Publications by authors named "R A Heim"
Article Synopsis
- Migratory animals depend on various sites during their annual cycles, and changes at these locations can significantly impact their populations, especially long-distance migrants like the Yellow-breasted Bunting.
- Reduced adult survival due to persecution at non-breeding sites is a major factor contributing to the decline of this species, with ongoing extinction particularly noted in western regions of its range.
- Research revealed moderate survival in eastern populations, no returning birds from the west, and identified key migration corridors and stopover sites in eastern China, highlighting the need for targeted conservation efforts and increased monitoring of survival and breeding in both populations.
Artificial nest sites can support populations of endangered species when they are correctly installed. Here we analysed the characteristics and conditions that determined whether the northern house martin occupied more than 300 artificial nests around the city of Münster, Germany. We found that artificial nest occupation rates were influenced by various environmental and temporal factors.
View Article and Find Full Text PDFPlant biomass is a fundamental ecosystem attribute that is sensitive to rapid climatic changes occurring in the Arctic. Nevertheless, measuring plant biomass in the Arctic is logistically challenging and resource intensive. Lack of accessible field data hinders efforts to understand the amount, composition, distribution, and changes in plant biomass in these northern ecosystems.
View Article and Find Full Text PDFObjectives: Postoperative monitoring outside intensive and post-anaesthesia care units is seldom, partly due to lack of suitable and approved systems. We therefore aim to validate the oxygen saturation (SpO) and pulse rate measurement of the in-ear sensor c-med° alpha with a reference pulse oximeter.
Methods: This prospective agreement study was conducted in 12 healthy (ASA 1) adult (18-50 years) volunteers according to the EN ISO 80601-2-61.
An illustrated catalogue of the Palaearctic types of species and subspecies described by Walter Linsenmaier in Omalus Panzer, 1801 is given. Linsenmaier described 16 species and subspecies of Omalus; most of the primary types are deposited in the collection at the Natur-Museum in Luzern, Switzerland, with the exception of four holotypes which are deposited at the Natural History Museum in London, UK; Nationalparkzentrum in Zernez, Switzerland; Eidgenössische Technische Hochschule in Zurich, Switzerland; and Museo de Naturaleza y Arqueologia in St. Cruz de Tenerife, Spain.
View Article and Find Full Text PDF