none Nutrition; Diet; Reproduction; Life cycle and development; Behaviour; Activity patterns; Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Host parasite relationships; Diseases and disorders; Diseases; Microbial diseases; Transmission; Ecology; Population dynamics; Abiotic factors; Physical factors; Zoogeography; Land and freshwater zones; Palaearctic region; Europe Scolytidae; Food plants; Transmission of fungal disease, ecology & life cycle; Reproductive productivity; Gallery size & prevalence relationships; Life cycle; Activity period; Flight & dispersal, temperature relationship; Hymenopteran parasites; Coeloides scolyticida; Larval mortality relationship; Plant hosts; Ulmus (elms); Transmission of fungal disease & ecology; Host preference; Ulmus (plant), transmission of fungal disease relationship; Penetration of host; Ulmus (plant) preferred entry sites, factors; Prevalence; Ulmus (plant) density of attack; Fungal diseases; Phomopsis oblonga; Mortality & colonization of plant hosts relationship; Transmission of fungi; Ceratocystis ulmi, ecological factors; Emigration; Adult dispersal from plant hosts, temperature factor; Mortality; Fungal disease, avian predator & insect parasite factors; Population density; Prevalence & productivity in individual plant hosts relationship; Predators; Picidae (Aves); Mortality relationship; Animal constructions; Galleries in plant hosts, area requirement; Density & reproductive productivity relationships; Climate and weather; Distribution & life cycle phenology relationships; Temperature; Flight phenology relationship; Distribution patterns; Britain, climatic factors & transmission of Dutch elm disease relations; United Kingdom; North; Ecology in relation to plant hosts & transmission of fungal disease Coeloides scolyticida (Braconidae); Coleopteran hosts; Scolytidae; Host larval mortality; Britain; United Kingdom; North; Coleopteran host mortality Picidae; Prey; Scolytidae (Coleoptera); Prey mortality; Britain; United Kingdom; North; Coleopteran prey mortality