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A concept for biological valuation in the marine environment

100%

Derous S., Agardy T., Hillewaert H., Hostens K., Jamieson G., Lieberknecht L., Mees J., Moulaert I., Olenin S., Paelinckx D., Rabaut M., Rachor E., Roff J., Stienen E. W. M., Van Der Wal J. T., Van Lancker V., Verfaillie E., Vincx M., Weslawski J. M., Degraer S.

Oceanologia

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2007

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tom 49

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nr 1

In order to develop management strategies for sustainable use and conservation in the marine environment, reliable and meaningful, but integrated ecological information is needed. Biological valuation maps that compile and summarize all available biological and ecological information for a study area, and that allocate an overall biological value to subzones, can be used as baseline maps for future spatial planning at sea. This paper provides a concept for marine biological valuation which is based on a literature review of existing valuation criteria and the consensus reached by a discussion group of experts.

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Ecological factors influencing biodiversity preservation in the Shatsk National Natural Park

100%

Tsaryk J., Gorban I., Holovachov O., Shydlovskyy I., Gorban L., Dykyy I., Lesnik V., Matejchyk V., Pudlyk J., Senyk M.

Acta Agrophysica

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2002

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tom 67

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Nodulisporium cecidiogenes - a mycoparasite of Coniophora puteana found in Poland

88%

Piatek M., Karasinski D.

Polish Botanical Journal

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2008

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tom 53

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nr 2

183-186

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Changes of biodiversity and species composition of Molinia meadow depending on use method

88%

Kulik M.

Polish Journal of Environmental Studies

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2014

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tom 23

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nr 3

This paper evaluates the influence of the use of methods of Molinia meadows in eastern Poland on changes in its biodiversity and species composition. Research was carried out in 2006-10 on Molinia meadows near Uściwierz lake, located in the Pojezierze Łęczyńsko-Włodawskie (Lake District). The studied complex was classified to [Selino carvifoliae-Molinietum] meadows. Meadows were used in a specific method: 1. 1-cut meadow (June), 2. 1-cut meadow (June) + grazing (August), 3. abandoned meadow (since 2000). The above-mentioned methods of use caused the transformation of the typical structure of Selino-Molinietum meadow. I observed the initial succession of forest associations with a large share of Salix rosmarinifolia and Betula pubescens on unused meadow. The highest share of the characteristic species of the Selino-Molinietum association was characterized by abandoned meadow.

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Have most species already been, or will they never be discovered? (are optimists or pessimists realists?)

88%

Holynski R. B.

Genus. International Journal of Invertebrate Taxonomy

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2013

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tom 24

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nr 3-4

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A checklist of Entoprocta from India

88%

Chatterjee T.

Acta Biologica

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2021

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tom 28

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Semi-natural grasslands: the effects of cutting frequency on long-term changes of floristic composition

88%

Kramberger B., Kaligaric M.

Polish Journal of Ecology

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2008

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tom 56

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nr 1

The objective of the experiment was to study the effects of different frequencies of cutting on long-term changes in the floristic composition of grassland, with an emphasis on the effects of very late cutting. Cutting at 2, 4, 6, 8 10 and 12-weekly intervals was applied from 1995 to 2006 in a randomized block experiment on semi-natural grassland fertilized with 170 kg N, 40 kg P and 150 kg K ha–1. The floristic composition of treatments was determined in May 1995, 1999, 2002 and 2006. In the final year (2006) the proportion of grasses in the dry matter of harvest was highest (77%) in the treatment with the least frequent cuts, and it was the highest obtained during the whole experiment. Under very frequent cuts, the proportion of grasses ranged only from 45 to 57%. Among legumes, only Trifolium repens L. was represented in high proportions in the dry matter of the harvest (from 19 to 25%) in 2006, but only in the treatments involving high cutting frequencies. The proportion of non-legume forbs in treatments involving low cutting frequency did not exceed other treatments; moreover, their proportion in the dry matter of the harvest in the treatment with the lowest cutting frequency decreased significantly to the lowest value (19%). The increased proportion of grasses in treatments with low cutting frequency indicates that a very late cut does not necessarily mean that forbs increase in the floristic composition, but can help grasses to retain their dominant and stable proportion in the semi-natural sward. Consequently, when farmers are being provided with financial incentives with the aim of protecting diversity and the natural environment, it is worth recommending also a very late cutting, which includes natural reseeding to a greater extent. This can help to find a compromise between farmers’ expectations of stable yield and quality forage, and the public interest in having grasslands of high biodiversity.

