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On an island in the Arctic Sea, paleontologists found the remains of an ancient tropical forest estimated to be 385 million years old.
The fossil forests, with tree stumps preserved in place, were found in Svalbard, a Norwegian archipelago situated in the Arctic Ocean. They were identified and described by Dr Chris Berry of the School of Earth and Ocean Sciences.
380 million years ago, the continents were in vastly different places. The solid part of the Earth that we live on is broken into sections called tectonic plates. Over time, these plates move, pushed around by the Earth’s mobile interior. Svalbard was near the equator 380 million years ago.
The fossilized tree stumps found by the researchers were lycopsids, early trees that are related to club moss.
Researchers think that the explosive growth of these trees during this period helped to reduce the amount of carbon dioxide in the atmosphere.
“During the Devonian Period, it is widely believed that there was a huge drop in the level of carbon dioxide in the atmosphere, from 15 times the present amount to something approaching current levels,” Berry said in a statement. “The evolution of tree-sized vegetation is the most likely cause of this dramatic drop in carbon dioxide because the plants were absorbing carbon dioxide through photosynthesis to build their tissues, and also through the process of forming soils.”
Today, Svalbard’s frigid temperatures have made it very attractive to biologists, who took advantage of the cool climate to refrigerate the Doomsday Seed Vault, a repository of seed samples from around the world. The first withdrawal from the vault was made this year in response to the ongoing conflict in Syria, and surely more will come soon as climate change continues to impact both wild plants and agricultural crops around the world.
“It’s amazing that we’ve uncovered one of the very first forests in the very place that is now being used to preserve the Earth’s plant diversity,” Berry said.
Agencies/Canadajournal
