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Survival of radiocollared adult leopard cats Prionailurus bengalensis in Thailand

100%

Haines A. M. , Grassman L. I. , Tewes M. E.

Acta Theriologica

2004

tom 49

nr 3

From December 1999 to December 2002, we radiocollared 25 adult (17 M, 8 F) leopard catsPrionailurus bengalensis Kerr, 1792 in Phu Khieo Wildlife Sanctuary, Thailand. We found no difference in annual survival rate between adult males (0.96 ±0.05) and females (0.87 ± 0.13), and we found no difference in mean seasonal survival rates between the dry (0.95 ± 0.04) and wet season (0.97 ± 0.04). We estimated a pooled mean annual survival of 0.92 ± 0.06 for adult leopard cats, and also estimated annual survival rates of 0.83 ± 0.24 and 0.53 ± 0.21 for leopard cats in 2 other studies. We believe our high mean annual survival estimate of adult leopard cats was related to our study site being located within a remote wildlife sanctuary with minimal anthropogenic effects.

Species richness and diversity related to anthropogenic soil disturbance in abandoned meadows in the Bieszczady Mts. [Eastern Carpathians]

72%

Korzeniak J.

nr 1

The study was focused on soil factors influencing species richness and diversity after disturbance of the substrate followed by abandonment. Two types of disturbances in the past were considered: the removal of trees and shrubs with the resulting major destruction of soils, and deep ploughing. As a control meadows not covered by any management schemes for 50 years were studied. The topsoil stripping resulted in decrease of potassium, nitrogen and organic carbon contents, while deep ploughing caused less radical effects. Simultaneously, disturbances of the soil delayed the course of succession, and brought increase in species. The most species-rich are ploughed meadows. No differences in terms of species diversity, domination and evenness between the forms of disturbances were identified. However, there were groups of species indicative for soil disturbances. Analysis of the relationships between vegetation differentiation and the properties of soil suggests that available phosphorus may affect species richness and diversity in mountain meadows.

The combined approach to solving issues of the flood hazard assessment using water gauge records and spatial data

58%

Korbutiak V. , Stefanyshyn D. , Lahodniuk O. , Lahodniuk A.

Acta Scientiarum Polonorum. Architectura

2020

tom 19

nr 1

A pilot study on anthropogenic faecal pollution impact in Bahir Dar Gulf of Lake Tana, Northern Ethiopia

58%

Goshu G. , Byamukama D. , Manafi M. , Kirschner A. K. T. , Farnleitner A. H.

International Journal of Ecohydrology and Hydrobiology

2010

tom 10

nr 2-4

The anthropogenic effect on faecal and chemical pollution at Bahir Dar Gulf of Lake Tana, Ethiopia was investigated in the period of October 2006 to February 2007. Faecal and physicochemical pollution levels were significantly increased and clearly discernible in the Bahir Dar Gulf locations as compared to presumptively anthropogenic uninfluenced reference locations near the outlet of the Blue Nile River of Lake Tana. One directly sewage influenced lake site at Bahir Dar Gulf was found to be excessively faecally polluted. The total pooled data set from the study for faecal coliforms, Escherichia coli and Clostridium perfringens spores ranged from not detectable (n.d.) to log 6.2 CFU, n.d. to log 6.1 CFU and n.d. to log 1.7 CFU per 100 ml, respectively. A high variation was also observable for the physicochemical parameters including the spectral absorption coefficient at 254 nm, ammonia, nitrite, nitrate, total dissolved solids, total suspended solids and pH values. Although the data have to be considered preliminary, it strongly points to the need for systematic water quality monitoring of Lake Tana and its potential impact sources. This is all the more important as the lake is the largest freshwater body in the country serving a multipurpose role and being identified as a growth corridor of the country.