Assessment of forest soil contamination in Krakow surroundings in relation to the type of stand     

Ewa Błońska  Jarosław Lasota  Marcin Szuszkiewicz  Adam Łukasik  Anna Klamerus-Iwan 《Environmental Earth Sciences》2016,75(16):1205

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Petrology of parasitic and eccentric cones on the flanks and base of Somma-Vesuvius     

Ray Macdonald  Bogusław Bagiński  Giuseppe Rolandi  Benedetto De Vivo  Anna Kopczyńska 《Mineralogy and Petrology》2016,110(1):65-85

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Long-term air temperature variation in the Karkonosze mountains according to atmospheric circulation     

Krzysztof Migała  Grzegorz Urban  Karol Tomczyński 《Theoretical and Applied Climatology》2016,125(1-2):337-351

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X-ray computed microtomography—a useful tool for petrophysical properties determination     

Jadwiga A. Jarzyna  Paulina I. Krakowska  Edyta Puskarczyk  Kamila Wawrzyniak-Guz  Jakub Bielecki  Konrad Tkocz  Jacek Tarasiuk  Sebastian Wroński  Marek Dohnalik 《Computational Geosciences》2016,20(5):1155-1167

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Meiofauna as descriptor of tourism-induced changes at sandy beaches   总被引：9，自引：0，他引：9  

Gheskiere T  Vincx M  Weslawski JM  Scapini F  Degraer S 《Marine environmental research》2005,60(2):245-265

Tourism has long been considered as a 'clean industry' with almost no negative effects on the environment. This study demonstrated, in two different coastal systems (Mediterranean and Baltic), that tourism related activities are particularly affecting the sandy beach meio- and nematofauna in the upper beach zone, the specific ecotone in which many meiofauna species from both the marine and the terrestrial environment congregate. Tourist upper beaches are characterized by a lower % total organic matter (%TOM), lower densities, lower diversities (absence of Insecta, Harpacticoida, Oligochaeta, terrestrial nematodes and marine Ironidae nematodes) and higher community stress compared to nearby non-tourist locations. The %TOM was found to be the single most important factor for the observed differences in meiofauna assemblage structure at tourist versus non-tourist beaches in both the Mediterranean and the Baltic region. The free-living nematode assemblages from tourist upper zones depart significantly from expectations based on random selections from the regional nematode species pool. Furthermore upper zone assemblages are characterised by a low species diversity consisting of taxonomically closely related nematode species with r-strategist features. Generally, faunal differences between tourist and non-tourist beaches are decreasing towards the lower beach zones.  相似文献   

Depth gradients of benthic standing stock and diversity on the continental margin at a high-latitude ice-free site (off Spitsbergen, 79°N)     

Maria Wlodarska-Kowalczuk  Michael A. Kendall  Jan Marcin Weslawski  Michael Klages  Thomas Soltwedel 《Deep Sea Research Part I: Oceanographic Research Papers》2004,51(12):1903-1914

High-latitude seas are mostly covered by multi-year ice, which impacts processes of primary production and sedimentation of organic matter. Because of the warming effect of West Spitsbergen Current (WSC), the waters off West Spitsbergen have only winter ice cover. That is uncommon for such a high latitude and enables to separate effects of multiyear-ice cover from the latitudinal patterns. Macrofauna was sampled off Kongsfjord (79°N) along the depth gradient from 300 to 3000 m. The density, biomass and diversity at shallow sites situated in a canyon were very variable. Biomass was negatively correlated with depth (R=-0.86, p<0.001), and ranged from 61 g ww m⁻² (212 m) to 1 g ww m⁻² (2025 m). The biomasses were much higher than in the multiyear-ice covered High Arctic at similar depths, while resembling those from temperate and tropical localities. Species richness (expressed by number of species per sample and species–area accumulation curves) decreased with depth. There was no clear depth-related pattern in diversity measures: Hurbert rarefaction, Shannon–Wiener or Pielou. The classic increase of species richness and diversity with depth was not observed. Species richness and diversity of deep-sea macrofauna were much lower in our study than in comparable studies of temperate North Atlantic localities. That is related to geographic isolation of Greenland–Icelandic–Norwegian (GIN) seas from the Atlantic pool of species.  相似文献   

An observational study of a spotted W UMa-type binary star CK Bootis     

J. Krzesiński  M. Mikołajewski  G. Pajdosz  S. Zola 《Astrophysics and Space Science》1991,184(1):37-42

New photoelectric observations of CK Bootis (a binary star suspected of a spot activity) obtained in 1988 at Mt. Suhora Observatory are presented. On the basis of the spectroscopic observations made in May 1990 at the Toru University Observatory the spectral class F6V of the primary component was estimated. The physical parameters of the system with a circular spot were derived making use of the Wilson-Devinney code.  相似文献   

Definition of the large-scale extinction — A new solution of the central void phenomenon     

T. Grabińska 《Astrophysics and Space Science》1989,159(2):347-350

The Estonian School results (Jõeveeret al., 1977) concerning the galaxy cell structure were partly interpreted in the spirit of Zwicky's idea on intergalactic dust, although it remained a speculation. The same view was proposed also by Rudnicki to explain the evident deficit of galaxies in the central region (Central Void) of the Jagellonian field. (Ziba (1974) tried to explain the effect of the central void in terms of an interstellar obscuration.) This explanation of the central void (CV) in terms of a possible intergalactic dust was opened up again inNuovo Cimento, 1984 and 1985; and its merits considered by Rudnickiet al. inComments on Astrophysics, 1989. Now we present a new solution of the problem of the CV mystery.  相似文献   

Certain cosmological models and a new principle of equivalence     

Ewa Rydzyńska 《Astrophysics and Space Science》1989,159(1):11-19

In this paper we prove an equivalence of velocity and Bellert's dilatation of metric. It is the kind of principle such as the equality of gravitational and inertial masses, noted by Newton, or equivalence of acceleration and space curvature, proved by Einstein. Our equivalence can be a foundation of a new theory, as it was in the two mentioned cases.The result is presented in two ways. One of these is a comparison of cosmological theories; and a dependence between the most important cosmological models is obtained. In this paper one of the results from the previous paper of the author (Rydzyska, 1989) is corrected.  相似文献   

Interplay between metamorphic strengthening and structural softening in inclusion‐bearing layered rocks     

Marta Adamuszek  Marcin Dabrowski  Daniel W. Schmid 《地学学报》2013,25(5):381-386

We employ numerical and analytical methods to investigate the effect of the presence of rigid porphyroblasts such as garnets on layer strengthening and the folding instability. We use a 50% fraction of non‐overlapping, circular‐shaped inclusions with a wide size distribution. These inclusions cause a fourfold effective viscosity increase and can significantly promote the folding instability. This is not only due to the increased viscosity but also due to the layer interface roughness generation driven by relative movement of inclusions. The increase in layer viscosity promotes strengthening of the whole system. However, with progressive fold development, the system undergoes an effective softening that may counteract the strengthening effect of the porphyroblast growth.  相似文献