# Abundance and recruitment data for Undaria pinnatifida in Brest harbour, France: Model versus field results

James T. Murphy, Marie Voisin, Mark Johnson, Frédérique Viard

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James T. Murphy, Marie Voisin, Mark Johnson, Frédérique Viard. Abundance and recruitment data for Undaria pinnatifida in Brest harbour, France: Model versus field results. Data in Brief, 2016, 7, pp.540-545. 10.1016/j.dib.2016.02.075. hal-01284837v2

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Data in Brief

journal homepage: [www.elsevier.com/locate/dib](https://www.elsevier.com/locate/dib)

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Data Article

# Abundance and recruitment data for *Undaria pinnatifida* in Brest harbour, France: Model versus field results

<figure><img src="image_4.png" /></figure>

CrossMark

James T. Murphy<sup>a,b,*</sup>, Marie Voisin<sup>a</sup>, Mark Johnson<sup>b</sup>, Frédérique Viard<sup>a</sup>

## ARTICLE INFO

**Article history:**

Received 4 February 2016

Received in revised form

16 February 2016

Accepted 27 February 2016

Available online 4 March 2016

**Keywords:**

Macroalgae

Individual-based model

Invasive species

Seaweed

Kelp

Undaria pinnatifida

Recruitment

Abundance

## ABSTRACT

The data presented in this article are related to the research article entitled "A modelling approach to explore the critical environmental parameters influencing the growth and establishment of the invasive seaweed Undaria pinnatifida in Europe" [1]. This article describes raw simulation data output from a novel individual-based model of the invasive kelp species *Undaria pinnatifida*. It also includes field data of monthly abundance and recruitment values for a population of invasive *U. pinnatifida* (in Brest harbour, France) that were used to validate the model. The raw model output and field data are made publicly available in order to enable critical analysis of the model predictions and to inform future modelling efforts of the study species.

© 2016 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license

(http://creativecommons.org/licenses/by/4.0/).

<footnote><sup>a</sup> Sorbonne Universités, UPMC Univ Paris 6, CNRS, UMR 7144, Adaptation & Diversity in Marine Environment Department, Divco Team, Station Biologique de Roscoff, Place Georges Teissier, 29680 Roscoff, France</footnote>

<footnote><sup>b</sup> Marine Environment Research Group, Ryan Institute, National University of Ireland Galway, Galway, Ireland</footnote>
Specifications table

<table><tr><td>Subject area</td><td>Biology</td></tr><tr><td>More specific subject area</td><td>Computational modelling of invasive macroalgae</td></tr><tr><td>Type of data</td><td>Tables</td></tr><tr><td>How data was acquired</td><td>Field survey, Individual-based model</td></tr><tr><td>Data format</td><td>Raw</td></tr><tr><td>Experimental features</td><td>Field data: 64 aluminium panels set-up one metre below the water surface attached to pontoons in harbor setting.</td></tr><tr><td>Data source location</td><td>Brest harbor, Brittany, France.</td></tr><tr><td>Data accessibility</td><td>Data is available with this article</td></tr></table>

Value of the data

* This data facilitates the data collection of other researchers attempting to follow the same technique or to evaluate future methods for analysis of the data.

* There are limited public datasets available on the monthly abundance/recruitment of field populations of *U. pinnatifida* despite their importance for understanding invasion dynamics.

* Environmental parameters included so that the quantitative relationship between the population dynamics and environmental factors can be explored.

* Allows researchers to independently verify the model predictions versus field results.

1. Data

Tables 1–4 display raw model output and field data for populations of *Undaria pinnatifida* growing in a harbour setting. Model results are from simulations carried out using a spatially-explicit, individual-based model of *U. pinnatifida* population dynamics. A description of this model can be

<caption>Table 1</caption>

Raw model output from simulation of *Undaria pinnatifida* population. Abund=No. of sporophyte agents; Recruit=No. of new sporophyte agents (< 1 month old); Gameto=No. of gametophyte agents; Spores=total no. of spores in the environment; Temp=water temperature (°C); Solar=Solar radiation (Megajoules m⁻² h⁻¹); D.L.=day length (day light hours).

