Browsing by Author "Reid, D"
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- ItemVariability of stable isotope ratios of glassfish (Ambassis jacksoniensis) from mangrove/saltmarsh environments in Southeast Australia and implications for choosing sample size(Taylor & Francis, 2008-04) Mazumder, D; Williams, RJ; Reid, D; Saintilan, N; Szymczak, RStable isotopes offer an accurate and cost-effective way to understand critical pathways of energy, and their use has application where aquatic habitats have been degraded. Isotope ratios can offer insights into appropriate conservation and rehabilitation techniques to manage these valuable resources. To date, the literature shows little attention to spatial and temporal variation in isotope signatures of samples taken from estuarine environments. This study reports on an investigation of sample size by which to determine isotopic signatures within a single species of fish, Ambassis jacksoniensis. Provided are two ways by which to determine how many samples are needed, and the results imply that care may be needed in interpreting previous studies based on small sample size. A minimum of five individuals would appear necessary in some cases. © 2008, Taylor & Francis Ltd.
- ItemVariability of stable isotope ratios of mangrove glassfish (Ambassis Jacksoniensis) from southeast Australia and the implications for ecosystem studies(Ingenta, 2007-05-03) Mazumder, D; Williams, RJ; Szymczak, R; Reid, D; Saintilan, NScientists concerned with organic matter flow and food web structures in aquatic ecosystems are increasingly realizing the potential of stable isotope ratios as natural tracers. Stable isotopes offer an accurate and cost effective way to understanding critical pathways of energy and pollutant transfer. Further, many aquatic habitats have been degraded and isotope ratios offer insights into appropriate conservation and rehabilitation techniques to manage these valuable resources. So far, the literature shows little attention has been paid to spatial and temporal variations in isotope signatures of samples taken from saltmarsh and mangrove environments. This study reports on investigations into the differences in isotopic signatures within a single species, Ambassis jacksoniensis, surveyed from two locations at two different times. The results suggest significant variation in δ13C between different season and location for glassfish, but not for δ15N. The results also suggest that care is needed in interpreting previously published results. © 2007 Rosenstiel School of Marine and Atmospheric Science