Aim Concern about the impacts of biological invasions has generated a great deal interest in understanding factors that determine invasion success. Most our current knowledge comes from static approaches use spatial patterns as proxy temporal processes. These assume species are present areas where environmental conditions most favourable. However, this assumption is problematic when applied to ...

In a subarctic forest at Kvaløya, northern Norway, willow grouse Lagopus lagopus fed snow level by clipping bits of twigs from mountain birch Betula pubescens during winter. Birch has two types ending in terminal bud: long with smooth bark, and short rings thicker bark. The selected ringed above despite surplus the forest. Ringed had more bark cm −1 twig length higher relative bark/wood ratio t...

In the 14 July 1997, issue of Lancet, Schlemper et al. [1] reported a study in which four Japanese and four Western pathologists (from the United States, Canada, Germany, and Finland) compared their diagnoses of gastric biopsy and resection specimens having epithelial lesions ranging from reactive, through preneoplastic, to invasive carcinoma. These pathologists independently classified microsc...

We studied patients with myeloid neoplasm associated with ringed sideroblasts and/or thrombocytosis. The combination of ringed sideroblasts 15% or greater and platelet count of 450 x 10(9)/L or greater was found in 19 subjects fulfilling the diagnostic criteria for refractory anemia with ringed sideroblasts (RARS) associated with marked thrombocytosis (RARS-T), and in 3 patients with primary my...