objective: today, addressing the issue of sustainability especially in agriculture has received more attention. sustainability in the systems of canola cultivation depends on many factors like ecological, social and economic dimensions and understanding these factors can result in formulation of policies and strategies for sustainable agricultural development. methods: 8961 canola farmers of qa...

Emerging diseases represent a growing worldwide problem accompanying global environmental changes. There is tremendous interest in identifying the factors controlling the appearance and spread of these diseases. Here, we discuss emerging fungal plant diseases, and argue that they often result from host shift speciation (a particular case of ecological speciation). We consider the factors contro...

The ‘new public health’ has stimulated calls to adopt an ecological approach for action aimed at improving population health. However, the implementation of ecological programs has often remained a challenge. The objective of this study was to identify factors facilitating the implementation of ecological tobacco control programming in two Public Health Departments in Québec (Canada) using Sche...

www.sciencemag.org (this information is current as of February 2, 2009 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/323/5910/133 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/1162986/DC1 can be found at:...

Article history: Received 31 December 2004 Received in revised form 3 December 2005 Accepted 14 December 2005 Ecological data are difficult to analyze due to complexity residing in the ecological systems with the variables varying in non-linear fashion. Efficient methods are required to properly extract information out of the complex data. Wavelets have good time–frequency (timescale) localizat...

Previous studies have examined tooth eruption as it relates intrinsically to body mass, brain mass, and other life history variables, and extrinsically to ecological factors (e.g., age at foraging independence, environmental risk aversion, and maternal investment). Different models have been explored wherein each of these variables impacts ontogeny. However, anthropoid and strepsirhine primates...

This article presents a socioecological approach (accounting for physical, societal, and interpersonal environments) to psychological theorizing and research. First, we demonstrate that economic systems, political systems, religious systems, climates, and geography exert a distal yet important influence on human mind and behavior. Second, we summarize the historical precedents of socioecologica...

Despite intensive development of instrumental methods environmental factors analysis for plant communities their assessment with ecological scales still remains important. The main advantage is ability to reflect generalized and average characteristics regimes due significant inertia in response composition the change certain environment. ways calculation while using are medium-sized method ide...