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Topographic attributes and ecological indicator values in assessing the ground-floor vegetation patterns

Alpine area. Ecol. Model. 113: 225-237. http://dx.doi.org/10.1016/S0304-3800(98)00145-8 T er B raak C. J. F. & Š milauer P. 2002. CANOCO reference manual and CanoDraw for Windows. User’s guide: software for canonical community ordination (version 4.5). 491 pp. Microcomputer Power, Ithaca. U rbański J. 2012. GIS w badaniach przyrodniczych. Available: http://ocean.ug.edu.pl/~oceju/centrumGIS/dane/GIS_w_badaniach_przyrodniczych_12_2.pdf [01.06.2017]. van D obben H. F., ter B raak C. J. F. & D irkse G. M. 1999. Undergrowth as a biomonitor for

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Numerical taxonomic study of the genus Crotalaria L. (Crotalarieae, Fabaceae) in Nigeria

Abstract

Numerical taxonomic study of the genus Crotalaria L. in Nigeria was conducted to identify and differentiate some of the species of the genus Crotalaria using numerical taxonomy based on quantitative and qualitative characters. Field work was conducted, where different species were collected and analyzed using multivariate analysis. The results showed that all the collected species are distinct at Euclidian distance of 0.41 in the cluster analysis with Cophenetic correlation (r)=0.964. The ordination analysis based on the results of the PCA, separated the specimens into 7 groups corresponding to the result of cluster analysis. The first two components of the PCA account for 81.5%. The length of petiole, width of leaflet and length of fruit contributed more to showing delimitation among the species.

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The Importance of Field-Margin Location for Maintenance of Food Niches for Pollinators

. Statistica v. 10 (2011) StatSoft Inc. Stawiarz E. (2009) Pollen of non-nectariferous plants in the microscopic image of honeys of some communes of the Świętokrzyskie Voivodeship. Acta Agrobotanica 62(2):53-58. Steffan-Dewenter I., Potts S. G., Packer L. (2005). Pollinator diversity and crop pollination services are at risk. Trends in Ecology and Evolution 20: 651-652. ter Braak C. J. F., Šmilauer P. (2012) Canoco reference manual and user’s guide: software for ordination, version 5.0. Microcomputer Power. Ithaca, USA. 496 pp

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The saker falcon (Falco cherrug) population, diet and nest boxes in Slovakia: LIFE-project report 2011–2014

of landscape composition on avian community structure and associated mechanims. Ecology 82: 3493-3504. Ter Braak CJF & Šmilauer P 2002: CANOCO Reference manual and CanoDraw for Windows. User’s guide. Software for canonical community ordination, ver. 4.5. Microcomputer Power, Ithaca, NY, 500. Trnka A 2002: Jarabica polná (Perdix perdix) [The Grey Partridge (Perdix perdix)], 225-227. In: Danko Š, Darolová A & Krištín A (eds): Rozšírenie vtákov na Slovensku [Birds distribution in Slovakia]. Veda, Bratislava, 688. [In Slovak with English

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Acidophilous oak forests of the Wielkopolska region (West Poland) against the background of Central Europe

. Przemiany zbiorowisk leśnych Puszczy Kozienickiej od czasów Ryszarda Zaręby. In: J.M. Matuszkiewicz (ed.). Geobotaniczne rozpoznanie tendencji rozwojowych zbiorowisk leśnych w wybranych regionach Polski. IGiPZ PAN Monografie 8:504-553. Warszawa. Otýpková Z. 2009. The influence of sample plot size on evaluations with Ellenberg indicator values. Biologia 64: 1123-1128. Otýpková Z. & Chytrý M. 2006. Effects of plot size on the ordination of vegetation samples. J. Veg. Sci. 17: 465-472. Paal J. 1998

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Plant community analysis and effect of environmental factors on the diversity of woody species in the moist Afromontane forest of Wondo Genet, South Central Ethiopia

