By Brian W. Aldiss
The solar is ready to move Nova. Earth and Moon have ceased their axial rotation and current one face constantly to the solar. the intense part of Earth is roofed with carnivorous woodland. this can be the Age of greens. Gren and his girl - let alone the tummybelly males - trip to the much more terrifying darkish facet. one in every of Aldiss' most renowned and long-enduring novels, it really is fast-paced, jam-packed with awesome imagery.
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The non-mechanical issues involved are highly technical (Chapters 8, 9), conceptual, and practical: what quality of information do we need from monitoring data, what is the best benchmark of quality (power for trend, power to assess whether a defined threshold has been crossed, precision, value in updating model weights as in Chapter 4), what analysis will we use to turn data into conclusions, what are the sources of significant variance and bias affecting the study, and how do we estimate and address these components?
Metrics may be related to predictive accuracy or ability to correctly select from a set of alternative statistical models tied to subject-matter scientific hypotheses (Burnham and Anderson 2002; Chapter 15). Clearly, in most broad-scale long-term monitoring studies, there will be numerous unintended uses of data, unexpected changes in objectives or questions of interest, and the potential for new analytical methods. Monitoring programs have to count on, Ecological monitoring 15 and plan for, the unexpected.
Increasingly, few monitoring programs focused on occurrence of species with imperfect detectability would even propose a monitoring design that does not take advantage of developments in this field that are only a few years old, and few reviewers of proposed study designs or subsequent results would be tolerant of those that ignored these developments. g. biases due to incomplete detection of individuals and species present on measured plots). Opportunities for continued progress However, these aren’t all happy days.