Mammal Community Structure through the Paleocene-Eocene Thermal Maximum
نویسندگان
چکیده
منابع مشابه
Sharply increased insect herbivory during the Paleocene-Eocene Thermal Maximum.
The Paleocene-Eocene Thermal Maximum (PETM, 55.8 Ma), an abrupt global warming event linked to a transient increase in pCO2, was comparable in rate and magnitude to modern anthropogenic climate change. Here we use plant fossils from the Bighorn Basin of Wyoming to document the combined effects of temperature and pCO2 on insect herbivory. We examined 5,062 fossil leaves from five sites positione...
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Carbon-isotope measurements (δC) of leaf-wax n-alkanes from the Paleocene–Eocene Thermal Maximum (PETM) in the Bighorn Basin, Wyoming, reveal a negative carbon isotope excursion (CIE) of 4–5‰, which is 1–2‰ larger than that observed in marine carbonate δC records. Reconciling these records requires either that marine carbonates fail to record the full magnitude of the CIE or that the CIE in pla...
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The Paleocene/Eocene thermal maximum (PETM) was a time of rapid global warming in both marine and continental realms that has been attributed to a massive methane (CH4) release from marine gas hydrate reservoirs. Previously proposed mechanisms for this methane release rely on a change in deepwater source region(s) to increase water temperatures rapidly enough to trigger the massive thermal diss...
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[1] Paleorecords show that the Paleocene-Eocene Thermal Maximum (PETM, 56 Ma) was associated with a large carbon cycle anomaly and global warming >5 K, which persisted for at least 50 kyr. Conventional carbon cycle/climate models that include a single initial carbon input pulse over 10 kyr fail to reproduce the long duration of the PETM without invoking additional, slow carbon release over more...
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Global ocean temperatures rapidly warmed by ~5°C during the Paleocene-Eocene Thermal Maximum (PETM; ~56 million years ago). Extratropical sea surface temperatures (SSTs) met or exceeded modern subtropical values. With these warm extratropical temperatures, climate models predict tropical SSTs >35°C-near upper physiological temperature limits for many organisms. However, few data are available t...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 2020
ISSN: 0003-0147,1537-5323
DOI: 10.1086/709819