scholarly journals THE MACROPHYTE FLORA AND VEGETATION OF THE PAUČKO LAKE (MT. KONJUH)

2021 ◽  
Vol 50 (1) ◽  
pp. 4-11
Author(s):  
Jasmina Kamberović ◽  
Avdul Adrović ◽  
Enes Modrić ◽  
Zorana Lukić ◽  
Radenko Nešković
Keyword(s):  
Catchment Area ◽  
Marsh Plant ◽  
Marsh Vegetation ◽  
Natural Landscape ◽  
Small Surface ◽  
Plant Associations ◽  
Species Restoration ◽  
Thelypteris Palustris ◽  
Restoration Measures ◽  
Menyanthes Trifoliata

UDK: 581.9:574.5 (497.6) (285) The study presents the first data on biodiversity of macrophyte flora and vegetation of Paučko Lake, which is recognized as an area of great natural, landscape and hydrological value in the Protected Landscape “Konjuh”. Paučko Lake has a small surface and it’s located at 711 m a.s.l. in the catchment area of the Drinjača River. The aquatic and marsh vegetation were studied during spring and summer in 2018 using the traditional Zürich-Montpellier approach. The vegetation of Paučko Lake is comprised of aquatic and marsh associations of the classes Potamogetonetea Klika in Klika et Novák 1941 and Phragmito-Magnocaricetea Klika in Klika et Novák 1941. The following aquatic and marsh plant associations were identified: Myriophyllo-Potametum Soó 1934, Scirpo-Phragmitetum australis W. Koch 1926, Thelypterido palustris-Phragmitetum australis Kuiperex van Donselaar et al. 1961, Schoenoplectetum lacustris Chouard 1924, Typhetum latipholiae Lang. 1973 and Scirpetum silvatici Ht et H-ić prov. (in Ht et al.1974). Rare vulnerable taxa Thelypteris palustris Schott and Menyanthes trifoliata L. were recorded in emerged littoral communities, whose habitats are under successional changes caused by excessive macrophyte overgrowth by competitor species. Restoration measures are necessary to be taken to preserve the habitats of endangered species of the Paučko Lake.

scholarly journals Characteristics of Selected Lakes with Aeolian and Karst Genesis in the Holy Cross Region

2020 ◽  
Vol 20 (2) ◽  
pp. 59-64
Author(s):  
Adam Choiński ◽  
Artur Zieliński
Keyword(s):  
Surface Waters ◽  
Catchment Area ◽  
High Variability ◽  
Morphometric Parameters ◽  
Small Surface ◽  
Study Results ◽  
Karst Genesis ◽  
Small Surface Area ◽  
Physical And Chemical ◽  
Chemical Water

AbstractIn the belt of the Polish Uplands, including the Holy Cross Region, lakes occur sporadically. In some places, however, they are somewhat more abundant. They are usually objects with a small surface area. The majority of them have not been subject to thorough investigation. Therefore, the objective of the paper is the expansion of knowledge regarding these lakes. The paper among others presents the characteristics of several lakes with aeolian genesis located on the Przedbórz Upland in the catchment area of the Wierna River and in the Nida Basin near the towns of Busko-Zdrój and Pińczów. The study results determine the morphometric parameters of the lakes, also pointing to an exceptionally high variability of physical and chemical water properties, as well as the possibility of periodical disappearance of the lakes. Moreover, the study results provide a necessary and solid basis for further investigation of the lakes, which in the context of the observed increasingly serious water deficit and decrease in the level of surface waters and groundwaters is undoubtedly of high importance.

scholarly journals Morphometry of Gelionys and Žaliasis Lakes

2021 ◽  
pp. 69-86
Author(s):  
Marijus Pileckas ◽  
Tauras Alekna ◽  
Vaidotas Valskys
Keyword(s):  
Surface Area ◽  
Catchment Area ◽  
Water Surface ◽  
Average Distance ◽  
Maximum Depth ◽  
Surface Elevation ◽  
Water Level Fluctuations ◽  
Small Surface ◽  
Water Surface Elevation ◽  
Depth Measurement

