Ekologia Polska: Seria A.Państwowe Wydawnictwo Naukowe, 1969 - Ecology |
Contents
Głazek T An investigation on the ecology of Cerasus fruticosa Pall | 1 |
Dobrowolski K A Structure of the occurrence of waterfowl types | 2 |
Herbichowa M Primary production of a potato field | 75 |
8 other sections not shown
Other editions - View all
Common terms and phrases
alfalfa algae amount amphibians animals arvalis average Aythya biomass birds Blackbird bottom sediments breeding calorific value Cerasus fruticosa Chironomidae Chrysosporium Colorado beetle complanatus composition crop cultures decrease density Diptera druk eggs Ekol entomophags fecundity feeding females field gatunków groups habitat Heterodera Hymenoptera imagines increase infestation insects intensity investigations isolated Jijila July Kampinos National Park larvae layer Lepidoptera Łódź Łodzi Lumbricidae lygus lygus bugs maximum Mikołajskie Lake nannoplankton nematodes nestlings nests Nowy Świat 72 number of individuals nymphs observed obtained occur oligotrophic organic matter oxygen consumption parasites particles percentage period phytoplankton plankton plants Poland pollen pollen loads populacji population portion of lake potato primary production Redakcji Redaktor reeds ridibundus rugulipennis sampler samples schachti season sediments Skoroszów Forests Śniardwy soil Song-thrush species starling Tałtowisko temperature tion total number variations Warszawa zone zooplankton