For a short time interval (c. 1.2 Myr) during the early middle Eocene (~ 49 Myr), the central Arctic Ocean was episodically densely covered by the freshwater fern Azolla, implying sustained freshening of surface waters. Coeval Azolla fossils in neighboring Nordic seas were thought to have been sourced from the Arctic. The recognition of a different Azolla species in the North Sea raised doubts about this hypothesis. Here we show that no less than five Azolla species had coeval blooms and spread in the Arctic and NW European regions. A likely trigger for these unexpected Azolla blooms is high precipitation prevailing by the end of the warmest climates of the Early Eocene Climatic Optimum (EECO)
The opening and closing of ocean gateways affects the global distribution of heat, salt, and moistur...
International audienceDuring the Paleocene–Eocene, the Earth experienced the warmest conditions of t...
During the Paleocene–Eocene, the Earth experienced the warmest conditions of the Cenozoic and reduce...
For a short time interval (c. 1.2 Myr) during the early middle Eocene (~49 Myr), the central Arctic ...
It has been suggested, on the basis of modern hydrology and fully coupled palaeoclimate simulations,...
It has been suggested, on the basis of modern hydrology and fully coupled palaeoclimate simulations,...
The high abundances and cyclic distribution of remains of the freshwater fern Azolla in early-Middle...
The high abundances and cyclic distribution of remains of the freshwater fern Azolla in early-Middle...
Three new species of the freshwater fern Azolla are described from Eocene marine deposits of the Arc...
With the realization that the Arctic Ocean was covered with enormous quantities of the aquatic float...
It has been suggested, on the basis of modern hydrology and fully coupled palaeoclimate simulations,...
In order to understand the physicochemical mechanisms that could explain the massive growth of Azoll...
Premise of research. Reproductive structures of modern genera of heterosporous water ferns (Marsilea...
<div><p>In order to understand the physicochemical mechanisms that could explain the massive growth ...
Fossil plant remains are preserved within the deposits of the Eocene Aspelintoppen Formation on Sval...
The opening and closing of ocean gateways affects the global distribution of heat, salt, and moistur...
International audienceDuring the Paleocene–Eocene, the Earth experienced the warmest conditions of t...
During the Paleocene–Eocene, the Earth experienced the warmest conditions of the Cenozoic and reduce...
For a short time interval (c. 1.2 Myr) during the early middle Eocene (~49 Myr), the central Arctic ...
It has been suggested, on the basis of modern hydrology and fully coupled palaeoclimate simulations,...
It has been suggested, on the basis of modern hydrology and fully coupled palaeoclimate simulations,...
The high abundances and cyclic distribution of remains of the freshwater fern Azolla in early-Middle...
The high abundances and cyclic distribution of remains of the freshwater fern Azolla in early-Middle...
Three new species of the freshwater fern Azolla are described from Eocene marine deposits of the Arc...
With the realization that the Arctic Ocean was covered with enormous quantities of the aquatic float...
It has been suggested, on the basis of modern hydrology and fully coupled palaeoclimate simulations,...
In order to understand the physicochemical mechanisms that could explain the massive growth of Azoll...
Premise of research. Reproductive structures of modern genera of heterosporous water ferns (Marsilea...
<div><p>In order to understand the physicochemical mechanisms that could explain the massive growth ...
Fossil plant remains are preserved within the deposits of the Eocene Aspelintoppen Formation on Sval...
The opening and closing of ocean gateways affects the global distribution of heat, salt, and moistur...
International audienceDuring the Paleocene–Eocene, the Earth experienced the warmest conditions of t...
During the Paleocene–Eocene, the Earth experienced the warmest conditions of the Cenozoic and reduce...