miércoles, 27 de enero de 2016

New Publication on the role of anthropogenic areas for conservation

Martinez-Abrain, A. and Jimenez, J. 2016. Anthropogenic areas as incidental substitutes for original habitat. Conservation Biology. doi: 10.1111/cobi.12644.


One speaks of ecological substitutes when an introduced species performs, to some extent, the

ecosystem function of an extirpated native species. We suggest that a similar case exists for habitats. Species evolve within ecosystems, but habitats can be destroyed or modified by natural and human-made causes. Sometimes habitat alteration forces animals to move to or remain in a suboptimal habitat type. In that case, the habitat is considered a refuge, and the species is called a refugee.
Photo: Martínez-Abrain, A.
Typically refugee species have lower population growth rates than in their original habitats. Human action may lead to the unintended generation of artificial or semiartificial habitat types that functionally resemble the essential features of the original habitat and thus allow a population growth rate of the same magnitude or higher than in the original habitat. We call such areas substitution habitats and define them as human-made habitats within the focal species range that by chance are partial substitutes for the species’ original habitat. We call species occupying a substitution habitat adopted species. These are 2 new terms in conservation biology. Examples of substitution habitats are dams for European otters, wheat and rice fields for many steppeland and aquatic birds, and urban areas for storks, falcons, and swifts. Although substitution habitats can bring about increased resilience
against the agents of global change, the conservation of original habitat types remains a conservation priority

viernes, 15 de enero de 2016

The workshop on Applied Hierarchical models in Ecology ended

Theoretical aspects of site-occupancy ...
G.E.P. hosted the workshop on Modelling the distribution of species and communities accounting for detection using R and BUGS/JAGS by G. Guillera-Arroita, J.J. Lahoz-Monfort and M. Kéry.
.. and practical aspects of site-occupancy
Gurutzeta, José and Marc introduced the most useful models to estimate site-occupancy and they illustrated how to implement them using a frequentist ('unmarked') as well as a bayesian analytical framework ('JAGS', 'WinBugs'). 


It has been a wonderful occasion to learn about bayesian statistic, new developments and cutting-edge site-occupancy models. We had many inspiring talks on bayesian concepts, applcations and, above all, many priceless advices on how to analyse different types of data. Obviously, it has also been a good excuse to meet friends.

ps: find the supporting book by M. Kéry and A. Royle and some working examples here.