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The paper presents a list of lichen species collected in the woody reserve “Las Zwierzyniecki” in Białystok. In total 45 species, have been recorded nine of which belong to the group threatened lichens in Poland (Cieśliński et al. 2006), one is partially protected, and fi ve are to by come totally protected (Regulation of 2004). The paper contains fi ndings of lichenbiota changes after 10 years. During the current research seven species have not been confi rmed, which represents 13% of the total reserve lichenbiota and nine new ones have been found.
The present paper aims at describing the biota of lichens of the Zadroże Dune and its adjacent area in Toruń. The research on lichens was conducted during the years 2005-2006. The data on lichens come from my own research and literature. Altogether, the occurrence of 82 lichen taxa was recorded in the investigated area, including 74 species recorded during my own research. Due to the availability of habitats and substrata, terricolous species dominate here, mainly from the genus Cladonia and Cetraria. Particularly noteworthy are rare, endangered and protected species from this area e.g. Peltigera canina, Polyblastia agraria, Rinodina conradii and Stereocaulon condensatum
The paper presents a list of 94 species of lichens found in central part of the Landscape Park “Podlasie Bug Water Gap”. Among them, 16 species are endangered in Poland. The most valuable components biota of lichen belong to endangered species nationally. They are: Melanelixia subargentifera, Pleurosticta acetabulum, Ramalina fraxinea, Usnea filipendula and others.
Sediments and organisms were sampled to determine organotin contents – butyltins (BTs) and phenyltins (PhTs) – at 12 locations in an estuarine ecosystem, the Lagoon of Venice, characterised by varying contamination impacts. The results showed that organotin contamination in sediments is at lower levels, ranging from 2.5±0.1 to 84±1 ng g−1 (d.w.) for ΣBTs and from 0.8±0.2 to 7±1 ng g−1 (d.w.), for ΣPHTs, than in organisms, where the highest concentrations were found in filter feeders like mussels – from 60±3 to 7632±148 ng g−1 (d.w.) for ΣBTs and from 0.80±0.01 to 4005±121 ng g−1 (d.w.) for ΣPHTs. The possible risk to human health was assessed on the basis of the consumption of edible species sampled in some areas of the lagoon.
An increased worldwide usage of platinum group elements (PGE) has been observed during recent decades. High amounts of PGE are applied in such areas as chemical industry and jewellery production, but the increased demand for these metals primarily depends on the introduction of automobile catalytic converter systems. Catalytic converters have also been considered to be a major source of PGE pollution. The similar Pt:Rh ratio, which is used in these autocatalysts, was found in various environmental samples as well. The present literature review indicates that the concentration of these metals has increased considerably in the last twenty years in different environmental matrices, resulting in ecological and human health risks. Because of the importance of PGE and their trace levels in environmental and biological matrices, sensitive methods are required for reliable determination. Details of the particular steps of analytical procedures for PGE quantification in environmental samples such as road dust, airborne particulate matter, soil, benthic sediments, water, wastewater and biological samples are discussed. Sampling and sample storage and preservation techniques are presented. Moreover, the most frequently used extraction, enrichment, detection and determination procedures for PGE are described.
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