I'm Richard O'Rorke, a food-web ecologist with a focus on tackling problems in conservation. This involves looking at diverse feeding interactions: from microbes (bacteria, phage, fungi, unicellular and colonial Eukaryotes) to multicellular plants and animals. Understanding the structure of food webs helps us understand how some species succeed others, why other species become invasive and helps us rescue and rehabilitate threatened ecosystems and landscapes.