Nowak A., Sozophytes and the sozofloristic value ascriteria of ecosystem evaluations;
Holeksa J., Advantages anddis advantages of the strong position of phytosociology for nature conservation in Poland;
Bednarek R., Sewerniak P., Rutkowski L., Thecauses of soil and vegetation variability in the area of the designed "Dybowo" nature reserve near Toruń;
Gawenda-Kempczyńska D., Valuable features of springs in the Górzno-Lidzbark Landscape Park and their conservation;
Załuski T., Rutkowski L., Paszek I., Ejankowski W., Floristic evaluation of the nature reserve "Bielinek";
Babczyńska-Sendek B., Regional and supraregional aspects of protectionof the xerothermic grasslands in the Silesian Upland;
Bąba W., Kompała-Bąba A., The structure, dynamics and gap colonization incalcareous grasslands of the Cracow Jura;
Gutowski J.M., Krzysztofiak L., Directions and intensity of migration of the spruce bark beetle and accompanying species at the border between strict reserves and managed forests in north-eastem Poland;
Goc M., Iliszko L., Stempniewicz L.,The largest European colony of the Great Cormorant on the Vistula Spit (N Poland) - an impact on the forest ecosystem;
Zwolicki A., European Beaver Castor fiber - a keystone species for the river valleyecosystems;
Stempniewicz L., Keystone species and ecosystem functioning. Seabirds in polar ecosystems;
Barcikowski A., ŁyszkiewiczA., Loro P., Rektoris L., Smykla J., Wincenciak A., Zubel P., Keystonespecies and ecosystems functioning: the role of penguin colonies indifferentiation of the terrestrial vegetation in the Maritime Antarctic