scholarly journals Tectonics of the Wysoka Kamieńska Graben (NW Poland) and implications for fault sealing potential

2021 ◽  
Vol 65 (3) ◽  
Author(s):  
Kinga BOBEK ◽  
Monika KONIECZYŃSKA ◽  
Marek JAROSIŃSKI
Keyword(s):  
Nw Poland

scholarly journals Tree-Ring Analysis of Intermediate Hawthorn (Crataegus media Bechst.) in NW Poland

Forests ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 29
Author(s):  
Anna Cedro ◽  
Bernard Cedro
Keyword(s):  
Tree Ring ◽  
Tree Rings ◽  
Agricultural Landscape ◽  
Positive Influence ◽  
Dominant Factor ◽  
Incremental Growth ◽  
High Precipitation ◽  
Ring Analysis ◽  
Uncultivated Land ◽  
Nw Poland

Intermediate hawthorn (Crataegus × media Bechst.) is broadly distributed in Europe but very rarely examined by dendrochronologists. In NW Poland, it is one of three naturally occurring hawthorn species, growing mainly at forest margins, along roads, in mid-field woodlots, and on uncultivated land. Biocenotically, it is a very valuable species. This study aimed to determine the age of trees, tree-ring dynamics, and growth–climate relationship for intermediate hawthorn. Signature years were also determined. Samples for analysis were collected from 22 trees growing in a typical agricultural landscape in a monospecific mid-field woodlot comprised of several hundred specimens of various ages and forms (shrubs and trees). Using classic methods of dendrochronological dating, a 40-year long chronology spanning 1981–2020 was constructed. The radial growth rate of intermediate hawthorn is comparable to other tree species forming stands in NW Poland and equals 2.41 mm/year. Considerable intersubject variability is noted, from 1.48 to 4.44 mm/year. The chronology was also used for dendroclimatological analyses, including correlation and response function and signature years. Of the meteorological parameters analyzed, annual incremental growth in hawthorn is the most strongly shaped by precipitation totals from May to August of the current vegetation year: high rainfall favors the formation of wide tree-rings. Statistically significant growth–climate relationships were also obtained for winter months (December of the preceding vegetation year, January and February), for which period negative correlation and regression values are noted for air temperature and insolation. Furthermore, high precipitation, low-temperature and low insolation late in the preceding vegetation year (especially in August) make a positive influence on the condition of trees in the upcoming growing season. Signature year analysis clearly pointed to precipitation as the dominant factor in shaping tree-rings in the studied hawthorn population. As there are no dendrochronological papers concerning indigenous hawthorn species, future studies should be expanded to include diverse geographic locations and habitat conditions and should include all three species of hawthorn occurring in Poland.

scholarly journals ABSOLUTE DENDROCHRONOLOGICAL SCALE FOR PINE (PINUS SYLVESTRIS L.) FROM UJŚCIE (NW POLAND), DATED USING RAPID ATMOSPHERIC 14C CHANGES

Radiocarbon ◽  
2020 ◽  
pp. 1-10
Author(s):  
Marek Krąpiec ◽  
Andrzej Rakowski ◽  
Jacek Pawlyta ◽  
Damian Wiktorowski ◽  
Monika Bolka
Keyword(s):  
High Resolution ◽  
Pinus Sylvestris ◽  
Middle Ages ◽  
Tree Ring ◽  
Tree Rings ◽  
Matching Method ◽  
Early Middle Ages ◽  
Rapid Changes ◽  
Absolute Age ◽  
Nw Poland

ABSTRACT Radiocarbon (14C) analyses are commonly used to determine the absolute age of floating tree-ring chronologies. At best, with the wiggle-matching method, a precision of 10 years could be achieved. For the early Middle Ages, this situation has been markedly improved by the discovery of rapid changes in atmospheric 14C concentrations in tree-rings dated to 774/775 and 993/994 AD. These high-resolution changes can be used to secure other floating tree-ring sequences to within 1-year accuracy. While a number of studies have used the 774 even to secure floating tree-ring sequences, the less abrupt 993 event has not been so well utilized. This study dates a floating pine chronology from Ujście in Wielkopolska (Greater Poland) (NW Poland), which covers the 10th century period and is critical for studies on the beginning of the Polish State to the calendar years 859–1085 AD using the changes in single year radiocarbon around 993/4 AD.

scholarly journals Occurrence of Senecio erucifolius L. (Asteraceae) in the Western Pomerania (NW Poland)

Steciana ◽  
2016 ◽  
Vol 20 (1) ◽  
pp. 3-6
Author(s):  
Marek Podsiedlik ◽  
Leszek Bednorz
Keyword(s):  
Nw Poland

scholarly journals GRZYBY MAKROSKOPIJNE REZERWATU PRZYRODY „TORFOWISKO TOPORZYK” (NW POLSKA)

1970 ◽  
Vol 65 ◽  
pp. 95-109
Author(s):  
Małgorzata Stasińska ◽  
Zofia Sotek
Keyword(s):  
Nature Reserve ◽  
Fungal Species ◽  
Red List ◽  
Mycological Research ◽  
Plant Associations ◽  
Nw Poland

The paper presents results of mycological research carried out in the “Torfowisko Toporzyk” nature reserve (NW Poland), in the years 2004–2009. As a result of the studies, 216 fungal species were identified, 17 Ascomycota and 199 Basidiomycota. Twenty of the recorded species are included on the Polish red list of macrofungi, e.g. Cortinarius violaceus, Lactarius lacunarum, Mycena megaspora and Suillus flavidus. Among the plant associations, Vaccinio uliginosi-Pinetum (87 species) and Vaccinio uliginosi-Betuletum pubescentis (77), turned out to be the richest in fungi, whereas the fewest taxa were found in Rhynchosporetum albae (8).

scholarly journals Protarchanara brevilinea FENN, 1864 – a moth species new to Poland (Lepidoptera: Noctuidae)

2015 ◽  
Vol 84 (1) ◽  
pp. 3-7
Author(s):  
Janusz Nowacki ◽  
Roman Wąsala
Keyword(s):  
First Record ◽  
Moth Species ◽  
Lepidoptera Noctuidae ◽  
Nw Poland

Abstract This is the first record of Protarchanara brevilinea (Lepidoptera, Noctuidae) from Poland. It was found in Western Pomerania, NW Poland.

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