Advanced

Terrestrial support of lake food webs: Synthesis reveals controls over cross-ecosystem resource use

Tanentzap, Andrew J.; Kielstra, Brian W.; Wilkinson, Grace M.; Berggren, Martin LU ; Craig, Nicola; del Giorgio, Paul A.; Grey, Jonathan; Gunn, John M.; Jones, Stuart E. and Karlsson, Jan, et al. (2017) In Science advances 3(3). p.1-1
Abstract
Widespread evidence that organic matter exported from terrestrial into aquatic ecosystems supports recipient food webs remains controversial. A pressing question is not only whether high terrestrial support is possible but also what the general conditions are under which it arises. We assemble the largest data set, to date, of the isotopic composition (d2H, d13C, and d15N) of lake zooplankton and the resources at the base of their associated food webs. In total, our data set spans 559 observations across 147 lakes from the boreal to subtropics. By predicting terrestrial resource support from within-lake and catchment-level characteristics, we found that half of all consumer observations that is, the median were composed of at least 42%... (More)
Widespread evidence that organic matter exported from terrestrial into aquatic ecosystems supports recipient food webs remains controversial. A pressing question is not only whether high terrestrial support is possible but also what the general conditions are under which it arises. We assemble the largest data set, to date, of the isotopic composition (d2H, d13C, and d15N) of lake zooplankton and the resources at the base of their associated food webs. In total, our data set spans 559 observations across 147 lakes from the boreal to subtropics. By predicting terrestrial resource support from within-lake and catchment-level characteristics, we found that half of all consumer observations that is, the median were composed of at least 42% terrestrially derived material. In general, terrestrial support of zooplankton was greatest in lakes with large physical and hydrological connections to catchments that were rich in aboveground and belowground organic matter. However, some consumers responded less strongly to terrestrial resources where within-lake production was elevated. Our study shows that multiple mechanisms drive widespread cross-ecosystem support of aquatic consumers across Northern Hemisphere lakes and suggests that changes in terrestrial landscapes will influence ecosystem processes well beyond their boundaries. (Less)
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Science advances
volume
3
issue
3
pages
10 pages
publisher
American Association for the Advancement of Science (AAAS)
external identifiers
  • wos:000397044000038
ISSN
2375-2548
DOI
10.1126/sciadv.1601765
language
English
LU publication?
yes
id
3e100257-cea7-4471-9ceb-79c176b499f0
date added to LUP
2017-03-23 08:35:13
date last changed
2017-09-18 11:33:46
@article{3e100257-cea7-4471-9ceb-79c176b499f0,
  abstract     = {Widespread evidence that organic matter exported from terrestrial into aquatic ecosystems supports recipient food webs remains controversial. A pressing question is not only whether high terrestrial support is possible but also what the general conditions are under which it arises. We assemble the largest data set, to date, of the isotopic composition (d2H, d13C, and d15N) of lake zooplankton and the resources at the base of their associated food webs. In total, our data set spans 559 observations across 147 lakes from the boreal to subtropics. By predicting terrestrial resource support from within-lake and catchment-level characteristics, we found that half of all consumer observations that is, the median were composed of at least 42% terrestrially derived material. In general, terrestrial support of zooplankton was greatest in lakes with large physical and hydrological connections to catchments that were rich in aboveground and belowground organic matter. However, some consumers responded less strongly to terrestrial resources where within-lake production was elevated. Our study shows that multiple mechanisms drive widespread cross-ecosystem support of aquatic consumers across Northern Hemisphere lakes and suggests that changes in terrestrial landscapes will influence ecosystem processes well beyond their boundaries.},
  articleno    = {e1601765},
  author       = {Tanentzap, Andrew J. and Kielstra, Brian W. and Wilkinson, Grace M. and Berggren, Martin and Craig, Nicola and del Giorgio, Paul A. and Grey, Jonathan and Gunn, John M. and Jones, Stuart E. and Karlsson, Jan and Solomon, Christopher T. and Pace, Michael L.},
  issn         = {2375-2548},
  language     = {eng},
  month        = {03},
  number       = {3},
  pages        = {1--1},
  publisher    = {American Association for the Advancement of Science (AAAS)},
  series       = {Science advances},
  title        = {Terrestrial support of lake food webs: Synthesis reveals controls over cross-ecosystem resource use},
  url          = {http://dx.doi.org/10.1126/sciadv.1601765},
  volume       = {3},
  year         = {2017},
}