Humanity lives in anticipation of disaster. Global warming give the world so much misery that death from a meteorite or explosion collider seems the best relief from the slow and inevitable disaster. But the problem is that people are more inclined to trust the screaming headlines and disregard serious studies.
Scientists from the U.S. Geological Survey (USGS) calculated how climate change will affect the period from 2010 to 2099 to life in the San Francisco Bay and the mouths of rivers Sacramento and San Joaquin. The conclusions drawn in the end the long and hard work, are valid for all similar water bodies, particularly in the Pacific, which is bordered and eastern Russia.
U.S. Geological Survey Director Marcia McNutt said that the effects of warming will hit in the first place, the marine life of this natural area. Increased salinity levels in two and even three times can greatly change the ecosystem, causing a migration of fish, and after them, and animals. Reduction in the duration of the cold period necessitates a great flood that will destroy agricultural system in the region.
In the San Francisco Bay and the Sacramento River fall Sac-Joaquin, forming a special natural area — estuary. It differs from the delta that the mouth of rivers flowing into the ocean, not divided into several channels. Here for spawning chinook salmon swims or Pacific salmon — the largest representative of the species. Raising the temperature and salinity of water will make the area completely unsuitable for him, and he will have to search for suitable breeding conditions farther north. In Sacramento usual and unique Pacific smelt, which is under threat of extinction.
"The animals, especially predators, such as the brown bear, immediately react to extinction or migration of fish in the other region. But climate change will strike not only in the animal world. Higher temperatures lead to early melting snow, increasing the risk of spring flooding in half. Generally, we assume that the snow stops falling out and change to rain, which can cause serious flooding "- a forecast was made by the author of James Kloern.
Water area, formed by the confluence of the Sacramento and San Joaquin, provides drinking water to 25 million people. This water is used for the reclamation of farmland, the harvest of which brings in $ 36 billion a year. Results of the study offer important information that will form the basis of preventive measures for the conservation of this area — such as conservation program Gulf Bay Delta Conservation Plan.
"Building plans for the future, we must take into account all the factors that are actually related, because climate change may not only affect the ecosystem or only on agriculture. Integrated approach to ensure our readiness to deal with disasters," — concluded Kloern.
It should be noted that changes in the ecosystem of the Pacific generally reported earlier Sven FAO Article from the University of Southampton. He argued that even a minimal increase in the average temperature of the ocean can lead to migration of underwater predators to the South Pole. In this case, the West Antarctic Peninsula will move huge community of king crabs. Aggressive marine reptiles will cause chaos in the ecosystem, as voracious crabs can alter the natural balance of the region in which they are moving. It may be destroyed many species of fish, animals and birds — as herbivores and predators.
Recall that the Intergovernmental Panel on Climate Change had already spoken with the forecast of catastrophic rains, which will fall to the ground near the end of the century, and researchers from Stanford University, made it clear that climate change will affect the middle latitudes — Europe, China and North America. In tropical Africa, Asia and South America, the summer temperatures start to go off-scale in 20 years.
We must not forget that warming will cause to migrate not only animals, but people, as stated in another report of the Intergovernmental Panel on Climate Change.