Article
Microbiology
Angela L. Creevy, David M. Wilkinson, Roxane Andersen, Richard J. Payne
Summary: The extensive drainage of peatlands in north-west Europe for afforestation has led to changes in carbon balance and biodiversity value. Large-scale restoration projects aim to restore the hydrological conditions and promote active peat growth. This study investigated the response of testate amoebae assemblages and vegetation composition after tree removal on a drained raised bog. The results show that microbial recovery is a slow process, with vegetation composition responding faster than the microbial assemblages.
EUROPEAN JOURNAL OF PROTISTOLOGY
(2023)
Article
Environmental Sciences
Kevin D. Barrett, Patricia Sanford, Sara C. Hotchkiss
Summary: Peatland complexes in the humid highlands of Hawai'i are crucial for biodiversity and freshwater resources. Analysis of testate amoebae and Cladocera in Hawaiian montane peatlands on Kohala revealed the importance of surface moisture in controlling species distribution. The study provides insights into the paleohydrological history of Hawaiian peatlands and the sensitivity of testate amoeba composition to changing environmental conditions.
JOURNAL OF PALEOLIMNOLOGY
(2021)
Article
Ecology
Yangmin Qin, Daniel Puppe, Lihua Zhang, Rui Sun, Pengde Li, Shucheng Xie
Summary: The policy and practice of ecological restoration and conservation in China have yielded significant results, with Sphagnum moss playing a key role in expanding wetland areas. Testate amoebae have been used as ecological indicators in various habitats due to their sensitivity to environmental change. The study found higher abundance, taxon richness, and diversity of testate amoebae in Sphagnum growing farmland plots compared to natural Sphagnum plots, with protozoic Si pools increasing with Sphagnum growing time but negatively correlated with taxon richness and diversity. These results highlight the importance of environmental restoration policies and testate amoeba communities for Si cycling in peatland restoration areas.
Article
Environmental Sciences
Xiaoman Lu, Xiaoyang Zhang, Fangjun Li, Lun Gao, Laura Graham, Yenni Vetrita, Bambang H. Saharjo, Mark A. Cochrane
Summary: Canal drainage has significant impacts on smoke aerosol emissions in Indonesian fires, with peatland fires emitting more smoke aerosols and increasing significantly as water table depth decreases. These findings support the Indonesian government's peatland restoration policies.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Soil Science
Lihong Song, Liang Chang, Shaoqing Zhang, Yongjing Dou, Donghui Wu
Summary: The study found that changes in water table depth caused by experimental warming affected the testate amoebae community in peatlands, which could have consequences for the stability of the microbial food web and carbon cycling.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Forestry
Ari Lauren, Marjo Palviainen, Samuli Launiainen, Kersti Leppa, Leena Stenberg, Inaki Urzainki, Mika Nieminen, Raija Laiho, Hannu Hokka
Summary: Drainage is crucial in peatland forest management, and the SUSI simulator accurately predicts water table and stand growth under different conditions. Stand growth is mainly limited by potassium supply and oxygen availability in Sphagnum peats. The model application demonstrates the impact of ditch network maintenance on stand growth under different ditch depths.
Article
Geography, Physical
Majed N. Turkistani, Eduard G. Reinhardt, David A. Kynaston, Janok P. Bhattacharya
Summary: This study investigates the associations between ancient deltaic environments and foram-iniferal and testate amoebae assemblages and finds clear relationships between test morphology and depositional environment.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Soil Science
Lauri Ikkala, Anna-Kaisa Ronkanen, Olli Utriainen, Bjorn Klove, Hannu Marttila
Summary: This study combined historical soil elevation data and new lidar data to investigate subsidence in riparian peatland on the west coast of Finland, revealing an average subsidence rate of 5.15-9.47 mm per year within the last 24-51 years. The results suggest that the increasing flooding of cultivated fields is mainly attributed to soil subsidence near rivers, rather than increased flooding occurrence in river systems.
