DOI: 10.5061/dryad.m63xsj4d3
title: Data and R code from: Resource quantity and quality co-limit consumer production in forest streams

description: This dataset includes estimates of annual secondary production (mg
 ash-free dry mass/m2/yr) of macroinvertebrate communities (total
 community=Tot, primary consumers=Prim, and leaf-shredding
 invertebrates=Shred) in several small forest streams located at the
 Coweeta Hydrologic Laboratory in North Carolina, USA. Accompanying each
 estimate of annual secondary production are estimates of mean annual
 discharge (Q, L/s), soluble reactive phosphorus (SRP, μg/L) and dissolved
 inorganic nitrogen (DIN, μg/L) concentrations and mean annual leaf litter
 standing stock (avgLeaf.core, g ash-free dry mass/m2). Additionally
 estimates of average %N (N) and %P (P) of leaf litter are included for
 each stream and year of study. These data are from three separate,
 multi-year projects aimed at assessing the impacts of experimental
 whole-stream N and P additions on stream communities and ecosystems
 conducted between 1999-2001, 2003-2004, 2010-2013.
description: This datasets compiles data from three previously published
 studies of the effects of experimental N and P fertilization in small,
 forest streams at the Coweeta Hydrologic Laboratory in Macon County, North
 Carolina, USA. Associated methods can be found in the original papers
 (citations below). Cross, W. F., J. B. Wallace, A. D.
 Rosemond, and S. L. Eggert. 2006. Whole-system nutrient enrichment
 increases secondary production in a detritus-based ecosystem. Ecology
 87:1556-1565.  Davis, J. M., A. D. Rosemond, S. L.
 Eggert, W. F. Cross, and J. B. Wallace. 2010. Long-term nutrient
 enrichment decouples predator and prey production. PNAS
 107:121-126.  Demi, L. M., J. P. Benstead, A. D.
 Rosemond, and J. C. Maerz. 2018. Litter P content drives consumer
 production in detritus-based streams spanning an experimental N:P
 gradient. Ecology 99:347-359. 
description: # Colimitation of secondary production - full dataset
 [https://doi.org/10.5061/dryad.m63xsj4d3](https://doi.org/10.5061/dryad.m63xsj4d3) ## Description of the data and file structure These data are compiled from three separate whole-stream nitrogen and phosphorus enrichment experiments conducted in small, forest streams at the Coweeta Hydrologic Laboratory in Macon, County, North Carolina, USA, and include data from 7 different streams studied over periods ranging from 3-5 years for each stream. These studies examined the effects of variation in nitrogen and phosphorus availability on the structure and function of detritus-based stream ecosystems. The original studies and data are presented across several previously published papers with full citations provided under Access information below. ### Files and variables #### File: ECY24-0615\_RawData.xlsx **Description:** Location: All data are collected from streams located within the Coweeta Hydrologic Laboratory in Macon County, North Carolina, USA. Streams 6, 7, 8, 9, and 10 are 1st and 2nd order tributaries within the Dryman Fork Watershed, while streams W53 and W54 are located within the Shope Fork Watershed; Timeframe: These data come from 3 separate N and P enrichment experiments, the first beginning in 1999 and ending in 2002 (W53 and W54), the second beginning in 2003 and ending in 2005 (W53 and W54) and the last beginning in 2010 and ending in 2013 (6, 7, 8, 9, 10). General overview: The data presented here from the 3 whole-stream N and P enrichment experiments were previously published in three separate manuscripts: Cross et al. 2006 (1999-2002), Davis et al. 2010 (2003-2005) and Demi et al. 2018 (2010-2013). All methods relative to data collection can be found in the original papers. Some variables (listed below) were not collected during the study by Davis et al. 2010. These missing values are indicated as Not Available (NA) in the data file. ##### Variables * Stream: Unique stream IDs * StartYear: Calender year underwhich data collection began for estimating annual means and rates for each stream * Treatment: Indicates whether the stream was sampled under "Reference" (non-N and P fertilized) or under experimental "N and P enriched" conditions. Descriptions of enrichment concentrations and delivery apparati are described in the original papers. * Project: Corresponds to the specific N and P enrichment project each data were collected during * Proj: Indicates the corresponding publication for each N and P enrichment project (full citations below) * Prod: Indicates habitat from which estimates of macroinvertebrate secondary production were estimated. Mixed substrate indicates substrate composed primarily of mixed sand, gravel and cobble. * Shred: Estimates of annual secondary production of leaf-shredding macroinvertebrates, in mg AFDM/m^2/yr * Prim: Estimates of annual secondary production of all primary consumer macroinvertebrates, in mg AFDM/m^2/yr * Tot: Estimates of total macroinvertebrate community secondary production, in mg AFDM/m^2/yr * SRP: Mean soluble reactive phosphorus concentrations from biweekly or monthly water samples, in ug/L * DIN: Mean dissolved inorganic nitrogen concentrations from biweekly or monthly water samples, in ug/L * Q: Mean annual discharge, in L/s * N: Mean %N of leaf litter, by dry mass, from monthly leaf litter samples * P: Mean %P of leaf litter, by dry mass, from monthly leaf litter samples * avgLeaf.core: Mean standing stock of leaf litter, in g AFDM/m^2, from monthly benthic core samples ## Code/software Two R script files are included. Each can be viewed using a standard .txt editing application or using the R statistical environment platform. ## Access information Data was derived from the following sources: * Cross, W. F., J. B. Wallace, A. D. Rosemond, and S. L. Eggert. 2006. Whole-system nutrient enrichment increases secondary production in a detritus-based ecosystem. Ecology 87:1556-1565.  Cross, W. F., J. P. Benstead, A. D. Rosemond, and J. Bruce Wallace. 2003. Consumer‐resource stoichiometry in detritus‐based streams. Ecology Letters 6:721-732.  Davis, J. M., A. D. Rosemond, S. L. Eggert, W. F. Cross, and J. B. Wallace. 2010. Long-term nutrient enrichment decouples predator and prey production. PNAS 107:121-126.  Demi, L. M., J. P. Benstead, A. D. Rosemond, and J. C. Maerz. 2018. Litter P content drives consumer production in detritus-based streams spanning an experimental N:P gradient. Ecology 99:347-359.