| the abiotic and biotic factors limiting establishment of predatory fishes at their expanding northern range boundaries in ontario, canada. | there is a poor understanding of the importance of biotic interactions in determining species distributions with climate change. theory from invasion biology suggests that the success of species introductions outside of their historical ranges may be either positively (biotic acceptance) or negatively (biotic resistance) related to native biodiversity. using data on fish community composition from two survey periods separated by approximately 28 years during which climate was warming, we examine ... | 2015 | 25556555 |
| effects of incremental increases in silt load on the cardiovascular performance of riverine and lacustrine rock bass, ambloplites rupestris. | rock bass (ambloplites rupestris) are a widespread centrarchid species with both riverine and lacustrine populations. after precipitation events, rivers often carry elevated silt loads, where as lakes generally remain free from suspended silt and sediment. to examine the physiological effects of silt on rock bass, we conducted a series of experiments using fish from lake opinicon and the grand river in ontario. ultrasonic doppler flow probes were surgically affixed around the ventral aorta to mo ... | 2004 | 14720485 |