Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: alluvial habitat

Sortuj według:

Ogranicz wyniki do:

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Changes in elm (Ulmus) populations of mid-western Poland during the past 35 years

100%

Napierala-Filipiak A., Filipiak M., Lakomy P., Kuzminski R., Gubanski J.

Dendrobiology

2016

tom 76

Three elm species are native to Poland: wych elm (Scots elm) (Ulmus glabra Huds.), field elm (U. minor Mill.), and European white elm (fluttering elm) (U. laevis Pall.). The epidemic of Dutch elm disease (DED) has led to a decrease in the popularity of elm cultivation. An analysis of forestry data was the first step in the assessment of elm resources. The area of forest stands where elms are dominant has more than doubled since 1978. Lowland alluvial forests rank first in regards to the number of elm localities per unit area of a given forest site type. While this site type is clearly preferred by elms, the majority of elm trees are actually scattered among sites of oak-hornbeam or closely related forests (of the alliance Carpinion betuli). Field research revealed a clear dominance of U. laevis, a species which in the past was predominantly located out of woodland and rarely cultivated. Data analysis indicated that all trees greater than 70 cm in diameter belonged to this species. Data from plots surveyed directly also suggest that the three elm species have slightly different habitat preferences. U. laevis prefers riparian habitats, although the major part of its resources is now on potential sites of oak-hornbeam or closely related forests. U. minor even more often than U. laevis occurs at less humid sites (mostly potential sites of oak-hornbeam or closely related forests), while U. glabra prefers moist slopes. In general, it appears that the impact of DED in the last 20–30 years has been smaller than in the preceding period, however, the disappearance of the disease has not been established. Undoubtedly, U. laevis is the elm species that is least impacted by DED

Alluvial meadows of Cnidion dubii Bal.-Tul. 1966 in the middle Oder River valley (Natura 2000 site “Legi Odrzanskie”, SW Poland)

100%

Kazun A.

Steciana

2014

tom 18

nr 2

The paper contains a phytosociological description and evaluation of alluvial meadows of Cnidion dubii Bal.-Tul. 1966 at the Natura 2000 site “Łęgi Odrzańskie”, the middle Oder river valley, presented in relation to local water conditions and grassland management. Phytosociological data of the C. dubii alliance from Poland and the Czech Republic have also been presented.

The influence of temperature, precipitation and floods on the development of horse fly populations (Tabanidae) in the alluvial habitats of the Danube River in Croatia

80%

Mikuska A., Krcmar S., Radovic A., Mikuska T.

Polish Journal of Ecology

2012

tom 60

nr 2

The paper describes impacts of the main ecological factors on the development of horse fly populations in the alluvial floodplains of the Danube River in the Pannonian plain. The study has been conducted from 2004–2009 in the four, water dependent, succession stages of alluvial forest communities of Kopacki rit wetlands. In total more than 23 000 adult horse flies of 22 species were collected by canopy traps that were placed annually during the flight season from May–September. The most abundant species during the study period were: Tabanus bromius with 47%, T. sudeticus with 17% and Haematopota pluvialis with 11%, respectively. Correlation analysis has confirmed the influence of the deviations from long-term average values in the temperature, precipitation and flood duration on the numbers of adult horse flies during the following year. A significant positive correlation has been found between spring and autumn precipitation and rainy seasons yielded more horse fly individuals the following year. A significant negative correlation has been found between the higher temperatures during summer, autumn and spring and the number of adults in the following year. The impact of the seasonal divergence from long-term average values in temperature, precipitation and flood on different species was not straightforward and different species have shown diverse correlation responses, either positive or negative.

Ograniczanie wyników

1 Dendrobiology

1 Polish Journal of Ecology

1 Steciana

1 Filipiak M.

1 Gubanski J.

1 Kazun A.

1 Krcmar S.

1 Kuzminski R.

1 Lakomy P.

1 Mikuska A.

1 Mikuska T.

1 Napierala-Filipiak A.

1 Radovic A.

1 2016

1 2014

1 2012

Wyniki wyszukiwania

Changes in elm (Ulmus) populations of mid-western Poland during the past 35 years

Alluvial meadows of Cnidion dubii Bal.-Tul. 1966 in the middle Oder River valley (Natura 2000 site “Legi Odrzanskie”, SW Poland)

The influence of temperature, precipitation and floods on the development of horse fly populations (Tabanidae) in the alluvial habitats of the Danube River in Croatia