1. Dept of Biology; Univ. of California; Riverside CA USA
2. Dept of Zoology; Univ. of Oxford; Oxford UK
3. Biology Dept; California State Univ. Dominguez Hills; Carson CA USA
4. Odum School of Ecology; Univ. of Georgia; Athens GA USA
5. Center for Applied Isotope Studies-Stable Isotope Ecology Laboratory; Univ. of Georgia; Athens GA USA
6. Dept of Biological Sciences; Florida State Univ.; Tallahassee FL USA