World Wide Food Webs: Power to Feed Ecologists

Small world patterns in food webs.

The analysis of some species-rich, well-defined food webs shows that they display the so-called small world behavior shared by a number of disparate complex systems. The three systems analysed (Ythan estuary web, Silwood web and the Little Rock lake web) have different levels of taxonomic resolution, but all of them involve high clustering and short path lengths (near two degrees of separation)...

Der Wandel in der Benutzung des World Wide Webs

Dieser Beitrag präsentiert ausgewählte Ergebnisse einer Langzeitstudie mit 25 Teilnehmern zur Benutzung des Webs. Eine Gegenüberstellung mit den Ergebnissen der letzten vergleichbaren Studien offenbart eine deutliche Veränderung im Navigationsverhalten der Nutzer. Neue Angebote und Dienste des Webs sowie die Möglichkeiten aktueller Web-Browser, führen offenbar zu neuen Navigationsstrategien. Gl...

WebS rooge: A Hoarding Agent for the World Wide Web

Food webs

Ecosystems, whether they are forests, lakes or coral reefs, consist of a diverse range of species that interact with each other in many ways. As ecologists we want to understand how these complex systems function as a whole and how they respond to human impacts such as harvesting and environmental change. A mechanistic understanding of the underlying biological processes will allow us to predic...

Ecology: Engineered food webs

An important new study shows that, in a food web, the strengths and arrangement of the interactions between species are determining factors of stability of the system.