The Leibniz Institute for Zoo and Wildlife Research (IZW) is an interdisciplinary research institute dedicated to developing the scientific basis for novel approaches to wildlife conservation.
In the current era of the Anthropocene, virtually all ecosystems in the world are subjected to man-made impacts. As yet, it is not possible to predict the response of wildlife to the ever-increasing global change. Why are some wildlife species threatened by anthropogenic change, while others persist or even thrive in modified, degenerated or novel habitats?
To answer this and related questions, the IZW conducts basic and applied research across different scientific disciplines. We study the diversity of life histories and evolutionary adaptations and their limits, including diseases, of free-ranging and captive wildlife species, and their interactions with people and their environment in Germany, Europe and worldwide.
For decades habitat loss and degradation were considered the important drivers for defaunation in tropical rainforest ecosystems. A new study carried out by the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) in cooperation with the World Wide Fund for Nature Vietnam (WWF-Vietnam) and the Sabah Forestry Department of the Government of Malaysia suggests that for ground dwelling mammal and bird communities, illegal hunting using indiscriminate snares may be a more immediate threat than forest degradation through selective logging. The researchers conducted a large scale camera-trapping study to compare several forest areas with logging concessions in Malaysian Borneo and protected areas in the Annamites ecoregion of Vietnam and Laos known to be subjected to illegal hunting. The results, published in the journal “Communications Biology”, show severe defaunation in snared forests compared to logged forests.
The “Berlin Science Week" will take place from November 1 to November 10, 2019 at research institutions in Berlin. The festival brings together top researchers from all over the world with the local science community and the public in Germany’s capital. The Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) is participating in the festival with a lecture programme. The lectures on infectious diseases in animals, service dogs for wildlife research and the use of citizen sciences in biodiversity research will take place on November 5, 2019 in the lecture hall of the Leibniz-IZW. Admission is free.
The white-tailed sea eagle is known for reacting sensitively to disturbances. However, research into which factors have which effects on the animals and how these impacts influence breeding success has so far only just begun. A research team led by Dr Oliver Krone from the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) has now measured concentrations of the hormone corticosterone and its metabolic products in white-tailed sea eagles in northern Germany and correlated these values with potential causes of “stress”. They found that the levels of corticosterone in the birds' urine are higher the closer a breeding pair's nest is to paths or roads. From this, the scientists derive implications for the management and protection of white-tailed sea eagles, in particular for protection zones around the nests. The study was published in the journal "General and Comparative Endocrinology".
While hair analysis has become routine in humans – for example for the detection of prolonged drug or medication abuse – it has been little used in animals to date. Scientists led by Alexandre Azevedo and Katarina Jewgenow of the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) have now demonstrated that the "stress" hormone cortisol is deposited in hair of wild mongooses in Portugal and determined baselines for cortisol in these carnivores. Age, sex and storage time of the samples were reflected in the cortisol values, but not the season or reproductive status of the females. It is now possible to investigate whether different habitats and changed living conditions, such as the return of the Iberian lynx, place a particular burden on the mongooses. The results were recently published in the scientific journal "PLoS ONE".
For decades the story of the northern white rhinoceros has been a tale of decline. The number of individuals shrank down to only two in 2018, rendering complete extinction as only a matter of time. An international consortium of scientists and conservationists has now achieved a milestone in assisted reproduction that may be a pivotal turning point in the fate of these magnificent animals. Using eggs collected from the two remaining females and frozen sperm from deceased males, they successfully created two northern white rhino embryos. The embryos are now stored in liquid nitrogen to be transferred into a surrogate mother in the near future.