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Permafrost degradation is leading to rapid wetland formation in northern peatland ecosystems, altering the role of these ecosystems in the global carbon cycle. I reviewed the literature on the history of the MPP theory, including tracing its origins to The Second Law of Thermodynamics. To empirically test the MPP, I collected soils along a gradient of ecosystem development and: 1) quantified the rate of adenosine triphosphate (ATP) production--literally cellular energy--to test the MPP; 2) quantified greenhouse gas production (CO2, CH4, and N2O) and microbial genes that produce enzymes catalyzing greenhouse gas production, and; 3) sequenced the 16s rRNA gene from soil microbes to investigate microbial community composition across the chronosequence of wetland development. My results suggested that the MPP and other related theoretical constructs have strong potential to further inform our understanding of ecosystem development. Soil system power (ATP) decreased temporarily as the ecosystem reorganized after disturbance to rates of power production that approached pre-disturbance levels. Rates of CH4 and N2O production were higher at the newly formed bog and microbial genes involved with greenhouse gas production were strongly related to the amount of greenhouse gas produced. DNA sequencing results showed that across the chronosequence of development, the two relatively mature ecosystems--the peatland forest ecosystem prior to permafrost degradation and the oldest bog--were more similar to one another than to the intermediate, less mature bog. Collectively, my results suggest that ecosystem age, rather than ecosystem state, was a more important driver for ecosystem structure and function.
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For the study, the author prepared and performed a recital of the five works that are discussed: Wind Trace (1984), Trio Interlink (1990), Rhythm Gradation (1993), Perspectives II (1996), and Ballade (2002). The document is a performance guide that also provides background information on each piece. The guide discusses technical and interpretative issues uncovered through firsthand preparation and performance, and provides suggestions to solve them. At the conclusion, the author draws connections between these pieces, to highlight similarities that will be helpful to consider when preparing performances of any of his works involving percussion. Finally, an exhaustive catalog of known Ichiyanagi percussion works is provided as a resource for further performance and research.
Ichiyanagi has been writing for percussion since the 1970s. His catalog includes solos, chamber pieces, ensemble pieces, mixed-chamber pieces, and concerti. With recent compositions like Marimba Scenery (2011), Concerto for marimba and orchestra (2012), and the duo Two Dimensions (2012), Ichiyanagi continues to write for percussion. Virtuosi such as Sumire Yoshihara, Atsushi Sugahara, Momoko Kamiya, and Mutsuko Taneya have commissioned and premiered works by the composer. These pieces are on par with the challenging repertoire that has dominated percussion literature since the mid-twentieth century. Nonetheless, the author has found no existing document that is fully devoted to Ichiyanagi’s percussion work.
The ASU School of Dance presents School of Dance LIVE!, September 7-9, with works by dance faculty, performed at Galvin Playhouse.
The ASU School of Dance presents Poetry Both Fierce and Fragile: Spring Concert, April 19-22, with works by guest artists, dance faculty, graduate, and undergraduate students, performed at Galvin Playhouse.
The ASU School of Dance presents Moving Ground, November 16-19, with works by dance faculty, graduate, and visiting artists, performed at the Dance Studio Theatre, PEBE 132.
The ASU School of Dance presents Undergraduate Projects Showing, April 11-12, with works by dance undergraduate students, performed at Margaret Gisolo Dance Studio, PEBE 132.
The ASU School of Dance presents The Dance Annual, March 2-4, with works by dance faculty, alumni, graduate, undergraduate, and visiting artists, performed at the Galvin Playhouse Theatre.
The ASU School of Dance presents Graduate Projects Showing, October 20-21, with works by dance graduate students, performed at Margaret Dance Studio, PEBE 132.
The ASU School of Dance presents The Dance Annual, April 15-17, with works by dance faculty, alumni, graduate, undergraduate, and visiting artists, performed at Margaret Gisolo Dance Studio.