The summarized data set used in analyses and presented in Table 1 and Fig. 2, data for the original ordination of the 473 streams in Fig. 1, the site × species matrix of periphyton densities, and the site × species matrix of periphyton productivities on the sampling tiles.
Ecological Archives E086-037-S1.
Authors
File list (downloads)
Description
Bradley J. Cardinale
University of California - Santa Barbara
Department of Ecology, Evolution and Marine Biology
Santa Barbara, CA 93106
cardinale@lifesci.ucsb.edu
Margaret A. Palmer
University of Maryland
Department of Entomology
College Park, MD 20742
mpalmer@umd.eduAnthony R. Ives
University of Wisconsin - Madison
Department of Zoology
Madison, WI 53706
arives@wisc.eduShane S. Brooks
Monash University
Department of Ecology and Evolution
Melbourne, Australia
Data_files.zip -- zip file containing the four tab-separated ASCII data files listed below.
Primary_dataset.txt -- the complete data set used in analyses and presented in Table 1 and Fig. 2 of the article.
Ordination_data.txt -- data used to ordinate the 473 streams in Fig. 1.
Species_densities.txt -- a site × species matrix of periphyton densities on sampling tiles (precursor to estimating rates of biomass accrual).
Species_productivities.txt -- a site × species matrix of periphyton productivities (rate of biomass accrual) on the sampling tiles.
The file Data_files.zip contains four tab-separated ASCII data files. Each of these four files is described in detail below:
File 1 = Primary_dataset.txt -- the summarized dataset used in analyses and presented in Table 1 and Fig. 2. Variables by column are:
1 = U.S. Geological Survey (USGS) stream gauging station.
2 = Description of gauging station location.
3 = USGS Hydrologic Unit Code (HUC).
4 = Latitude of gauging station (degrees).
5 = Longitude of gauging station (degrees).
6 = The Environmental Protection Agency's Type III ecoregion (see reference to Omerik and Griffith 1991 in paper). These denote different shaded areas in Fig. 1B of our paper.
7 = Categorical grouping of naturally occurring stream "clusters" where one or more streams in each study group were located within a 48-km radius in the same ecoregion. These denote polygons in Fig. 1B of our paper.
8 = The coefficient of variation of mean daily stream discharge (Q) from 1 October 1989 to 30 September 1999.
9 = The temporal predictability of mean daily discharge, calculated as Colwell's index (see reference to Colwell 1974 in paper)
10 = The coefficient of variation of mean monthly stream discharge (Q) from 1 October 1989 to 30 September 1999.
11 = The temporal predictability of mean monthly discharge, calculated as Colwell's index (see reference to Colwell 1974 in paper)
12 = The mean number of floods per year, with a flood defined as any Q exceeding the 1.67 year recurrence interval.
13 = The temporal predictability of floods, calculated as Colwell's index (see reference to Colwell 1974 in paper)
14 = Factor scores from PC1 used to ordinate streams in Fig. 1A.
15 = Factor scores from PC2 used to ordinate streams in Fig. 1A.
16 = The study group is the stream disturbance category determined from the ordination of streams by PC1 and PC2 (see Fig. 1A). LD stands for relatively low disturbance streams while HD stands for relatively high disturbance streams.
17 = Day of water year on which periphyton were collected from sampling tiles. Note that the USGS water year begins on 1-October.
18 = The number of days that tiles were incubated in the stream prior to sampling.
19 = Periphyton species richness on sampling tiles, which includes all taxa of Bacillariophyceae, Cyanobacteria, Chlorophyceae, Euglenophyceae, and Pyrrophyta.
20 = Net production of periphyton, taken to be the rate of biomass accumulation on the sampling tiles (micrograms cm2/d) .
21 = The expected productivity of the periphyton assemblage (micrograms cm2/d) determined from the median regional productivity of each taxon (see Eq. 2 in text).
22 = Percent canopy cover above each sampling tile meaured with a densiometer and spatially averaged for the six tiles taken from the stream.
23 = Width of the wetted stream channel (in meters).
24 = Conductivity (microS/cm) of a single stream water sample measured with an Orion QuikChek probe.
