The European Ground Squirrel (Spermophilus citellus) is an endemic, non-social, hibernating rodent, distributed through several Pan-European countries. Its habitat is semi-arid grass steppes and analogical man-made landscapes with short vegetation layers, such as meadows and golf courses. Since 1996, …

This research aims to provide an overview of the current status of the three walrus sub-species found in the Arctic: the Atlantic walrus (Odobenus rosmarus rosmarus), the Pacific walrus (Odobenus rosmarus divergens) and the Laptev walrus (Odobenus rosmarus laptevi). In this report the focus will be on …

To protect the otter population in the Netherlands, it is important to understand the otter's ecology. Otters have a very high metabolic rate, and they need to eat often. Here for we need to know of what species their diet consists, as this might influence their behaviour and distribution. When we know …

The aim of this research was to describe paddock use of horses and cattle in different densities in the salt marshes of Noord-Friesland Buitendijks. In this report is also added the ongoing discussion about grazing in salt marshes in whole Europe and it might help understanding different outcomes in …

In this study, diets of 155 beached and by-caught harbour porpoises were reconstructed from the contents of their stomachs. The objective was to investigate whether different energy requirements of adult males and females during their lives translate into lasting differences in diets.