Publications by authors named "R B Dunn"
Article Synopsis
- Habitat partitioning allows brown and white shrimp to coexist by using estuarine habitats at different times, although they do overlap, particularly towards the end of their nursery residency.
- Laboratory experiments tested how the density and presence of each shrimp species impacted their growth and mortality rates.
- The study found that species identity influenced growth and survival, with smaller shrimp having higher mortality, indicating environmental changes could affect their populations in varying ways.
Understanding the habitat use of individuals can facilitate methods to measure the degree to which populations will be affected by potential stressors. Such insights can be hard to garner for marine species that are inaccessible during phases of their annual cycles. Here, we quantify the link between foraging habitat and behaviour in an aquatic bird of high conservation concern, the red-throated diver () across three breeding populations (Finland, Iceland and Scotland) during their understudied moult period.
View Article and Find Full Text PDFObjective: To evaluate in vitro fertilization (IVF) cycles covered by health insurance using a national commercial claims database and to validate key clinical events against national IVF registries.
Design: Retrospective cohort study SUBJECTS: US women aged 20-44 who underwent IVF from 2005 to 2020 in Optum's de-identified Clinformatics® Data Mart Database (CDM).
Exposure: Undergoing IVF MAIN OUTCOME MEASURES: IVF cycles and rates of pregnancies (inclusive of losses and terminations), live births, and live birth types (e.
Juniperus spp. are keystone shrubs in western North America and important climatic indicators in paleo-records. However, a lack of taxonomic resolution among fossil species limits our ability to track past environmental changes.
View Article and Find Full Text PDFObjectives: Automated immunoassays for 1,25-dihydroxyvitamin D (1,25(OH)D) have increased the use of serum measurements in clinical and research settings, but disagreement with LC-MS/MS methods remains an issue.
Methods: In this study, we examined this problem using samples obtained from healthy young adults, n=80, mean age 21.7 (18-32) years, and a large cohort of paediatric samples, n=422, mean age 7.