The paper presents a range of research carried out for the marine sciences using the GIS applications, which are documented scientific achievements of twenty years of Croatian-Polish cooperation in ...the field of geographic information systems. The resultant body of work includes, inter alia, scientific publications that are the effect of twenty international conferences organized in the framework of said cooperation efforts. The study included articles published in 1994 to 2013. An analysis of selected articles was done in accordance with the accepted range of topics in order to categorize and define the research extent. Among the distinguished six subject categories most of the articles were concerned with: marine policy strategy, marine engineering, marine biology, marine physics and some of them in marine fisheries and marine chemistry.
Abstract
Samples from Mongolian Ephedra (Ephedra equisetina Bunge) was collected in the Zaravshan Mountains (the Fann Mountains), Tajikistan. The wood of Ephedra is ring-porous with well-defined ...growth rings. Annual ring widths were measured, individual series were first cross-dated and then averaged as a standard chronology. Correlations were calculated between the standard ring-width chronology and monthly climate data recorded in the weather station Iskanderkul. Dendroclimatological analysis showed that July temperature is the growth limiting factor of this species. Our study has shown high dendrochronological potential of Ephedra.
The composition of the soil organic matter in soil developing under the influence of vegetation during the primary succession in the poor sandy area was investigated. The Curie-point pyrolysis method ...coupled with gas chromatographic separation and mass spectrometric identification of pyrolysates was applied during the investigation. A comparison of occurrence and diversity in composition of organic compounds in plant tissues and humus horizon of soils under the communities of coniferous forest series in the initial stages and phases was carried out. A large diversity of organic compounds under
Algae-Cyanophyta
communities, biological soil crusts and
Polytrichum piliferum
was noticed. A clear differentiation in the composition of the soil organic matter at different phases of succession under predominating communities with cryptogamous and vascular plants was observed. The analysis of organic compounds in plant tissues was found to facilitate the determination of origin of various groups of organic compounds in the soil. The results obtained from the Curie point pyrograms in the humus horizon (A) under grasses (
Corynephorus canescens, Koeleria glauca
) differed from the pyrolysates obtained under
Algae-Cyanophyta
communities. The polysaccharide derivates are more frequent in the pyrolysis products under algae, grasses (
Corynephorus canescens, Koeleria glauca
) and mosses than under
Pinus sylvestris
. In the beginning of the terminal stage of succession, lignin, phenols and aliphatic substances, prevailed over the polysaccharide derivates in the humus horizon.
Open-mined sand exploitation always leads to the total liquidation of vegetation and soil cover. The given study presents the relations between vegetation appearing in the excavation and soil ...development in the initial phases of succession. Investigations were carried out in the Kuznica Warezynska sandpit, located in the Silesian Upland in southern Poland. Results obtained indicate that at uncovered sands, due to exploitation in unreclaimed places, spontaneous regeneration of vegetation-soil cover occurs. In the succession series observed in the excavation, 3 stages were distinguished (primary, secondary and terminal), which were divided into 6 phases. The oldest observed succession stage was made by communities from the Dicrano-Pinion connection. The duration of succession of the oldest surfaces is estimated at 25 years. Considering morphology, the forming soil differs at every succession stage. In respect to observed soil formation processes, advancing soils, even the oldest surfaces, have initial character; they are poor in nutrients and characterized by acidic, slightly acidic to alkaline pH-reaction. Physico-chemical properties of soil, forming in the area of the sandpit, are conditioned most of all by the ground water level, its chemical composition and the duration of succession. Investigations proved that the course of succession at habitats fed mainly by waters, originated from the seepage of waters of deep circulation, and this differs from this those in places fed by the precipitation of waters. These differences appear most of all in the first phase of optimum stage. The sandpit is also characterized by a large differentiation of vegetation, resulting from the mosaic character of habitats. Habitat differentiation of the sandpit bottom is connected with its diversified relief and hydrogeological situation.
Rad daje pregled obavljenih istraživanja u području znanosti o moru upotrebom GIS alata, nastalih tijekom 20-godišnje Hrvatsko-Poljske suradnje u području primjene zemljopisnih informacijskih ...sustava. Rezultirajući opus uključuje, između ostalog, znanstvene radove koji su izloženi na dvadeset međunarodnih skupova organiziranih u okviru gore spomenute suradnje. Ovdje je datpregled radova objavljenih u razdoblju od 1994. do 2013. godine. Odabrani radovi su klasificirani po prihvaćenim tematskim područjima, u sklopu kojih su kategorizirani i analizirani po temama. Većina se radova u sklopu šest prihvaćenih tematskih područja bavila: strategijom zaštite mora, pomorstvom, biologijom, fizikom i kemijom mora te ribarstvenom problematikom.
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