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1

Ogniu, krocz za mna: Ekologia i polityka pozarow lasow Ameryki Polnocnej

100%
Zwolak R.
Wiadomości Ekologiczne
|
2007
|
tom 53
|
nr 4
191-200
I reviewed the ecological and socio-political issues associated with wildfires in North America. I focused on three management practices: (1) restoration of “healthy” forests in western US, (2) postfire (salvage) logging, and (3) the use of ciearcutting to imitate natural disturbances (so called “emulation silviculture”). It has been argued that fire suppression in forests historically dominated by Ponderosa pine (Pinus ponderosa) has resulted in changes in their structure and species composition, accumulation of fuels, and increased frequency and area of severe fires (Fig. 1). These problems are being addressed by thinning and prescribed burning, but implementing these actions in mid- and high-elevation forests is controversial because these forests have not been impacted by fire suppression. Salvage logging is intended to recoup economic losses, enhance regeneration and reduce fire risk. However, recent research indicates that postfire logging achieves only the first goal, while hindering regeneration and increasing woody fuel loads. Forest harvest is unlikely to substitute wildfires because of differences in size distribution, frequency, and ecological consequences of the anthropogenic and natural disturbances. While the important ecological role of forest fires is being increasingly recognized, fire management is still facing unresolved problems. Moreover, the ongoing climate warming will make it even more challenging.
2

Dlugi i skuteczny poscig w konflikcie dwoch ryjowek aksamitnych Sorex araneus

100%
Zwolak R.
Przegląd Przyrodniczy
|
2006
|
tom 17
|
nr 1-2
137-138
3

Czwarty żywioł

100%
Zwolak R.
Wiedza i Życie
|
2009
|
nr 08
4

Zachowania antagonistyczne ryjowkowatych - problem postaw ciala

100%
Zwolak R.
Wiadomości Ekologiczne
|
2002
|
tom 48
|
nr 1
3-17
5

Does the reduction of locomotor activity serve as an aggression avoidance mechanism in shrews [Soricidae]?

63%
Zwolak R., Rychlik L.
Electronic Journal of Polish Agricultural Universities. Series Biology
|
2004
|
tom 07
|
nr 2
The hypothesis, that shrews avoid intra- and interspecific aggression through a reduction of their loco-motor activity, was tested. In 55 neutral arena tests (each of 30-min-duration), 10 subadult individuals of Sorex minutus, 14 of S. araneus, 9 (including 1 adult male) of Neomys anomalus, and 13 of N. fodiens were used. Loco-motor activity and sum of conflicts (attacks, chases, escapes and threats) in 1st-5th minutes of interactions (phase I) and 10th-15th minutes (phase II) were compared. In all the species, both in intra- and interspecific interactions, a reduction of mobility between phases I and II was observed (in 6 out of 16 comparisons the difference was statistically significant, and in the 7th comparison it was fairly significant). The highest reduction of activity was observed in the smallest S. minutus, and the lowest reduction (no difference was significant) in the largest, dominating N. fodiens.
6

Behavioural mechanisms of conflict avoidance among shrews

63%
Rychlik L., Zwolak R.
Acta Theriologica
|
2005
|
tom 50
|
nr 3
Stable co-existence of similar species should be facilitated by mechanisms impairing, besides exploitative, interference competition. We investigated avoidance of intra- and interspecific conflicts in a four-species community of shrews [Sorex minutus Linnaeus, 1766,S. araneus Linnaeus, 1758,Neomys anomalus Cabrera, 1907, andN. fodiens (Pennant, 1771)], using the method of dyadic encounters in a neutral arena. We tested whether the use of passive (habituation, reduction of mobility, increase of inter-individual distance, and stillness) and active (‘to-and-fro’ and ‘keeping distance’ behaviours) forms of conflict avoidance depends on species, size or domination rank. The duration of conflicts was positively correlated with mobility and negatively with inter-individual distance, whereas it was unrelated to time of stillness and the active forms. The repertoire of conflict avoidance mechanisms was not species-specific and the display of these mechanisms depended rather on the size and domination rank of animals participating in a given interaction. In contrast to rodents, shrews did not avoid conflicts by the most passive forms: freeze and stillness reactions. All other forms were used with a higher or lower efficiency by all species. However, consistent with our predictions, large shrews (asN. fodiens) used mainly the passive mechanisms of conflicts avoidance (‘wait-and-see’ strategy), whereas small shrews (asS. minutus) invest proportionally more time in active forms (‘escape’ strategy).
7
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Do small mammals contribute to the dissemination of zoonotic helminths in human environment? Study of rodents and hedgehogs

51%
Jarosz W., Dziemian-Zwolak S., Zwolak R., Mizgajska-Wiktor H.
Annals of Parasitology
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2016
|
tom 62
|
nr Suppl.
8

Wielki maly terytorialista - rzecz o ryjowkach

50%
Zwolak R.
Wszechświat
|
2002
|
tom 103
|
nr 04-06
130-133
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