uid=nceasadmin,o=NCEAS,dc=ecoinformatics,dc=org all cn=knb-prod,o=NCEAS,dc=ecoinformatics,dc=org all cn=esa-moderators,dc=ecoinformatics,dc=org all uid=regetz,o=NCEAS,dc=ecoinformatics,dc=org read write public read NCEAS 10022: Shurin: Comparing trophic structure across ecosystems National Center for Ecological Analysis and Synthesis Just Cebrian University of South Alabama

Dauphin Island Sea Lab 101 Bienville Blvd Dauphin Island Alabama 36528 USA

(251) 861-7568 jcebrian@disl.org Jim Regetz Just Cebrian associatedParty Jonathan Shurin Co-owner Elizabeth Borer Co-owner Bradley Cardinale Co-owner Jacqueline Ngai Co-owner Melinda Smith Co-owner William Fagan Co-owner 2009-12-15 We compiled an unparalleled data set from the literature and other sources that includes measures of aboveground producer biomass, herbivore biomass, and producer nutritional quality expressed as nitrogen and phosphorus content in aboveground producer biomass (i.e. % of producer dry weight) for a broad range of aquatic and terrestrial ecosystems. The data compiled correspond to mean values that integrate the whole ecosystem over at least one year of observations. Associated publication: Cebrian J, Shurin JB, Borer ET, Cardinale BJ, Ngai JT, et al. (2009) Producer Nutritional Quality Controls Ecosystem Trophic Structure. PLoS ONE 4(3): e4929. doi:10.1371/journal.pone.0004929. no restrictions digital 1957 2002 Broad coverage -180.0000 180.0000 90.0000 -90.0000 Just Cebrian University of South Alabama

Dauphin Island Sea Lab 101 Bienville Blvd Dauphin Island Alabama 36528 USA

(251) 861-7568 jcebrian@disl.org

We searched the literature extensively to compile studies that represented a wide range of aquatic (from pelagic to sediment flats to submerged macrophyte beds) and terrestrial (from marshlands to grasslands to forests) systems. Some systems have been studied more than others and were better represented in the literature, but even the values obtained for the less studied systems, albeit not numerous, covered a wide spread. Thus the data set reflects the availability of information in the scientific record.

Broad-based literature search We only included studies that met three conditions. First, the system was not deliberately impacted by human activities and, thus, was mostly representative of natural conditions. Second, since our analysis compares systems, and not populations or individuals, we only considered studies that included all, or at least the most abundant, producers and herbivores in the system. Third, to eliminate any effects of seasonality on our results, we only accepted studies that provided data for an entire year or at least the entire growing season for annual producers. data_references.pdf data_references.pdf 326993 69d24283cf18609b8b5ed7c2effc591f68eb5f66 application/pdf ecogrid://knb/nceas.959.1 uid=nceasadmin,o=NCEAS,dc=ecoinformatics,dc=org all uid=regetz,o=NCEAS,dc=ecoinformatics,dc=org all public read Other Figure 1/1S Data used in Figures 1 and 1S data_Fig1_Fig1S.txt 61842 1 #x0A column #x09 ecogrid://knb/regetz.97.1 reference Abbreviated reference to the study from which data were collected Author(s) and year(s) community type community type community type ecosystem type ecosystem type aquatic aquatic ecosystem terrestrial terrestrial ecosystem PB (gCm-2) Aboveground producer biomass (gCm-2) gramsPerSquareMeter real 0 NPP (gC m-2 y-1) Net aboveground primary productivity gramsPerMeterSquaredPerYear real 0 H (gC m-2 y-1) Plant consumption by herbivores (gC m-2 y-1) gramsPerMeterSquaredPerYear real %NPP consumed Percent of NPP consumed by herbivores dimensionless real 0 100 HB (gC m-2) Herbivore biomass (gC m-2) gramsPerSquareMeter real Nbiomass (%DW) Nitrogen content expressed as % producer dry weight dimensionless real 0 100 Pbiomass (%DW) Phosphorus content expressed as % producer dry weight dimensionless real 0 100 symbol symbol code, used solely for plotting purposes unknown fill fill code, used solely for plotting purposes unknown code code used solely for plotting purposes unknown 563 Figure 2 Data used in Figure 2 data_Fig2.txt 43314 1 #x0A column #x09 ecogrid://knb/regetz.98.1 system <unknown> numeric ID ref reference Author(s) and year(s) <unknown> <unknown> unknown herbivore ID herbivore ID field (1 of 2) usually genus, but not always herbivore ID2 herbivore ID field (2 of 2) usually name, but not always common name common name common name group taxonomic group informal taxonomic grouping Nh Nh (unknown units) dimensionless real N max N max (unknown units) dimensionless real N min N min (unknown units) dimensionless real N SD N SD (unknown units) dimensionless real Ph Ph (unknown units) dimensionless real P max P max (unknown units) dimensionless real P min P min (unknown units) dimensionless real P SD P SD (unknown units) dimensionless real study mean herb N study mean herb N (unknown units) dimensionless real study mean herb P study mean herb P (unknown units) dimensionless real N source N source informal description of information source P source P source informal description of information source notes notes informal notes 271 gramsPerSquareCentimeter