Ramifying effects of the risk of predation on African multi-predator, multi-prey large-mammal assemblages and the conservation implications

2019 ◽  
Vol 232 ◽  
pp. 51-58 ◽  
Author(s):  
Norman Owen-Smith
2008 ◽  
Vol 73 (2) ◽  
pp. 337-360 ◽  
Author(s):  
Jessica C. Thompson ◽  
Nawa Sugiyama ◽  
Gary S. Morgan

Sandia Cave in New Mexico was excavated in the late 1930s by Frank Hibben, who described a unique type of chipped stone artifact-the “Sandia point”-in association with a faunal assemblage that included extinct Pleistocene species. The site was interpreted as a late Pleistocene Paleoindian hunting station, making it the earliest human occupation known in America at the time. Despite the pivotal role the faunal assemblage has played in interpretations of the site, there was never a confirmed behavioral association between the artifacts and the fossils. A subsequent series of controversies about the age of the site and the integrity of the stratigraphy has since pushed Sandia Cave into obscurity. Results from a recent taphonomic study of the large and small mammal assemblages from the original excavations are reported here. These show that the majority of the fauna were accumulated by nonhuman agents (carnivores, raptors, and rodents), but that a small proportion of large mammal fragments retain human modification. The three major points of controversy are discussed in light of these and other findings, and it is shown that Sandia Cave remains an important datapoint in archaeological, paleontological, and paleoecological studies of the region.


2018 ◽  
Vol 40 (1) ◽  
pp. 134 ◽  
Author(s):  
D. S. Kostopoulos ◽  
G. D. Koufos

The Greek fossil record of small and large mammal Local Faunal Assemblages is studied and compared by means of cluster analysis techniques using Jaccard similarity index and unweighted pair-group method. The analysis allow recognizing a good arrangement of the Greek LFAs according to time and a main cluster gap, corresponding to an important faunal renewal that, however, is not synchronous in the large and small mammal community. Minor groupings of large mammal faunas seem also to fit with main climatic trends, whereas the small mammal assemblage appears to undergo longer periods oftaxonomic stability


2005 ◽  
Vol 92 (11) ◽  
pp. 537-541 ◽  
Author(s):  
Emmanuel Fara ◽  
Andossa Likius ◽  
Hassane T. Mackaye ◽  
Patrick Vignaud ◽  
Michel Brunet

Author(s):  
Xavier Lambin

The dependency of mustelid demographic rates on prey abundance has the potential to cause a strong coupling between predator-prey populations. Data on mustelid dynamics show that such strong reciprocal interactions only materialise in some restricted conditions. Bite-size mustelid predators searching for scarce, depleted prey expose themselves to increased risk of predation by larger predators of small mammal that are themselves searching for similar prey species. As voles or muskrats become scarcer, weasels and mink searching for prey over larger areas become increasingly exposed to intra-guild predation, unless they operate in a habitat refuge such as the sub-nivean space. Where larger predators are sufficiently abundant or exert year-round predation pressure on small mustelids, their impact on mustelids may impose biological barrier to dispersal that are sufficient to weaken the coupling between small mustelids and their rodent prey, and thus impose a degree of top down limitation on mustelids.


Paleobiology ◽  
1988 ◽  
Vol 14 (1) ◽  
pp. 81-90 ◽  
Author(s):  
Rob Hoffman

Seven taxa of raptorial birds were experimentally fed a controlled sample of 50 house mice (Mus musculus). Bones recovered from the pellets were examined for interspecies variability in preservation to assess the potential contribution of specific raptors to patterning in fossil assemblages. Quantitative analyses demonstrate that patterns in bone fragmentation may assist in the identification of particular raptor species as depositional agents in small mammal assemblages.


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