
In the last decade, climate change has caused behavioural changes in most of the species, accentuating this change in migratory species, as these are most vulnerable, when using multiple habitats and a wealth of resources.As stated in the publication of CMS (Convention of Migratory Species) on migratory species and climate change, this is changing migration routes.
A response to various adversities caused by climate change is well known, as is the temporary inconsistency of prey and predators, the disjunction phenomenon known as ecological climate change elevates factors such as erosion and high temperatures etc.

This pattern of behaviour, inherited from generation to generation, has been modified by such sudden temperature changes and high erosion afflicting the African continent. What has caused a reduction in total miles of the bird migration routes or in some cases birds becoming resident, as is the case of the White Stork which are frequently seen all year round near their nesting sites in Andalucía?
As we report in the journal “Ardeola”, (the Journal of the Spanish Ornithological Society) the small number of migratory birds that cross the Strait of Gibraltar are declining even though their populations in Europe are stable, examples of which are such species as Gulls, Common Swift (Apus apus), and Tawny Pipit (Anthus campestris).

Among all types of wetlands notable for this role on these routes are steppe wetlands. When these areas of water are located in an ecosystem as dry as the steppes and where water is a limiting challenger, they inevitably become havens of life.
The steppes are ecosystems that have been created by the hand of man, after centuries of agriculture, making it the ideal habitat for species such as the Great Bustard (Otis tarda) or the Little Bustard (Tetrax Tetrax). If in this ideal habitat for such species we add a lagoon we obtain a source of biodiversity with great potential such as the ecological wetland steppe.

After the heavy rains of 2010 and 2011 these temporary wetlands have been flooded all year maintaining an acceptable depth for many species. Similarly, vegetation changes such as at the La Hoya de Turquilla lagoon where the reeds and sedges are the main type of vegetation for species such as the Night Heron (Nycticorax Nycticorax) has resulted in this species tripling their number of breeding pairs in a period of five years.
So, if we compare the results of the surveys conducted in the area of lagoons around Lantejuela~Osuna~Ecija with the passage through the Strait, we can conclude that steppe wetlands form a key part of this great puzzle of climate change.
M º Angeles Andrades Martin