Natural and anthropogenic factors influenced Czarna Nida river valley during the Late Glacial and Holocene

2013 ◽  
Vol 81 (1) ◽  
Author(s):  
Joanna Krupa
Keyword(s):  
Late Glacial ◽  
River Valley ◽  
Anthropogenic Factors ◽  
Late Glacial And Holocene ◽  
Natural And Anthropogenic Factors

scholarly journals Influence of natural and anthropogenic factors on the distribution of xerothermic plants in the lower San river valley (SE Poland)

2012 ◽  
Vol 65 (1) ◽  
pp. 107-114 ◽  
Author(s):  
Rafał Krawczyk
Keyword(s):  
Land Use ◽  
Vascular Plants ◽  
River Regulation ◽  
River Valley ◽  
Anthropogenic Factors ◽  
Se Poland ◽  
Steep Slopes ◽  
The Relationship ◽  
Natural And Anthropogenic Factors ◽  
Aeolian Sands

The aim of the present study was to describe the distribution of xerothermic species of vascular plants in the lower San River valley and the relationship between their density and the intensity of selected environmental (natural and anthropogenic) factors. Xerothermic species occurred more frequently in the present valley floor compared to the glacial terrace. Within the present valley, the highest density was observed in the floodplain. The examined species also occurred more often on steep slopes of the valley, at the margins of the present valley terraces, and in the area of occurrence of aeolian sands. Moreover, a positive correlation has been found between the number of xerothermic species and the area of polyhemeroby ecosystems. The distribution of xero- and thermophilous species is determined by natural edaphic and geomorphological factors as well as anthropogenic ones (land use, lowering of the groundwater level as a result of river regulation).

scholarly journals The Development History of Wigry Lake as Shown by Subfossil Cladocera

2007 ◽  
Vol 27 (-1) ◽  
pp. 67-74 ◽  
Author(s):  
Edyta Zawisza ◽  
Krystyna Szeroczyńska
Keyword(s):  
Environmental Changes ◽  
Late Glacial ◽  
Anthropogenic Factors ◽  
Subfossil Cladocera ◽  
Development History ◽  
Water State ◽  
History Of ◽  
Biological Development ◽  
Late Glacial And Holocene ◽  
Five Phases

The Development History of Wigry Lake as Shown by Subfossil Cladocera Environmental changes in Wigry Lake during the Late Glacial and Holocene were studied on the basis of subfossil Cladocera analysis. Cladocera are present in a long core WZS/03 (Słupiańska Bay), and a surface sediments. The sediment contains remains of twenty-seven species belonging to 5 families. Species composition of plankton and the variability in the frequency of specimens of Cladocera made possible to distinguish five phases of their development, which well correlated with palynological phases. The correlation proves that the biological development of Wigry Lake was determined mainly by climatic changes. During the history of the lake, planktonic forms were dominant and represented by Bosminidae. It indicates that the lake was (excluding the initial part) deep and oligo- or mesotrophic. The mesotrophic state has been noted during the Atlantic chronozone and temporary. Taking into consideration the size and the depth as well as the rare human population around the lake it can be stated that the trophy rise was the result of the warm climate. It is also possible that during the last few decades the natural and anthropogenic factors could add. Probably mild winters, warm and long summers, increased tourists number were partly responsible for changes of water state.

LATE GLACIAL AND HOLOCENE GLACIER FLUCTUATIONS IN THE CORDILLERA BLANCA, PERUVIAN ANDES

2016 ◽  
Author(s):  
Nathan Stansell ◽  
◽  
Donald T. Rodbell ◽  
Joseph M. Licciardi ◽  
Mark B. Abbott ◽  
...  
Keyword(s):  
Late Glacial ◽  
Cordillera Blanca ◽  
Peruvian Andes ◽  
Glacier Fluctuations ◽  
Late Glacial And Holocene

Mollusc successions reveal northward postglacial shifts of Alpine species ranges (Bohemian Massif, Czech Republic)

The Holocene ◽  
2021 ◽  
pp. 095968362110116
Author(s):  
Lucie Juřičková ◽  
Jakub Menšík ◽  
Jitka Horáčková ◽  
Vojen Ložek
Keyword(s):  
Czech Republic ◽  
Bohemian Massif ◽  
Late Glacial ◽  
Glacial Refugia ◽  
Land Snails ◽  
Glacial Refugium ◽  
Local Climate ◽  
The Alps ◽  
Species Groups ◽  
Late Glacial And Holocene

The Alps are an important hotspot of species diversity and endemism, as well as a presumed glacial refugium of several species’ groups including land snails. The recent ranges of Alpine endemics are well known, but their fluctuations during the postglacial period mirroring local climate changes are understudied. By analysing five Late Glacial and Holocene mollusc successions from two areas in the southernmost part of the Bohemian Massif (Czech Republic) situated about 100 km north of the Alps, we reveal details of these fluctuations. The Alpine endemic rocky dweller Chilostoma achates had reached the southern part of the Bohemian Massif already in the Late Glacial and disappeared in the Mid-Holocene canopy forest optimum. On the contrary, the northern boundaries of Alpine canopy forest epigeic snails extended further north than today at the turn of the Middle and Late-Holocene, pointing to a more favourable forest microclimate. The earliest known occurrences of several temperate canopy forest central European species, especially Causa holosericea and Discus perspectivus, imply the role of different areas in the Alps as their glacial refugia.

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