Spatiotemporal variation in population dynamics of a narrow endemic, Ranunculus austro-oreganus.

Premise: Understanding how population dynamics vary in space and time is critical for understanding the basic life history and conservation needs of a species, especially for narrow endemic species whose populations are often in similar environments and therefore at increased risk of extinction under climate change. Here, we investigated the spatial and temporal variation in population dynamics of Ranunculus austro-oreganus, a perennial buttercup endemic to fragmented prairie habitat in one county in southern Oregon.

Methods: We performed demographic surveys of three populations of R.

seroprevalence in dogs, cats, and horses in Tennessee, USA.

We estimated the seroprevalence in dogs, cats, and horses from Tennessee, USA, using the microscopic agglutination test (MAT) against 12 serovars. We observed seropositivity in 110 of 374 (29.4%) dogs, 21 of 170 (12.

Nursing Theory Today: What, Why, How.

Theory is a key component in nursing scholarship. A fundamental aim of nursing scholarship is to generate understanding of processes and human experiences of health. The combined practices of nursing science and the profession can be uniquely beneficial to theory development.

Pop-out effects revisited: Within-array category pop-out and novel pop-out effects with picture stimuli.

Pop-out effects occur when a novel or different stimulus is presented in the context of an array of otherwise familiar or similar stimuli. The effect has been studied using words extensively, but little evidence exists for humans relating to nonverbal stimuli. Although the finding has implications for understanding features of stimuli that capture attention, contradictory findings exist, and previous paradigms have limited applicability to real world situations.