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Notes on the effects of human induced stressors in parts of the Niger Delta, Nigeria

88%

Nwankwo D. I.

Polish Ecological Studies

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1996

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tom 22

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nr 1-2

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Biodiversity of arthropod pathogens in the Bialowieza Forest

88%

Sosnowska D., Balazy S., Prishchepa L., Mikulskaya N.

Journal of Plant Protection Research

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2004

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tom 44

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nr 4

In the years 2002–2004 strains of Bacillus thuringiensis and 37 species of entomopathogenic fungi were isolated and identified in the Polish and Belarussian parts of Białowieża Forest (BF). Mitosporic fungi and bacteria dominated in litter superficial soil layer, forest, litter and floor vegetation whereas entomophtoralen fungi prevailed in bushy undergrowth layers and tree crowns. The dominant species Beauveria bassiana was observed in forest floor, subcortical habitats on dead trees, meadows and rushes. The species Entomophthora israelensis, Beauveria cf. bassiana, Paecilomyces suffultus and P. tenuipes were for the first time described as insect pathogens in BF. Entomophthorales seem to hold much greater part than mitosporic forms in the whole diversity of entomopathogenic fungi. Relatively rich sets of these fungi recognised in BF during last decades confirm the predestination of this area as highly significant refuge for other groups of arthropod pathogens, and it should encourage scientists to widen their research and contribute to a rather scarce knowledge in this field.

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Riparian zones: where biogeochemistry meets biodiversity in management practice

88%

Decamps H., Pinay G., Naiman R. J., Petts G. E., McClain M. E., Hillbricht-Ilkowska A., Hanley T. A., Holmes R. M., Quinn J., Gibert J., Planty Tabacchi A. M., Schiemer F., Tabacchi E., Zalewski M.

Polish Journal of Ecology

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2004

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tom 52

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nr 1

Riparian zones are well known for their inherent ecological properties related to biogeochemical cycles, biodiversity, and catchment management. The international MAB/UNESCO programme which was running between 1988 and 1998 was related to the land/water ecotones, mainly riparian zones. This article, inspired by this programme – seeks to highlight the role of riparian processes on biogeochemical cycles and biodiversity under different climatic conditions. Their role is investigated by focusing on: i) the lateral ecotone between land and water systems, ii) their longitudinal corridor structure and, iii) the drywet cycles. This information is then used to suggest the value of riparian zones in landscape management. We emphasize the key roles of the ecotonal structure, longitudinal connectivity and timing of the occurrence of wet-dry cycles for riparian zones to process nitrate fluxes and to maintain high levels of biodiversity at the landscape scale. In the context of the worldwide transformations of flow regimes, the deterioration of water quality and loss of biodiversity, restoring riparian zones is both a key objective and a formidable challenge that implies envisioning the consequences of management actions on the long term, considering entire river basins, and paying attention to other environmental, regional and global changes.

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Application of the bait-lamina method to measure the feeding activity of soil fauna in temperate forests

76%

Klimek B., Niklinska M., Jazwa M., Chodak M., Tarasek A.

Polish Journal of Ecology

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2015

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tom 63

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nr 3

The aim of the study was to compare the feeding activity of soil fauna in seven temperate forests with the application of the bait-lamina method. Seven types of temperate forests located throughout Poland (East-Central Europe) were tested, ranging from dry pine forest with a typical poor quality soil to eutrophic riparian fresh deciduous forest. Each forest type was represented by five stands and all stands altogether represented natural gradient of soil fertility, texture and vegetation diversity. Despite clear diversification between the studied forest types according to a range of soil physicochemical properties and vegetation characteristics in addition to applying recommended measurement conditions for the method, we determined that the feeding activity of soil fauna did not differ between forest types. The activity of soil fauna did not depend on site botanical characteristics or any soil physical or chemical features, indicating that the bait lamina method was useless in measuring the feeding activity of soil fauna in temperate forest soils. Differences in the feeding activity of soil fauna might result from other environmental factors that influence soil fauna feeding activity in forest stands that were not measured here, i.e., soil temperature and humidity. The differences could also be attributable to the attractiveness of the bait substrate to soil fauna, which may be different in various soil conditions.

