SFA Gardens Newsletter, Mar 1993

https://scholarworks.sfasu.edu/sfa_gardens_newsletters/1042/thumbnail.jp

The Most Immediate and Easily Observed Impacts of Climate Change

The Buda Arboretum is one of Hungary\u27s most outstanding collection gardens, located on the southern slope of Gellért Hill, on an area of 7.5 hectares. Although the history of the arboretum and the institution dates back nearly 150 years, the composition of the plants has been constantly evolving and changing, adapting to the increasingly extreme climate change. The climatic condition and maintenance of the garden mimic urban conditions, making it a good test site for studies in addition to its collection and educational role. Plants are very sensitive to changes, whether phenological, physiological, or morphological. In our research, we have studied the different phenological phases of all taxa, their development, and adaptation to the living conditions of the arboretum, which is illustrated in this paper by the example of the genus maple. The maple is one of the most common genus in urban areas, several species are native, and several Hungarian and foreign cultivars have been tested in the recent past, in stressed urban conditions, selection work in nurseries has resulted in almost all cases in the use of horticultural cultivars instead of basic species. According to our analyses, the Buda Arboretum has a total of 33 maple taxa, 63 planted specimens, most of which showed severe leaf drying and slight dehydration during the summer drought months. Among the native taxa, with the exception of field maple (Acer campestre), most maples, such as the Norway maple (Acer platanoides) and the sycamore maple (Acer pseudoplatanus) are less tolerant of polluted and dry environments. Their phenological and physiological responses to environmental changes (sprouting, dehydration, defoliation, etc.) can be used as a predictor of their urban climate tolerance. The selection of suitable taxa for urban tolerance is based on the longest possible healthy canopy. This is why the selection of suitable species for future replanting and new tree plantations is an increasingly complex task. According to our phenological and climatological studies over the last years, the most acclimatized maple taxa were the Montpellier maple (Acer monspessulanum), the Amur maple (Acer tataricum subsp. ginnala), which can be proposed for planting in the 21st century or can be a starting point for future breeding processes, thus providing a variety of plant application (linear element such as greenway planting, alleés, hedge, or in groups or solitary specimens) in urban public spaces, with a wide range of forms and colors

SFA Gardens Newsletter, May 1987

https://scholarworks.sfasu.edu/sfa_gardens_newsletters/1045/thumbnail.jp

SFA Gardens Newsletter, Feb 1991

https://scholarworks.sfasu.edu/sfa_gardens_newsletters/1037/thumbnail.jp

The forest for the trees: how a local arboretum shapes rhetoric and discourse surrounding environmentalism.

Environmental communication has been situated as a crisis discipline; however, scholars have recently explored how to shift to include care within the discipline. To be sure, this does not mean the crisis element should be abandoned, but, instead coupled with care so that environmental messages are positive and forward looking. This project contributes to this shift by looking at how green spaces are constructed to deliver messages of environmental care. More specifically, I analyze how Bernheim Arboretum and Research Forest, located about 30 miles South of Louisville, KY, has been constructed and works to promote environmental care in a variety of ways. To do this, I immersed myself as a participatory observer and, over the course of three years, attended eight education classes and two research hikes, talked with Bernheim employees, and, overall, spent around 100 hours at the arboretum. My findings show how various ways of delivering environmental messages (e.g., education classes, hikes, art) work to promote specific aspects of environmental care such as reverence, nurturance, restoration, and inspiration. This project points to one way that environmental communication scholarship can further the discipline’s understanding of how to promote care

A Guide for Extending Nature Lessons at the Yakima Arboretum

The importance of providing a hands on natural environment curriculum was examined. Sources from 1938-1996 were found supporting the importance of such a curriculum. A search was conducted on the availability of a natural habitat curriculum that used a local resource. The search discovered the Yakima Arboretum had seven areas of interest along with a packet of brief lesson suggestions. These lessons were extended to include classroom activities that would provide students with background knowledge prior to a field trip to the Arboretum

An examination of drought-stress avoidance and germinability of katsura tree

After drought ended, net assimilation rate and relative growth rate of plants in drought treatments did not decrease compared to undroughted controls. Recommendations for seed propagation of katsura vary. A study was designed to measure the response of C japonicum and Cercidiphyllum magnificum (Nakai) Nakai seed to stratification and irradiance. Germinability of two sources of C. japonicum and one source of C. magnificum was determined after not stratifying or stratifying seeds at 3.5 ñ 0.5 ⁰C for 8 days and germinating them at 25 ⁰C in darkness or under a 15-hour photoperiod of 64 ñ 8 [Mu]mol÷⁻ò÷.S⁻ù photosynthetically active radiation (PAR) for 21 days. Stratification was not required for germination, but did increase germination percentage, peak value, and germination value for both species.Stratification increased germination percentages of the two sources of C. japonicum from 41% to 90% and 43 % to 60%, respectively, and germination percentage of C. magnificum from 12% to 24%. PAR enhanced germination of unstratified seeds of one source of C. japonicum and of C. magnificum, increasing germination percentages from 34% to 52% and 8% to 15%, respectively. I conclude that katsura is a drought avoider and that stratification and PAR improve germinability of katsura seeds.The katsura tree (Cercidiphyllum japonicum Sieb. & Zucc.) is highly valued as an ornamental plant, yet has been researched very little. The tree has a reputation as being drought intolerant and also lacks a standardized method of propagation by seed. In a greenhouse study designed to examine the response of trees subjected to drought and non-drought conditions, it was found that trees lowered transpirational water loss and avoided drought stress by the mechanism of drought-induced leaf abscission. Plants in single- and multiple-drought treatments underwent a 34% and 63% reduction in lamina dry mass, respectively. After abscission, trees in the single-drought treatment recovered 112% of the lost leaf dry mass within 24 days

Missouri Botanical Garden bulletin.

v.38 (1950

A Guide for Extending Nature Lessons at the Yakima Arboretum

The importance of providing a hands on natural environment curriculum was examined. Sources from 1938-1996 were found supporting the importance of such a curriculum. A search was conducted on the availability of a natural habitat curriculum that used a local resource. The search discovered the Yakima Arboretum had seven areas of interest along with a packet of brief lesson suggestions. These lessons were extended to include classroom activities that would provide students with background knowledge prior to a field trip to the Arboretum