caa a22 4500 445383550 CHVBK 20180317143024.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10021-011-9454-6 doi (NATIONALLICENCE)springer-10.1007/s10021-011-9454-6 Fish Reliance on Littoral-Benthic Resources and the Distribution of Primary Production in Lakes [Elektronische Daten] [M. Vander Zanden, Yvonne Vadeboncoeur, Sudeep Chandra] Pelagic, littoral, and terrestrial resources can all play a role in supporting consumers in lakes. The role of benthic algal-derived food web pathways in lakes is perhaps the least understood because limnologists have historically focused on pelagic (open-water) production and processes. We compiled carbon stable isotope data from 546 fish populations (75 lakes), and used a two end-member mixing model to calculate littoral-benthic reliance for each fish species in each lake. Fish littoral-benthic reliance values were averaged by lake to assess overall fish species benthic reliance for each lake. Lake-specific mean littoral reliance (BRL; fish species not weighted according to production or biomass) averaged 57% and was independent of lake morphological and limnological attributes. For these same lakes, water column nutrients, light, and morphometry data were used to estimate whole-lake benthic algal and phytoplankton primary production. On average, benthic algae comprised 36% of whole-lake primary production (BPf=0.36). BPf and BRL were weakly correlated: BRL tends to be high even in large/deep lakes in which benthic algae is a minor contributor to whole-lake primary production. The high littoral-benthic contribution to individual fish species appears to reflect the high concentration of fish species diversity in the littoral zone. Our work cannot be extrapolated to whole-lake fish production. However, the result is consistent with other work indicating that most fish species inhabit the littoral zone, whereas relatively few exclusively inhabit the pelagic. Our results suggest that it takes less primary production to support a single fish species in the littoral zone than is required to support a species in the pelagic. Springer Science+Business Media, LLC, 2011 benthic nationallicence periphyton nationallicence phytoplankton nationallicence trophic pathways nationallicence energy flow nationallicence primary production nationallicence Vander Zanden M. Center for Limnology, University of Wisconsin-Madison, 680 N. Park Street, 53706, Madison, Wisconsin, USA aut Vadeboncoeur Yvonne Biological Sciences, Wright State University, 3640 Colonel Glenn Hwy, 45435, Dayton, Ohio, USA aut Chandra Sudeep Natural Resources and Environmental Science, University of Nevada, Reno, 1000 Valley Road/MS 186, 89512, Reno, Nevada, USA aut Ecosystems Springer-Verlag 14/6(2011-09-01), 894-903 1432-9840 14:6<894 2011 14 10021 https://doi.org/10.1007/s10021-011-9454-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10021-011-9454-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vander Zanden M. Center for Limnology, University of Wisconsin-Madison, 680 N. Park Street, 53706, Madison, Wisconsin, USA aut NATIONALLICENCE 700 1- Vadeboncoeur Yvonne Biological Sciences, Wright State University, 3640 Colonel Glenn Hwy, 45435, Dayton, Ohio, USA aut NATIONALLICENCE 700 1- Chandra Sudeep Natural Resources and Environmental Science, University of Nevada, Reno, 1000 Valley Road/MS 186, 89512, Reno, Nevada, USA aut NATIONALLICENCE 773 0- Ecosystems Springer-Verlag 14/6(2011-09-01), 894-903 1432-9840 14:6<894 2011 14 10021 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer