Host-parasite interactions generally involve communities of parasites. Within these communities, species will co-exist and/or interact with one another in a manner either benefiting the species involved or to the detriment of one or more of the species. At the level of helminth infracommunities, evidence for intra- and inter-specific competition includes numerical responses, i.e. those regulati...

one of the most visible aspects of a forest stand structure is the spatial patterns of trees. competition affects on forest structure and its understanding is important, when the purpose of forest management is to imitate the dynamic of natural ecosystems. for this purpose, an unmanaged intact forest was selected with 26 hectares area. all chestnut leaf oak (quercus castaneifolia) trees with a ...

vernonia galamensis cass is a huge potential industrial crop with very high content of vernolic acid in the seed oil. the experiment was carried out to determine the effect of inter- and intra- row spacing on the yield and yield related traits of vernonia galamensis cas.the experiment was conducted for two years during 2014-2015 on experimental field of wondo genet agricultural research center,...

Intraand inter-specific competition between seedlings of Acacia etbaica Schweinf. and the grass Hyparrenia hirta (L.) Stapf. was studied to evaluate the influence of the perennial grass on the establishment of the tree seedlings. The experiment was conducted using a replacement series in which plants were grown in a greenhouse at an overall density of six individuals per pot, providing combinat...

This paper presents an updated empirical assessment of the relative effectiveness of intra-platform and inter-platform competition in terms of broadband diffusion in Europe between 2003 and 2010. It relies on an econometric analysis of 18 European countries. To approximate two forms of competition within a same platform, we distinguish between service-based access and facility-based access. The...

in order to examine of the weed damage on corn and determination of the most suitable index for corn (zea mays l.) yield reduction in field condition and multi-species weed competition, an experiment as an interval mapping was carried out in the researching field of mashhad university during 2008-2009. treatments were complete control (pre-planting treflan and hand weeding), no control (no herb...