Spatiotemporal modulation of biodiversity in a synthetic chemical-mediated ecosystem.

Journal Article (Journal Article)

Biodiversity, or the relative abundance of species, measures the persistence of an ecosystem. To better understand its modulation, we analyzed the spatial and temporal dynamics of a synthetic, chemical-mediated ecosystem that consisted of two engineered Escherichia coli populations. Depending on the specific experimental conditions implemented, the dominant interaction between the two populations could be competition for nutrients or predation due to engineered communication. While the two types of interactions resulted in different spatial patterns, they demonstrated a common trend in terms of the modulation of biodiversity. Specifically, biodiversity decreased with increasing cellular motility if the segregation distance between the two populations was comparable to the length scale of the chemical-mediated interaction. Otherwise, biodiversity was insensitive to cellular motility. Our results suggested a simple criterion for predicting the modulation of biodiversity by habitat partitioning and cellular motility in chemical-mediated ecosystems.

Full Text

Duke Authors

Cited Authors

  • Song, H; Payne, S; Gray, M; You, L

Published Date

  • December 2009

Published In

Volume / Issue

  • 5 / 12

Start / End Page

  • 929 - 935

PubMed ID

  • 19915540

Pubmed Central ID

  • PMC2782429

Electronic International Standard Serial Number (EISSN)

  • 1552-4469

International Standard Serial Number (ISSN)

  • 1552-4450

Digital Object Identifier (DOI)

  • 10.1038/nchembio.244


  • eng