia Masi, Adam Izdebski, Pavlos Avramidis
Summary: This research presents the paleoenvironmental evolution of a drained lake at the Lousoi plateau (northern Peloponnese) for the past 10,000 years, based on the analysis of a 7 m depth core. The study reveals that the lake experienced increased water levels and wet climatic conditions from 10,900 to 7700 cal BP, with a dry pulse at 9400 cal BP. The transition to more shallow waters and a more oxygenated phase occurred at 8200 cal BP. In the Late Holocene period, the lake was highly affected by pedogenic processes, making it difficult to distinguish paleoclimatic/paleoenvironmental signals.
Article
Biodiversity Conservation
Jill E. Harvey, Marko Smiljanic, Tobias Scharnweber, Allan Buras, Anna Cedro, Roberto Cruz-Garcia, Igor Drobyshev, Karolina Janecka, Aris Jansons, Ryszard Kaczka, Marcin Klisz, Alar Laanelaid, Roberts Matisons, Lena Muffler, Kristina Sohar, Barbara Spyt, Juliane Stolz, Ernst van der Maaten, Marieke van der Maaten-Theunissen, Adomas Vitas, Robert Weigel, Juergen Kreyling, Martin Wilmking
GLOBAL CHANGE BIOLOGY
(2020)
Article
Biodiversity Conservation
Martin Wilmking, Marieke van der Maaten-Theunissen, Ernst van der Maaten, Tobias Scharnweber, Allan Buras, Christine Biermann, Marina Gurskaya, Martin Hallinger, Jelena Lange, Rohan Shetti, Marko Smiljanic, Mario Trouillier
GLOBAL CHANGE BIOLOGY
(2020)
Article
Environmental Sciences
Allan Buras, Florian Hirsch, Anna Schneider, Tobias Scharnweber, Ernst van der Maaten, Roberto Cruz-Garcia, Thomas Raab, Martin Wilmking
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Geosciences, Multidisciplinary
Knut Kaiser, Thomas Schneider, Mathias Kuester, Elisabeth Dietze, Alexander Fuelling, Susann Heinrich, Christoph Kappler, Oliver Nelle, Manuela Schult, Martin Theuerkauf, Sebastian Vogel, Anna Maartje de Boer, Andreas Boerner, Frank Preusser, Matthias Schwabe, Jens Ulrich, Michael Wirner, Oliver Bens
Article
Ecology
Wouter Beukema, Jesse Erens, Vanessa Schulz, Gwij Stegen, Annemarieke Spitzen- van der Sluijs, Tariq Stark, Arnaud Laudelout, Thierry Kinet, Tom Kirschey, Marie Poulain, Claude Miaud, Sebastian Steinfartz, An Martel, Frank Pasmans
Summary: The study used a hierarchical modeling framework to describe the landscape epidemiology of Bsal outbreak sites, revealing associations between Bsal presence and humid, cool climates as well as outbreaks occurring in areas with low landscape heterogeneity and slope steepness. Additionally, there was found to be a correlation between Bsal presence and high trail density, suggesting that human-mediated spread could elevate the risk of spillover between populations.
ECOLOGICAL APPLICATIONS
(2021)
Article
Engineering, Civil
Gunnar Lischeid, Ralf Dannowski, Knut Kaiser, Gunnar Nuetzmann, Jorg Steidl, Peter Stuve
Summary: The study revealed that inconsistent trends in hydrological systems affected by climate change could be attributed to different degrees of low-pass filtering of the groundwater recharge signal, resulting in apparent monotonic trends over time. This phenomenon is likely due to frequency-dependent damping of the input signal, which has been found in various natural processes, including hydrological systems.
JOURNAL OF HYDROLOGY
(2021)
Article
Geography, Physical
Joerg Voelkel, Oliver Bens, Marie Eden, Lydia Krauss, Andrew S. Murray, Klaus Heine
Summary: Dryland slopes, fluvial fans, and terraces play important roles in reconstructing paleoclimatic driven landscape development in Southern Africa. This study focuses on a dryland drainage system within a limited regional catchment area, aiming to understand its behavior unaffected by distant meteorological events. The results highlight the potential of fluvial and lacustrine sediments in the Naukluft Mts. foreland for late Quaternary geoarchives.
