CONSEQUENCES

Exploring the consequences of global climate change and human activities on the health of ecological systems.

Browsing Posts tagged human activity

While this post is not exactly related to climate change, it does relate to the consequences of human activities on a very critical component of the biosphere namely our oceans. Plastic debris in the world’s oceans is of a particular concern of mine, a very profound concern in fact and it should be a concern of everyone because ocean plastic pollution is killing the most significant of earth’s ecological systems, our oceans. Note that I do not write ‘the oceans’ but ‘our oceans’ and yes ‘we’ are all responsible for them!

North Atlantic Subtropical Gyre

Sea Education Association (SEA) is conducting the first federally-funded research expedition dedicated solely to examining the accumulation of plastic debris in the North Atlantic Ocean.

On June 10, the Plastics at SEA: North Atlantic Expedition set sail to expand upon 25 years’ worth of data previously collected by SEA that reveals a region of extensive plastic pollution in a narrow latitude band in the western North Atlantic Ocean called the North Atlantic Subtropical Gyre, the Atlantic Ocean’s version of the region of the eastern North Pacific Ocean dubbed the “Great Pacific Garbage Patch.”

SSV Corwith Cramer

The cruise, which ended on July 14, took place onboard the SSV Corwith Cramer, SEA’s 134-foot brigantine-rigged sailing oceanographic research vessel. The crew consists of 11 professional mariners and 22 additional participants.

This expedition was funded by the National Fish and Wildlife Foundation, the National Oceanic and Atmospheric Administration Marine Debris Program and Sea Education Association, and is conducted in collaboration with Woods Hole Oceanographic Institution and Woods Hole Sea Grant. The Henry L. and Grace Doherty Foundation and the American Chemistry Council provided additional funding to support educational outreach for this project.

Source: Sea Education Association (SEA)

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Commentary: The fact that mankind has been able to pollute the oceans to the degree we have, not to mention the remaining land masses, is for me probably the most discouraging thing I can imagine. I can recall back in my days in college in the late ’70′s dreaming of how I, as a biologist, would one day travel on expedition to some of the planets most wonderful habitats. Yes, I did lead several research expeditions but as time went on I began to witness more and more lose to pollution and devastation. I find the percentage of that loss, in just my own life time, to be ever so disheartening. It is a travesty I fear from which we will never truly recover. Now, I am not a doomsday type of person and I am not a pessimist, quite the contrary. But I fear that humans as a species have crested the top of the bell shaped culture curve in the petri dish that is the earth.

This is not a message to give up hope, understand. It does not mean that things are hopeless and that we should just not give a damn and give up and allow it to get worse. Let’s make the best of what we have left. Let’s appreciate what we have lost, fix what we can, respect what we still have and learn to cherish our home. There is no other place like it.

Support the work in the Plastics at SEA: North Atlantic Expedition. Get involved. Join with Dr. Sylvia Earle and Mission Blue and remember Sylvia’s words: “No Blue, No Green”.

Debate continues over whether human actions or natural events are primarily responsible for these global climate changes.

Climate Change graphic

Some people argue that rising levels of human-produced greenhouse gases are warming the planet and causing the climate to change.  Others argue that reported greenhouse gas increases are too small to change the climate, and that 20th century warming has been the result of natural processes such as fluctuations in the sun’s heat and ocean currents.  ProCon.org’s newest and 34th website explores the pros and cons in this debate.

Those who believe humans are causing substantial climate change… state that greenhouse gas levels rise mainly from human activities. They argue these increases are amplified by natural feedback loops, leading to significant global warming and climate change that will detrimentally affect human civilization, causing flooding, water shortages, hotter summers and colder winters, and decreased crop harvests.

Those who believe humans are not substantially contributing to climate change,… argue that the amount of human-generated greenhouse gas increases are too small to substantially change the climate. They state that the earth’s forests and oceans are capable of absorbing these small increases, and that 20th century warming has been the result of natural processes including fluctuations in the sun’s heat and ocean currents.

This debate is discussed at length on Climate Change Pro Con . Org at http://climatechange.procon.org/ complete with stastitics, facts, backgrounders, images and videos as well as reader comments, footnotes and sources. It is a MUST READ for anyone interested in the debate over climate change (which should only concern about 7 billion people).

Climate Change Pro Con . Org: http://climatechange.procon.org/

June 15, 2010

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