Demographic vulnerability in cliff-dwelling Sonchus species endemic to the western Mediterranean
نویسندگان
چکیده
منابع مشابه
Habitat specificity of a threatened and endemic, cliff-dwelling halophyte
Coastal areas and other saline environments are major contributors to regional and global biodiversity patterns. In these environments, rapidly changing gradients require highly specialized plants like halophytes. In European coastal cliff-tops, rocky and sandy seashores, and saltmarshes, typical halophytes from the genus Limonium are commonly found. Among them, the aneuploid tetraploid (2n = 4...
متن کاملCentaurea corymbosa, a cliff-dwelling species tottering on the brink of extinction: a demographic and genetic study.
Centaurea corymbosa (Asteraceae) is endemic to a small area (< or = 3 km2), and < 500 individuals reproduce in any given year. Nevertheless, enzyme polymorphism was found within and among the six local extant populations, the most distant at 2.3 km. Levels of gene flow among populations and seed and pollen dispersal data indicated very low dispersal capacity. Rarity of long distance dispersal e...
متن کاملPopulation genetics of self-incompatibility in a clade of relict cliff-dwelling plant species
The mating systems of species in small or fragmented populations impact upon their persistence. Small self-incompatible (SI) populations risk losing S allele diversity, responsible for the SI response, by drift thereby limiting mate availability and leading to population decline or SI system breakdown. But populations of relict and/or endemic species have resisted these demographic conditions o...
متن کاملCooperation and competition in a cliff-dwelling people.
In animals that breed cooperatively, adult individuals will sometimes delay reproduction to act as helpers at the nest who raise young that are not their genetic offspring. It has been proposed that humans are also a cooperatively breeding species because older daughters, grandmothers, and other kin and nonkin may provide significant childcare. Through a prospective cohort study of children's (...
متن کاملIsolation of 91 polymorphic microsatellite loci in the western Mediterranean endemic Carex helodes (Cyperaceae)1
PREMISE OF THE STUDY Microsatellite primers were developed for Carex helodes (Cyperaceae), a western Mediterranean endemic that is locally distributed in southern Portugal and southwestern Spain and rare in northern Morocco. METHODS AND RESULTS One hundred nine nuclear microsatellite markers were developed using a shotgun pyrosequencing method, resulting in 91 polymorphic and 18 monomorphic l...
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ژورنال
عنوان ژورنال: Basic and Applied Ecology
سال: 2015
ISSN: 1439-1791
DOI: 10.1016/j.baae.2015.02.009