scholarly journals Botanical Survey of the Huron River Valley. II. A Peat Bog and Morainal Lake

1904 ◽  
Vol 37 (1) ◽  
pp. 35-51 ◽  
Author(s):  
Lewis H. Weld
2017 ◽  
Vol 36 (3) ◽  
pp. 125-149 ◽  
Author(s):  
Zbigniew Zwoliński ◽  
Iwona Hildebrandt-Radke ◽  
Małgorzata Mazurek ◽  
Mirosław Makohonienko

Abstract Poznań, a city in central-western Poland, is located in the lowland region but has no less attractive geomorphological and human history. It was here that Poland was born at the end of the tenth century. The city’s location is connected with the meridian course of the Warta River valley. In contrast, in the northern part of the city, there is a vast area of the frontal moraines of the Poznań Phase of the Weichselian Glaciation. Against the backdrop of the geomorphological development of the city, the article presents the existing geosites, classified as urban geosites. The present geosites include three lapidaries with Scandinavian postglacial erratics, one of them also with stoneware, a fragment of a frontal push moraine and impact craters. Besides, three locations of proposed geosites with rich geomorphological and/or human history were identified. These are as follows: the peat bog located in the northern part of the city, defence ramparts as exhumed anthropogenic forms, and the Warta River valley. The existing and proposed geosites in Poznań were evaluated in three ways. In general, it should be assumed that the proposed new geosites are higher ranked than the current ones.


1905 ◽  
Vol 40 (6) ◽  
pp. 418-448 ◽  
Author(s):  
Edgar Nelson Transeau
Keyword(s):  

1902 ◽  
Vol 34 (2) ◽  
pp. 125-139 ◽  
Author(s):  
Howard S. Reed

1905 ◽  
Vol 40 (5) ◽  
pp. 351-375 ◽  
Author(s):  
Edgar Nelson Transeau
Keyword(s):  

2016 ◽  
Vol 43 (1) ◽  
pp. 41-52 ◽  
Author(s):  
Agnieszka Błońska ◽  
Dariusz Halabowski ◽  
Agnieszka Sowa

Abstract The paper presents results of a study on the population structure of the orchid Liparis loeselii growing in the Warta River valley peat bog in Myszków (Woźnicko-Wieluńska Upland, S. Poland). Individuals of L. loeselii occurred in patches of Menyantho trifoliatae-Sphagnetum teretis and Eleocharitetum pauciflorae – associations. The demographic structure of L. loeselii populations was described by variations in plant height, the length and width of leaves and the number of flowers of the constituting individuals. It was observed that habitat conditions such as conductivity, pH and the percentage cover of tall perennials had the strongest effect on the structure of L. loeselii populations.


1906 ◽  
Author(s):  
Edgar Nelson Transeau ◽  
Edgar Nelson Transeau
Keyword(s):  

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