Introduction: the persistence of community -- Communal complexity on the margins -- Measuring social complexity in the early iron age -- Producing community -- Managing community -- Conclusion: the complex community.

In its statutory authority (National Science Foundation Act of 1950, as amended), the NSF is directed to both initiate and support basic scientific research. In its Ecology Program, one mode of initiating research is to en courage the development of new ideas through advisory workshops. The NSF is specifically directed to strengthen our nation's research potential. In addition, stimulating new approaches to research will continue to be prominent in the coming years as federal attention is given to increasing the innovativeness and competitiveness of the U. S. in science and engineering. A decision to initiate a workshop does not arise de novo in the Ecology Program. Rather, it emerges from panel discussions, conversations with in vestigators at meetings or on the phone, and from discussions between pro gram officers in the Division of Biotic Systems and Resources. This workshop was developed to provide advice to the NSF and the lim nological community. Some NSF perceptions on future funding for ecolog ical research on lake communities are presented here. Researchers often mentioned a paucity of innovative lake ecology at the community level. This perception was accompanied by a certain frustration since lakes probably have the best empirical data base of any natural environment and should continue to lead in the development of ecological concepts. Members of NSF advisory panels sometimes expressed similar concerns during consid eration of proposals for lake research.

Dr Tainter describes nearly two dozen cases of collapse and reviews more than 2000 years of explanations. He then develops a new and far-reaching theory.

The Complex Forest systematically examines the theory, processes, and early outcomes of a research and management approach called adaptive collaborative management (ACM). An alternative to positivist approaches to development and conservation that assume predictability in forest management, ACM acknowledges the complexity and unpredictability inherent in any forest community and the importance of developing solutions together with the forest peoples whose lives will be most affected by the outcomes. Building on earlier work that established the importance of flexible, collaborative approaches to sustainable forest management, The Complex Forest describes the work of ACM practitioners facing a broad range of challenges in diverse settings and attempts to identify the conditions under which ACM is most effective. Case studies of ACM in 33 forest sites in 11 countries together with Colfer's systematic comparison of results at each site indicate that human and institutional capabilities have been strengthened. In Zimbabwe, for example, the number of women involved in decisionmaking soared. In Nepal, community members detected and sanctioned dishonest community elites. In Cameroon and Bolivia, learning programs resulted in better conflict management. These are early results, but a wide range of recent research supports Colfer's belief that these new capabilities will eventually contribute to higher incomes and to sustainable improvements in the health of forests and forest peoples. The Complex Forest reinforces calls for change in the way we plan conservation and development programs, away from command-and-control approaches, toward ones that require bureaucratic flexibility and responsiveness, as well as greater local participation in setting priorities and problem solving.

In the United States, some populations suffer from far greater disparities in health than others. Those disparities are caused not only by fundamental differences in health status across segments of the population, but also because of inequities in factors that impact health status, so-called determinants of health. Only part of an individual's health status depends on his or her behavior and choice; community-wide problems like poverty, unemployment, poor education, inadequate housing, poor public transportation, interpersonal violence, and decaying neighborhoods also contribute to health inequities, as well as the historic and ongoing interplay of structures, policies, and norms that shape lives. When these factors are not optimal in a community, it does not mean they are intractable: such inequities can be mitigated by social policies that can shape health in powerful ways. Communities in Action: Pathways to Health Equity seeks to delineate the causes of and the solutions to health inequities in the United States. This report focuses on what communities can do to promote health equity, what actions are needed by the many and varied stakeholders that are part of communities or support them, as well as the root causes and structural barriers that need to be overcome.

Online communities offer a wide range of opportunities today, whether you're supporting a cause, marketing a product or service, or developing open source software. The Art of Community will help you develop the broad range of talents you need to recruit members to your community, motivate and manage them, and help them become active participants. Author Jono Bacon offers a collection of experiences and observations from his decade-long involvement in building and managing communities, including his current position as manager for Ubuntu, arguably the largest community in open source software. You'll discover how a vibrant community can provide you with a reliable support network, a valuable source of new ideas, and a powerful marketing force. The Art of Community will help you: Develop a strategy, with specific objectives and goals, for building your community Build simple, non-bureaucratic processes to help your community perform tasks, work together, and share successes Provide tools and infrastructure that let contributors work quickly Create buzz around your community to get more people involved Track the community's work so it can be optimized and simplified Explore a capable, representative governance strategy for your community Identify and manage conflict, including dealing with divisive personalities

Beginning in the tenth century, Chaco Canyon emerged as an important center whose influence shaped subsequent cultural developments throughout the Four Corners area of the American Southwest. Archaeologists investigating the prehistory of Chaco Canyon have long been impressed by its massive architecture, evidence of widespread trading activities, and ancient roadways that extended across the region. Research on Chaco Canyon today is focused on what the remains indicate about the social, political, and ideological organization of the Chacoan people. Communities with great houses located some distance away are of particular interest, because determining how and why peripheral areas became associated with the central canyon provides insight into the evolution of the Chacoan tradition. This volume brings together twelve chapters by archaeologists who suggest that the relationship between Chaco Canyon and outlying communities was not only complex but highly variable. Their new research reveals that the most distant groups may have simply appropriated Chacoan symbolism for influencing local social and political relationships, whereas many of the nearest communities appear to have interacted closely with the central canyon--perhaps even living there on a seasonal basis. The multifaceted approach taken by these authors provides different and refreshing perspectives on Chaco. Their contributions offer new insight into what a Chacoan community is and shed light on the nature of interactions among prehistoric communities.

Research on decomposer communities of terrestrial ecosystems for a long time has focussed on microbial biomass and gross turnover parameters. Recently, more and more attempts are made to look beyond the biomass, and more specifically determine functions and populations on a smaller scale-in time and space. A multitude of techniques is being improved and developed. Garland and Mills (1991) triggered a series of publications on substrate utilization tests in the field of microbial ecology. Despite several promising results for different applications in different laboratories, many problems concerning the assay and the interpretation of results became evident. After individual discussions on the approach with colleagues from various laboratories we started to plan a workshop on the matter. The response on our first circular was extraordinary, and instead of a small workshop it became a meeting with almost 150 participants. The meeting was named 'Substrate use for characterization of microbial communities in terrestrial ecosystems' (SUBMECO) and was held in Innsbruck, Austria, from Oct. 16-18, 1996. The very focussed scope attracted enthusiastic advocates of the approach, and also serious critics. Some of the topics concerned improvements of current inoculation and incubation techniques, ranging from sample pre-treatment, inoculum density and incubation temperature to statistical data handling. New methods for calculating microbial diversity were proposed, as well as bootstrap methods that allow statistics with many variables on a relatively low number of replicates.

How insights from the social sciences, including social psychology and economics, can improve the design of online communities. Online communities are among the most popular destinations on the Internet, but not all online communities are equally successful. For every flourishing Facebook, there is a moribund Friendster—not to mention the scores of smaller social networking sites that never attracted enough members to be viable. This book offers lessons from theory and empirical research in the social sciences that can help improve the design of online communities. The authors draw on the literature in psychology, economics, and other social sciences, as well as their own research, translating general findings into useful design claims. They explain, for example, how to encourage information contributions based on the theory of public goods, and how to build members' commitment based on theories of interpersonal bond formation. For each design claim, they offer supporting evidence from theory, experiments, or observational studies.