Changes of the concentrations of dissolved chemical compounds migrating into ground water through biogeochemical barriers in an agricultural landscape

Szajdak, Lech Wojciech; Zyczynska-Baloniak, I.; Jaskulska, R.; Szczepański, Marek

doi:10.2478/v10009-009-0048-y

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…It proves the protective dimension of the study and contradicts the research hypothesis. Numerous studies show that a network of areas with trees improves the habitat conditions and reduces the spread of pollution -which is particularly important in an agricultural landscape [38][39]. The extension of built-up and afforested areas will cause a considerable loss of farmland.…”

Section: Discussionmentioning

confidence: 99%

Land Cover Changes in Natura 2000 Areas Located in Suburban Zones: Planning Problems in the Context of Environmental Protection

Gałecka-Drozda¹,

Raszeja²,

Szczepańska³

et al. 2018

Pol. J. Environ. Stud.

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The aim of the article was to identify changes in the structure of land use and land cover in the context of spatial planning problems. The research was conducted on valley areas protected under the Natura 2000 programme and that are located within the zone of influence of a big city. The researchers analysed local planning documents to see whether they were in agreement with the aims of the protection programme. The Natura 2000 areas located in the Commune of Stęszew, Poznań County were chosen for a case study. The article describes recurrent problems and phenomena that are typical of the protected areas and that are simultaneously affected by the pressure of urbanisation. GIS tools were used to make a comparative analysis of six categories of land use forms in three research periods and to calculate the indicator of land cover variance. Since the 1980s, the areas under study have been affected by changes in land use. They have been manifested by a higher forestation rate, increasing numbers of developed areas, and a decrease in farmland area. The percentage of other components of the land cover structure has not changed much. In view of environmental protection, the changes proposed in spatial plans are a matter of special concern. The territory under analysis is characterised by a very high land cover variance indicator referring to the developed area, whereas the indicators referring to farmland and wetland areas are negative. It is particularly difficult to apply the rule of sustainable development in the areas. The protection of natural values and the developmental needs of the commune stand in opposition to each other and cause spatial planning conflicts.

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Section: Discussionmentioning

confidence: 99%

Land Cover Changes in Natura 2000 Areas Located in Suburban Zones: Planning Problems in the Context of Environmental Protection

Gałecka-Drozda¹,

Raszeja²,

Szczepańska³

et al. 2018

Pol. J. Environ. Stud.

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“…This impact was also distinct in the River Nielba below the inlet of this ditch, where the P load increased 7 times. This impact was less distinct in the case of N because the studies were conducted during spring, when the release of N as nitrates from the agricultural areas is the most intensive (Szajdak et al 2009). The loads of nutrients inflowing to Lake Łeknenskie at the time of the increased river water level in spring were comparable to the values noted in 2012 in the case of P (2.23 mg P d -1 ), but significantly higher for N (over 300 kg N d -1 ).…”

Section: Nutrient Loadsmentioning

confidence: 99%

A shallow lake in an agricultural landscape – water quality, nutrient loads, future management

Dondajewska

Gołdyn

Messyasz

et al. 2019

Limnological Review

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Qualitative analyses of nitrogen and phosphorus loads reaching the lake ecosystem provide a basis for pollution control, which is of paramount importance in shallow lakes due to the rapid turn-over of matter and energy. The studies of both external and internal loading were conducted in Lake Łeknenskie, a very shallow, through-flow lake situated in Western Poland. Strong eutrophication is manifested in rich rush vegetation and a lack of submerged macrophytes as well as nitrogen and phosphorus concentrations (max 13.04 mg N dm−3 and 0.32 mg P dm−3, respectively). Constant domination of cyanobacteria in the phytoplankton community was noted in almost all seasons with a 98% share in summer, resulting in 20 cm water transparency and 223 μg dm−3 of chlorophyll-a. The zooplankton community was dominated by rotifers. The main source of nutrients was the River Nielba. Spatial external nutrient loading was 1.93 g P m−2 yr−1 and 77.55 g N m−2 yr−1. An even higher load of phosphorus was released from the bottom sediments, 2.18 g P m−2 yr−1. A comprehensive action plan is required, aiming at the reduction of both external and internal nutrient loading. A series of solutions regarding local environmental conditions should be applied in the lake catchment, including biogeochemical barriers, denitrification walls, artificial retention basins or wetlands, but most of all – improvement in the functioning of the wastewater treatment plant. Restoration is possible, however, protection measures reducing external loading should be undertaken prior to phosphorus inactivation in the water column and in the bottom sediments, supported by biological methods e.g. biomanipulation.

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Heavy metal contents in the sediments of astatic ponds: Influence of geomorphology, hydroperiod, water chemistry and vegetation

Gołdyn

Chudzińska

Barałkiewicz

et al. 2015

Ecotoxicology and Environmental Safety

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Changes of the concentrations of dissolved chemical compounds migrating into ground water through biogeochemical barriers in an agricultural landscape

Cited by 3 publications

References 3 publications

Land Cover Changes in Natura 2000 Areas Located in Suburban Zones: Planning Problems in the Context of Environmental Protection

Land Cover Changes in Natura 2000 Areas Located in Suburban Zones: Planning Problems in the Context of Environmental Protection

A shallow lake in an agricultural landscape – water quality, nutrient loads, future management

Heavy metal contents in the sediments of astatic ponds: Influence of geomorphology, hydroperiod, water chemistry and vegetation

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