The Effects of Soil Texture on the Ability of Human Remains Detection Dogs to Detect Buried Human Remains

Despite technological advances, human remains detection (HRD) dogs still remain one of the best tools for locating clandestine graves. However, soil texture may affect the escape of decomposition gases and therefore the effectiveness of HDR dogs. Six nationally credentialed HRD dogs (three HRD only and three cross‐trained) were evaluated on novel buried human remains in contrasting soils, a clayey and a sandy soil. Search time and accuracy were compared for the clayey soil and sandy soil to assess odor location difficulty. Sandy soil (p < 0.001) yielded significantly faster trained response times, but no significant differences were found in performance accuracy between soil textures or training method. Results indicate soil texture may be significant factor in odor detection difficulty. Prior knowledge of soil texture and moisture may be useful for search management and planning. Appropriate adjustments to search segment sizes, sweep widths and search time allotment depending on soil texture may optimize successful detection.     

Organized crime or crime that is organized? The parrot trade in the neotropics

The illegal wildlife trade is one of the most profitable illegal industries in the world, only behind the trafficking of drugs, guns, and humans. Because of the relative ease in poaching wildlife combined with the possibility of high profit margins, many assume that organized crime is heavily linked to the trade. One group of species that is poached, trafficked and sold in illicit markets throughout the world are parrots. While some have claimed organized crime groups are involved in the trade, parrot experts contend there is no evidence of organized crime being involved. The purpose of this paper is to examine the structural organization of the illegal parrot trade in the neotropics to determine if the trade is driven by organized crime or if it is a simply a crime that is organized. The following study is based on 38 interviews with parrot poachers, middlemen, wildlife market sellers, and others knowledgeable on the trade in multiple cities within Bolivia and Peru to better understand the organization of the trade. The results garnered from these interviews do not support the notion that organized crime is involved in the illegal parrot trade in either country. The vast majority of participants are freelance operators where there appears to be no formal organization between or amongst those operating in the parrot trade. Implications of findings are discussed.