audibleecoscience Earth Headphones

Audibleecoscience is a database of podcasts on subjects related to global change biology. It is designed as a resource for the general public and for educators looking to assign "required listening" to their students. Reviews of each podcast and links to the original source have been provided by students taking the IB107 class at the University of Illinois. The database is fully text searchable or you can browse on your favorite subject...
facebook twitter rss
Historic and Paleo-biology

Marine Ecosystem Responses to Cenozoic Global Change

Media Source: Science
Program Name: Science Podcast
Show Name: Marine Ecosystem Responses to Cenozoic Global Change
Broadcast Year: 2013
Original Link: http://podcasts.aaas.org/science_podcast/SciencePodcast_130802.mp3

In a world of rapid climate change it is increasingly obvious that marine ecosystems will be altered. From examples in geological history we can determine how the world looked in the past when it existed with much higher concentrations of greenhouse gasses in the atmosphere. The oceans were warmer, the food chains were different, few coral reefs existed, and the ocean supported fewer large animals. How does this help with modern day dilemmas? We can use this information to determine the future. This rapid transition from a relatively cool climate to a relatively warm climate will cause marine ecosystems to look similar to earlier times in the Earth's history. Two climate states exist called the mean climate state and the transient climate state. The mean climate state refers to conditions that exist over millions of years. The transient climate state is currently what is happening right now and is defined as a rapid transition of climate conditions. The closest similarities for the projected future of marine ecosystems are climate transients. This took place during the early Cenozoic period of increased temperatures. Even though the oceans are projected to resemble the Earth’s past it will still have elements of our present “ice climate” in the future. Rising temperatures, ocean acidification, and rising sea levels will keep marine ecosystems changing for 100,000 years. Podcast starts from beginning and lasts until 12 min 52 sec


© 2013 - 2017 University of Illinois Board of Trustees