| experimental removals reveal dietary niche partitioning facilitates coexistence between native and introduced species. | niche overlap between native species and ecologically similar invaders can lead to competitive exclusion of threatened native species, but if two such species also co-occur naturally elsewhere, interactions between native and introduced populations may mirror coevolved niche partitioning that reduces competition and promotes coexistence.a single, insular population of fremont's squirrel (tamiasciurus fremonti) the mount graham red squirrel (mgrs; t. f. grahamensis) in the pinaleño mountains, ari ... | 2019 | 31015988 |
| does caching strategy vary with microclimate in endangered mt. graham red squirrels? | food hoarding is a common behavior used by a variety of animals to cope with periods of low food availability. at the retreating edge of species' distribution, the stressful environment and unfavourable climate conditions may impose severe costs on hoarding behavior. since relict populations are hotspots for evolution and adaptation, and considering that food hoarding behavior has a strong evolutionary basis, we decided to evaluate the occurrence of behavioral variability in the amount of food c ... | 2019 | 31714949 |