 Link Long Term Research in Environmental Biology (LTREB) National Science Foundation (NSF) 00/00/0000 Rolling Deadline. The Long Term Research in Environmental Biology (LTREB) Program supports the generation of extended time series of data to address important questions in evolutionary biology, ecology, and ecosystem science. Research areas include, but are not limited to, the effects of natural selection or other evolutionary processes on populations, communities, or ecosystems; the effects of interspecific interactions that vary over time and space; population or community dynamics for organisms that have extended life spans and long turnover times; feedbacks between ecological and evolutionary processes; pools of materials such as nutrients in soils that turn over at intermediate to longer time scales; and external forcing functions such as climatic cycles that operate over long return intervals. Environmental Biology, Scientific Research, Ecosystem Science, Community Research, Feedbacks. Awards are not to exceed $00,000 total per year and $000,000 over a five-year effort. The foundation anticipates making six awards annually, pending availability of funds. The solicitation outlines renewal procedures following the initial award. National Link 