Integrating nature into the city is still a pending matter: the presence of trees in our urban environment still has much room for improvement.
In the 1980s, three sub-disciplines of ecology emerged – restoration ecology, conservation biology, and invasion biology – and all three embraced the nativism paradigm.
Species richness is not homogeneous in space and it normally presents differences when comparing among different sites. These differences often respond to gradients in one or several factors which create biodiversity patterns in space and are scale-dependent.
The forests and their trees are one of the most important cultural symbols of humanity. Consequently, most civilisations have appropriated them with care, consideration and respect.
In September of 2011 the 6th Science Centre World Congress was held in Cape Town, South Africa. Some of the participants, among which I was, had the privilege to make a four day visit to Welgevonden Park (meaning found well in Afrikaans).
In Spain, the only programmes devoted to information on the environment are broadcast on public television channels. Private channels do not spend a minute on environmental slots.
Nature’s complexity goes beyond human imagination. The discovery and exploitation of biodiversity has undoubtedly helped us to reach a certain level of understanding of the natural world. Even though all essential ecological processes of the biosphere are determined and regulated by microorganism activity, for most