<table><thead><tr><th>Month</th><th>Abund</th><th>Recruit</th><th>Gameto</th><th>Spores</th><th>Temp</th><th>Solar</th><th>D.L.</th></tr></thead><tbody><tr><td>1</td><td>0</td><td>0</td><td>4000</td><td>0</td><td>9.73</td><td>0.38</td><td>8.89</td></tr><tr><td>2</td><td>0</td><td>0</td><td>3704</td><td>0</td><td>9.22</td><td>0.65</td><td>10.17</td></tr><tr><td>3</td><td>40</td><td>40</td><td>3263</td><td>0</td><td>9.75</td><td>0.92</td><td>12.06</td></tr><tr><td>4</td><td>192</td><td>178</td><td>2943</td><td>0</td><td>11.12</td><td>1.12</td><td>13.95</td></tr><tr><td>5</td><td>171</td><td>84</td><td>3249</td><td>9.3E+09</td><td>13.15</td><td>1.24</td><td>15.39</td></tr><tr><td>6</td><td>66</td><td>15</td><td>10349</td><td>3.7E+10</td><td>15.35</td><td>1.27</td><td>16.01</td></tr><tr><td>7</td><td>13</td><td>12</td><td>12702</td><td>2.2E+09</td><td>16.89</td><td>1.24</td><td>15.62</td></tr><tr><td>8</td><td>16</td><td>13</td><td>12440</td><td>2.6E+09</td><td>17.54</td><td>1.12</td><td>14.30</td></tr><tr><td>9</td><td>78</td><td>75</td><td>11986</td><td>2.8E+09</td><td>17.05</td><td>0.93</td><td>12.47</td></tr><tr><td>10</td><td>190</td><td>167</td><td>11884</td><td>8.4E+09</td><td>15.59</td><td>0.67</td><td>10.58</td></tr><tr><td>11</td><td>287</td><td>221</td><td>11704</td><td>4.9E+09</td><td>13.46</td><td>0.40</td><td>9.09</td></tr><tr><td>12</td><td>279</td><td>151</td><td>10746</td><td>6.6E+08</td><td>11.39</td><td>0.27</td><td>8.49</td></tr><tr><td>13</td><td>319</td><td>153</td><td>9569</td><td>1.7E+03</td><td>9.78</td><td>0.38</td><td>8.89</td></tr><tr><td>14</td><td>565</td><td>359</td><td>8358</td><td>0</td><td>9.18</td><td>0.65</td><td>10.17</td></tr><tr><td>15</td><td>762</td><td>445</td><td>7329</td><td>0</td><td>9.68</td><td>0.92</td><td>12.06</td></tr><tr><td>16</td><td>859</td><td>421</td><td>6660</td><td>0</td><td>11.20</td><td>1.12</td><td>13.95</td></tr><tr><td>17</td><td>745</td><td>184</td><td>9933</td><td>7.5E+10</td><td>13.20</td><td>1.24</td><td>15.39</td></tr><tr><td>18</td><td>282</td><td>34</td><td>44969</td><td>1.8E+11</td><td>15.25</td><td>1.27</td><td>16.01</td></tr></tbody></table>
<table><caption>**Table 1 (continued)**</caption><thead><tr><th>Month</th><th>Abund</th><th>Recruit</th><th>Gameto</th><th>Spores</th><th>Temp</th><th>Solar</th><th>D.L.</th></tr></thead><tbody><tr><td>19</td><td>26</td><td>22</td><td>50902</td><td>5.2E+09</td><td>16.85</td><td>1.24</td><td>15.62</td></tr><tr><td>20</td><td>78</td><td>75</td><td>48893</td><td>2.9E+09</td><td>17.43</td><td>1.12</td><td>14.30</td></tr><tr><td>21</td><td>204</td><td>189</td><td>47027</td><td>1.3E+10</td><td>16.93</td><td>0.93</td><td>12.47</td></tr><tr><td>22</td><td>595</td><td>545</td><td>44873</td><td>2.0E+10</td><td>15.47</td><td>0.67</td><td>10.58</td></tr><tr><td>23</td><td>1092</td><td>861</td><td>43183</td><td>2.7E+10</td><td>13.46</td><td>0.40</td><td>9.09</td></tr><tr><td>24</td><td>1103</td><td>607</td><td>40653</td><td>2.8E+09</td><td>11.33</td><td>0.27</td><td>8.49</td></tr><tr><td>25</td><td>1212</td><td>568</td><td>36309</td><td>7.6E+08</td><td>9.83</td><td>0.38</td><td>8.89</td></tr><tr><td>26</td><td>2063</td><td>1281</td><td>31735</td><td>0</td><td>9.15</td><td>0.65</td><td>10.17</td></tr><tr><td>27</td><td>2896</td><td>1691</td><td>27677</td><td>0</td><td>9.67</td><td>0.92</td><td>12.06</td></tr><tr><td>28</td><td>3362</td><td>1591</td><td>25387</td><td>6.0E+09</td><td>11.20</td><td>1.12</td><td>13.95</td></tr><tr><td>29</td><td>2790</td