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Fast-warming, ailing Med Sea might be a sign of what to come

MADRID — While vacationers might benefit from the Mediterranean Sea’s summer warmth, climate scientists are warning of dire consequences because of its marine life since it burns in a number of severe heat waves.

From Barcelona to Tel Aviv, scientists say they’re witnessing exceptional temperature hikes which range from 3 degrees Celsius (5.4 Fahrenheit) to 5 degrees Celsius (9 Fahrenheit) above typical for this season. Water temperatures have regularly exceeded 30 C (86 F) on some days.

Extreme heat in Europe along with other countries round the Mediterranean has grabbed headlines come early july, however the rising sea temperature is basically out of sight and out of mind.

Marine heat waves are due to ocean currents accumulating areas of hot water. Weather systems and heat in the atmosphere may also put on degrees to the water’s temperature. And exactly like their on-land counterparts, marine heat waves are longer, more frequent and much more intense due to human-induced climate change.

The problem is quite worrying, says Joaquim Garrabou, a researcher at the Institute of Marine Sciences in Barcelona. We have been pushing the machine too far. We need to do something on the climate issues as quickly as possible.

Garrabou is section of a team that recently published the report on heat waves in the MEDITERRANEAN AND BEYOND between 2015 and 2019. The report says these phenomena have resulted in massive mortality of marine species.

About 50 species, including corals, sponges and seaweed, were affected along a large number of kilometers of Mediterranean coasts, based on the study, that was published in the Global Change Biology journal.

The problem in the eastern Mediterranean basin is specially dire.

The waters off Israel, Cyprus, Lebanon and Syria will be the hottest spot in the Mediterranean, for certain, said Gil Rilov, a marine biologist at Israels Oceanographic and Limnological Research institute, and something of the papers co-authors. Average sea temperatures in the summertime are actually consistently over 31 C (88 F).

These warming seas are driving many native species to the brink, because every summer their optimum temperature has been exceeded, he said.

What he and his colleagues are witnessing when it comes to biodiversity loss is what’s projected to occur further west in the Mediterranean toward Greece, Italy and Spain in the coming years.

Garrabou highlights that seas have already been serving the earth by absorbing 90% of the earths excess heat and 30% of skin tightening and emitted in to the atmosphere by coal, coal and oil production. This carbon-sink effect shields the earth from even harsher climate effects.

This is possible because oceans and seas were in a wholesome condition, Garrabou said.

However now we’ve driven the ocean to an unhealthy and dysfunctional state,” he said.

As the earth’s greenhouse gas emissions should be drastically reduced if sea warming is usually to be curtailed, ocean scientists are specifically searching for authorities to ensure that 30% of sea areas are protected from human activities such as for example fishing, which may give species an opportunity to recover and thrive.

About 8% of the MEDITERRANEAN AND BEYOND area happens to be protected.

Garrabou and Rilov said that policymakers are largely unacquainted with the warming Mediterranean and its own impact.

Its our job as scientists to create this with their attention to allow them to consider it, Rilov said.

Heat waves occur when especially warm weather continues over a collection amount of days, without rain or little wind. Land heat waves help cause marine heat waves and both have a tendency to feed one another in a vicious, warming circle.

Land heat waves have grown to be commonplace in lots of countries round the Mediterranean, with dramatic unwanted effects like wildfires, droughts, crop losses and excruciatingly high temperatures.

But marine heat waves may possibly also have serious consequences for the countries bordering the Mediterranean and the a lot more than 500 million individuals who live there whether it’s not handled soon, scientists say. Fish stocks will undoubtedly be depleted and tourism will undoubtedly be adversely affected, as destructive storms could are more common on land.

Despite representing significantly less than 1% of the global ocean surface, the Mediterranean is among the main reservoirs of marine biodiversity, containing between 4% and 18% of the worlds known marine species.

Many of the most affected species are fundamental to maintaining the functioning and diversity of the sea’s habitats. Species just like the Posidonia oceanica seagrass meadows, that may absorb vast levels of skin tightening and and shelters marine life, or coral reefs, which may also be home to wildlife, will be at an increased risk.

Garrabou says the mortality impacts on species were observed between your surface and 45 meters (around 150 feet) deep, where in fact the recorded marine heat waves were exceptional. Heat waves affected a lot more than 90% of the Mediterranean Seas surface.

Based on the latest scientific papers, the ocean surface temperature in the Mediterranean has increased by 0.4 C (0.72 F) each decade between 1982 and 2018. On a yearly basis, it’s been rising by some 0.05 C (0.09 F) in the last decade without the sign of letting up.

Even fractions of degrees might have disastrous effects on ocean health, experts say.

The affected areas also have grown because the 1980s and today covers the majority of the Mediterranean, the analysis suggests.

The question isn’t concerning the survival of nature, because biodiversity will see solution to a survive on earth, Garrabou said. The question is if we continue in this direction maybe our society, humans, won’t have a place to call home.

Ilan Ben Zion reported from Jerusalem.

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Associated Press climate and environmental coverage receives support from several private foundations. See more about APs climate initiative here. The AP is solely in charge of all content.

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