Bathymetric surveys of Gelionys and Žaliasis Lakes (located in the Baltic Uplands, Aukštadvaris Regional Park, Lithuania) were carried out on April 21, 2020, from a boat with attached Lowrance HDI SKIMMER XDCR transducer (200 kHz), Simrad GO5 chartplotter and Lowrance Point-1 GPS/Glonass receiver. At the same time, the shorelines of the lakes were revised. Average distance between profiles was ~10 m and depth measurement accuracy up to 2–5 cm. Accuracy of water surface elevation measurement using GNSS receiver Topcon Hiper SR up to 1–2 cm. Later, detailed (0.5 × 0.5 m) digital lake bottom models (DEM) were developed, bathymetric plans of the lakes were created, the main morphometric features were calculated, the boundaries and area of the lake catchments were defined, and the physical-geographical characteristics of the lakes were described based on field observations and various data. Gelionys and Žaliasis are small lakes of glaciokarst origin. Gelionys Lake is oval-shaped while shape of Žaliasis Lake is closer to the circle. Despite small surface area the lakes are quite deep. According to survey data, the surface area of Gelionys Lake is 4.79 ha, water surface elevation 216.1 m a.s.l., maximum depth 19.8 m, mean depth 6.0 m, volume 288.3 thousands m3, catchment area 71 ha. The surface area of Žaliasis Lake is 2.14 ha, water surface elevation 120.9 m a.s.l., maximum depth 15.84 m, mean depth 5.7 m, volume 122.2 thousands m3, catchment area 60 ha. During the observation period (from May of 2018 to September of 2020), the annual amplitude of water level fluctuations in Gelionys Lake reached up to 0.47 m, and in Žaliasis Lake up to 0.33 m. Keywords: Gelionys, Žaliasis, glaciokarst, lake, bathymetric chart, morphometry, Lithuania, Aukštadvaris Regional Park.

Vegetation structure and diversity components of a Fraser estuary tidal marsh

1982 ◽  
Vol 60 (4) ◽  
pp. 440-451 ◽  
Author(s):  
Gary E. Bradfield ◽  
Glendon L. Porter
Keyword(s):  
Vegetation Structure ◽  
Festuca Arundinacea ◽  
Tidal Marsh ◽  
River Estuary ◽  
Hydrological Regime ◽  
Reciprocal Averaging ◽  
Marsh Vegetation ◽  
Vegetation Zones ◽  
Components Analysis ◽  
Menyanthes Trifoliata

Vegetation data from a predominantly freshwater-influenced tidal marsh in the Fraser River estuary are analysed to investigate different properties of community structure. Three main vegetation zones are recognized, dominated respectively by Carex lyngbyei, Festuca arundinacea, and Menyanthes trifoliata. The zones occupy parts of the marsh which differ primarily in hydrological regime: the Carex zone occurs in regularly flooded and drained areas, mainly along tidal creeks; the Festuca zone occurs on infrequently flooded levees; the Menyanthes zone occurs in areas of impeded drainage, mainly between tidal creeks.Principal components analysis and reciprocal averaging gave similar results except for a 90° rotation of ordination axes. The combined results from cluster analysis and ordination give a useful summary of the marsh vegetation structure. The evaluation of various diversity measures including species richness, species density, beta diversity, and species evenness provided a useful basis for making comparisons and helped to focus attention on factors influencing community development.

scholarly journals Assessing the Fractional Abundance of Highly Mixed Salt-Marsh Vegetation Using Random Forest Soft Classification

2020 ◽  
Vol 12 (19) ◽  
pp. 3224
Author(s):  
Zhicheng Yang ◽  
Andrea D’Alpaos ◽  
Marco Marani ◽  
Sonia Silvestri
Keyword(s):  
Salt Marsh ◽  
Random Forest ◽  
Near Infrared ◽  
Salt Marsh Vegetation ◽  
Marsh Vegetation ◽  
Classification Approach ◽  
Plant Associations ◽  
Fractional Abundance ◽  
Soft Classification ◽  
Vegetation Species

Coastal salt marshes are valuable and critical components of tidal landscapes, currently threatened by increasing rates of sea level rise, wave-induced lateral erosion, decreasing sediment supply, and human pressure. Halophytic vegetation plays an important role in salt-marsh erosional and depositional patterns and marsh survival. Mapping salt-marsh halophytic vegetation species and their fractional abundance within plant associations can provide important information on marsh vulnerability and coastal management. Remote sensing has often provided valuable methods for salt-marsh vegetation mapping; however, it has seldom been used to assess the fractional abundance of halophytes. In this study, we developed and tested a novel approach to estimate fractional abundance of halophytic species and bare soil that is based on Random Forest (RF) soft classification. This approach can fully use the information contained in the frequency of decision tree “votes” to estimate fractional abundance of each species. Such a method was applied to WorldView-2 (WV-2) data acquired for the Venice lagoon (Italy), where marshes are characterized by a high diversity of vegetation species. The proposed method was successfully tested against field observations derived from ancillary field surveys. Our results show that the new approach allows one to obtain high accuracy (6.7% < root-mean-square error (RMSE) < 18.7% and 0.65 < R2 < 0.96) in estimating the sub-pixel fractional abundance of marsh-vegetation species. Comparing results obtained with the new RF soft-classification approach with those obtained using the traditional RF regression method for fractional abundance estimation, we find a superior performance of the novel RF soft-classification approach with respect to the existing RF regression methods. The distribution of the dominant species obtained from the RF soft classification was compared to the one obtained from an RF hard classification, showing that numerous mixed areas are wrongly labeled as populated by specific species by the hard classifier. As for the effectiveness of using WV-2 for salt-marsh vegetation mapping, feature importance analyses suggest that Yellow (584–632 nm), NIR 1 (near-infrared 1, 765–901 nm) and NIR 2 (near-infrared 2, 856–1043 nm) bands are critical in RF soft classification. Our results bear important consequences for mapping and monitoring vegetation-species fractional abundance within plant associations and their dynamics, which are key aspects in biogeomorphic analyses of salt-marsh landscapes.

