There are two interrelated issues that seem to be emerging as central to the understanding of ecological systems more generally. particularly relevant to agroecosystems. First is the key insights of Alan Turing in which spatial pattern emerges from a system in which there is a reaction between two objects. both of which are diffusing in space. https://www.spidertattooz.com/Drosselklappe-o-450-mm-fur-elektrischen-Stellantrieb/