Highlights (2012, 2011)
identification of species-specific traits that
make a species a better surrogate of taxonomic biodiversity.
of those surrogate species which are typically targeted by local conservation
managers (according to their rarity and increase public awareness) proves to
be a poor predictor of three different measures of species richness of the
native terrestrial avifauna of Fuerteventura island (Canary Islands).
* The best
surrogates for global bird species richness are those smaller birds of
medium-high abundances, broad habitat preferences, less threatened status,
and with a high degree of endemicity. No spatial-scale dependency was
observed in the surrogacy power of species. Read more.
of geographic variation in day length on the abundance of wintering birds.
paper demonstrates for the first time that spatial variation in winter bird
abundance increases with day length after controlling for the effect of other
environmental variables, such as food availability, minimum night
temperature, habitat structure and landscape characteristics. Read
conservation priority lists for bird species in
an island scenario.
propose a simple model of threat based on natural descriptors of rarity and
taxonomic distinctiveness (area of occupancy, population abundance and trend,
and endemicity), and assess its correlation with ecological features of the
species (habitat preferences and body size).
Spanish Red data Book and the Canary Islands administrative lists are poorly
related to descriptors ordering the extinction risk and loss of taxonomic
singularity, so some changes would make their categories more coherent after
considering the ecological bases of rarity of this insular avifauna. Read more.