Doing study on population ecology of wolves, we faced with the phenomenon of hybridization beetwen wolf and domestic (actually stray) dog. Such hybridization of wolves and dogs is a question worthwhile to consider in the aspect of the wolf reproduction biology. Firstly, it relates to breeding of wolves; secondly, such a hybridization may be considered as the extreme effort of the last wolf individuals to maintain the declined population with such an abnormal reproduction.
Since the early 1980s, I have spent much time in Naliboki Forest. Mostly doing the study on vertebrate predators, I always snatched an opportunity to visit the remains of the primeval forest, where trees saw axe and saw rarely and where some of the trees still remembered the Middle Age time. Such pristine forest magnetized so much.
In this terrain broad-leaved deciduous forest older than 100 years (i.e. real broad-leaved deciduous oldgrowth) survived on a very small part of Naliboki Forest only – 0.3% (it is about 6 km2). Nevertheless, in Belarus and other neighbouring regions there are actually a few forest massive, where such centuries-old forest plots still exist, and, so, Naliboki Forest is one of them. In these oldgrowth patches the oldest oak trees, which grow on the distance of 15-60 meters apart, have an age of 200-400 years. In the oldest tree stands the mean oak age constituted 326 years old according to 14 estimates. Also, in the deciduous broad-leaved oldgrowth there are old maples, limes and ashes (but ashes die in numbers nowadays). Continue reading “Broadleaved deciduous oldgrowth in Naliboki Forest and the main predator-prey relationships in its community of vertebrates”