SOIL & TILLAGE RESEARCH
(2021)
Article
Environmental Sciences
Jean Claude Ndayishimiye, Tian Lin, Pascaline Nyirabuhoro, Gan Zhang, Wenjing Zhang, Yuri Mazei, Hossein Ganjidoust, Jun Yang
Summary: This study focused on examining the impact of human activities on chemical pollutants influx and environmental transformations in a large subtropical reservoir in south China. The research used a multi-proxy approach based on sediment core analysis and found that the development of the reservoir experienced two distinct stages, influenced by both anthropogenic sources and climatic factors. The study highlighted the significant relationship between testate amoebae community dynamics and environmental conditions, indicating a stronger impact of human disturbance on the ecosystem compared to natural environmental changes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biochemistry & Molecular Biology
Ruben Gonzalez-Miguens, Milcho Todorov, Quentin Blandenier, Clement Duckert, Alfredo L. Porfirio-Sousa, Giulia M. Ribeiro, Diana Ramos, Daniel J. G. Lahr, David Buckley, Enrique Lara
Summary: In this study, the authors used Arcellinida testate amoebae as a model to test the paradigm of morphological stasis in protists. The results showed a lack of conservatism in shell outlines and widespread morphological convergences between far-related taxa. In addition, the authors revised the systematics and established a new infraorder and two new genera.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2022)
Article
Environmental Sciences
M. A. Davies, J. W. McLaughlin, M. S. Packalen, S. A. Finkelstein
Summary: Wetlands are the largest natural source of methane, yet the roles of source region and paleoclimate in explaining the variability in Holocene atmospheric methane concentrations remain poorly constrained. The study on Hudson Bay Lowlands (HBL) shows that total methane flux is closely related to the increasing area of land emerging from below sea level in the Middle Holocene, and due to lower evapotranspiration in a wetter and cooler climate in the Late Holocene, methane fluxes remained high.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Biodiversity Conservation
Thomas G. Sim, Graeme T. Swindles, Paul J. Morris, Andy J. Baird, Dan J. Charman, Matthew J. Amesbury, Dave Beilman, Alex Channon, Angela V. Gallego-Sala
Summary: This study utilized new transfer functions to reconstruct water-table depth (WTD) and pH in Svalbard peatlands, enabling a greater understanding of the long-term impact of climate change on these ecosystems.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
K. E. Giesbrecht, D. E. Varela
Summary: The study reveals significant variations in silica concentrations and production rates in the Pacific Arctic Region, with diatoms playing a key role in primary productivity and nitrate utilization. Irradiance and availability of silicic acid have significant effects on silica production rates, with silicic acid limitation observed in all hot spots.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Article
Paleontology
Nawaf A. Nasser, Braden R. B. Gregory, David Singer, R. Timothy Patterson, Helen M. Roe
Summary: Testate lobose amoebae of the order Arcellinida are a diverse group of shelled protists found in various environments. The family Difflugidae includes many species and subspecies, with molecular evidence suggesting that test morphology is more important in categorizing distinct taxa than test composition. The reclassification of Difflugia bidens as the type species of genus Erugomicula highlights the importance of test morphology in taxonomy.
PALAEONTOLOGIA ELECTRONICA
(2021)
Article
Biodiversity Conservation
Rafael Carballeira, Xabier Pontevedra-Pombal
Summary: Testate amoebae are important bioindicators of Sphagnum peatland ecosystems, which are threatened wetland types with a delicate biogeochemical balance. A study on chemical parameters and testate amoebae diversity in the western Iberian Peninsula revealed an inverse relationship between diversity and conservation status, influenced by anthropogenic activities and geographical patterns of disturbance.
Editorial Material
Multidisciplinary Sciences
Biao Chang, Chao Li, Thomas J. Algeo, Timothy W. Lyons, Wei Shi, Meng Cheng, Genming Luo, Zhenbing She, Shucheng Xie, Jinnan Tong, Maoyan Zhu, Junhua Huang, Ian Foster
Article
Agronomy
Joerg Schaller, Daniel Puppe, Jaqueline Busse, Silvia Paasch, Ofir Katz, Eike Brunner, Danuta Kaczoreck, Michael Sommer
Summary: Research shows that the silicification patterns in wheat leaves vary significantly between different growth stages and do not continuously increase. Newly formed leaf tissues have relatively low silicon concentrations, which increase over time. The silica bodies and trichomes exhibit a high condensation state, indicating high rigidity.
Article
Environmental Sciences
Daniel Puppe, Martin Leue, Michael Sommer, Jorg Schaller, Danuta Kaczorek
Summary: This study utilized various analytical methods to investigate the fluorescence behavior of modern phytoliths. The results revealed that the fluorescence of phytoliths is influenced by temperature and molecular structure. Organic compounds cause fluorescence at low temperatures, while molecular changes in phytolith silica induce fluorescence at high temperatures. The fluorescence is caused by clusterization-triggered emissions, which result from overlapping electron clouds forming non-conventional chromophores. Additionally, the extractable phytoliths were found to be dominated by lumen phytoliths.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Meteorology & Atmospheric Sciences
Xianyu Huang, Hongbin Zhang, Michael L. Griffiths, Bingyan Zhao, Francesco S. R. Pausata, Clay Tabor, Junwu Shu, Shucheng Xie
Summary: This study presents a peat record from southeastern China that provides insight into the evolution of the East Asian summer monsoon (EASM) over the past 14,000 years. The results show varying strength and wetness of the EASM during different periods of the Holocene, with influences from factors such as ice-sheet meltwater and other drivers of the monsoon and hydroclimate.
