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1

Palaeoecology of Late Pliocene and Quaternary mammalian communities in the Carpathian Basin

100%
Pazonyi P.
Acta Zoologica Cracoviensia. Ser.A Vertebrata
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2011
|
tom 54A
|
nr 1-2
2

Body mass-population density scaling at the local scale: does the energy equivalence rule hold for forest mammals?

86%
Hoste-Danylow A., Danylow J., Ulrich W.
Polish Journal of Ecology
|
2013
|
tom 61
|
nr 4
The energy equivalence rule assumes that the scaling of population density with body mass is inversely proportional to the scaling of individual metabolic rate. As a result, the total population energy use, calculated as the product of individual metabolic rate and population density, is independent of body mass. Here we evaluated the validity of this rule at the scale of a single community of mammals. Strong linear dependencies were found between log-transformed individual metabolic rate and log-transformed body mass as well as between body mass and density. The slopes of these relationships are close to the predicted |3/4| value and, in accordance with the energy equivalence rule, exhibit opposite values. The results however supported this rule only at the scale of the whole community. When small and large species were considered separately, population energy use increased with body mass. Analyzing these two groups separately strongly decreased the range of body mass considered. Body mass range seems to be a critical factor to find support for the energy equivalence rule at the scale of a single community.
3

The response of small mammal communities to cattle grazing on a coastal meadow

86%
Schmidt N. M., Olsen H.
Polish Journal of Ecology
|
2003
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tom 51
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nr 1
The response of small mammals to cattle grazing on a coastal meadow with three different grazing intensities was evaluated. Grazed areas tended to hold fewer small mammals than the ungrazed control area, though the variation was high. The negative effect of grazing increased with grazing intensity. Small mammals were caught almost exclusively in patches of high, dense vegetation, and it is suggested that the negative effect of grazing results from the reduced number of such patches. Grazing also affected small mammal species richness, where richness was generally lower in the area of high grazing intensity than in areas with low grazing intensity or without grazing.
4

Evolution of small mammal communities from the south of Eastern Europe near the Plio-Pleistocene boundary

72%
Tesakov A. S.
Acta Zoologica Cracoviensia
|
1995
|
tom 38
|
nr 1
5

The influence of trap density and sampling duration on the detection of small mammal species richness

72%
Conard J. M., Baumgardt J. A., Gipson P. S., Althoff D. P.
Acta Theriologica
|
2008
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tom 53
|
nr 2
Assessing species richness of small mammal communities is an important research objective for many live-trapping studies designed to assess or monitor biological diversity. We tested the effectiveness and efficiency of various trap densities for determining estimates and counts of small mammal species richness. Trapping was conducted in grassland habitats in northeastern Kansas during spring and fall of 2002 and 2003. Estimates and counts of species richness were higher at increased trap densities. This effect appeared to be primarily due to the higher number of individuals sampled at higher trap densities. At least 3 nights duration was needed to produce a stable estimate of species richness for the range of trap densities tested (9–144 trap stations/ha). Higher trap densities generally reached stable richness estimates in fewer nights than low density trapping arrangements. Given that counts and estimates of species richness were influenced by trap density and sampling duration, it is critical that these parameters are selected to most effectively meet research objectives.
6

Effects of deforestation on structure and diversity of small mammal communities in the Moravskoslezske Beskydy Mts [Czech Republic]

72%
Bryja J., Heroldova M., Zejda J.
Acta Theriologica
|
2002
|
tom 47
|
nr 3
During 1970s and 1980s, a large area of mountains in the Czech Republic was influenced by long-term industrial air pollution. Among the most degraded areas were the peaks of the Moravskoslezske Beskydy Mts, where vast clearings resulted from emissions and subsequent forest destruction. This study is aimed at determining the degree of deforestation that is necessary to cause changes in structure and species diversity of small mammal communities that were observed previously. Communities of rodents and insectivores were monitored for a minimum of 3 years at two mountain ranges of the Moravskoslezske Beskydy Mts (Czech Republic) by standard mouse snap-traps. The localities (Smrk and Knehyne) differ by the degree of human dis­turbance. Clearings on Smrk Mt are very large (> 30 ha) with no remaining original forest growth as a result of intensive air pollution, unlike the same habitat type at Knehyne Mt, where the clearings are minor (< 3 ha) and contain living solitary trees. Structure and diversity of small mammal communities in clearings were compared with those from original forests and other mountain habitats. Communities of small mammals at clearings in Smrk Mt (with dominating Microtus agrestis) are structurally very different from all other habitats, while structure of communities at Knehyne clearings are very similar to those of original mountain forest (Complete linkage clustering based on Renkonen index). The community of the original mountain spruce forest at Knehyne had the highest species diversity (according to Shannon-Weaver, Brillouin, and Simpson indices, Shannon evenness, and rarefaction), while species diversity at clearings of Smrk was the lowest. Shannon diversity of community at Knehyne primeval forest is similar to that of Knehyne clearings, while at Smrk Mt the forest diversity is higher than that of clearings. The species diversity of mountain forest and clearings at Knehyne Mt was significantly higher than that in the same habitats at Smrk Mt. Our results obtained in disturbed habitats at Knehyne and Smrk Mts suggest that the degree of deforestation may influence the presence and/or the degree of community changes. If the forest destruction is relatively small (clearings < 3 ha), the structure and diversity of small mammal communities do not differ from those of original forest.
7

Ecological effects of heavy metal pollution [ Pb, Cd, Zn ] on small mammal populations and communities

51%
Dmowski K., Kozakiewicz M., Kozakiewicz A.
Bulletin of the Polish Academy of Sciences. Biological Sciences
|
1995
|
tom 43
|
nr 1
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