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Biology

Selected Works

2008

Articles 1 - 2 of 2

Full-Text Articles in Entire DC Network

Rules Of Engagement: Interspecies Interactions That Regulate Microbial Communities, Ainslie Little, Courtney Jaime Robinson, S Brook Peterson, Kenneth F. Raffa, Jo Handelsman May 2008

Rules Of Engagement: Interspecies Interactions That Regulate Microbial Communities, Ainslie Little, Courtney Jaime Robinson, S Brook Peterson, Kenneth F. Raffa, Jo Handelsman

Courtney Robinson

Microbial communities comprise an interwoven matrix of biological diversity modified by physical and chemical variation over space and time. Although these communities are the major drivers of biosphere processes, relatively little is known about their structure and function, and predictive modeling is limited by a dearth of comprehensive ecological principles that describe microbial community processes. Here we discuss working definitions of central ecological terms that have been used in various fashions in microbial ecology, provide a framework by focusing on different types of interactions within communities, review the status of the interface between evolutionary and ecological study, and highlight important …

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Molecules, Morphology And Fossils: A Comprehensive Approach To Odonate Phylogeny And The Evolution Of The Odonate Wing, T. Heath Ogden Dec 2007

Molecules, Morphology And Fossils: A Comprehensive Approach To Odonate Phylogeny And The Evolution Of The Odonate Wing, T. Heath Ogden

T. Heath Ogden

We undertook a comprehensive morphological and molecular phylogenetic analysis of dragonfly phylogeny, examining both extant and fossil lineages in simultaneous analyses. The legitimacy of higher-level family groups and the phylogenetic relationship between families were tested. Thirteen families were supported as monophyletic (Aeshnidae, Calopterygidae, Chlorocyphidae, Euphaeidae, Gomphidae, Isostictidae, Lestidae, Libellulidae, Petaluridae, Platystictidae, Polythoridae, Pseudostigmatidae and Synthemistidae) and eight as non-monophyletic (Amphipterygidae, Coenagrionidae, Corduliidae, Megapodagrionidae, Protoneuridae and Synlestidae), although Perilestidae and Platycnemididae were recovered as monophyletic under Bayesian analyses. Nine families were represented by one species, thus monophyly was not tested (Epiophlebiidae, Austropetaliidae, Chlorogomphidae, Cordulegastridae, Macromiidae, Chorismagrionidae, Diphlebiidae, Lestoideidae and Pseudolestidae). Epiprocta …

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