><td>603</td><td>36802</td><td>2.9E+11</td><td>13.26</td><td>1.24</td><td>15.39</td></tr><tr><td>30</td><td>1046</td><td>114</td><td>153281</td><td>6.7E+11</td><td>15.38</td><td>1.27</td><td>16.01</td></tr><tr><td>31</td><td>109</td><td>94</td><td>171091</td><td>1.8E+10</td><td>16.94</td><td>1.24</td><td>15.62</td></tr><tr><td>32</td><td>238</td><td>217</td><td>164369</td><td>2.4E+10</td><td>17.42</td><td>1.12</td><td>14.30</td></tr><tr><td>33</td><td>830</td><td>774</td><td>156976</td><td>4.2E+10</td><td>16.96</td><td>0.93</td><td>12.47</td></tr><tr><td>34</td><td>2208</td><td>1979</td><td>149316</td><td>7.5E+10</td><td>15.51</td><td>0.67</td><td>10.58</td></tr><tr><td>35</td><td>3530</td><td>2759</td><td>143625</td><td>7.3E+10</td><td>13.35</td><td>0.40</td><td>9.09</td></tr><tr><td>36</td><td>3621</td><td>1996</td><td>132164</td><td>1.1E+10</td><td>11.31</td><td>0.27</td><td>8.49</td></tr><tr><td>37</td><td>4197</td><td>2045</td><td>117755</td><td>6.0E+08</td><td>9.73</td><td>0.38</td><td>8.89</td></tr><tr><td>38</td><td>7019</td><td>4300</td><td>103070</td><td>0</td><td>9.22</td><td>0.65</td><td>10.17</td></tr><tr><td>39</td><td>9309</td><td>5237</td><td>90333</td><td>6.6E+08</td><td>9.76</td><td>0.92</td><td>12.06</td></tr><tr><td>40</td><td>10645</td><td>4952</td><td>82258</td><td>1.6E+10</td><td>11.19</td><td>1.12</td><td>13.95</td></tr><tr><td>41</td><td>9138</td><td>2114</td><td>110277</td><td>9.4E+11</td><td>13.26</td><td>1.24</td><td>15.39</td></tr><tr><td>42</td><td>3537</td><td>449</td><td>421117</td><td>2.3E+12</td><td>15.40</td><td>1.27</td><td>16.01</td></tr><tr><td>43</td><td>302</td><td>234</td><td>473819</td><td>6.7E+10</td><td>16.89</td><td>1.24</td><td>15.62</td></tr><tr><td>44</td><td>657</td><td>605</td><td>453465</td><td>6.0E+10</td><td>17.41</td><td>1.12</td><td>14.30</td></tr><tr><td>45</td><td>2085</td><td>1917</td><td>429927</td><td>1.3E+11</td><td>16.88</td><td>0.93</td><td>12.47</td></tr><tr><td>46</td><td>5924</td><td>5332</td><td>405506</td><td>2.1E+11</td><td>15.50</td><td>0.67</td><td>10.58</td></tr><tr><td>47</td><td>9681</td><td>7642</td><td>383861</td><td>2.2E+11</td><td>13.47</td><td>0.40</td><td>9.09</td></tr><tr><td>48</td><td>9653</td><td>5375</td><td>353109</td><td>3.3E+10</td><td>11.35</td><td>0.27</td><td>8.49</td></tr><tr><td>49</td><td>11272</td><td>5569</td><td>313331</td><td>6.8E+06</td><td>9.77</td><td>0.38</td><td>8.89</td></tr><tr><td>50</td><td>19119</td><td>11902</td><td>274492</td><td>6.1E+08</td><td>9.15</td><td>0.65</td><td>10.17</td></tr><tr><td>51</td><td>25300</td><td>14090</td><td>240896</td><td>4.4E+05</td><td>9.66</td><td>0.92</td><td>12.06</td></tr><tr><td>52</td><td>28837</td><td>13260</td><td>219687</td><td>4.0E+10</td><td>11.18</td><td>1.12</td><td>13.95</td></tr><tr><td>53</td><td>24528</td><td>5480</td><td>285372</td><td>2.7E+12</td><td>13.17</td><td>1.24</td><td>15.39</td></tr><tr><td>54</td><td>9328</td><td>1166</td><td>956971</td><td>6.0E+12</td><td>15.26</td><td>1.27</td><td>16.01</td></tr><tr><td>55</td><td>846</td><td>653</td><td>1065121</td><td>2.0E+11</td><td>16.92</td><td>1.24</td><td>15.62</td></tr><tr><td>56</td><td>1649</td><td>1512</td><td>1016441</td><td>1.6E+11</td><td>17.44</td><td>1.12</td><td>14.30</td></tr><tr><td>57</td><td>4820</td><td>4449</td><td>967828</td><td>3.0E+11</td><td>16.94</td><td>0.93</td><td>12.47</td></tr><tr><td>58</td><td>13337</td><td>11938</td><td>903433</td><td>5.2E+11</td><td>15.43</td><td>0.67</td><td>10.58</td></tr></tbody></table>

