Landscape change has great, yet infrequently measured, potential to influence the susceptibility of natural systems to invasive species impacts. We quantified attack by an invasive biological control weevil (Rhinocyllus conicus) on native thistles in relation to two types of landscape change: agricultural intensification and invasion by an exotic thistle, Carduus nutans, the original target of ...

Theory predicts that damage by a shared herbivore to a secondary host plant species may either be higher or lower in the vicinity of a preferred host plant species. To evaluate the importance of ecological factors, such as host plant proximity and density, in determining the direction and strength of such herbivore-mediated indirect effects, we quantified oviposition by the exotic weevil Rhinoc...

CONTENTS Preliminary Program of the Boston Meeting of the American Association for the Advancement of Science ................... 737 Our Food from the Waters: PROFESSOR W. A. HERDMAN .................................... 740 Reform in Sydney University: PROFESSOR PERCIVAL R. COLE .......................... 749 T. Nishikawa, 1874-1909: PROFESSOR BASHFORD DEAN .......................................

BACKGROUND Global warming and shifted precipitation regimes increasingly affect species abundances and distributions worldwide. Despite a large literature on species' physiological, phenological, growth, and reproductive responses to such climate change, dispersal is rarely examined. Our study aims to test whether the dispersal ability of a non-native, wind-dispersed plant species is affected b...

This study aimed to reveal the interactions of aphids with their primary hosts (pome and stone fruit trees) secondary (herbaceous plants) in around orchards Çanakkale Province northwestern Turkey between April-September from 2020 2021. Thirty-eight aphid species belonging 18 genera two subfamilies, Aphidinae Calaphidinae, Aphididae order Hemiptera were identified on 53 host plants. Also, 92 aph...