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Full-Text Articles in Life Sciences
A Guide To The Natural History Of The Cedarburg Bog: Part 1, James A. Reinartz
A Guide To The Natural History Of The Cedarburg Bog: Part 1, James A. Reinartz
Field Station Bulletins
The boardwalk that extends to the center of the Cedarburg Bog is the UWM Field Station's most heavily used teaching facility. Research is also conducted in the Bog, which holds an understandable fascination for researchers and students of natural history because of its size, complexity, diversity and geographical isolation from similar communities. Because of the increasing research and teaching use of the Bog, it has become essential that some of what is known about the natural history of the Bog be assembled and summarized in an easily accessible introduction and guide. The guide contains too much material to fit into …
Natural Tree Reproduction In Urban Environments, John Boyd, Forest Stearns
Natural Tree Reproduction In Urban Environments, John Boyd, Forest Stearns
Field Station Bulletins
Three contrasting urban areas in Milwaukee County were sampled to determine the tree species reproducing and the habitats in which seedlings become established. Habitats most favorable for seedling establishment were shrub hedges and areas along fence lines or adjacent to buildings. Overall, elm and ash were the taxa most successful in establishing seedlings. In the Menomonee Valley, seedlings of boxelder and tree-of-heaven were most abundant with elm and ash close behind, while in Shorewood and Brown Deer, a great variety of seedlings was present. Elm, ash, boxelder, Norway maple, buckthorn, cherry and mountain ash were the most prevalent. Successful seedling …
Labrador Tea (Ledum Groelandicum) In The Cedarburg Bog, James A. Reinartz
Labrador Tea (Ledum Groelandicum) In The Cedarburg Bog, James A. Reinartz
Field Station Bulletins
The Labrador tea population in the Cedarburg Bog is a southern outlyer from its more northerly range and is disjunct by at least 40 miles from the nearest population. The discovery of Labrador tea in the Bog raises to 11 the number of vascular plants that reach their absolute southernmost Wisconsin boundaries in the Cedarburg Bog (5 dicots, 5 monocots, 1 gymnosperm). It raises the number of vascular plants at, or near, the southern edge of their range in the Cedarburg Bog to at least 35.
The Seedbank Of Woodlots In An Agricultural Matrix., Glenn R. Guntenspergen, Michael Kunowski
The Seedbank Of Woodlots In An Agricultural Matrix., Glenn R. Guntenspergen, Michael Kunowski
Field Station Bulletins
Soil samples from four woodlots representing different land-use history and canopy vegetation were sampled to determine the composition of the seedbank. Seeds of 73 taxa distributed among 35 families were represented. Comparisons among the seedbank of the four woodlots were made using Sorensen's Index of Similarity. Grazing affected the similarity between seedbanks more than did canopy composition. Twenty-seven percent of the aggregate seedbank was composed of weeds or widespread annuals suggesting an important contribution from the surrounding matrix. The Impact of the current disturbance regime on the future composition of vegetation is discussed.
Wintering Populations Of Juncos At The Uwm Field Station, Charles M. Weise
Wintering Populations Of Juncos At The Uwm Field Station, Charles M. Weise
Field Station Bulletins
Since 1966 the winter populations of Dark-eyed Juncos, Junco hyemalis at the UWM Field Station have been monitored by mark-recapture methods. Schnabel estimates with 95% confidence intervals are presented for each winter. The population has varied irregularly between 60 and 196. Comparisons of these estimates with Wisconsin Christmas Bird Counts of juncos reveals a positive correlation with the average number of juncos per Wisconsin Christmas Bird Count, indicating that the year-to-year fluctuations at the Field Station correspond to the general state-wide fluctuations. However, the Christmas counts show a rising trend over the past 19 years while the Field Station population …