ZEITSCHRIFT FUR GEOMORPHOLOGIE
(2021)
Article
Geography, Physical
Martin Theuerkauf, Theresa Blume, Achim Brauer, Nadine Draeger, Peter Feldens, Knut Kaiser, Christoph Kappler, Frederike Kastner, Sebastian Lorenz, Jens-Peter Schmidt, Manuela Schult
Summary: The study found that land cover changes have an impact on lake-level fluctuations during the Holocene, with most fluctuations being unrelated to climatic changes and instead related to natural and anthropogenic land cover changes. The observed amplitudes of lake-level fluctuations are larger than expected from climatic changes alone, emphasizing the importance of considering land cover changes in lake catchments in the interpretation of past lake-level fluctuations.
Article
Plant Sciences
Jan Tumajer, Tobias Scharnweber, Marko Smiljanic, Martin Wilmking
Summary: Understanding the effects of temperature and moisture on radial growth is crucial for assessing the impacts of climate change on carbon and water cycles. This study analysed sub-daily growth dynamics of 35 trees and found that the growth patterns were more influenced by vapor pressure deficit (VPD) than temperature, and different tree species exhibited different growth patterns.
Article
Environmental Sciences
Christoph Zielhofer, Johannes Schmidt, Niklas Reiche, Marie Tautenhahn, Helen Ballasus, Michael Burkart, Anja Linstaedter, Elisabeth Dietze, Knut Kaiser, Natascha Mehler
Summary: Instrumental data shows that groundwater and lake levels in Northeast Germany have been decreasing, with an accelerated rate in recent years. Besides global warming, the direct impact of human activities on the local water balance is suspected to be a contributing factor. This study quantitatively reconstructs the surface water areas in the Lower Havel Inner Delta and Lake Gulpe in Brandenburg using historical and modern maps from 1797 to 2020. The major finding is a continuous decline in surface water areas by approximately 30% since the pre-industrial period. It is suggested that comprehensive measures in Lower Havel hydro-engineering correspond to the groundwater lowering, and large-scale melioration measures in the upstream wetlands may have amplified the decline in downstream surface water areas.
Article
Anthropology
Knut Kaiser, Johann Friedrich Tolksdorf, Anna Maartje de Boer, Christoph Herbig, Falk Hieke, Marek Kasprzak, Petr Kocar, Libor Petr, Matthias Schubert, Frank Schroder, Alexander Fulling, Christiane Hemker
Summary: Colluvial sediments originating from soil erosion on slopes in the Central European Erzgebirge Mountains are evidence of human impact dating back to the medieval to post-medieval periods, related to mining and early industrial activities. Pollen data indicates a decline in mountain forests in the late twelfth to fifteenth centuries, with an increase of pioneer trees and spruce at the expense of fir and beech. The primary cause of soil erosion and colluvial deposition in the investigated sites is attributed to medieval to post-medieval mining and other early industrial activities.
ARCHAEOLOGICAL AND ANTHROPOLOGICAL SCIENCES
(2021)
Article
Forestry
Monika Wulf, Knut Kaiser, Almut Mrotzek, Lina Geiges-Erzgraber, Lars Schulz, Irina Stockmann, Thomas Schneider, Christoph Kappler, Oliver Bens
Summary: The sharp decline in seminatural areas worldwide is indisputable, and restoring ecosystems or landscapes requires reliable reference sites. A case study in northeast Germany utilized historical maps, field investigations, and other methods to reconstruct vegetation and soil dynamics over centuries, confirming the preservation of a specific forest in good ecological conditions for at least 250 years. This multisource approach can be used to identify potential reference sites for ecosystem or landscape restoration.
IFOREST-BIOGEOSCIENCES AND FORESTRY
(2021)
Article
Geography
Marie Eden, Oliver Bens, Sarah Betz, Joerg Voelkel
Article
Engineering, Civil
Yulia Kharanzhevskaya, Anton Maloletko, Anna Sinyutkina, Marek Gielczewski, Tom Kirschey, Robert Michalowski, Dorota Miroslaw-Swiatek, Tomasz Okruszko, Pawel Osuch, Pawel Trandziuk, Mateusz Grygoruk
JOURNAL OF HYDROLOGY
(2020)
Article
Ecology
Mario Trouillier, Marieke van der Maaten-Theunissen, Tobias Scharnweber, Martin Wilmking
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2020)