| demographic characteristics of an avian predator, louisiana waterthrush (parkesia motacilla), in response to its aquatic prey in a central appalachian usa watershed impacted by shale gas development. | we related louisiana waterthrush (parkesia motacilla) demographic response and nest survival to benthic macroinvertebrate aquatic prey and to shale gas development parameters using models that accounted for both spatial and non-spatial sources of variability in a central appalachian usa watershed. in 2013, aquatic prey density and pollution intolerant genera (i.e., pollution tolerance value <4) decreased statistically with increased waterthrush territory length but not in 2014 when territory den ... | 2018 | 30485266 |
| stream acidification and reduced aquatic prey availability are associated with dietary shifts in an obligate riparian neotropical migratory songbird. | streams and their surrounding riparian habitats are linked by reciprocal exchanges of insect prey essential to both aquatic and terrestrial consumers. aquatic insects comprise a large proportion of total prey in riparian habitats and are opportunistically exploited by terrestrial insectivores; however, several species of songbirds are known to preferentially target aquatic prey via specialized foraging strategies. for these songbirds, reduced availability of aquatic insects via stream acidificat ... | 2018 | 30002974 |
| estimating indices of range shifts in birds using dynamic models when detection is imperfect. | there is intense interest in basic and applied ecology about the effect of global change on current and future species distributions. projections based on widely used static modeling methods implicitly assume that species are in equilibrium with the environment and that detection during surveys is perfect. we used multiseason correlated detection occupancy models, which avoid these assumptions, to relate climate data to distributional shifts of louisiana waterthrush in the north american breedin ... | 2016 | 26990459 |