K. Marshall – författare

Advances in Microbial Ecology was established by the International Com­ mittee on Microbial Ecology (ICOME) as a vehicle for the publication of critical reviews selected to reflect current trends in the ever-expanding field of microbial ecology. Most of the chapters found in Advances in Microbial Ecology have been solicited by the Editorial Board. Individuals are encouraged, however, to submit outlines of unsolicited contributions to any member of the Editorial Board for consideration for inclusion in a subsequent volume of Advances. Contributions are expected to be in­ depth, even provocative, reviews of topical interest relating to the ecology of microorganisms. With the publication of Volume 8 of Advances we welcome to the panel of contributors Martin Alexander, the founding editor of this series, who discusses the range of natural constraints on nitrogen fixation in agri­ cultural ecosystems. Ecological aspects of cellulose degradation are dis­ cussed by L. G. Ljungdahl and K. -E. Eriksson, and of heavy metal responses in microorganisms by T. Duxbury. In his chapter, A. Lee con­ siders the gastrointestinal tract as an ecological system, and comments on the possibility of manipulating this system. The complex interactions among aerobic and anaerobic sulfur-oxidizing bacteria are discussed in terms of natural habitats and chemostat culture by J. G. Kuenen, L. Rob­ ertson, and H. van Gemerden. Finally, J. A. Robinson presents the advantages and limitations in the use of nonlinear regression analysis in determining microbial kinetic parameters in ecological situations. K. C. Marshall, Editor R. M. Atlas B. B.

Advances in Microbial Ecology was established by the International Com­ mittee on Microbial Ecology (ICOME) as a vehicle for the publication of critical reviews selected to reflect current trends in the ever-expanding field of microbial ecology. Most of the chapters found in Advances in Microbial Ecology have been solicited by the Editorial Board. Individuals are encouraged, however, to submit outlines of unsolicited contributions to any member of the Editorial Board for consideration for inclusion in a subsequent volume of Advances. Contributions are expected to be in­ depth, even provocative, reviews of topical interest relating to the ecology of microorganisms. With the publication of Volume 8 of Advances we welcome to the panel of contributors Martin Alexander, the founding editor of this series, who discusses the range of natural constraints on nitrogen fixation in agri­ cultural ecosystems. Ecological aspects of cellulose degradation are dis­ cussed by L. G. Ljungdahl and K. -E. Eriksson, and of heavy metal responses in microorganisms by T. Duxbury. In his chapter, A. Lee con­ siders the gastrointestinal tract as an ecological system, and comments on the possibility of manipulating this system. The complex interactions among aerobic and anaerobic sulfur-oxidizing bacteria are discussed in terms of natural habitats and chemostat culture by J. G. Kuenen, L. Rob­ ertson, and H. van Gemerden. Finally, J. A. Robinson presents the advantages and limitations in the use of nonlinear regression analysis in determining microbial kinetic parameters in ecological situations. K. C. Marshall, Editor R. M. Atlas B. B.

Since the appearance of the first volume of Advances in Microbial Ecology in 1977 under the editorship of Martin Alexander, the series has achieved wide recognition as a source of in-depth, critical, and sometimes provocative reviews on the ecology of microorganisms in natural and man-made ecosystems. Most reviews published in Advances have been prepared by experts at the invitation of the Editorial Board. The Board intends to continue its policy of soliciting reviews, but individuals are encouraged to submit outlines of unsolicited con­ tributions for consideration of their suitability for publication in Advances. Volume 7 of Advances in Microbial Ecology covers a range of topics related to the ecology of microorganisms in natural and artificial habitats. R. M. Atlas discusses the measurement and significance of diversity in microbial communities. The nature of deserts and the activity of microorganisms in desert soils are considered by J. Skujil)s. D. B. Nedwell examines both the input and the mineralization of organic carbon in anaerobic aquatic sediments. The role of microcosms in the evaluation of interactions between pollutants and microorganisms is the basis of a major review by P. H. Pritchard and A. W. Bourquin.

Advances in Microbial Ecology was established by the International Com­ mittee on Microbial Ecology (ICOME) to provide a means for in-depth, critical, and even provocative reviews to emphasize current trends in the rapidly expanding area of microbial ecology. Advances in Microbial Ecol­ ogy is now recognized as a major source of information and inspiration both for practicing and for prospective microbial ecologists. The majority of reviews published in Advances have been prepared by leaders in par­ ticular areas following invitations provided by the Editorial Board. Although the Board intends to continue its policy of soliciting reviews, individual microbial ecologists are encouraged to submit outlines of unsolicited contributions to any member of the Editorial Board for con­ sideration for inclu~ion in Advances. Volume 9 of Advances in Microbial Ecology covers a particularly broad range of topics related to microbial ecology. The potential for applying ribosomal RNA sequence analysis for the definition of natural microbial populations is considered by N. R. Pace, D. A. Stahl, D. J. Lane, and G. J. Olsen. Other reviews on techniques include the applica­ tion of microelectrode technology to microbial ecosystems by N. P. Revsbech and B. B. J0rgensen and the use of rates of nucleic acid synthe­ sis to determine bacterial growth rates in natural aquatic habitats by D. J. W. Moriarty. The contribution by T. Fenchel discusses the ecology of heterotrophic microflagellates. J. H. Andrews and R. F. Harris present the concept of r- and K-selection and its relevance to microbial ecology.