Ekologia Polska, Volume 15

abundance age class agrarius Andrzejewski animals Apodemus Apodemus flavicollis arvalis association average biocenometer biomass biotopes birds black-headed gull Brzeski Bufo Bufo bufo calculated caught Clethrionomys Clethrionomys glareolus comparison density Diplogasteridae Diptera dominants Druk eggs Ekol estimate females Fringilla coelebs gatunków Gdańsk habitat herb layer humidity increase Insectivora insects intensity of occurrence investigations Ixodes ricinus Jadwisin I found larvae liczebności Łódź Łodzi mammals method nematodes nicieni Nowy Świat Nowy Świat 72 number of captures number of individuals number of larvae number of species observed obtained occurred osobników percentage period Petrusewicz photo-eclector Phylloscopus collybita phytoplankton pine Pinetum Pino-Quercetum plants Poland Polish Academy population production quantitative Redaktor Rodentia rodents sample areas Sandner Serafińska small mammals spruce standing crop stations sugar beet Sylvia borin temperature Tilio-Carpinetum tion total number trappability trees Tylenchida typicum Vaccinio myrtilli-Pinetum variations weight Witkowski