© 2017 by S. Andrew Inkpen. Created with Wix.com

COLLABORATIONS

Collaborations listed in other sections are not listed here.

 

Note: The titles below are hyperlinked to downloadable articles.

The Coupling of Taxonomy and Function in Microbiomes

Biology and Philosophy, Forthcoming

(w Douglas GM, Brunet TDP, Leuschen K, Doolittle WF, Langille MGI)

Microbiologists are transitioning from the study and characterization of individual strains or species to the profiling of whole microbiomes and microbial ecology. Equipped with high-throughput methods for studying the taxonomic and functional characteristics of diverse samples, they are just beginning to encounter the conceptual, theoretical, and experimental problems of comparing taxonomy to (micro-ecological) function, and extracting useful measures from such comparisons (i.e. diversity, stability, or "health"). Although still unresolved, these problems are well studied in macro-ecology (the ecology of non-microbes) and are reiterated here as an historical precautionary for microbial ecologists. Beyond expected and unresolved terminological vagueness, we argue that assessments and comparisons of taxonomic and functional profiles in micro-ecology suffer from theoretically unresolvable arbitrariness and ambiguities. We divide these into problems of scale, individuation, and commensurability. We argue that there is no technically/theoretically "correct" scale, individuation, or comparison of taxonomy and function, but there are nonetheless better and worse methodologies for profiling.

Character displacement is an evolutionary pattern. So what causes it?

Biological Journal of the Linnean Society, 2017

(w Stuart YE, Hopkins R, and Bolnick DI)

Character displacement was originally defined simply as a pattern—divergence between two species in sympatry but not allopatry—and it was recognized that multiple processes might generate this pattern. However, over time, character displacement has come to be nearly synonymous with the process of adaptive divergence between species caused by selection stemming from resource-competitive interactions (and if not that, reproductive interactions). This tight link between character displacement and resource competition has generated, and continues to generate, imprecision and confusion in the literature. Here, to address this problem, we suggest unlinking character displacement the pattern from any specific process (e.g., natural selection arising from species interactions). That is, character displacement should be documented as a pattern, agnostically with respect to process. Purposeful, direct investigation of what process generated character displacement then naturally follows. This has the benefit of acknowledging that there can be many different avenues to divergence in sympatry.

Sex-specific foraging behaviors and growth rates in juveniles mediate the development of extreme sexual size dimorphism.

Open Ecology Journal, 2010

(w Foellmer M)

Character displacement was originally defined simply as a pattern—divergence between two species in sympatry but not allopatry—and it was recognized that multiple processes might generate this pattern. However, over time, character displacement has come to be nearly synonymous with the process of adaptive divergence between species caused by selection stemming from resource-competitive interactions (and if not that, reproductive interactions). This tight link between character displacement and resource competition has generated, and continues to generate, imprecision and confusion in the literature. Here, to address this problem, we suggest unlinking character displacement the pattern from any specific process (e.g., natural selection arising from species interactions). That is, character displacement should be documented as a pattern, agnostically with respect to process. Purposeful, direct investigation of what process generated character displacement then naturally follows. This has the benefit of acknowledging that there can be many different avenues to divergence in sympatry.

This site was designed with the
.com
website builder. Create your website today.
Start Now