Quantcast

The World's Oceans Are in Peril

Climate

The world’s oceans—covering nearly two-thirds of the Earth’s surface, and on which much of human life depends—are under severe pressure, a new report says.

Overfishing has dramatically reduced fish stocks. The thousands of tonnes of rubbish dumped in the oceans wreak havoc on marine life, while climate change is warming and acidifying them, putting them under further stress.

Over-exploitation of fish stocks compounds ocean damage from climate change. Photo credit: John Wallace / NOAA via Wikimedia Commons

These are the sobering conclusions of a wide-ranging study of the Earth’s ecosystems by the Worldwatch Institute, a U.S.-based organization widely rated as one of the world’s foremost environmental think-tanks.

“Our sense of the ocean’s power and omnipotence—combined with scientific ignorance—contributed to an assumption that nothing we did could ever possibly impact it”, says Katie Auth, a researcher at Worldwatch and one of the authors of the report.

“Over the years, scientists and environmental leaders have worked tirelessly to demonstrate and communicate the fallacy of such arrogance.”

Decadal Doubling

More than 50 percent of commercial fish stocks are now fully exploited with another 20 percent classified as over-exploited, the report says, while the number of dead zones—areas of the ocean depleted of oxygen and incapable of supporting marine life—has doubled in each decade since the 1960s.

The oceans play a key role in absorbing vast amounts of greenhouse gases and slowing the warming of the atmosphere.

The report says: “… Evidence suggests that as the ocean becomes saturated with CO2, its rate of uptake will slow, a process that has already begun.”

Sea surface temperatures are rising, putting marine systems under pressure and causing fish and sea bird populations to migrate to colder areas.

Worldwatch says there must be big cutbacks in fossil fuel emissions: “If emissions continue at current levels, ocean acidity in surface waters could increase by almost 150 percent by 2100, creating a marine environment unlike anything that has existed in the past 20 million years.”

The Worldwatch report, State of the World 2015, examines a range of sustainability issues. It says the goal of continued economic growth—an economic doctrine which has prevailed only since the 1950s—is a threat to the sustainability of multiple ecosystems.

The world’s resources—whether its fossil fuels or water resources—cannot go on being plundered. Changes in climate—in particular the prevalence of drought in some of the world’s main food-producing regions—is threatening the planet’s ability to feed itself.

The report concludes: “There is no question that scholars and scientists who study the human economy, the earth and the interactions between them are drawing profoundly troubling conclusions…

It is time for homo sapiens sapiens to live up to its somewhat presumptuous Latin name, and grow up.”

YOU MIGHT ALSO LIKE

Take the #LessIsMore Climate Pledge

NOAA: July Was Hottest Month Ever Worldwide

The Drought in California Is So Bad the Ground Is Literally Sinking

EcoWatch Daily Newsletter

Natural Resources Defense Council

By Emily Deanne

Shower shoes? Check. Extra-long sheets? Yep. Energy efficiency checklist? No worries — we've got you covered there. If you're one of the nation's 12.1 million full-time undergraduate college students, you no doubt have a lot to keep in mind as you head off to school. If you're reading this, climate change is probably one of them, and with one-third of students choosing to live on campus, dorm life can have a big impact on the health of our planet. In fact, the annual energy use of one typical dormitory room can generate as much greenhouse gas pollution as the tailpipe emissions of a car driven more than 156,000 miles.

Read More Show Less
Kokia drynarioides, commonly known as Hawaiian tree cotton, is a critically endangered species of flowering plant that is endemic to the Big Island of Hawaii. David Eickhoff / Wikipedia

By Lorraine Chow

Kokia drynarioides is a small but significant flowering tree endemic to Hawaii's dry forests. Native Hawaiians used its large, scarlet flowers to make lei. Its sap was used as dye for ropes and nets. Its bark was used medicinally to treat thrush.

Read More Show Less
Sponsored
Frederick Bass / Getty Images

States that invest heavily in renewable energy will generate billions of dollars in health benefits in the next decade instead of spending billions to take care of people getting sick from air pollution caused by burning fossil fuels, according to a new study from MIT and reported on by The Verge.

Read More Show Less
Aerial view of lava flows from the eruption of volcano Kilauea on Hawaii, May 2018. Frizi / iStock / Getty Images

Hawaii's Kilauea volcano could be gearing up for an eruption after a pond of water was discovered inside its summit crater for the first time in recorded history, according to the AP.

Read More Show Less
A couple works in their organic garden. kupicoo / E+ / Getty Images

By Kristin Ohlson

From where I stand inside the South Dakota cornfield I was visiting with entomologist and former USDA scientist Jonathan Lundgren, all the human-inflicted traumas to Earth seem far away. It isn't just that the corn is as high as an elephant's eye — are people singing that song again? — but that the field burgeons and buzzes and chirps with all sorts of other life, too.

Read More Show Less
Sponsored
A competitor in action during the Drambuie World Ice Golf Championships in Uummannaq, Greenland on April 9, 2001. Michael Steele / Allsport / Getty Images

Greenland is open for business, but it's not for sale, Greenland's foreign minister Ane Lone Bagger told Reuters after hearing that President Donald Trump asked his advisers about the feasibility of buying the world's largest island.

Read More Show Less
AFP / Getty Images / S. Platt

Humanity faced its hottest month in at least 140 years in July, the US National Oceanic and Atmospheric Administration (NOAA) said on Thursday. The finding confirms similar analysis provided by its EU counterparts.

Read More Show Less
Newly established oil palm plantation in Central Kalimantan, Indonesia. Rhett A. Butler / Mongabay

By Hans Nicholas Jong

Indonesia's president has made permanent a temporary moratorium on forest-clearing permits for plantations and logging.

It's a policy the government says has proven effective in curtailing deforestation, but whose apparent gains have been criticized by environmental activists as mere "propaganda."

Read More Show Less