<caption>**Table 2a**</caption>

Field data: Raw monthly abundance data for *Undaria pinnatifida* from Brest harbour, France 2005/06 [2], along with normalised values (expressed relative to peak in annual abundance). Letters a–e represent five different sets of colour-coded aluminium panels (n=64) installed in Brest harbour, attached to floating pontoons at a depth of 1 m below the water surface.

<table><thead><tr><th rowspan="2">Month</th><th colspan="5">Raw data (Sporophytes m<sup>-2</sup>)</th><th colspan="5">Normalised</th><th rowspan="2">Mean</th><th rowspan="2">SEM</th></tr><tr><th>a</th><th>b</th><th>c</th><th>d</th><th>e</th><th>a</th><th>b</th><th>c</th><th>d</th><th>e</th></tr></thead><tbody><tr><td>Aug 05</td><td>0.00</td><td>1.89</td><td>1.89</td><td>5.48</td><td>0.00</td><td>0.00</td><td>0.03</td><td>0.05</td><td>0.14</td><td>0.00</td><td>0.04</td><td>0.026</td></tr><tr><td>Sep 05</td><td>0.00</td><td>13.26</td><td>0.00</td><td>0.00</td><td>1.10</td><td>0.00</td><td>0.19</td><td>0.00</td><td>0.00</td><td>0.03</td><td>0.04</td><td>0.037</td></tr><tr><td>Oct 05</td><td>0.00</td><td>11.36</td><td>7.58</td><td>1.10</td><td>5.48</td><td>0.00</td><td>0.16</td><td>0.21</td><td>0.03</td><td>0.16</td><td>0.11</td><td>0.041</td></tr><tr><td>Nov 05</td><td>13.89</td><td>26.52</td><td>11.36</td><td>1.10</td><td>7.68</td><td>0.44</td><td>0.38</td><td>0.32</td><td>0.03</td><td>0.22</td><td>0.28</td><td>0.072</td></tr><tr><td>Dec 05</td><td>4.17</td><td>13.26</td><td>22.73</td><td>14.25</td><td>6.58</td><td>0.13</td><td>0.19</td><td>0.63</td><td>0.36</td><td>0.19</td><td>0.30</td><td>0.091</td></tr><tr><td>Jan 06</td><td>9.72</td><td>17.05</td><td>13.26</td><td>19.74</td><td>6.58</td><td>0.31</td><td>0.24</td><td>0.37</td><td>0.50</td><td>0.19</td><td>0.32</td><td>0.054</td></tr><tr><td>Feb 06</td><td>25.00</td><td>37.88</td><td>13.26</td><td>28.51</td><td>9.87</td><td>0.80</td><td>0.54</td><td>0.37</td><td>0.72</td><td>0.28</td><td>0.54</td><td>0.099</td></tr><tr><td>Mar 06</td><td>26.79</td><td>70.08</td><td>18.94</td><td>39.35</td><td>34.72</td><td>0.86</td><td>1.00</td><td>0.53</td><td>1.00</td><td>1.00</td><td>0.88</td><td>0.092</td></tr><tr><td>Apr 06</td><td>31.25</td><td>35.98</td><td>35.98</td><td>25.46</td><td>24.31</td><td>1.00</td><td>0.51</td><td>1.00</td><td>0.65</td><td>0.70</td><td>0.77</td><td>0.098</td></tr><tr><td>May 06</td><td>11.22</td><td>13.26</td><td>15.15</td><td>14.71</td><td>11.03</td><td>0.36</td><td>0.19</td><td>0.42</td><td>0.37</td><td>0.32</td><td>0.33</td><td>0.039</td></tr><tr><td>Jun 06</td><td>4.81</td><td>3.79</td><td>11.36</td><td>9.80</td><td>8.58</td><td>0.15</td><td>0.05</td><td>0.32</td><td>0.25</td><td>0.25</td><td>0.20</td><td>0.045</td></tr><tr><td>Jul 06</td><td>1.60</td><td>0.00</td><td>2.08</td><td>2.45</td><td>0.00</td><td>0.05</td><td>0.00</td><td>0.06</td><td>0.06</td><td>0.00</td><td>0.03</td><td>0.014</td></tr></tbody></table>
<caption>**Table 2b**</caption>

Model Output: Predicted sporophyte abundance. Raw data along with normalised values (expressed relative to peak in annual recruitment). Data from four simulated growth seasons (a–d).

