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- Briggs, C.J., et al. Show all 2 Author
- Environmental entomology 2007 v.36 no.4 pp. 776-791
- plant tissues; food webs; Pyrus communis; arthropod communities; community structure; biological control agents; predatory arthropods; herbivores; carbon nitrogen ratio; Cacopsylla pyricola; stable isotopes; omnivores
- ... Documenting trophic links in a food web has traditionally required complex exclusion experiments coupled with extraordinarily labor-intensive direct observations of predator foraging. Newer techniques such as stable isotope analysis (SIA) may facilitate relatively quick and accurate assessments of consumer feeding behavior. Ratios of N and C isotopes are thought to be useful for determining specie ...
- Briggs, C.J., et al. Show all 3 Authors
- Environmental entomology 2007 v.36 no.2 pp. 441-450
- temperature; stem elongation; galls; Rhopalomyia californica; host plants; light intensity; environmental factors; wind speed; seasonal variation; insect development; insect reproduction; cages; Baccharis pilularis; California
- ... This study assessed the influence of microenvironment on the establishment and relative reproductive success of the gall-forming midge Rhopalomyia californica Felt on its host plant Baccharis pilularis De Candolle in Marin County, CA. Mesh cages were used to alter the microenvironment, which also allowed us to assess the validity of using these types of experimental manipulations in this system. T ...