At the most fundamental levels, the distribution and success of organisms depend upon physiological factors. Temperature, nutrients, salinity, etc. impact metabolic processes within individuals, and therefore influence growth, reproduction, and survivorship. Likewise information on only a few physiological factors can accurately predict species’ distributions. I use a mix of field and laboratory techniques to addresses how variation in physiological factors influence ecological processes that are more subtle than (yet equally important as) presence/absence, including growth, reproduction, and interactions.
Schubert, N† & K Demes†. 2017. Phenotypic plasticity in the marine angiosperm Halophila decipiens Ostenf. (Hydrocharitaceae, Streptophyta). Marine Ecology Progress Series 575: 81-93. [link]
Demes, KW & MH Graham. 2011. Abiotic regulation of vegetative vs. sexual reproduction in the clonal kelp Laminaria sinclairii (Laminariales, Phaeophyceae). Journal of Phycology (47)3: 463-470. [link]
Demes, KW, MM Littler & DS Littler. 2010. Comparative phosphate acquisition in giant-celled rhizophytic algae (Bryopsidales, Chlorophyta): fleshy vs. calcified forms. Aquatic Botany 92(2): 157-160. [link]
Demes, KW, SS Bell & CJ Dawes. 2009. The effects of elevated phosphate concentrations on calcification in the green alga Halimeda incrassata. Journal of Experimental Marine Biology and Ecology. 374(2): 123-127. [link]