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01 / 05
Corals Recover Faster on Artificial Structures than on Natural Reefs

Mongabay | Conservation & Biodiversity

Corals Recover Faster on Artificial Structures than on Natural Reefs

“To better understand how to help corals become more resilient, researchers in Japan studied how quickly corals return to artificial structures compared to natural reefs after bleaching.

Previous studies have explored the same question, typically over one to 10 years. The Japanese study used 29 years of field data.

Using government data, the researchers compared coral cover on vertical breakwaters — grooved structures built to protect the shore from waves — with coral recovery on natural reefs in Naha Port, Japan, from 1989 to 2018.

A bleaching event in 1998 affected both types of substrates, but ‘corals on artificial structures recovered faster from [the] mass bleaching event than the natural coral reef ecosystems,’ Toko Tanaya, lead author of the study and senior researcher with the Port and Airport Research Institute in Japan, told Mongabay in a phone call.

Within six years, the breakwaters recovered to near pre-bleaching levels, while ‘the coral cover on natural reefs barely recovered from bleaching,’ the authors write.”

From Mongabay.

Yale Environment 360 | Natural Disasters

AI Is Quietly Powering a Revolution in Weather Prediction

“In February, the European Centre for Medium-Range Weather Forecasts (ECMWF) — a world leader in forecasting global weather conditions up to a few weeks out — quietly went live with the planet’s first fully operational weather forecast system powered by artificial intelligence. 

The new A.I. forecasts are, by leaps and bounds, easier, faster, and cheaper to produce than the non-A.I. variety, using 1,000 times less computational energy. And, in most cases, these A.I. forecasts, powered by machine learning, are more accurate, too. ‘Right now the machine learning model is producing better scores,’ says Peter Dueben, a model developer at ECMWF in Bonn, who helped to develop the center’s Artificial Intelligence Forecasting System (AIFS). The improvement is hard to quantify, but the ECMWF says that for some weather phenomena, the AIFS is 20 percent better than its state-of-the-art physics-based models.

Andrew Charlton-Perez, a meteorologist at the University of Reading who also heads up that institution’s school of computational sciences, expects plenty more operational A.I. forecasts to follow — from both national weather agencies and companies like Google.”

From Yale Environment 360.

The Ocean Cleanup | Pollution

A 30-City Program to Cut Pollution from Rivers by One Third by 2030

“The Ocean Cleanup, the international non-profit with the mission to rid the world’s oceans of plastic, today announced, at the UN Ocean Conference (UNOC), its plan to rapidly expand its work to intercept and remove ocean-bound plastic pollution.

The 30 Cities Program will scale the organization’s proven Interceptor™ solutions across 30 key cities in Asia and the Americas, aiming to eliminate up to one third of all plastic flowing from the world’s rivers into the ocean before the end of the decade.

This evolution follows five years of learning through pioneering deployments across 20 of the world’s most polluting rivers and represents a key next step in the organization’s mission and the global fight against ocean plastic pollution.”

From The Ocean Cleanup.

American Chemical Society | Pollution

The Past Decade’s Huge Reduction in Anthropogenic Mercury Emissions

“Mercury (Hg) is a highly toxic metal of global concern, with its anthropogenic emissions strictly controlled by the Minamata Convention on Mercury. The effectiveness of this convention is evaluated by global atmospheric Hg monitoring among other indicators. However, it is uncertain to directly link anthropogenic Hg emissions to atmospheric Hg concentrations mainly due to legacy Hg re-emissions. Here, we reconstructed the past atmospheric Hg concentrations and isotope compositions using the annually resolved (1982–2020) leaves of Androsace tapete at Mt. Everest, Tibetan Plateau. Our reconstruction indicates that the atmospheric Hg concentrations increased from the early 1980s to 2002 (3.31 ng m–3), followed by a large (∼70%) decline until 2020 (0.90 ng m–3). The declining trend of atmospheric Hg concentrations resembles those observed at North Hemisphere background sites, particularly in Chinese rural areas.”

From American Chemical Society.

Corpus Christi Caller-Times | Conservation & Biodiversity

Kemp’s Ridley Sea Turtles Have Record-Breaking Season

“Kemp’s ridley sea turtles might still be laying eggs in Texas, but it’s already a record-breaking season for the endangered species.

As of June 13, 383 Kemp’s ridley sea turtle nests have been found on the Texas coast. That surpasses the previous record of 353 found in 2017, though the season could last into July.”

From Corpus Christi Caller-Times.