Relationship between food chain length versus temperature
Published On: 6/4/2012
FWS Featured Article: Relationship between food chain length versus temperature
Featured articles are open access for three months so you can see what's hot in the current issue of FWS.
Glazier, D. 2012. Temperature affects food-chain length and macroinvertebrate species richness in spring ecosystems. Freshwater Science 31:575-585.
Highlight: Food chain length has negative nonlinear relationship with increased temperatures (35-93ºC)!
Abstract: I assessed effects of the widest range of temperatures ever examined on maximal food-chain length (L) and macroinvertebrate species richness (S) by a worldwide comparison of spring ecosystems with mean water temperatures (T) ranging from 4.5 to 93°C. Eukaryotic L averaged 3.2 and varied independently of T between 4.5 and 31°C. However, over the relatively narrow T range of 35 to 50°C, L dropped abruptly to 0 and remained so up to 91°C. The negatively nonlinear relationships of L vs T and macroinvertebrate S vs T both deviated from predictions based upon metabolic theory, and the negative effect of T on S contrasted with positive relationships observed at larger regional scales. Thermal tolerance limits apparently play a major role in causing these relationships, but other factors also may be involved (e.g., availability of colonists adapted to different temperatures and temperature-dependent rates of resource use and species interactions that affect population establishment and persistence).
- Making Waves Podcast Episode 26: Carbon Fates, Dr. Erin Hotchkiss more
- Fall 2017 Issue of In the Drift now available! more
- September 2017 Issue of Freshwater Science now online more
- Does Cultural Diversity Matter to Scientific Societies? Read the President's Environment more
- SFS Student Presentation Awards! more
- In the drift just fell into your sampler! The Spring 2015 Newsletter is here! more
- Making Waves Podcast Episode 14: Nitrogen Fixation in a Warming World, Dr. Jill Welter more
The deadline to submit proposals for AQUATROP Special Sessions or Symposiums is now November 17, 2017.more
SFS joins CASS in condemning silencing of EPA scientistsmore
Andy Leidolf appointed as SFS Executive Director
VOTING CLOSED - SFS LOGO CONTEST VOTE!
Over 60 logos were submitted by 28 individuals and narrowed to 3 finalists. Now is your chance to select the winner.more
SFS signs two letters sent to the US EPA regarding the Trump Administration's proposed revisions to the Waters of the US rule