<table><caption>**Table 3a**</caption><thead><tr><th rowspan="2">Month</th><th colspan="4">Raw data (Sporophytes m<sup>-2</sup>)</th><th colspan="4">Normalised</th><th rowspan="2">Mean</th><th rowspan="2">SEM</th></tr><tr><th>a</th><th>b</th><th>c</th><th>d</th><th>a</th><th>b</th><th>c</th><th>d</th></tr></thead><tbody><tr><td>Aug 05</td><td>6</td><td>36</td><td>214</td><td>518</td><td>0.02</td><td>0.02</td><td>0.03</td><td>0.02</td><td>0.02</td><td>0.003</td></tr><tr><td>Sep 05</td><td>23</td><td>138</td><td>689</td><td>2335</td><td>0.07</td><td>0.08</td><td>0.10</td><td>0.09</td><td>0.09</td><td>0.006</td></tr><tr><td>Oct 05</td><td>75</td><td>345</td><td>1815</td><td>5622</td><td>0.23</td><td>0.20</td><td>0.25</td><td>0.22</td><td>0.23</td><td>0.010</td></tr><tr><td>Nov 05</td><td>123</td><td>579</td><td>2561</td><td>7959</td><td>0.37</td><td>0.34</td><td>0.36</td><td>0.32</td><td>0.35</td><td>0.012</td></tr><tr><td>Dec 05</td><td>120</td><td>538</td><td>2332</td><td>7544</td><td>0.36</td><td>0.32</td><td>0.32</td><td>0.30</td><td>0.33</td><td>0.013</td></tr><tr><td>Jan 06</td><td>136</td><td>632</td><td>2431</td><td>7814</td><td>0.41</td><td>0.37</td><td>0.34</td><td>0.31</td><td>0.36</td><td>0.022</td></tr><tr><td>Feb 06</td><td>259</td><td>1231</td><td>4738</td><td>14176</td><td>0.79</td><td>0.73</td><td>0.66</td><td>0.57</td><td>0.69</td><td>0.048</td></tr><tr><td>Mar 06</td><td>316</td><td>1476</td><td>6245</td><td>22518</td><td>0.96</td><td>0.87</td><td>0.87</td><td>0.90</td><td>0.90</td><td>0.021</td></tr><tr><td>Apr 06</td><td>329</td><td>1689</td><td>7183</td><td>25040</td><td>1.00</td><td>1.00</td><td>1.00</td><td>1.00</td><td>1.00</td><td>0.000</td></tr><tr><td>May 06</td><td>283</td><td>1354</td><td>6067</td><td>19012</td><td>0.86</td><td>0.80</td><td>0.84</td><td>0.76</td><td>0.82</td><td>0.023</td></tr><tr><td>Jun 06</td><td>116</td><td>481</td><td>3480</td><td>5464</td><td>0.35</td><td>0.28</td><td>0.48</td><td>0.22</td><td>0.34</td><td>0.057</td></tr><tr><td>Jul 06</td><td>13</td><td>75</td><td>225</td><td></td><td>0.04</td><td>0.04</td><td>0.03</td><td></td><td>0.04</td><td>0.004</td></tr></tbody></table>

Field data: Raw monthly recruitment values for *Undaria pinnatifida* from Brest harbour, France 2005/06 [2], along with normalised values (expressed relative to peak in annual recruitment). Letters (a-e) represent five different sets of colour-coded aluminium panels (n=64) installed in Brest harbour, attached to floating pontoons at a depth of 1 m below the water surface.

<table><caption>**Table 3b**</caption><thead><tr><th rowspan="2">Month</th><th colspan="5">Raw Data (Recruits m<sup>-2</sup>)</th><th colspan="5">Normalised</th><th rowspan="2">Mean</th><th rowspan="2">SEM</th></tr><tr><th>a</th><th>b</th><th>c</th><th>d</th><th>e</th><th>a</th><th>b</th><th>c</th><th>d</th><th>e</th></tr></thead><tbody><tr><td>Aug 05</td><td>0.00</td><td>1.89</td><td>1.89</td><td>4.39</td><td>0.00</td><td>0.00</td><td>0.06</td><td>0.10</td><td>0.22</td><td>0.00</td><td>0.08</td><td>0.041</td></tr><tr><td>Sep 05</td><td>0.00</td><td>9.47</td><td>0.00</td><td>0.00</td><td>1.10</td><td>0.00</td><td>0.29</td><td>0.00</td><td>0.00</td><td>0.07</td><td>0.07</td><td>0.057</td></tr><tr><td>Oct 05</td><td>0.00</td><td>9.47</td><td>3.79</td><td>1.10</td><td>5.48</td><td>0.00</td><td>0.29</td><td>0.20</td><td>0.06</td><td>0.36</td><td>0.18</td><td>0.069</td></tr><tr><td>Nov 05</td><td>2.78</td><td>11.36</td><td>5.68</td><td>1.10</td><td>4.39</td><td>0.11</td><td>0.35</td><td>0.30</td><td>0.06</td><td>0.29</td><td>0.22</td><td>0.058</td></tr><tr><td>Dec 05</td><td>1.39</td><td>5.68</td><td>3.79</td><td>5.48</td><td>3.29</td><td>0.05</td><td>0.18</td><td>0.20</td><td>0.28</td><td>0.22</td><td>0.19</td><td>0.037</td></tr><tr><td>Jan 06</td><td>1.39</td><td>11.36</td><td>1.89</td><td>5.48</td><td>5.48</td><td>0.05</td><td>0.35</td><td>0.10</td><td>0.28</td><td>0.36</td><td>0.23</td><td>0.064</td></tr><tr><td>Feb 06</td><td>6.94</td><td>11.36</td><td>3.79</td><td>15.35</td><td>6.58</td><td>0.27</td><td>0.35</td><td>0.20</td><td>0.78</td><td>0.44</td><td>0.41</td><td>0.101</td></tr><tr><td>Mar 06</td><td>17.86</td><td>32.20</td><td>5.68</td><td>16.20</td><td>15.05</td><td>0.71</td><td>1.00</td><td>0.30</td><td>0.82</td><td>1.00</td><td>0.77</td><td>0.129</td></tr><tr><td>Apr 06</td><td>25.30</td><td>20.83</td><td>18.94</td><td>19.68</td><td>9.26</td><td>1.00</td><td>0.65</td><td>1.00</td><td>1.00</td><td>0.62</td><td>0.85</td><td>0.090</td></tr><tr><td>May 06</td><td>6.41</td><td>7.58</td><td>7.58</td><td>7.35</td><td>7.35</td><td>0.25</td><td>0.24</td><td>0.40</td><td>0.37</td><td>0.49</td><td>0.35</td><td>0.047</td></tr><tr><td>Jun 06</td><td>1.60</td><td>1.89</td><td>3.79</td><td>2.45</td><td>4.90</td><td>0.06</td><td>0.06</td><td>0.20</td><td>0.12</td><td>0.33</td><td>0.15</td><td>0.050</td></tr><tr><td>Jul 06</td><td>0.00</td><td>0.00</td><td>2.08</td><td>0.00</td><td>0.00</td><td>0.00</td><td>0.00</td><td>0.11</td><td>0.00</td><td>0.00</td><td>0.02</td><td>0.022</td></tr></tbody></table>

