Biological diversity - means the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ekological complexes of which they are part; this includes diversity within species, between species and ecosystems, as Biological Diversity Convention says. In this work was made analysis of forest data of State Forest Enterprise of Kaisiadorys, Buda forest district. Atention was paid to the forest elements that can promote biological diversity. The archive data of managment (1977,1987,1996,2003 years)of Buda forest district used for assessment. Stand species diversity was analyzed using Number of species, Diversity, Proportionality and Dominance indexes. Thestand diversity dynamics of the Buda forest district was analyzed accordind to these indexes. There also were analyzed Species of Data Red Book of Lithuania of forest district, reserves teritories and key habitat teritories of Buda forest district.That supported to mark 2 teritories of Great biodiversity and 8 hotspots of biological diversity on the map of analyzed forest district.

Magistro darbe tiriami Neries regioninio parko vabzdžiai , įtraukti į Raudonąją knygą. Darbo objektas- niūriaspalvis auksavabalis (Osmoderma eremita Sc.) , gencijoninis melsvys (Makulinea alcon D.& S.), Darbo tikslas- ištirti kai kurių vabzdžių , įtrauktų į Raudonąją knygą, paplitimą ir gausumą Neries regioniniame parke. Darbo metodai - duomenys buvo renkami naudojantis P.Ivinskio ir J.Rimšaitės bestuburių monitoringo metodika . Darbo rezultatai. Atlikus tyrimus ir įvertinus nustatyta , kad niūriaspalvis auksavabalis (Osmoderma eremita) labiau mėgsta senus , drevėtus , gerai apšviestus medžius. Labiausiai jam tinkamas ąžuolas. Gencijoninis melsvys (Makulinea alcon D.& S.), dažniausiai aptinkamas pietiniuose , gerai apšviestuose šlaituose ,kur vyrauja žema žolinė danga. Būtina sąlyga- augalai melsvieji gencijonai (Gentiana cruciata) ir Myrmica genties skruzdėlės Norint užtikrinti palankias sąlygas niūriaspalviam auksavabaliui , būtina išsaugoti kertines miško buveines ir senus , drevėtus medžius. Norint išsaugoti gencijoninį melsvį būtina prižiūrėti populiacijai tinkamus upių šlaitus ,neleidžiant užaugti aukštai žolinei dangai ir krūmams. / In the master’s of science work the Neris regional park’s insects included in the Red Book are being researched. The object of the work is Osmoderma eremite Sc. and gentian lycaena (Makulinea alcon D.& S.). The objective of the work is to research the diffusion and abundance of some insects included in the Red Book in the Neris regional park. The methods of the work. The data had been collected by using P. Ivinskis and J. Rimšaite methods of invertebrates‘ monitoring. After the research was carried out and the facts estimated, it was established that Osmoderma eremite prefers old, hollow and well-lighted up trees. Oak tree is the most suitable one. Gentian lycaena ( Makulinea alcon D. & S.) is most frequently discovered in southern, well-lighted up slopes where low grass prevails. Gentiana cruciata and ants of Myrmica genus are an indispensable condition. If one wishes to ensure auspicious conditions for Osmoderma eremite Sc., it is necessary to preserve the most important for them forestry habitats and old hollow trees. If one wishes to preserve gentian lycaena, it is necessary to look after river slopes suitable for the population not allowing to grow tall grass and bushes.