Bioreactors hold great promise for treating graywater in an advanced life support system for space applications. However, questions remain regarding the reproducibility and reliability of biological systems for long-term use. Although there have been numerous studies on ground-based biological systems, most studies focus on a single reactor or a simple (single carbon) waste stream. There have b...

We propose that freshwater calcite microbialites may represent an alternative trajectory toward a community ecology aggregate that achieves some of the biological functions perfected by macroorganismic communities. A distinctive assemblage of microbialites studied at Pavilion Lake, British Columbia, Canada, could be a prototypical example of this transitional stage of biological organization. T...

A variety of genome-scale functional data is available for many microbial species, but determining the biological functionality and metabolic potential of a sequenced organism remains a significant challenge. Biological network integration and mining algorithms provide a means of assembling this body of data, understanding it from a systems level, and applying it to the study of uncharacterized...

Spec~es abundance patterns in natural communities were analyzed using the recently described 'dynamics model' Although the dynamics model is based on biological processes, simulation of which yields patterns similar to those reported for natural communities. 3 shortcomings to the model have been identified: (1) patterns identical to those predicted can also be derived for non-biological communi...

INTRODUCTION Fresh water is an important driving force, cycling minerals and nutrients around the terrestrial environment and has been defined as those systems comprising human communities, socioeconomic interactions, and biophysical processes co-occurring in space and time. Evaluation of the biological community of a water body provides a sensitive and cost effective means of assessing stream ...