To increase overall knowledge of housing, the experience of individual institutes needs to be shared with other zoos. To coordinate the exchange of knowledge on housing and husbandry between European zoos, the European Association of Zoos and Aquaria (EAZA), was formed in 1992. EAZA set up Taxon Advisory …

Despite the polar bears’ long history of high popularity in zoo settings, many studies indicate that this wide-ranging species expresses many abnormal repetitive behaviours in captivity, such as stereotypic walking, head swinging and repetitive swimming bouts. This is also the case in the male polar …

This research contributes to the Living North Sea project. The aim is to select and apply a socio-economic method in four pilot areas to determine the current and potential value of the areas in relation to the present migrating fish species. This valuation and comparison of the areas are lessons for …

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 …

As part of the “Ecological main structure” the province of Gelderland strives to make the migration for ungulates possible on the Veluwe. Two wildlife crossings have been build, but are not yet operational because the fence around the National Park Hoge Veluwe is still in place. The fence will be lowered …

Invasieve exoten vormen nog wel eens problemen. Een aantal van de uitheemse planten die in Nederland zijn gevestigd zijn moeilijk te bestrijden en kunnen de inheemse vegetatie verdringen. In het kader van een afstudeeropdracht voor de studie bos en natuurbeheer is een pilot onderzoek opgezet naar de …

A study on the effects of burring and logging on the regeneration and the survival commercial tree species in a tropical dry forest in Santa Cruz, Bolivia.

A high resolution infrared spectrum of species formed in a nitrogen-hydrogen plasma expansion was recorded. A cavity ring down detection scheme was used to record a rotationally resolved spectrum in the region from 3300 cm-1 to 3380 cm-1. Using the relative intensities and line positions it was determined …