Article
Soil Science
Yangmin Qin, Daniel Puppe, Hui Li, Hongkai Li, Yuri Mazei, Andrey N. Tsyganov, Baiying Man, Xianyu Huang, Yansheng Gu, Shucheng Xie
Summary: Anthropogenic peatland degradation affects the TA community and protozoic biosilicification, leading to a decline in biodiversity and an unexpected increase in biosilicification. This finding provides new insights into the interaction between soil microbial diversity and biogeochemical silicon cycling.
Article
Engineering, Civil
Hongye Liu, Yansheng Gu, Jiwen Ge, Zicheng Yu, Xiangnan Xu, Zhiqi Zhang, Shenggao Cheng, Shucheng Xie
Summary: This study focuses on the relationship between peatland ecology and water table depth in Dajiuhu Peatland. The findings indicate that water table depth is crucial to peatland ecological functions, with a critical level of 30 cm. Beyond this depth, methane emissions decrease, carbon dioxide emissions increase, and carbon sequestration is weakened.
JOURNAL OF HYDROLOGY
(2022)
Correction
Engineering, Civil
Hongye Liu, Yansheng Gu, Jiwen Ge, Zicheng Yu, Xiangnan Xu, Zhiqi Zhang, Shenggao Cheng, Shucheng Xie
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Jiaheng Shen, Yi Ge Zhang, Huan Yang, Shucheng Xie, Ann Pearson
Summary: This study presents a high-resolution record of atmospheric CO2 and marine phytoplankton community structure during the Permian-Triassic mass extinction. The findings suggest that the first extinction was associated with a minimum CO2 concentration, followed by a rapid rise to a prolonged high CO2 interval. Cyanobacteria played an increasingly dominant role in marine export production between the two extinction events.
Article
Geochemistry & Geophysics
Zhiguo Li, Xianyu Huang, B. David A. Naafs, Canfa Wang, Shucheng Xie
Summary: The BNA(15) biomarker proxy shows moderate correlation with growth temperature in surface peat samples and strong positive correlation with mean annual air temperature in Chinese peatlands. However, caution should be taken when applying this index in different peatlands and environments.
ORGANIC GEOCHEMISTRY
(2022)
Article
Plant Sciences
Yansheng Gu, Yuenan Li, Hongye Liu, Xuan Liu, Shucheng Xie, Junhua Huang
Summary: This study reconstructed a high-resolution history of temperature and aridity change in the Poyang Lake region over the past 1000 years. The results revealed three phases of paleoenvironmental changes and confirmed the connection between solar irradiance, ENSO activity, and monsoon precipitation in East China. The occurrences of droughts and floods influenced by ENSO-related monsoon precipitation significantly affected the sedimentary environment and human activities.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Xiuchang Zhu, Yongbo Wang, Xinyue Dang, Huan Yang, Shucheng Xie
Summary: This study conducted a two-year monitoring of GDGTs in Lake Liangzi in central China and found that the archaeal isoprenoid GDGTs were mainly produced in situ in the river-lake systems, while the bacterial branched GDGTs were affected by soil input to some extent, depending on the distance to the lakeshore. The study also revealed that the variation of isoGDGTs indicates in situ production under anoxic conditions in lake water and the increase in GDGT-0/Cren ratio and GDGT concentration might be diagnostic of flooding events in ancient times.
JOURNAL OF EARTH SCIENCE
(2022)
Editorial Material
Biology
Daniel Puppe, Panayiotis G. Dimitrakopoulos, Baorong Lu
Article
Environmental Sciences
Daniel Puppe, Danuta Kaczorek, Christian Buhtz, Joerg Schaller
Summary: Several methods are used to determine silicon (Si) contents in plant materials, but none of them has become prevalent due to their advantages and drawbacks. Alkaline extraction using chemicals like sodium carbonate is widely used because it is simple and cheap. However, there is a lack of comprehensive comparison between different alkaline extractions and understanding of the relationship between Si content in plants and soil silicon availability. This study compared different alkaline extractions and found that Tiron was more efficient in extracting Si compared to sodium carbonate. Phytolith contents in plant samples were strongly correlated to Si contents obtained from extractions, especially in husk samples.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Editorial Material
Geochemistry & Geophysics
Shucheng Xie
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Environmental Sciences
Mengyu Wang, Chaoyong Hu, Yuhui Liu, Lianlian Li, Shucheng Xie, Kathleen Johnson
Summary: By studying precipitation variability in East China over the past 1150 years, it was found that the strength of the Asian monsoon is closely linked to solar variability, while rainfall patterns are driven by the Pacific Decadal Oscillation and Atlantic Multidecadal Oscillation.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