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Evidence supporting the concept of a regionalized distribution of testate amoebae in the Arctic

76%

Beyens L., Bobrov A.

Acta Protozoologica

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2016

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tom 55

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nr 4

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Invasive plant species - threat to grasslands in river valleys

76%

Szymura M., Dradrach A., Wolski K., Swierszcz S.

Steciana

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2014

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tom 18

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nr 2

River valleys are areas of transition between aquatic and terrestrial communities, with complex biological structure. As ecotones they have high biodiversity as a result of the occurrence of species with different requirements according to soil moisture. They create ecological corridors, allowing migration of the organisms in human disturbed landscape. With these migration routes, species of foreign origin which spread to a new area also benefit. Numerous alien species are considered as invasive, and described as a threat to biodiversity due to strong competitive abilities. To describe the relationships between a number of invasive species, biodiversity and size of a river, the vegetation of 750 m fragments of the Odra and Dobra river valleys on the area of the Wrocław city were analysed. The comparison of plant communities in the valley of a large, managed river (Odra) and its small tributary (Dobra) was carried out. The plant assemblages, occurring in study areas, determined the habitat conditions on the basis of Ellenberg’s indicator values (EIV’s), as well as Shannon-Wiener biodiversity index was defined. The designed sites differed according to Shannon-Wiener biodiversity index, as well as soil properties: moisture, reaction, and fertility. In the study side of the Odra river ruderal and scrub species were dominated, whereas in case of study site of the Dobra river – meadows and ruderal species. The invasive plant species occurring in the Odra valley are: Symphoricarpos albus, Solidago gigantea, S. canadensis, Robinia pseudoacacia, Clematis vitalba, Quercus rubra, Reynoutria japonica, Parthenocissus inserta and Echinocystis lobata, and in the Dobra valley: Solidago gigantea, S. canadensis. The analysis of correlation between Shannon-Wiener biodiversity index and share of invasive species revealed statistically significant influence of occurrence of invasive species on biodiversity of plant communities in case of the Odra river.

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Assessment of genetic diversity of Tilia rubra DC. by RAPD analysis in the Hyrcanian forests, North of Iran

76%

Hosseinzadeh Colagar A., Yusefi M., Zarei M., Yousefzadeh H.

Polish Journal of Ecology

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2013

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tom 61

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nr 2

Genetic variability and differentiation of six populations of Tilia rubra from Hyrcanian forests of the north of Iran were analyzed using random amplified polymorphic DNA (RAPD) markers. Seven primers pairs used to study six populations, in six localities located in at different altitude (250–2500 m a.s.l) but within the distance 50 km, provided 70 reliable bands, of which 29 (41.4%) were polymorphic. The average population diversity using the Shannon’s index (I) was 0.22 and ranged from 0.22 for Bandbon population to 0.08 for the Salahedinkola population. The mean heterozygosity varied from 0.013 to 0.06 within the populations of T. rubra. The AMOVA analysis showed a significant genetic differentiation within populations and 97% of the total variation occurred within populations and only 3% occurred among populations. Cluster analysis using the UPGMA method grouped all individuals into four clusters. The results did not correspond with the populations origin. The low inter-population differentiation and the lack of significant correlation between geographic and genetic distances suggest intensive gene flow among populations of Tilia rubra.

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A geomorphological approach to geodiversity - its applications to geoconservation and geotourism

76%

Thomas M. F.

Quaestiones Geographicae

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2012

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tom 31

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nr 1

16

Long-term changes of the fish community in a small hypertrophic lake

76%

Rechulicz J.

