Freshwater ecosystem collapse and mass mortalities at the Paleocene-Eocene thermal maximum

Chen, Zuoling; Ding, Zhongli; Sun, Jimin; Yang, Shiling; Ni, Xijun; Xu, Wang; Wang, Yongli; Zhang, Jiangyong; He, Wei

doi:10.1016/j.gloplacha.2023.104175

Cited by 3 publications

(1 citation statement)

References 63 publications

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“…The PETM lasted less than 200 kyr, but it resulted in a global temperature increase of about 5-8 • C [9,10], accompanied by a negative carbon isotope excursion (CIE) of 2-7‰ [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. There is evidence that the PETM led to a significant increase in precipitation at the low and middle latitudes of East Asia [16][17][18]. The latest research results challenge the view that East Asia was in a hot and arid climate for a long time in the early Paleogene.…”

Section: Introductionmentioning

confidence: 99%

The Geochemical Characteristics and Environmental Implications of the Paleocene–Eocene in the Jiangling Depression, Southwestern Jianghan Basin

Yan,

Wang,

Chen

et al. 2024

Minerals

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Various isotopic and palynological indicators have shown interspersed periods of aridity and humidity for the late Paleocene to early Eocene in central China, so the paleoclimate conditions remain unclear. This research investigates the environmental characteristics of a saline lake in the Jiangling depression, southwestern Jianghan Basin, from the Paleocene to the Eocene, using bulk-rock geochemistry in a 1280 m sediment core. The ratios of FeO/MnO, Al2O3/MgO, and C-value indicate a semi-humid to semi-arid climate in the early–middle Paleocene. There was a rapid shift to a humid climate during the late Paleocene to early Eocene, following a short time of intense dryness. The Eocene climate was arid, but experienced intermittent humidity. The variation trend of the CIA, CIW and PIA was similar to that of FeO/MnO, Al2O3/MgO, and the C-value, so chemical weathering of the surrounding rocks was controlled by climate change. The lake redox conditions in the Jiangling depression from the Paleocene to the Eocene were reconstructed using the ratios of U/Th, Ni/Co, and V/Cr. During humidity and alternations of aridity and humidity, the lake water received external water input, resulting in weak stratification, so the sediments were in oxidizing conditions. During aridity, lakes become endorheic, leading to sediments forming in reduced conditions. The salinity of the lake in the Jiangling depression from the Paleocene to the Eocene was determined through analysis of sedimentary sequences and the trend of the Sr/Ba ratio. In the early–middle Paleocene, lake salinity varied greatly. From the late Paleocene to the early Eocene, lake salinity decreased. In the Eocene, lake salinity increased and halite precipitated, but lake salinity finally decreased due to a humid climate. During the late Paleocene–early Eocene, the occurrence of multiple humid climates in the Jiangling depression were not merely regional effects. The most significant humidity was caused by a global hyperthermal (PETM), which caused a huge increase in precipitation in the whole of East Asia and even in low latitudes around the world.

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Section: Introductionmentioning

confidence: 99%

The Geochemical Characteristics and Environmental Implications of the Paleocene–Eocene in the Jiangling Depression, Southwestern Jianghan Basin

Yan,

Wang,

Chen

et al. 2024

Minerals

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Mechanisms of terrestrial organic matter accumulation across the Paleocene-Eocene thermal maximum in the Jianghan Basin, Central China

Fan,

Wang,

Teng

et al. 2024

Palaeogeography, Palaeoclimatology, Palaeoecology

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Islamic Environmental Stewardship: A Sociological Approach to Hadith and Legal Frameworks for Ecological Responsibility

Salman,

Asmanto

2024

volksgeist

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This research analyzes the approach of Islamic law to environmental management through the study of Hadith from a sociological approach. The environment is an essential issue in the modern world, with various challenges related to nature conservation. Islamic law, mainly through the Hadith, provides moral and legal guidance on human responsibility towards the environment. This study explores how the Hadiths provide the basis for balanced and sustainable environmental management and how these principles can be analyzed using a legal sociology approach: the interaction between law and society. Using a qualitative method that combines the study of Hadith texts with sociological analysis, the study found a unity between Islamic law and social norms that promote environmental sustainability. Hadith underscores the importance of individual and collective responsibility in maintaining the balance of nature. At the same time, legal sociology highlights the role of community and social structure in implementing environmental rules. The results of this research aim to gain a deeper insight into the relevance of Islamic teachings in dealing with global environmental issues and to become the basis for developing a more holistic and integrated policy to preserve nature.

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Freshwater ecosystem collapse and mass mortalities at the Paleocene-Eocene thermal maximum

Cited by 3 publications

References 63 publications

The Geochemical Characteristics and Environmental Implications of the Paleocene–Eocene in the Jiangling Depression, Southwestern Jianghan Basin

The Geochemical Characteristics and Environmental Implications of the Paleocene–Eocene in the Jiangling Depression, Southwestern Jianghan Basin

Mechanisms of terrestrial organic matter accumulation across the Paleocene-Eocene thermal maximum in the Jianghan Basin, Central China

Islamic Environmental Stewardship: A Sociological Approach to Hadith and Legal Frameworks for Ecological Responsibility

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