Search results for "SPECIES"
showing 5 items of 4255 documents
The complex formation equilibria between Zn(II) and iminodiacetic acid (IDA) in NaClO4 1 M at 25°C
2009
Augājs kā pilsētvides indikators Daugavpilī
2014
Šajā promocijas darbā ir apkopoti 2006.-2013. gadā veikto pētījumu rezultāti, kuros ir analizēta vides pārveidotības pakāpe Daugavpilī. Pētījumā tiek izmantotas trīs dažādu indikatoru grupas – neofītās vaskulārās augu sugas, epifītie ķērpji un priežu miza. Neofītās augu sugas inventarizētas visos 344 pilsētas kvadrātos, lihenoindikācijas dati iegūti no 82 kvadrātiem, metālu saturs priežu mizās noteikts 50 paraugvietās. Iegūtie rezultāti liecina, ka augstākās Daugavpilī pētīto ķīmisko elementu koncentrācijas priežu mizā konstatētas industriālo objektu tuvumā, lihenoindikācijas zemākie rādītāji saistāmi ar pilsētas centrālo daļu, ko raksturo blīvs ceļu tīkls un intensīva satiksme, kā arī priv…
MACROLEPIDOPTERA SPECIES WITH VULNERABLE STATUS AND THEIR IMPACT ON THE PROTECTED AREA OF DUMBRAVA SIBIULUI
2013
The present work is a part of a complet study concerning of Macrolepidoptera from the forest “Dumbrava Sibiului” in the Sibiu county. They are presented only the species found by myself for the frist time from this area. I mention that these species were not found by me in the five collections of Lepidoptetra studied by me and preserved at the Natural Hystory Museum in Sibiu.
Flagship species of the Pieniny NP. protected ex situ at PAS BGCBDC seed bank at WARSAW-POWSIN
2014
Pieniny Mts. are important biodiversity hotspot in Central Europe. According to Pieniny National Park Long Term Conservation Plan 2000-2020 small, isolated populations of some of Pieniny NP flagship species can become extinct till 2020. That is why their ex situ preservation at seed bank is justified and reasonable as supplement of active and passive in situ conservation measures carried out by National Park staff. PAS Botanical Garden – Center for Biological Diversity Conservation at Warsaw-Powsin has a long tradition of cooperation with Pieniny National Park (S Poland). This article focuses on the actions undertaken during EU funded conservation project: “Ex situ conservation of native, t…
The “genetic erosion” of the soil ecosystem
2013
Abstract This paper takes into consideration the influence of human activities on the loss of pedodiversity in a Mediterranean area due to large scale farming. In particular it examines the quantitative and qualitative soil changes in a period of 53 years (from 1955 to 2008) evaluating the loss of soil diversity at soil subgroups level of the USDA Soil Taxonomy system. The following indices were used: richness; Shannon’s diversity index; Simpson diversity index; Shannon’s evenness index; Simpson’s evenness index. In this case study, considering what we observed in time, the human intervention in soil transformation could increase the diversity in the landscape in an initial phase, but forwa…