Biogeochemistry of Earth before exoenzymes
Microorganisms that transform and oxidize organic material (that is, heterotrophs) play a
fundamental role in the geochemical cycling of key elements in the ocean. Through their …
fundamental role in the geochemical cycling of key elements in the ocean. Through their …
The geologic history of primary productivity
The rate of primary productivity is a keystone variable in driving biogeochemical cycles
today and has been throughout Earth's past. 1 For example, it plays a critical role in …
today and has been throughout Earth's past. 1 For example, it plays a critical role in …
The history of Earth's sulfur cycle
Sulfur is a critical component of Earth's surface evolution owing to its dynamic roles as a
redox buffer and nutrient as well as forming the basis for some of Earth's earliest …
redox buffer and nutrient as well as forming the basis for some of Earth's earliest …
Rates of seafloor and continental weathering govern Phanerozoic marine phosphate levels
Phosphate is an essential macronutrient for all organisms with a key role in setting levels of
marine primary productivity. Despite its importance for marine biogeochemical cycles and its …
marine primary productivity. Despite its importance for marine biogeochemical cycles and its …
Rapid timescale for an oxic transition during the Great Oxidation Event and the instability of low atmospheric O2
NF Wogan, DC Catling, KJ Zahnle… - Proceedings of the …, 2022 - National Acad Sciences
The Great Oxidation Event (GOE), arguably the most important event to occur on Earth since
the origin of life, marks the time when an oxygen-rich atmosphere first appeared. However, it …
the origin of life, marks the time when an oxygen-rich atmosphere first appeared. However, it …
Oxidative metabolisms catalyzed Earth's oxygenation
H Shang, DH Rothman, GP Fournier - Nature Communications, 2022 - nature.com
The burial of organic carbon, which prevents its remineralization via oxygen-consuming
processes, is considered one of the causes of Earth's oxygenation. Yet, higher levels of …
processes, is considered one of the causes of Earth's oxygenation. Yet, higher levels of …
Organic matter sulfurization and organic carbon burial in the Mesoproterozoic
Abstract Throughout the Proterozoic Era, sedimentary organic carbon burial helped set the
pace of global oxygenation and acted as a major modulator of atmospheric CO 2 and …
pace of global oxygenation and acted as a major modulator of atmospheric CO 2 and …
Carbon cycle inverse modeling suggests large changes in fractional organic burial are consistent with the carbon isotope record and may have contributed to the rise …
Abundant geologic evidence shows that atmospheric oxygen levels were negligible until the
Great Oxidation Event (GOE) at 2.4–2.1 Ga. The burial of organic matter is balanced by the …
Great Oxidation Event (GOE) at 2.4–2.1 Ga. The burial of organic matter is balanced by the …
[HTML][HTML] A sediment record of terrestrial organic matter inputs to Dongting Lake and its environmental significance from 1855 to 2019
Y Wang, Y Huang, J Tian, C Li, K Yu, M Zhang… - Ecological …, 2021 - Elsevier
The extensive anthropogenic activities and their potential impacts on lakes during the
Anthropocene could be recorded in the sediments. In this study, the composition of …
Anthropocene could be recorded in the sediments. In this study, the composition of …
Biogeochemical transformations after the emergence of oxygenic photosynthesis and conditions for the first rise of atmospheric oxygen
The advent of oxygenic photosynthesis represents the most prominent biological innovation
in the evolutionary history of the Earth. The exact timing of the evolution of oxygenic …
in the evolutionary history of the Earth. The exact timing of the evolution of oxygenic …