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Pygospio elegans size distributions - The 5th setiger widths of P. elegans for the weed and non-weed plots after 4 weeks and 20 weeks are given in Figures 5.5(i) and (ii) respectively. The results of the X 2 goodness of fit and Kolmogorov-Smimov tests are given in Table 5.2. 5th setiger X2 goodness of fit K-S width (mm) 0.30 0.33-37 0.40-43 0.47-50 0.53 p value p value 4 Weeks 77.1% 1.2% 7.4% 9.0% 5.2%
After 20 weeks, there was no significant difference between the P. elegans size- frequencies in the weed and non-weed plots although this was probably due to the low abundances in the non-weed plots preventing a definite size distribution being ascertained. c.) 80 — (i) 4 Weeks 70 — 60 — 50 — 40 — • 30 — L) 4.9 LL. 20 — 10 — 0 1 1 1I 120 — 100 — 80 — 60 — 40 — 20 — 0 r-- o en r-- N 6 6 6 -11 N --, 6 1 0 en r- N N N 6 6 6 1 1- r- o • •zr. o I I 1 1 1 r- o . o 1 Fifth setiger width (mm) (ii) 20 Weeks en • Non-weed plots n = 297 El Weed plots n= 609 • Non-weed plots n = 55 El Weed plots n = 940 1 I Elm o en 6 en en 6 r- en 6 • 1111 o en
- Page 86 and 87: Reproductive activity of Pygospio e
- Page 88 and 89: P. elegans larvae at Drum Sands hav
- Page 90 and 91: Pygospio elegans showed great seaso
- Page 92 and 93: Previous studies have produced simi
- Page 94 and 95: The sole reliance on a planktonic m
- Page 96 and 97: abundance are highly seasonal, were
- Page 98 and 99: CHAPTER 4 THE EFFECTS OF MACROALGAL
- Page 100 and 101: studies may have been completely di
- Page 102 and 103: METHODS Study site - The exact posi
- Page 104 and 105: 1 C N W 4----111" 1.5m 2 NW C Contr
- Page 106 and 107: sediment sampling, together with re
- Page 108 and 109: RESULTS Species abundances - The me
- Page 110 and 111: ; 15 35 — 30 — 25 — 10 — 5
- Page 112 and 113: statistical difference from net plo
- Page 114 and 115: Pygospio elegans size distribution
- Page 116 and 117: used, approximately equivalent to t
- Page 118 and 119: artefacts associated with the metho
- Page 120 and 121: present in high numbers around sewa
- Page 122 and 123: lack, hydrogen sulphide-smelling se
- Page 124 and 125: CHAPTER 5 THE EFFECTS OF MACROALGAL
- Page 126 and 127: METHODS Survey design - During late
- Page 128 and 129: The sediments could not be sampled
- Page 130 and 131: RESULTS Species abundances - Table
- Page 132 and 133: 90 — 80 — "-e-' 70 — 60 — 4
- Page 134 and 135: 35 — *** 30 25 — 1.) = .-c‘l
- Page 138 and 139: which is difficult to compare with
- Page 140 and 141: eason why some invertebrates showed
- Page 142 and 143: This study did not set out to expli
- Page 144 and 145: This reliance upon the early establ
- Page 146 and 147: CHAPTER 6 INITIAL COLONISATION OF D
- Page 148 and 149: esulting community at any stage of
- Page 150 and 151: ambient sediment had been removed.
- Page 152 and 153: emoved since they were the only tax
- Page 154 and 155: All statistics were performed using
- Page 156 and 157: RESULTS Univariate analysis of spec
- Page 158 and 159: 3.5 3 5 2 11 5 1 0.5 0 40 35 Ca 30
- Page 160 and 161: of non-patch areas (Figure 6.3(vi))
- Page 162 and 163: the individuals colonising patch az
- Page 164 and 165: Multivariate analysis of community
- Page 166 and 167: Month Sample statistic (Global R) N
- Page 168 and 169: 2NP 3NP 4NP .•,, 6NP 5NP 6P 1NP i
- Page 170 and 171: Figure 6.8: Two-dimensional MDS ord
- Page 172 and 173: - - 5P ... 4P . 6P • .‘2NP 1NP
- Page 174 and 175: I 50. 1 60. 70. 80. 90. 100. BRAY-C
- Page 176 and 177: 'P2-AZ P3-AZ N2-AZ .- - - " .„ ..
- Page 178 and 179: o • o -o + 350 — 300 = 250 7 g
- Page 180 and 181: The importance of the ambient commu
- Page 182 and 183: In April, when P. elegans larval av
- Page 184 and 185: not only for errant polychaetes, bu
After 20 weeks, there was no significant difference between the P. elegans size-<br />
frequencies in the weed and non-weed plots although this was probably due to the low<br />
abundances in the non-weed plots preventing a definite size distribution being<br />
ascertained.<br />
c.)<br />
80 — (i) 4 Weeks<br />
70 —<br />
60 —<br />
50 —<br />
40 —<br />
• 30 —<br />
L)<br />
4.9<br />
LL.<br />
20 —<br />
10 —<br />
0 1 1 1I<br />
120 —<br />
100 —<br />
80 —<br />
60 —<br />
40 —<br />
20 —<br />
0<br />
r-- o en r--<br />
N<br />
6 6 6<br />
-11<br />
N<br />
--,<br />
6<br />
1<br />
0 en r-<br />
N N N<br />
6 6 6<br />
1 1-<br />
r- o<br />
• •zr. o<br />
I I<br />
1 1 1<br />
r- o<br />
. o<br />
1<br />
Fifth setiger width (mm)<br />
(ii) 20 Weeks<br />
en<br />
• Non-weed plots n = 297<br />
El Weed plots n= 609<br />
• Non-weed plots n = 55<br />
El Weed plots n = 940<br />
1<br />
I Elm<br />
o<br />
en<br />
6<br />
en<br />
en<br />
6<br />
r-<br />
en<br />
6<br />
• 1111<br />
o en<br />
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