Noxious Weed Management: A Review of Herbicide Use at Colorado State Parks

Weed control in recreation areas is a complex public land management issue. Colorado State Parks are managed for both recreation and conservation, which often conflict. Noxious weeds affect both recreation and conservation efforts, and Parks often use herbicides to control these weeds. While herbicides are effective, they can be harmful to the environment and human health. Herbicide use at State Parks was reviewed to determine if chemical control is effective, safe, and efficient. The results revealed that many Parks are not using effective herbicides to treat noxious weeds and that some weed management plans lack pertinent information on chemical control. The results and recommendations provided can be used to improve the success of noxious weed control and create healthier Parks.

Where Is My Food? Brazilian Flower Fly Steals Prey from Carnivorous Sundews in a Newly Discovered Plant-Animal Interaction

A new interaction between insects and carnivorous plants is reported from Brazil. Larvae of the predatory flower fly Toxomerus basalis (Diptera: Syrphidae: Syrphinae) have been found scavenging on the sticky leaves of several carnivorous sundew species (Drosera, Droseraceae) in Minas Gerais and São Paulo states, SE Brazil. This syrphid apparently spends its whole larval stage feeding on prey trapped by Drosera leaves. The nature of this plant-animal relationship is discussed, as well as the Drosera species involved, and locations where T. basalis was observed. 180 years after the discovery of this flower fly species, its biology now has been revealed. This is (1) the first record of kleptoparasitism in the Syrphidae, (2) a new larval feeding mode for this family, and (3) the first report of a dipteran that shows a kleptoparasitic relationship with a carnivorous plant with adhesive flypaper traps. The first descriptions of the third instar larva and puparium of T. basalis based on Scanning Electron Microscope analysis are provided.

[Admittatur of Samuel Weed (Harvard AB 1800)], 1796 August 17

Published copy of the 1790 College Laws, bound in modern board binding, with the admittatur of undergraduate Samuel Weed signed by President Joseph Willard on August 17, 1796.

Pike, pickerel and muskalonge / by Alfred C. Weed, Assistant Curator of Fishes.

no.9(1927)

Helena National Forest (N.F.), noxious weed treatment project : environmental impact statement.

Mode of access: Internet.

The life of the fly : with which are interspersed some chapters of autobiography /

"The present volume contains all the essays on flies, or Diptera, from the Souvenirs entomologiques, to which I have added, in order to make the dimensions uniform with those of the other volumes of the series, the purely autobiographical essays comprised in the Souvenirs."--Translator's note.

The book of the fly; a nature study of the house-fly and its kin, the fly plague and a cure.

Mode of access: Internet.

Weed management guide for commercial vegetable growers, 1984 /

Cover title.

Improving Klamath weed ranges /

Mode of access: Internet.

University of Illinois weed control research report.

Issued 1987- in parts; part II has title: Illinois weed science research report.