Letícia Soares Lost in Space October 4 th , 2011 Reserve design and the SLOSS debate
Feb 22, 2016
Letícia SoaresLost in Space
October 4th, 2011
Reserve design and the SLOSS debate
Debate origins
Theory sustaining the controversy
What to focus in order to solve the problem
Papers for discussion
Outline
Metapopulation models to access species richness in habitat patches.
Should refuges always consist of the largest possible single area?
Single Large or Several Small?When everything started
Experimentally isolated Red Mangrove forestSpecies richness of canopy arthropods.
Single Large or Several Small?When everything started
Archipelago A supports the idea that a cluster of smaller patches might support more species than a single larger patch.
Single Large or Several Small?When everything started
Single large always assumed to be the best strategy.
Empirical evidence was showing the value of several small.
Which way to go when planning conservation reserves?
Understanding the real debate
1) Species area relationship
Why single large is intuitively good
S = cAz ; c=constant; z=slope
log(S) = log(c) + zlog(A)
Larger areas = higher habitat diversity = more species
Species area relationship – is that always true?
Why single large is intuitively good
Area response depends on the trophic groupDisruption of specific interactions
Small patches accumulate species faster than larger patches.
Habitat diversity
Small patches are important for overall species richness