The blood phenomenon causes the mass death of marine creatures and birds

I thought about the Mahdi

On January 15, the "Plus One" journal published the results of a study warning of the effects of climate change on wild and marine life in the oceans.

The research reviewed the deaths of many marine creatures in a mass death phenomenon attributable to the wave of global warming, which was concentrated in the form of a patch of waters in the northeastern Pacific, in the period between 2013 and 2016, a phenomenon known as the "Blob".

One million seabirds died
Researchers in many American bodies specialized in marine life research reported a devastating biological catastrophe witnessing the shores of the oceans around the world, which monitored the increasing numbers of dead birds on the shores of the Pacific Ocean, in a mass death phenomenon that did not include the bird alone, but rather dealt with many marine creatures The other.

The researchers reported that the number of dead birds found on the beaches of Alaska and California between 2015 and 2016 reached 62,000 Moors. It is known that a small number of dead birds are washed ashore, which means that the actual number exceeds that recorded.

Researchers estimate that the number of deaths is close to a million birds to this day, and that two-thirds of the deaths are adults, which constitutes a serious threat to the continued reproduction of this species of bird.

The researchers attributed this to a spot of surface water that was concentrated in the Northeast Pacific from Alaska to California, and was characterized by a temperature of two to three degrees above the average temperature of the rest of the ocean water, but the deep cold water below it prevented its access to The beach, and this spot still exists.

Ecosystem
Researchers have not yet been able to find other evidence to explain that mass death except hunger, and based on samples collected from surface waters in the Pacific Ocean, the researchers concluded that this long heat wave reduced the biomass of phytoplankton, and restructured the zooplankton communities in favor of The poor species in terms of nutrients.

Thus, it can be said that warmer temperatures in the water increased the metabolism of cold-blooded fish there.

Thus, predatory fish - such as the Alhaz and plum fish in Alaska and cod in the Pacific Ocean - eat more than usual, which means increased food demand for small forage fish, such as herring, sardines and small salmon, which are food for the rest of the marine species.

This competition is likely to exacerbate the food supply problem there, leading to mass deaths from hunger.

Oceanography and global warming
To illustrate temperature disturbances related to the heat wave in the Northeast Pacific Ocean, the researchers used sea surface temperature measurement data (SST), and they calculated a time series of mean temperature anomalies there.

The measurements included several regions of the Pacific Ocean, after which they calculated the seasonal cycle based on the average values ​​recorded between 1870 and 2018, and they estimated the annual rates of sea surface temperature change, then the average of five consecutive years to obtain an annual index of the annual temperature change rate.

The researchers believe that the number of those spots of thermal surface water has become more common over the past century, and it is expected that their occurrence will increase with the increase in the temperature of the planet.

Currently, similar patches of hot ocean water form around the world, which threatens serious disasters in marine life, which means that the next death rate will be much greater.