Model Output: Predicted number of recruits (sporophyte agent > 5 cm in length and < 1 month old). Raw data and normalised values (expressed relative to peak in annual recruitment). Data from four simulated growth seasons (a–d).

<table><thead><tr><th rowspan="2">Month</th><th colspan="4">Raw data (Recruits m<sup>-2</sup>)</th><th colspan="4">Normalised</th><th rowspan="2">Mean</th><th rowspan="2">SEM</th></tr><tr><th>a</th><th>b</th><th>c</th><th>d</th><th>a</th><th>b</th><th>c</th><th>d</th></tr></thead><tbody><tr><td>Aug 05</td><td>19</td><td>52</td><td>211</td><td>476</td><td>0.09</td><td>0.05</td><td>0.05</td><td>0.03</td><td>0.05</td><td>0.011</td></tr><tr><td>Sep 05</td><td>33</td><td>156</td><td>741</td><td>2130</td><td>0.15</td><td>0.15</td><td>0.18</td><td>0.15</td><td>0.16</td><td>0.008</td></tr><tr><td>Oct 05</td><td>71</td><td>381</td><td>1765</td><td>4819</td><td>0.32</td><td>0.36</td><td>0.43</td><td>0.34</td><td>0.36</td><td>0.023</td></tr><tr><td>Nov 05</td><td>112</td><td>556</td><td>2164</td><td>6062</td><td>0.51</td><td>0.52</td><td>0.52</td><td>0.42</td><td>0.49</td><td>0.023</td></tr><tr><td>Dec 05</td><td>85</td><td>416</td><td>1371</td><td>4496</td><td>0.38</td><td>0.39</td><td>0.33</td><td>0.32</td><td>0.36</td><td>0.019</td></tr><tr><td>Jan 06</td><td>76</td><td>395</td><td>1275</td><td>3907</td><td>0.34</td><td>0.37</td><td>0.31</td><td>0.27</td><td>0.32</td><td>0.021</td></tr><tr><td>Feb 06</td><td>220</td><td>975</td><td>3394</td><td>9262</td><td>1.00</td><td>0.91</td><td>0.82</td><td>0.65</td><td>0.84</td><td>0.074</td></tr><tr><td>Mar 06</td><td>221</td><td>1068</td><td>3916</td><td>14265</td><td>1.00</td><td>1.00</td><td>0.95</td><td>1.00</td><td>0.99</td><td>0.013</td></tr><tr><td>Apr 06</td><td>215</td><td>1003</td><td>4129</td><td>12759</td><td>0.97</td><td>0.94</td><td>1.00</td><td>0.89</td><td>0.95</td><td>0.023</td></tr><tr><td>May 06</td><td>86</td><td>387</td><td>1914</td><td>4898</td><td>0.39</td><td>0.36</td><td>0.46</td><td>0.34</td><td>0.39</td><td>0.026</td></tr><tr><td>Jun 06</td><td>19</td><td>83</td><td>334</td><td>1175</td><td>0.09</td><td>0.08</td><td>0.08</td><td>0.08</td><td>0.08</td><td>0.002</td></tr><tr><td>Jul 06</td><td>12</td><td>105</td><td>168</td><td>781</td><td>0.05</td><td>0.10</td><td>0.04</td><td>0.05</td><td>0.06</td><td>0.014</td></tr></tbody></table>
<caption>**Table 4**</caption>

Time-lagged relationship between water temperature (2 months prior to recruitment) and appearance of *Undaria pinnatifida* recruits. Field results from Brest harbour, France 2005/2006 [2].

