Sustainable harvesting of wild populations relies on evidence-based knowledge to predict outcomes for species and the ecosystems they inhabit. Although may elicit compensatory density-dependence, it is generally size-selective, which induces additional pressures that are challenging forecast. Furthermore, responses harvest be population-specific whether generalizable patterns exist remains uncl...

drought stress is one of the most important factors limiting the survival and growth of plants in the different habitats of iran. detailed knowledge about the ecophysiological responses of native plants to drought stress could contribute to the success of breeding and re-vegetation programs. six wild populations of anthemis tinctoria, were assigned to four drought treatments, i.e. well-watered ...

REPORTRAPPORT Wild bootstrapping in finite populations with auxiliary Abstract Consider a nite population u, which can be viewed as a realization of a su-perpopulation model. A simple ratio model (linear regression, without intercept) with heteroscedastic errors is supposed to have generated u. A random sample is drawn without replacement from u. In this setup a two stage wild bootstrap resampl...

trees are an important source of wild germplasm for sustainable forestry. wild pear germplasm (pyrus boisseriana) was collected from a forest ecosystem and resistance potential to drought stress was surveyed in a greenhouse. in six-month seedlings, signs of leaf rolling appeared after 18 days without water (drought simulation). gas exchange parameters, such as net photosynthesis, stomatal condu...

in this study, we examined the chromosome number, detailed male meiosis, microsporogenesis, pollen fertility and distribution of cytotypes of diplotaxis harra (forssk.) boiss. this is the first cytogenetic report of the taxon. the two of the populations scored now from regions of the central showed aneuploid (x = 14) meiotic chromosome count and one of the populations studied from the existed a...