11 research outputs found
The development tendencies of halophytes and their protection in Poland
The authoress discusses the distribution of halophytes
over the Earth, as well as their development, utilisation and
protection. In Poland there are 3 reserves preserving the
halophilous flora, but the results of protection are not yet
sufficient.Zadanie pt. Digitalizacja i udost臋pnienie w Cyfrowym Repozytorium Uniwersytetu 艁贸dzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet 艁贸dzki nr 885/P-DUN/2014 zosta艂o dofinansowane ze 艣rodk贸w MNiSW w ramach dzia艂alno艣ci upowszechniaj膮cej nauk臋
Micropattern of halophytic vegetation on technogenic soils affected by the soda industry
Ecological Problems in the Conservation of Plant Communities, with Special Reference to Central Europe
Biomass production of maize ( Zea mays L.) cropping in exceptionally advantageous conditions in central Wielkopolska (Poland)
Transplantation of lichen thalli: a case study on Cetraria islandica for conservation and pharmaceutical purposes
Abiotic factors affecting the development of Ulva sp. (Ulvophyceae; Chlorophyta) in freshwater ecosystems
The influence of physicochemical factors on the development of Ulva species with distromatic tubular morphology was studied in three streams located in Poznan, Poland. The study evaluated key environmental factors that may influence the colonisation and growth of Ulva populations in freshwater systems. In total, nine environmental parameters were included: temperature, water depth, pH, oxygen (O2), ammonium (NH4),nitrate (NO3-), phosphate(PO43-), sodium chloride (NaCl) and total iron (Fe). Morphometric features of thalli (length and
width, percentage of furcated and young thalli) and surface area of free-floating mats formed by the freshwater populations of Ulva were compared at all sites. Principal components analysis indicated the
most important factors influencing Ulva development were sodium chloride concentrations and water depth. Two other key chemical factors affecting the freshwater form of Ulva were phosphate and nitrite concentrations. High concentrations of sodium chloride inhibited the development of Ulva, leading to a lower number of thalli in the Ulva mats. At the siteswith stable and deeper water, the surface area of the
mats was larger. Both phosphate and nitrite concentrations were positively correlated with an increase in the number of thalli in the mats and the thalli length