Coupled human and natural system dynamics as key to the sustainability of Lake Victoria's ecosystem services

East Africa’s Lake Victoria provides resources and services to millions of people on the lake’s shores and abroad. In particular, the lake’s fisheries are an important source of protein, employment, and international economic connections for the whole region. Nonetheless, stock dynamics are poorly understood and currently unpredictable. Furthermore, fishery dynamics are intricately connected to other supporting services of the lake as well as to lakeshore societies and economies. Much research has been carried out piecemeal on different aspects of Lake Victoria’s system; e.g., societies, biodiversity, fisheries, and eutrophication. However, to disentangle drivers and dynamics of change in this complex system, we need to put these pieces together and analyze the system as a whole. We did so by first building a qualitative model of the lake’s social-ecological system. We then investigated the model system through a qualitative loop analysis, and finally examined effects of changes on the system state and structure. The model and its contextual analysis allowed us to investigate system-wide chain reactions resulting from disturbances. Importantly, we built a tool that can be used to analyze the cascading effects of management options and establish the requirements for their success. We found that high connectedness of the system at the exploitation level, through fisheries having multiple target stocks, can increase the stocks’ vulnerability to exploitation but reduce society’s vulnerability to variability in individual stocks. We describe how there are multiple pathways to any change in the system, which makes it difficult to identify the root cause of changes but also broadens the management toolkit. Also, we illustrate how nutrient enrichment is not a self-regulating process, and that explicit management is necessary to halt or reverse eutrophication. This model is simple and usable to assess system-wide effects of management policies, and can serve as a paving stone for future quantitative analyses of system dynamics at local scales.

"An attentive Ear, a watchful Eye, and a Calm judicious Pen": William Samuel Johnson, the Colonial Agents, and the Transformation of the British Atlantic World

By looking at Great Britain and the American colonies in conjunction with the larger British Atlantic Empire, historians can better understand the political, social, and cultural transformations that occurred when transatlantic actors met. William Samuel Johnson is an example of an "ordinary" agent who nonetheless had extensive contacts with numerous British and American thinkers. While acting on Connecticut's behalf in London between 1767 and 1771, he sent reports back to Connecticut governors Jonathan Trumbull and William Pitkin on parliamentary proceedings while corresponding with the people who traveled around the Atlantic world during this critical period-merchants, seafarers, emigrants, soldiers, missionaries, radicals and conservatives, reformers, and politicians. He is also representative of the late eighteenth-century empire writ large. Agents, who had once been a source of stability in the far-flung colonies, became a destabilizing force as confusion and conflict grew over conceptual ideas of what constituted "the empire" and who was included in it. Johnson was a sane observer in the midst of the ideological and administrative upheaval of the 1760's and 1770's. His subsequent loyalism and political obscurity during the war years was in many ways a result of his attempts to reconcile various factional interests during his tenure as an agent. Although he did his best to resolve these divisions and provide an accurate account of the powerful nationalistic forces gathering on both sides of the Atlantic on the eve of the American Revolution, the agents' collective failures as transatlantic mediators helped bring about the collapse of an imperial community. This disintegration had dramatic effects on the whole of the Atlantic world.

The poetical works of William Shenstone : with the life of the author and a description of the leasowes

William Shenstone

Shakers : compendium of the origin, history, princicples, rules and regulations, government, and doctrines of the United Society of Believers in Christ's Second Appearing : with biographies of Ann Lee, William Lee, Jas. Whittaker, J. Hocknell, J. Meacham, and Lucy Wright

by F. W. Evans

William Crotch, This Celebrated Child who discover'd extraordinary Talents for Music during the Third Year of his Age, was born at Norwich July 5th. 1775.

Signatur des Originals: S 36/G03990

Catalogue of the manuscripts in the Hebrew character : collected and bequeathed to Trinity College Library by the late William Aldis Wright

by Herbert Loewe

Dr. William Gorgas and his style of management against yellow fever during the construction of the Panama Canal: A historical case study

This study describes the style of management of Dr. William Gorgas as he led the public health effort to reduce diseases to a level that permitted the completion of the Panama Canal construction. Initially, Gorgas was skeptical of the mosquito vector theory. He fully accepted this theory after participating in Walter Reed’s massive cleanup of Havana, Cuba during the Spanish American War of 1898. During 1905 to 1914, Gorgas was selected to lead the sanitary effort during the construction of the Panama Canal. The lessons learned from this historical case study provide public health administrators with guidance to effectively lead current and future infectious diseases threats. Understanding styles of management within the context of disease control is essential in tackling epidemics like yellow fever and other infectious diseases. ^