25 = Stream drainage area (km2), as reported on the USGS NWISWeb.
26 = Mean invertebrate herbivore biomass (g/m2) in three replicate 900-cm2 Surber samples taken from the same stream riffles in which periphyton sampling tiles were placed.
27 = Watershed export of Total Nitrogen (kg/d) predicted for the hydrologic unit code (HUC) based on the SPARROW modeling program of the USGS (see references to Alexander et al. 1998 and 2004 in text).
28 = Watershed export of Total Phosphorus (kg/d) predicted for the hydrologic unit code (HUC) based on the SPARROW modeling program of the USGS (see references to Alexander et al. 1998 and 2004 in text).
29 = pH of a single stream water sample
30 = Mean water depth (cm) measured directly above the replicate sampling tiles.
31 = Stream water temperature, in degrees Celsius
32 = Water velocity (m/s) measured 3–5 mm above each sampling tile using a Valeport 8005/801 electromagnetic probe. Velocity is the mean of a 25-s time series with data spatially averaged across the replicate tiles collected.
33 = Turbulence, taken to be the standard deviation of velocity for the 25-sec time series.
Cells with missing values are delimited by "."
To verify that the file has downloaded properly, column sums and the number of cells with "." can be compared to the following:
1 n/a 0 2 n/a 0 3 229641202.0000 0 4 3251.7445 0 5 -6505.9230 0 6 5426.0000 0 7 n/a 0 8 137.5400 0 9 41.0980 0 10 71.1720 0 11 43.1750 0 12 103.0780 0 13 55.0940 0 14 -1.6035 0 15 -1.6543 0 16 n/a 0 17 25283.0000 0 18 1240.0000 0 19 2040.0000 0 20 718.9430 0 21 282.5517 0 22 2280.7427 2 23 1883.3592 1 24 25720.0000 1 25 75235.3560 0 26 52329.6000 21 27 861459.9900 0 28 83085.0500 0 29 629.7000 1 30 1952.3167 2 31 1906.0000 1 32 20.2285 11 33 6.2793 19 n/a = not applicable, column is text.
File 2 = Ordination_data.txt -- contains data used to ordinate the 473 streams displayed in Fig. 1. Variables by column are:
1 = U.S. Geological Survey (USGS) stream gauging station.
2 = Description of gauging station location.
3 = Latitude of gauging station (degrees).
4 = Longitude of gauging station (degrees).
5 = The coefficient of variation of mean daily stream discharge (Q) from 1 October 1989 to 30 September 1999.
6 = The temporal predictability of mean daily discharge, calculated as Colwell's index (see reference to Colwell 1974 in paper)
7 = The coefficient of variation of mean monthly stream discharge (Q) from 1 October 1989 to 30 September 1999.
8 = The temporal predictability of mean monthly discharge, calculated as Colwell's index (see reference to Colwell 1974 in paper)
9 = The mean number of floods per year, with a flood defined as any Q exceeding the 1.67 year recurrence interval.
10 = The temporal predictability of floods, calculated as Colwell's index (see reference to Colwell 1974 in paper)
11 = Factor scores from PC1 used to ordinate streams in Fig. 1A.
12 = Factor scores from PC2 used to ordinate streams in Fig. 1A.
To verify that the file has downloaded properly, column sums can be compared to the following:
Column Column sum 1 n/a 2 n/a 3 18203.3702 4 -37238.6292 5 762.3500 6 233.1440 7 405.9920 8 246.9760 9 595.3710 10 313.9390 11 0.0000 12 0.0000 n/a = not applicable, column is text.
File 3 = Species_densities.txt -- a site (rows) by species (columns) matrix of periphyton densities on the sampling tiles (number of individual cells per square cm). Each column has the species ID as the header, with that ID followed by a D = diatom (Bacillariophyceae), CY = Cyanobacteria, CH = Chlorophyceae , EU = Euglenophyceae, or PY = Pyrrophyta.
Cells with a "." indicate the taxon was not found on sampling tiles placed in that site.
To verify that the file has downloaded properly, column sums and the number of cells with "." can be compared to the following:
Column Column sum # cells with "." 1 n/a 0 2 503323 43 3 153 81 4 10581 68 5 6548 82 6 3181505 4 7 34947 76 8 1865 79 9 1993 76 10 42 81 11 936 80 12 71196 61 13 5729 81 14 1491 81 15 5805 78 16 24452 81 17 1807000 1 18 9414 69 19 154 81 20 3301 75 21 1125 82 22 1107664 15 23 27 82 24 1091 82 25 22 82 26 20541 65 27 273 82 28 9941 70 29 47420 61 30 75 82 31 1005133 12 32 395863 24 33 2455 81 34 171644 32 35 473 80 36 28 82 37 93358 54 38 1364 81 39 59940 60 40 52328 80 41 1854 80 42 62 81 43 28 82 44 977 80 45 204 81 46 4010 81 47 722370 9 48 16992 68 49 3555 81 50 128247 65 51 1091 82 52 142 81 53 68376 61 54 18489 72 55 97828 36 56 4288 76 57 28841 81 58 137157 70 59 44437 56 60 634 81 61 8857040 2 62 146026 62 63 2485 80 64 32981 54 65 6663 59 66 3081 78 67 1227 80 68 336564 29 69 1637 82 70 2386 79 71 450559 3 72 534281 10 73 8573 68 74 273 82 75 10988 73 76 54862 61 77 10044 74 78 30082 71 79 93416 37 80 6675 74 81 249 81 82 395 81 83 2182 82 84 1637 82 85 297 81 86 222 81 87 391 79 88 28 82 89 92460 52 90 137145 64 91 606324 12 92 61649 70 93 951319 52 94 6524 74 95 102 82 96 272 82 97 40871 54 98 113 82 99 613 82 100 817 81 101 974 80 102 68 82 103 2022 79 104 1878 76 105 10503 79 106 11254 82 107 135 82 108 17 82 109 2728 82 110 8185 82 111 654 82 112 1688 82 113 4365 81 114 104 81 115 545 82 116 112 82 117 4820 81 118 409 82 119 682 82 120 17205 81 121 14789846 10 122 6384 82 123 12277 82 124 12548 81 125 1091 82 126 1364 82 127 4092 82 128 11162 79 129 115686 71 130 224430 66 131 143919 79 132 2046 82 133 57113 81 134 409 82 135 7639 80 136 19915 79 137 1637 82 138 654 82 139 463 81 140 1693 81 141 375 80 142 181 82 143 74 81 144 1309 82 145 1637 82 146 181 82 147 1695 75 148 142 81 149 4911 74 150 1213 80 151 821 78 152 1566 79 153 1091 82 154 2805 80 155 2291 81 156 11 82 157 327 82 158 10162 78 159 10938 75 160 5689 77 161 20 82 162 40 82 163 40 82 164 1008 80 165 681 81 166 26616 72 167 10060 77 168 4092 82 169 90 82 170 1784 77 171 3 82 172 72438 82 173 61076 78 174 101285 56 175 9638 78 176 545 82 177 47553 75 178 22343 74 179 545 82 180 81 82 181 62006 75 182 91469 76 183 1182586 53 184 818 82 185 3819 79 186 613 82 187 255 82 188 393 82 189 92 81 190 162 81 n/a = not applicable, column is text.
File 4 = Species_productivities.txt -- a site (rows) by species (columns) matrix of periphyton productivities on the sampling tiles (micrograms of biomass accrual cm2/ d). Each column has the species ID as the header, with that ID followed by a D = diatom (Bacillariophyceae), CY = Cyanobacteria, CH = Chlorophyceae , EU = Euglenophyceae, or PY = Pyrrophyta.
