3,227 research outputs found
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Plant-soil feedbacks and competitive interactions between invasive Bromus diandrus and native forb species
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Nitrogen enrichment contributes to positive responses to soil microbial communities in three invasive plant species
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Interactive effects of nitrogen deposition and drought-stress on plant-soil feedbacks of Artemisia californica seedlings
The construction of a unit and workbook of exercises for the slow learner to develop comprehension and increase study skills for use in the teaching of an American history unit on the westward movement in the United States on a sixth grade level.
Thesis (Ed.M.)--Boston University
N.B.:pages missing: 170, 171, 173 from original cop
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Restoration Ecology at 25 years: the editors reflect on how we got here
The emergence of female adolescent protagonists in selected twentieth-century novels from French Canada, Germany and Austria
The history of adolescent protagonists in adult literature is relatively brief. Young heroes and heroines only begin to appear significantly in narratives at the turn of the twentieth century, since the concept of adolescence is relatively new. During the first half of the 19003 the number of novels written with female adolescent protagonists in countries such as Austria, Germany, and Canada varies substantially. In German-speaking countries there are relatively few novels with young heroines, although this tendency has increased since the students\u27 and women\u27s movements in the late 19603 and early 19703. In contrast, works depicting female adolescent protagonists occur more frequently in French-Canadian novels written by female authors throughout and even before the twentieth century. The purpose of this dissertation is to investigate and compare themes in four twentieth-century novels which have female adolescent protagonists. These themes include the expression of love and sexuality, the individual’s relationships with friends and family members, the young woman’s response to a crisis, and the influence of social institutions. Care was taken to select novels which represent different historical periods of this century. Two of the novels are from German-speaking countries: Die Klosterschule (1968) by the Austrian novelist Barbara Frischmuth and Nach Mitternacht (193 7) by the German author Irmgard Keun. Two French-Canadian novels have been chosen: Gabrielle Roy\u27s Rue Deschambault (1955) and Anne Hébert’s Les Fous de Bassan (1982)
Causes of fermentation in canned vegetables
Citation: Justin, Edith B. Causes of fermentation in canned vegetables. Senior thesis, Kansas State Agricultural College, 1908.Introduction: When one thinks of the number of people who depend upon canned products for the greater part of their vegetable supply and of the immense amount of labor and capital expended each year in the canning industry, one my readily see the importance of having the vegetables canned in such a manner that the consumer may receive them in perfect condition
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Simple Approaches to Improve Restoration of Coastal Sage Scrub Habitat in Southern California
Extractable nitrogen and microbial community structure respond to grassland restoration regardless of historical context and soil composition.
Grasslands have a long history of invasion by exotic annuals, which may alter microbial communities and nutrient cycling through changes in litter quality and biomass turnover rates. We compared plant community composition, soil chemical and microbial community composition, potential soil respiration and nitrogen (N) turnover rates between invaded and restored plots in inland and coastal grasslands. Restoration increased microbial biomass and fungal : bacterial (F : B) ratios, but sampling season had a greater influence on the F : B ratio than did restoration. Microbial community composition assessed by phospholipid fatty acid was altered by restoration, but also varied by season and by site. Total soil carbon (C) and N and potential soil respiration did not differ between treatments, but N mineralization decreased while extractable nitrate and nitrification and N immobilization rate increased in restored compared with unrestored sites. The differences in soil chemistry and microbial community composition between unrestored and restored sites indicate that these soils are responsive, and therefore not resistant to feedbacks caused by changes in vegetation type. The resilience, or recovery, of these soils is difficult to assess in the absence of uninvaded control grasslands. However, the rapid changes in microbial and N cycling characteristics following removal of invasives in both grassland sites suggest that the soils are resilient to invasion. The lack of change in total C and N pools may provide a buffer that promotes resilience of labile pools and microbial community structure
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