2015 is the hottest year since data exist, June and July having the highest temperatures of history. So, these extreme temperatures have a notorious effect in organism and the amphibians are one of the most affected. The vast majority of amphibians depend on aquatic environments, sometimes seasonal, to reproduce. This is why the larval phase is considered as regulatory of their demographic dynamic.
We have noticed this year that many wetlands, that normally get dry at the end of summer, have gotten dry faster than in other years. Many of the streams have in June the same flow that they would have in August in a "normal" year. These changes are going to mean that many populations are not going to have recruitment of new animals this year, a particularly severe blow for the endangered species.
A hopeful fact is that the amphibians’ populations are adapted to big fluctuation from year to year, due to the ordinary changes in the environments where they reproduce. Nevertheless, if the environmental conditions that we are noticing this year replicate themselves frequently; we will probably assist to important changes in our amphibians communities.
The data are alarming: 14 of the 15 hottest years, since the register began at the end of the nineteenth century, have been since the year 2000. So, it is convenient to recall that these extreme temperatures not only affected us the humans, but there are also many vulnerable being that a summer like this can be difficult.