Cells with a "." indicate the taxon was not found on sampling tiles placed in that site. To verify that the file has downloaded properly, column sums and the number of cells with "." can be compared to the following:
Column Column sum # cells with "." 1 n/a n/a 2 4.3167 43 3 0.0010 81 4 0.0738 68 5 0.0411 82 6 10.2403 4 7 0.2367 76 8 0.2048 79 9 0.3792 76 10 0.0100 81 11 0.0014 80 12 0.6524 61 13 0.4847 81 14 0.2573 81 15 0.8065 78 16 1.7917 81 17 138.8423 1 18 0.1674 69 19 0.0009 81 20 0.0721 75 21 0.0040 82 22 40.4987 15 23 0.0027 82 24 0.0053 82 25 0.0007 82 26 1.3570 65 27 0.0046 82 28 0.5421 70 29 0.2207 61 30 0.0107 82 31 10.0587 12 32 0.4726 24 33 0.0465 81 34 17.0062 32 35 0.0019 80 36 0.0007 82 37 0.2301 54 38 0.0073 81 39 8.2570 60 40 29.2500 80 41 0.3101 80 42 0.0044 81 43 0.0013 82 44 0.0213 80 45 0.0087 81 46 0.1130 81 47 9.6314 9 48 1.1573 68 49 0.0165 81 50 3.1113 65 51 0.0162 82 52 0.0002 81 53 0.9276 61 54 0.2001 72 55 23.0913 36 56 0.9845 76 57 0.3444 81 58 3.4456 70 59 0.1710 56 60 0.0594 81 61 124.0941 2 62 0.4936 62 63 0.0761 80 64 2.1327 54 65 2.8401 59 66 0.1769 78 67 0.1391 80 68 86.2102 29 69 0.0227 82 70 0.0594 79 71 25.1895 3 72 11.4403 10 73 0.6537 68 74 0.0071 82 75 0.1898 73 76 0.1537 61 77 0.5695 74 78 1.7090 71 79 7.8229 37 80 0.1938 74 81 0.0920 81 82 0.0373 81 83 0.3562 82 84 0.2420 82 85 0.0270 81 86 0.0036 81 87 0.0033 79 88 0.0007 82 89 3.7009 52 90 0.6027 64 91 3.9346 12 92 0.3567 70 93 3.7973 52 94 0.3270 74 95 0.0411 82 96 0.0224 82 97 1.5305 54 98 0.2429 82 99 0.0236 82 100 0.0278 81 101 0.0226 80 102 0.0009 82 103 0.4217 79 104 0.0365 76 105 0.1468 79 106 0.1347 82 107 0.0020 82 108 0.0001 82 109 0.0306 82 110 0.2080 82 111 0.0227 82 112 0.0073 82 113 0.0458 81 114 0.0015 81 115 0.0012 82 116 0.0067 82 117 0.0605 81 118 0.0047 82 119 0.0053 82 120 0.4206 81 121 50.3001 10 122 0.0226 82 123 0.0407 82 124 0.0606 81 125 0.0011 82 126 0.0069 82 127 0.1347 82 128 0.2569 79 129 0.6684 71 130 0.4773 66 131 3.6000 79 132 0.0067 82 133 0.2670 81 134 0.0674 82 135 0.0390 80 136 0.2271 79 137 1.1410 82 138 0.0225 82 139 0.0196 81 140 1.1053 81 141 1.8533 80 142 0.0731 82 143 0.3787 81 144 0.0057 82 145 0.0573 82 146 0.3259 82 147 0.8667 75 148 0.0522 81 149 2.1347 74 150 0.4577 80 151 0.2660 78 152 1.0253 79 153 0.4113 82 154 0.1387 80 155 0.0027 81 156 0.0013 82 157 0.0095 82 158 8.7162 78 159 0.1088 75 160 0.0312 77 161 0.0001 82 162 0.0006 82 163 0.0007 82 164 0.0034 80 165 0.0057 81 166 0.1969 72 167 4.6026 77 168 0.0980 82 169 0.0060 82 170 3.0958 77 171 0.0005 82 172 1.8433 82 173 0.6449 78 174 1.4360 56 175 0.0694 78 176 0.0060 82 177 0.7406 75 178 0.4487 74 179 0.0146 82 180 0.0005 82 181 0.6380 75 182 2.5522 76 183 34.5255 53 184 0.0529 82 185 0.7367 79 186 0.0436 82 187 0.3819 82 188 0.0540 82 189 0.0207 81 190 0.0447 81 n/a = not applicable, column is text.
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