<table><thead><tr><th colspan="2">Field results</th><th colspan="2">Model predictions</th></tr><tr><th>Temperature (°C)</th><th>Rel. recruitment</th><th>Temperature (°C)</th><th>Rel. recruitment</th></tr></thead><tbody><tr><td>15.55556</td><td>0</td><td>8.53486</td><td>0.46355</td></tr><tr><td>16.8254</td><td>0</td><td>8.61046</td><td>1</td></tr><tr><td>16.24339</td><td>0</td><td>8.99722</td><td>0.38914</td></tr><tr><td>16.56085</td><td>0.109804</td><td>9.09356</td><td>0.894427</td></tr><tr><td>15.50265</td><td>0.054902</td><td>9.10606</td><td>1</td></tr><tr><td>13.38624</td><td>0.054902</td><td>9.46605</td><td>1</td></tr><tr><td>10.68783</td><td>0.27451</td><td>9.50739</td><td>0.36236</td></tr><tr><td>9.550265</td><td>0.705882</td><td>9.50883</td><td>0.4125</td></tr><tr><td>8.597884</td><td>1</td><td>9.56146</td><td>0.948414</td></tr><tr><td>8.518519</td><td>0.253394</td><td>9.75142</td><td>0.939139</td></tr><tr><td>10.13228</td><td>0.063348</td><td>10.0466</td><td>0.972851</td></tr><tr><td>12.59259</td><td>0</td><td>10.169</td><td>0.080891</td></tr><tr><td>15.55556</td><td>0.058824</td><td>10.2278</td><td>0.343358</td></tr><tr><td>16.8254</td><td>0.294118</td><td>10.3061</td><td>1</td></tr><tr><td>16.24339</td><td>0.294118</td><td>10.3095</td><td>0.4375</td></tr><tr><td>16.56085</td><td>0.352941</td><td>10.5467</td><td>0.085973</td></tr><tr><td>15.50265</td><td>0.176471</td><td>10.5475</td><td>1</td></tr><tr><td>13.38624</td><td>0.352941</td><td>10.7031</td><td>0.821991</td></tr><tr><td>10.68783</td><td>0.352941</td><td>10.7978</td><td>0.995475</td></tr><tr><td>9.550265</td><td>1</td><td>11.3494</td><td>0.912921</td></tr><tr><td>8.597884</td><td>0.647059</td><td>11.3703</td><td>0.077715</td></tr><tr><td>8.518519</td><td>0.235294</td><td>11.7769</td><td>0.075</td></tr><tr><td>10.13228</td><td>0.058824</td><td>11.8359</td><td>0.082369</td></tr><tr><td>12.59259</td><td>0</td><td>12.5988</td><td>0.040688</td></tr><tr><td>15.55556</td><td>0.1</td><td>12.675</td><td>0.649281</td></tr><tr><td>16.8254</td><td>0</td><td>12.8818</td><td>0.054299</td></tr><tr><td>16.24339</td><td>0.2</td><td>12.8941</td><td>0.343891</td></tr><tr><td>16.56085</td><td>0.3</td><td>13.1087</td><td>0.098315</td></tr><tr><td>15.50265</td><td>0.2</td><td>13.2682</td><td>0.36985</td></tr><tr><td>13.38624</td><td>0.1</td><td>13.3292</td><td>0.308791</td></tr><tr><td>10.68783</td><td>0.2</td><td>13.3819</td><td>0.025</td></tr><tr><td>9.550265</td><td>0.3</td><td>13.4321</td><td>0.054749</td></tr><tr><td>8.597884</td><td>1</td><td>14.9062</td><td>0.273887</td></tr><tr><td>8.518519</td><td>0.4</td><td>15.12</td><td>0.384615</td></tr><tr><td>10.13228</td><td>0.2</td><td>15.2796</td><td>0.389513</td></tr><tr><td>12.59259</td><td>0.11</td><td>15.3819</td><td>0.033368</td></tr><tr><td>15.55556</td><td>0.22291</td><td>15.5398</td><td>0.051102</td></tr><tr><td>16.8254</td><td>0</td><td>15.6025</td><td>0.332042</td></tr><tr><td>16.24339</td><td>0.055728</td><td>15.798</td><td>0.048689</td></tr><tr><td>16.56085</td><td>0.055728</td><td>15.8213</td><td>0.085973</td></tr><tr><td>15.50265</td><td>0.278638</td><td>15.9455</td><td>0.098423</td></tr><tr><td>13.38624</td><td>0.278638</td><td>16.0195</td><td>0.146067</td></tr><tr><td>10.68783</td><td>0.780186</td><td>16.2086</td><td>0.427464</td></tr><tr><td>9.550265</td><td>0.823529</td><td>16.3575</td><td>0.33782</td></tr><tr><td>8.597884</td><td>1</td><td>16.388</td><td>0.315177</td></tr><tr><td>8.518519</td><td>0.373702</td><td>16.6228</td><td>0.524098</td></tr><tr><td>10.13228</td><td>0.124567</td><td>16.8302</td><td>0.179462</td></tr><tr><td>12.59259</td><td>0</td><td>16.9061</td><td>0.424956</td></tr><tr><td>15.55556</td><td>0</td><td>17.0483</td><td>0.149321</td></tr><tr><td>16.8254</td><td>0.072874</td><td>17.1102</td><td>0.356742</td></tr><tr><td>16.24339</td><td>0.364372</td><td>17.2186</td><td>0.149317</td></tr><tr><td>16.56085</td><td>0.291498</td><td>17.2403</td><td>0.520599</td></tr><tr><td>15.50265</td><td>0.218623</td><td>17.2976</td><td>0.506787</td></tr><tr><td>13.38624</td><td>0.364372</td><td>18.0803</td><td>0.321267</td></tr><tr><td>10.68783</td><td>0.437247</td><td></td><td></td></tr><tr><td>9.550265</td><td>1</td><td></td><td></td></tr><tr><td>8.597884</td><td>0.615385</td><td></td><td></td></tr></tbody></table>
<table><caption>**Table 4 (continued)**</caption><thead><tr><th colspan="2">Field results</th><th colspan="2">Model predictions</th></tr><tr><th>Temperature (°C)</th><th>Rel. recruitment</th><th>Temperature (°C)</th><th>Rel. recruitment</th></tr></thead><tbody><tr><td>8.518519</td><td>0.488688</td><td></td><td></td></tr><tr><td>10.13228</td><td>0.325792</td><td></td><td></td></tr><tr><td>12.59259</td><td>0</td><td></td><td></td></tr></tbody></table>

