NCJ Number
246183
Journal
Journal of Forensic Sciences Volume: 58 Issue: 5 Dated: September 2013 Pages: 1175-1182
Date Published
September 2013
Length
8 pages
Annotation
It is well known that temperature significantly affects corpse decomposition.
Abstract
It is well known that temperature significantly affects corpse decomposition. Yet relatively few taphonomy studies investigate the effects of seasonality on decomposition. Here, we propose the use of the Kuppen-Geiger climate classification system and describe the decomposition of swine Sus scrofa domesticus carcasses during the summer and winter near Lincoln, Nebraska, USA. Decomposition was scored, and gravesoil chemistry total carbon, total nitrogen, ninhydrin-reactive nitrogen, ammonium, nitrate, and soil pH was assessed. Gross carcass decomposition in summer was three to seven times greater than in winter. Initial significant changes in gravesoil chemistry occurred following approximately 320 accumulated degree days, regardless of season. Furthermore, significant p < 0.05 correlations were observed between ammonium and pH positive correlation and between nitrate and pH negative correlation. We hope that future decomposition studies employ the Kuppen-Geiger climate classification system to understand the seasonality of corpse decomposition, to validate taphonomic methods, and to facilitate cross-climate comparisons of carcass decomposition.