Abstract

Floristic diversity and the composition of vascular plants are described for the moist Afromontane forest (MAF) of Wondo Genet, south-central Ethiopia. A total of 75 (20 x 20 m) quadrats were sampled and data on species identity, abundance, elevation, slope and aspect were recorded. Different diversity indices and ordination techniques were used to analyze the data. A total of 240 plant species including seven endemic plant species were found representing 94 families and 210 genera, of which trees constitute 23.8%, shrubs 25%, herbs 35%, lianas 11.3% and ferns 5%. Cluster and indicator species analyses revealed five plant communities described as: Teclea nobilis-Calpurnia aurea, Erythrococca trichogyne-Millettia ferruginea, Croton macrostachyus-Vernonia hochstetteri, Protea gaguedi-Rhus retinorrhoea and Dodonaea angustifolia-Hypericum quartinianum. Elevation (R2=0.48, P<0.001), slope (R2=0.14, P<0.001) and aspect (R2=0.04, P<0.01) correlated significantly and negatively with species richness, whereas only elevation (R2=0.30, P<0.001) and slope (R2=0.13, P<0.001) related significantly and negatively with abundance. Sørensen’s similarity coefficient indicates that the forest of Wondo Genet is similar to moist montane forests of southwestern and southeastern Ethiopia. Given the high diversity, coupled with the existence of endemic species, ecosystem conservation and restoration strategies with further research are warranted.

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Transformation of Forest Vegetation After 40 Years of Protection in the Tomczyce Nature Reserve (Central Poland)

krzewy na ziemiach polskich. In: M. Ławrynowicz, A. U. Warcholińska (eds), Rośliny pochodzenia amerykańskiego zadomowione w Polsce. Szlakami Nauki 19. Łódzkie Towarzystwo Naukowe, Łódź, pp. 97-150. Hill, M. O., Gauch, H. G. 1980. Detrended correspondence analysis, an improved ordination technique. Vegetatio 42: 47-58. Holeksa, J. 2005. Advantages and disadvantages of the strong position of phytosociology for nature conservation in Poland. Ecol. Questions 6: 19-27. Holeksa, J., Szwagrzyk, J

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Ecological Spectra of the Most Abundant Lumbricid (Oligochaeta, Lumbricidae) Species of the Central Ukrainian (Polissia)

]. Vsevolodova-Perel, T. S. 1988. Th e spread of worms in the north of the Palearctic (in the USSR). Biology Nordic soil. Nauka, Moscow, 84-103 [In Russian]. Westhoff , V., van der Maarel, E. 1973. Th e Braun-Blanquet approach. In: Whittaker, R. H., ed. Handbook of vegetation science. Part 5. Classification and ordination of communities. Junk, Th e Hague, 619-726.

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Preliminary Study on Effect of Agricultural Activities in Pollen Spectrum of Argentinean Honey

., & Šmilauer, P. (2012). CANOCO reference manual and user’s guide: Software for ordination (version 5.0). New York: Biometris. Wageningen University and Research Centre Brogna, D., Michez, A., Jacobs, S., Dufrêne, M., Vincke, C., Dendoncker, N. (2017). Linking forest cover to water quality: a multivariate analysis of large monitoring datasets. Water, 9 (3), 176-193. http://doi.org/10.339 Cabrera, A.L (1968). Flora de la Provincia de Buenos Aires. Parte I. Buenos Aires: Colección Científica del INTA. Caccavari, M., & Fagúndez, G. (2010). Pollen spectra

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Participation of various habitat groups in the flora of spring niches in the Ojców National Park (Southern Poland)

nature reserves in Wielkopolska. 4. “Dolina Kamionki”. Roczn. Akad. Roln. w Poznaniu 386, Botanika - Steciana 11: 73-76. Grolle R. & Long D.G. 2000. Hepatics of Europe includingthe Azores: an annotated list of species, with synonyms from the recent literature. J. Bryol. 12: 403-459. Herbich J. 1981. Glycerietum nemoralis-plicatae Kopecký 1972 - a new plant association in Poland. Fragm. Flor. Geobot. 27(1-2): 165-170. Hill M. & Gauch H. G. 1980. Detrended Correspondence Analysis: an improved ordination technique. Vegetatio

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