found in the associated research article [1]. Field data are from populations of invasive *U. pinnatifida* growing in Brest harbour, France, which were surveyed during 2005 and 2006 [2].

## 2. Experimental design, materials and methods

Field data was collected from the port of Brest in France during the 2005/06 growing season: during this field experiment, 64 aluminium panels were set-up one metre below the surface, a depth optimal for the recruitment of the *U. pinnatifida*, and the settlement and length of each individual was recorded every month.

Simulations were carried out using an individual-based model with environmental parameters (light, temperature and day length) representative of Brest harbour, France. Surface water temperature data for the port of Brest (2003–06) were obtained from a SOMLIT (Service d'Observation en Milieu Littoral, INSU-CNRS, Brest) buoy situated a few hundred metres from the marina [2,3]. Mean global solar irradiance data for the region were obtained using the CalSol online application (Institut National de L'Energie Solaire, CEA-CNRS) [4].

## Acknowledgements

This research is supported by an Irish Research Council ELEVATE international career development fellowship, co-funded by Marie Curie Actions under the European Union's Seventh Framework Programme. The data presented here that were collected in Brest were obtained as part of the PhD thesis of Marie Voisin who benefitted from a Ph.D. fellowship ("Renouvellement des Compétences" Program) from the Region Bretagne. MV and FV are thankful to the many people from the Department AD2M of the Station Biologique de Roscoff who provided help for the surveys carried out in the field.

## Appendix A. Supplementary material

Supplementary data associated with this article can be found in the online version at http://dx.doi.org/10.1016/j.dib.2016.02.075.

## References

[1] J.T. Murphy, M.P. Johnson, F. Viard, A modelling approach to explore the critical environmental parameters influencing the growth and establishment of the invasive seaweed Undaria pinnatifida in Europe, J. Theor. Biol. (2016), http://dx.doi.org/10.1016/j.jtbi.2016.01.038.

[2] Voisin, M., Les processus d'invasions biologiques en milieu côtier marin: le cas de l'algue brune Undaria pinnatifida, cultivée et introduite à l'échelle mondiale (Ph.D. diss.), 2007, Paris 6: France.

[3] INSU-CNRS, SOMLIT-Service d'Observation en Milieu Littoral, Institut National des Sciences de l'Univers (CNRS), France, 2015.

[4] INES, *Logiciel CALSOL*, Institut National de L'Energie Solaire: France, 2015.