Prof. David Inouye has been collecting data on the abundance and timing of flowers that fall within permanent plots at the Rocky Mountain Biological Laboratory (RMBL), in Gothic, Colorado, USA, from 1973 to present. During the growing season, flowers of each species are counted approximately every o

Prof. Rebecca (Becky) Irwin has been collecting data on the abundance and timing of bees in permanent sites near the Rocky Mountain Biological Lab (RMBL), Gothic, Colorado, USA, from 2009 to present. During the flight season, we use pan traps and netting every two weeks to estimate bee abundance by

Allocation of stored and incoming nutrients to reproduction determines an organism’s age-specific fecundity curve. In holometabolous insects, differences among species in the shape of the curve are correlated with differences in the potential importance of adult food to reproduction. I examined allo

Abstract Certified B-sized potato seed was planted at the Red River Valley Potato Growers Research farm on 20 May. Soils were of a finely textured (clay) type. Plot size was 4 rows 36 inch wide and 25 ft. in length. Treatments were arranged in a RCB design, replicated 4 times. Insecticide applicatio

Abstract A field was planted on 11 May using certified B-sized Norchip potatoes. Soils are of a fine texture (clay), and were dry at planting time. Plots were 4 rows 36 inch wide, 25 ft. in length with a 6 ft. alley at the ends. Treatments were arranged in a RCB design, replicated 4 times. Soil trea

By setting out arrays of potted plants of Penstemon strictus, I tested whether freely foraging bumblebee (Bombus spp.) workers would establish regular foraging routes that reflected the geometry of the array. They did, passing through an asymmetrical array in a pattern that minimized interplant flig

Abstract. 1. Foraging effort can vary among age classes and between the sexes. In many Lepidoptera, young males feed from mud, dung or carrion in a behaviour known as ‘puddling’, whereas females rarely puddle. In at least one species, males transfer sodium gained from puddling to females at mating f

Svata M. Louda, James E. Rodman, Insect Herbivory as a Major Factor in the Shade Distribution of a Native Crucifer (Cardamine Cordifolia A. Gray, Bittercress), Journal of Ecology, Vol. 84, No. 2 (Apr., 1996), pp. 229-237

Abstract Potatoes were planted 17 May at the Research Farm of the Red River Valley Potato Growers Association. Plots were four rows wide, 60 ft long, with 38 in rows and 12 in between plants. Plots were separated on all sides by 6.3 ft of cultivated soil. The experiment had a complete randomized plo