pine sawfly

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• pine sawfly — noun : any of several sawflies (family Diprionidae) having larvae that feed on pine needles …   Useful english dictionary

• jack-pine sawfly — noun : an American sawfly (Neodiprion pratti banksianae or N. banksianae) having a larva that is a serious defoliator of pine (as jack pine) …   Useful english dictionary

• red-headed pine sawfly — noun : a sawfly (Neodiprion lecontei) that feeds in the larval stage on various pines in the eastern United States …   Useful english dictionary

• Pine — This article is about the tree. For other uses of the term pine , see Pine (disambiguation). Pine Japanese Red Pine (Pinus densiflora), North Korea Sc …   Wikipedia

• List of introduced species — A complete List of introduced species for even quite small areas of the world would be dauntingly long. Humans have introduced more different species to new environments than any single document can hope to record. The following list of… …   Wikipedia

• Numerical response — The Numerical response in ecology is the change in predator density as a function of change in prey density. The term numerical response was coined by M. E. Solomon in 1949.[1] It is associated with the functional response, which is the change in …   Wikipedia

• Formica — Taxobox image width = 260px image caption = Formica rufa collecting regnum = Animalia phylum = Arthropoda classis = Insecta ordo = Hymenoptera familia = Formicidae subfamilia = Formicinae tribus = Formicini genus = Formica genus authority =… …   Wikipedia

• C. S. Holling — Dr. C. S. Holling Born December 6, 1930 Theresa, New York Nationality …   Wikipedia

• Functional response — In ecology, functional response is a term used to describe the relationship between the density of prey in a certain area and the average number of prey consumed by each predator in that area. The concept was introduced by work on small mammals… …   Wikipedia

• Ecosystem model — Ecosystem models, or ecological models, are mathematical representations of ecosystems. Typically they simplify complex foodwebs down to their major components or trophic levels, and quantify these as either numbers of organisms, biomass or the… …   Wikipedia

• Diprion pini — Gemeine Kiefernbuschhornblattwespe Systematik Unterordnung: Pflanzenwespen (Symphyta) Überfamilie: Blattwespenartige (Tenthredinoidea) Familie: Buschhornblattwespen (Diprionidae) Unt …   Deutsch Wikipedia