Wyniki wyszukiwania

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Zmiany we florze rezerwatu przyrody 'Ostrow Panienski' kolo Chelmna w latach 1965-2001

100%

Jagodzinski A. M., Maciejewska-Rutkowska I.

Studia Naturae

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2008

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tom 54

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nr 2

121-131

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Tempo dekompozycji opadu organicznego podczas przemian siedlisk łęgowych

100%

Kawalko D., Halarewicz A., Kaszubkiewicz J., Jezierski P.

Sylwan

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2017

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tom 161

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nr 07

Disturbances occurring in the riverside forest ecosystems also translate into the ability of litter decomposition. Determination of the litter decomposition rate and the changes in its chemical composition in the course of riparian habitat changes was the aim of the study. The study was conducted in 2011 in Jezierzyca River Valley Landscape Park located partly on a floodplain of Oder river (SW Poland). Two riparian forest habitats (Ficario Ulmetum−minoris) were selected for the study: site L (riparian forest), immediately adjacent to the old river bed and site LZ (drying riparian forest), bordering site L on the edge of the floodplain and adjacent to oak−hornbeam forest (Galio sylvatici−Carpinetum betuli) that constituted site G. The study used the method of litter bags. The research material was collected every quarter except for winter, during 2 years. The decomposition rate of organic matter defined by the loss of organic matter, understood as the difference between the previous and the current state. We analyzed content of total organic carbon, total nitrogen and available phosphorus, potassium and magnesium in the litter fall. As the result, decomposition occurred the most rapidly in the oak−hornbeam forest community and the slowest in the drying riparian forest. Regardless of the type of forest community rate of decomposition of the fresh organic matter is the highest in winter and spring. The highest content of organic carbon and total nitrogen was observed in the oak−hornbeam forest, slightly lower in the riparian forest, while the lowest in the drying riparian forest. Similarly the content of available phosphorus, potassium and magnesium was presented. Along with the progressive decomposition, examined material had increased Corg and N content, but reduced C/N ratio. In all analyzed forest communities were found the release of P, K and Mg in the environment, which was the most intense in spring and summer.

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Przekształcenia roślinności łęgowej w rezerwatach przyrody Polski Środkowej

100%

Grzelak A.

Przegląd Przyrodniczy

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2011

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tom 22

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nr 3

4

Różnorodność gleb olsów i łęgów

100%

Wanic T., Brozek S., Lasota J., Zwydak M.

Roczniki Gleboznawcze

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2011

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tom 62

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nr 4

5

Występowanie klonu polnego Acer campestre L. na terenie rezerwatów przyrody "Ostrów Panieński" i "Łęgi na Ostrowiu Panieńskim" koło Chełmna

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Jagodzinski A. M., Kubiak M., Warnkowska A., Ziolkowski J., Dopierala N., Rosik S., Motyl A., Lukowski A., Koter A., Katna B., Opielka K., Barycza A., Janiszewski K., Prais H., Wronska-Pilarek D.

Parki Narodowe i Rezerwaty Przyrody

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2011

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tom 30

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nr 1-2

6

Florystyczne i fitocenotyczne wskaźniki stanu zachowania lasów zalewowych w miejskiej dolinie rzecznej

100%

Stefanska-Krzaczek E., Podgrudna K.

Sylwan

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2015

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tom 159

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nr 01

Urban river valleys are exposed to strong anthropogenic pressure, but despite these distortions they provide important habitats in urban areas. Not embanked forests are particularly valuable in urban river valleys as they represent fragments of natural vegetation in a highly changed environment. The study assesses the flora and structure of forest communities in a riparian urban forest complex that is under the direct influence of river water. Las Pilczycki Forest in Wrocław (SW Poland) is such a riparian forest island. We analysed the species richness and composition in terms of the phytocoenoses variability and their syntaxonomic classification. We also investigated if the vegetation can indicate a spatial differentiation in habitat conditions. Floristic and phyto− sociological data were collected from 70 circular plots (100 m2 each) located in a grid. A total of 81 species were recorded, with a mean of 21 species per plot. Most frequent were: Acer campestre, Acer platanoides, Anemone nemorosa, Ficaria verna, Fraxinus excelsior, Galium aparine, Geum urbanum, Impatiens parviflora and Sambucus nigra. In biological spectrum the most numerous were hemi− cryptophytes, megaphanerophytes and geophytes. The number of alien species was minor (9% of the flora). The most frequent anthropophyte was Impatiens parviflora. Soil moisture, acidity and fertility indices exhibited spatial correlations and they were higher in the western part of the forest. The moisture index was also higher in the northern part. Species richness ranged from 13 to 32 (with a mean of 21 species). Two forms of Ficario−Ulmetum minoris were identified: with Galanthus nivalis and with Tilia cordata. The first was a well−structured riparian community, while the latter one represented the drained floodplain forest. Vegetation units are spatially separated, in the western part of the forest prevails form with Galanthus nivalis, while in the east – with Tilia cordata. In isolated alluvial forests of urban area local site conditions are crucial for the vegetation patches, because of the distortion of river valleys. The absence of flood embankments is not a sufficient condition for maintaining proper structure of riparian forests.

Ograniczanie wyników

Zmiany we florze rezerwatu przyrody 'Ostrow Panienski' kolo Chelmna w latach 1965-2001

Tempo dekompozycji opadu organicznego podczas przemian siedlisk łęgowych

Przekształcenia roślinności łęgowej w rezerwatach przyrody Polski Środkowej

Różnorodność gleb olsów i łęgów

Występowanie klonu polnego Acer campestre L. na terenie rezerwatów przyrody "Ostrów Panieński" i "Łęgi na Ostrowiu Panieńskim" koło Chełmna

Florystyczne i fitocenotyczne wskaźniki stanu zachowania lasów zalewowych w miejskiej dolinie rzecznej