Problems of survival of sea turtles

Due to global warming on Earth, intensive melting of polar ice occurs, which is the reason for increasing the level of the oceans. How long this process will continue is unknown. Some sources claim that in the next 50 years, the world ocean will become three meters deeper. So, at present, a number of coastal territories are already flooded during storms and tides.

Most studies of this issue were carried out in order to study the effect of the consequences on humans and its habitat. However, the problems associated with the impact of the increase in the level of the oceans on the coastal flora and fauna turned out to be little studied. In particular, sea turtles are carried out most of their life in water, but they periodically need to go on land in order to lay eggs. The incubation period of turtle eggs is from six to eight weeks. What will happen when water reaches the masonry of eggs on the sandy beach?

There were cases when sea water flooded the turtle of the nest or the offspring just born. Scientists do not have information about the consequences of prolonged exposure to salt water on eggs. Scientists at the University of James Cook (in Townsville, Australia), led by Professor David Pike, were collected for research in the area of ​​the islands of the Great Barrier Reef Eggs of the Green Sea Turtle. The laboratory created conditions emitting the effects of sea salt water, and the test groups of eggs were subjected to various exposure. Research results were published on July 21, 2015.

After the eggs in salty water from one to three hours, their viability decreased by 10%. The sixhour finding of the control group in artificially created conditions reduced indicators to 30%.

Repeated behavior of the experiment with the same eggs significantly enhanced the negative effect.

In the hatching turtle of the offspring, developmental deviations were not noted, however, according to researchers, in order to draw final conclusions, work on study should be continued.

Observation of the behavior and vital activity of young turtles will answer questions about how the effect of hypoxia (oxygen starvation) affects animals and how this will affect the life expectancy of their life.

The team of scientists under the leadership of David Pike tried to get an idea of ​​the problem associated with the low birth rate of green sea turtles on the Rhine Island in the water area of ​​the Great Barrier Reef.

These indicators range from 12 to 36%, while for this type of turtles it is the norm of offspring from 80% of the layered eggs. Based on studies conducted since 2011, scientists concluded that the main influence on the decrease in the population had rains and floods, as a result of which the territory of the island was flooded.

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