Polish Journal of Environmental Studies

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2014

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tom 23

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nr 3

A study of fish fauna in a small hypertrophic lake was conducted in the spring, summer, and autumn of 2006-10. In total 11 fish species representing 4 families were found. The species richness was low, depending on the season, and ranged from 2 to 7 species. A variation of species dominance, depending on the year and season, was found. Total fish abundance and biomass were varied according to the season, but differences depending on the year had been noted only in fish biomass. The fish fauna was characterized by low values in indices of diversity and the estimated turnover rate of the fauna ranged from 0.09 to 0.56, and the regression analysis showed a significant growth in its upward trend.

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The state of plant conservation in small water bodies located within the city limits of Olsztyn

76%

Grzybowski M., Endler Z.

Oceanological and Hydrobiological Studies

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2008

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tom 37

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nr 4

73-83

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Biodiversity of segetal flora in potato fields (Solanum tuberosum L.) in selected municipalities of the Zamosc region

76%

Klikocka H.

Polish Journal of Natural Sciences

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2017

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tom 32

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nr 1

The research was conducted on weed infestation of potato crops in fields with different soils in several (9) municipalities in the Zamość region in 2014–2015 were compared with the results of research carried out in 1991–1995. The phytosociological photos were created by Braun-Blanquet’s method, of which 87 representative images were selected for analysis. The photos were taken on three complexes of agricultural suitability of soils: good wheat, defective wheat and good rye. Generally identified 55 species of weeds (43 annual and biennial and 12 perenial). The cultivation of potato less were infested on the complex good wheat and defective than good rye. One photo in the first research period (1991–1995) accounted from 45 to 52 species, while in the second period (2014–2015) from 41 to 49 species. In potato canopy dominated nitrophilous species: Chenopodium album, Echinochloa crus-galli, Matricaria maritima subsp. inodora, Stellaria media, Galinsoga parviflora, Elymus repens and Equisetum arvense. In general, irrespective of the soil complex, the resumption of testing after 20 years in selected locations in various municipalities of the Zamość region indicates is very limited of certain taxa, such as Galeopsis tetrahit, Veronica persica, Papaver rhoeas, Avena fatua, Sinapis arvensis, Spergula arvensis, Fallopia convolvulus and Polygonum persicaria, in addition to Galium aparine and Stellaria media on poorer soil complexes. An increase in infestation of potato was noted for Chenopodium album, Echinochloa crus-galli, Setaria pumila, Anthemis arvensis, Atriplex patula and Lamium purpreum. Among perennial taxa, crops are infested in the highest degree by Elymus repens and Equisetum arvense.

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Diatomological aspects of the Fenn’s and Whixall Mosses complex (Shropshire, UK)

76%

Szulc K., Besenyei L., Szulc B., Rakowska B.

Oceanological and Hydrobiological Studies

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2014

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tom 43

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nr 3

20

Grassland ecosystems in the varied hydrological and ecological conditions of the Kulawa River Valley

76%

Prajs B., Antkowiak W.

Polish Journal of Environmental Studies

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2010

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tom 19

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nr 1

131-139

Grasslands in the Kulawa river valley (ca. 10 ha) were subject to land improvement in the 19th century, and remnants of the hydrotechnical system and overgrown ditches are still present. This study aims to: (1) evaluate the present meadow ecosystems; (2) predict their changes under the influence of the planned restoration of the hydrotechnical system and (3) compare results of various methods: phytoindication, phytosociological, floristic, and principal component analysis. The applied methods complemented one another. The devastation of the hydrotechnical system and the lack of utilization of the grasslands have led to either drying or waterlogging of the soil, and to changes in vegetation. The plant communities that have developed there represent the intermediate stage of regressive succession, and belong to the orders Arrhenatheretalia, Molinietalia, and the class Phragmitetea. Particularly the patches growing on relatively dry, strongly decomposed peaty soil have lost the characteristics of damp meadows. Meadow species have declined there, and nitrophilous species have replaced them. Only a local depression without outflow, which was earlier drained, is now waterlogged again, with a mosaic of calcareous fen, meadow, and marsh vegetation, including large populations of 11 species that are rare, protected, or listed as indicator species for the Natura 2000 habitat 7210*. Results of this study indicate that the present conditions in the waterlogged depression should be preserved. In contrast, the dry patches should be irrigated and subject to extensive farming.

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