Immigrants in Sofia between nonstandard and Standard Bulgarian

New Bythinella (Gastropoda, Bythinellidae) species from western Turkey

“…The two closely related species Bythinella angelitae and Bythinella opaca can be morphologically separated only by radular dentition, and the geographic range of Bythinella angelitae is restricted to the border areas of Austria and Slovenia (Haase et al 2007). Although they have been recorded in previous studies (Wagner 1941; Grossu 1956; Angelov 1960, 2000), Bythinella austriaca (Frauenfeld, 1857) and Bythinella opaca (M. von Gallenstein, 1848) have not been confirmed from the eastern Balkan countries in recent studies (Falniowski et al 2009a, b). Therefore, there is a large distribution gap between the ranges of Central European taxa and that of Bythinella istanbulensis sp.…”

Analysis of oilseed rape stem weevil chemical control using a damage rating scale

“…Cabbage stem weevil and rape stem weevil in this area usually occur at the same time, and chemical control, if needed, can be done simultaneously for both species with a single foliar spraying. The sampled weevils of both species and their sexes were identified according to several identification keys . During this period, the ratio between the two weevil species was established to be almost 1:1 (0.93), and the sex ratio for the rape stem weevil was 0.49 and for the cabbage stem weevil 0.37, as shown in Table .…”

Influence of Some Environmental Factors on Summer Phytoplankton Community Structure in the Varna Bay, Black Sea (1992–2019)

“…Temperate marine ecosystems react to climate changes at all trophic levels, both in terms of their development and in terms of the physiological processes (metabolism rate, breathing, nutrition of the hydrobionts [1,2]) and dynamics of the populations [3][4][5]. The main limiting factors for the long-term changes in their functions and, more specifically, in the phytoplankton structure are temperature, light, and nutrients [6].…”