Natural and anthropogenic transformations of water and marsh vegetation in Lake Zbęchy (Wielkopolska Region)

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Hanna Gołdyn ◽  
Ewa Arczyńska-Chudy ◽  
Piotr Pińskwar ◽  
Maria Jezierska-Madziar
Keyword(s):  
Rural Area ◽  
Submerged Macrophytes ◽  
Marsh Vegetation ◽  
Plant Associations ◽  
Maximal Depth

Natural and anthropogenic transformations of water and marsh vegetation in Lake Zbęchy (Wielkopolska Region)Lake Zbęchy is situated in the General Chłapowski Landscape Park, which is the model of a rural area that has been subjected to agricultural pressure for many years. Over a thirty-year period (1976-2006) serious changes in the plant associations of Lake Zbęchy have occurred. The maximal depth of plant occurrence decreased from 3.6 m in 1976 to 2 m at present. The area overgrown by submerged macrophytes decreased from 13 to 0.2 ha. The community of

Diffuse nutrient impact on surface water bodies and its abatement by restoration measures in a small catchment area in North-East Germany

1996 ◽  
Vol 33 (4-5) ◽  
pp. 167-174 ◽  
Author(s):  
J. Gelbrecht ◽  
E. Driescher ◽  
H. Lademann ◽  
J. Schönfelder ◽  
H.-J. Exner
Keyword(s):  
Catchment Area ◽  
Nutrient Loading ◽  
Subsurface Water ◽  
Arable Soils ◽  
Small Catchment ◽  
Nutrient Sources ◽  
North East ◽  
Ne Germany ◽  
Different Sources ◽  
Restoration Measures

Water resources management in NE Germany is still confronted with the consequences of eutrophication. Since the majority of nutrient loading is of diffuse origin, an exact understanding of the various sources is a prerequisite to reducing their impact on surface waters. Control of diffuse pollution demands a “strategy of little steps”, i.e. a variety of numerous measures at different locations in the whole catchment area. The paper describes different nutrient sources, especially those of phosphorus, in a small catchment, provides data on the sources and amounts of pollution and demonstrates proposals and strategies for abatement (e.g. reduction of fertilizers, restoration of wetland and brook stretches, development of ponds). Among the different sources, subsurface water enriched with phosphorus, plays an essential role, because arable soils are oversupplied with phosphorus and the sorption capacity of several soils is nearly exhausted.

WetVegEurope: a database of aquatic and wetland vegetation of Europe

2015 ◽  
Vol 45 (1) ◽  
pp. 187-194 ◽  
Author(s):  
Flavia Landucci ◽  
Marcela Řezníčková ◽  
Kateřina Šumberová ◽  
Milan Chytrý ◽  
Liene Aunina ◽  
...  
Keyword(s):  
Plant Species ◽  
Wetland Vegetation ◽  
European Countries ◽  
Vegetation Types ◽  
Marsh Plant ◽  
Research Project ◽  
Marsh Vegetation ◽  
Future Studies ◽  
Aquatic And Wetland Vegetation

WetVegEurope is a research project (http://www.sci.muni.cz/botany/vegsci/wetveg) whose goal is to provide a synthesized formalized classification of the aquatic and marsh vegetation across Europe at the level of phytosociological associations. In order to achieve the project objective, a WetVegEurope database has been created (GIVD ID: EU-00-020, http://www.givd.info/ID/EU-00-020), which currently contains 375,212 vegetation plots of aquatic, marsh and wet vegetation types from 33 European countries. The WetVegEurope database includes datasets from pre-existing national and thematic databases and also 10,616 plots previously not digitalized or even unpublished. This database offers an extensive source of data for future studies on aquatic and marsh plant species and vegetation types at the European scale.

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