BACKGROUND Trigonopterus weevils are widely distributed throughout Melanesia and hyperdiverse in New Guinea. They are a dominant feature in natural forests, with narrow altitudinal zonation. Their use in community ecology has been precluded by the "taxonomic impediment". METHODOLOGY/PRINCIPAL FINDINGS We sampled >6,500 specimens from seven areas across New Guinea; 1,002 specimens assigned to ...

Weed communities can be influenced by nutrient availability, form (e. g., ammonium vs. nitrate), amendment timing, type (e.g., organic inorganic), and immigration of seeds during applications. The objective this research was to compare the long-term effect different fertility treatments in a corn ( Zea mays L.)-alfalfa Medicago sativa L.) rotation on taxonomic functional structure composition w...

abstract isolates of rhizoctonia spp., obtained from sugar beet roots and crowns with dry rot symptoms that had been collected from various sugar beet production regions in khorasan razavi province during 2008 and 2009, were investigated in this research. characterization by conventional techniques and molecular methods using species-specific primers was carried out. results showed that from 36...