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73 ‘a• el 1.4 (ix) G. duebeni 1.4 0.6 0.2 -0.2 2 3 4 Distance class 1.4 (Xi) % Silt/clay 0.6 0.2 — • ....... p
1.4 (ix) G. dttebeni 1.4 0.6 0.2 -0.2 2 3 4 Distance class 1.4 (Xi) % Silt/clay 0.6 0.2 -0.2 "" ------- • 2 3 4 5 Distance class d 0.6 0.2 Figures 2.10(ix-xiii) : Continued. p -0.2 1.4 • 0.6 Fe, u° 0.2 -0.2 1.4 (xiii) Sorting coefficient -0.2 2 3 4 Distance class 50 (x) % Organic content - - .D------- 2 3 4 Distance class (xii) Md phi 2 3 4 Distance class p
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AN INVESTIGATION INTO THE PROCESSES
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ABSTRACT The spionid polychaete Pyg
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ACKNOWLEDGEMENTS I am indebted to m
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Results. . 65 Size distribution of
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CHAPTER 9. GENERAL DISCUSSION . . 2
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Figure 5.4 Figure 5.5 Figure 6.1 Fi
Page 13 and 14: LIST OF TABLES Table 2.1 Statistica
Page 15 and 16: BACKGROUND CHAPTER 1 INTRODUCTION A
Page 17 and 18: The scales of observation, or the s
Page 19 and 20: systematic sampling design to inves
Page 21 and 22: aised sediment within an otherwise
Page 23 and 24: Fauchald and Jumars (1979) describe
Page 25: Dalmeny House and sewage discharged
Page 28 and 29: E 7— E 6-ac. MHWS MHWN t co 4 —
Page 30 and 31: variance (TTLQV) techniques (see Lu
Page 32 and 33: analysis using Moran's and Geary's
Page 34 and 35: Holme and McIntyre (1984). Percenta
Page 36 and 37: Pattern Analysis - Grid Surveys Sur
Page 38 and 39: 57 64 1=1 0 0 0 0 0 0 0 O 0 0 0 0 0
Page 40 and 41: Maps produced by kriging and other
Page 42 and 43: 200 180 1160 140 100 1-3 80 g 60 c.
Page 44 and 45: 2.5 1.5 0.5 0 3 T (i) % Silt/clay%
Page 46 and 47: v : m pattern Id pattern Ip pattern
Page 48 and 49: " v : m pattern Id pattern Ip patte
Page 50 and 51: The results show that at the smalle
Page 52 and 53: Nephtys hombergii's spatial distrib
Page 54 and 55: (vii) G. duebeni (ix) % Organic con
Page 56 and 57: 8m survey - spatial patterns Figure
Page 58 and 59: (1) P. elegans (iii) L. conchilega
Page 60 and 61: a) Ts 1.4 0.6 u 0.2 -0.2 1.4 'E5 0.
Page 62 and 63: 200m 150m 100m 50m (ix) C. edule 56
Page 66 and 67: DISCUSSION The main aims of this st
Page 68 and 69: formed patches less than 1m2 and th
Page 70 and 71: stutchbutyi, at Wirroa island, New
Page 72 and 73: exhibited by the tube-building poly
Page 74 and 75: CHAPTER 3 THE POPULATION STRUCTURE
Page 76 and 77: Asexual reproduction by fragmentati
Page 78 and 79: METHODS Survey design - It has been
Page 80 and 81: RESULTS The species abundances in e
Page 82 and 83: corresponds to 44 setigers using Eq
Page 84 and 85: 1 0000000 00 rg 0 00 d- - Xauanbau
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
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Pygospio elegans size distribution
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used, approximately equivalent to t
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artefacts associated with the metho
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present in high numbers around sewa
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lack, hydrogen sulphide-smelling se
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CHAPTER 5 THE EFFECTS OF MACROALGAL
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METHODS Survey design - During late
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The sediments could not be sampled
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RESULTS Species abundances - Table
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90 — 80 — "-e-' 70 — 60 — 4
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35 — *** 30 25 — 1.) = .-c‘l
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Pygospio elegans size distributions
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which is difficult to compare with
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eason why some invertebrates showed
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This study did not set out to expli
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This reliance upon the early establ
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CHAPTER 6 INITIAL COLONISATION OF D
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esulting community at any stage of
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ambient sediment had been removed.
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emoved since they were the only tax
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All statistics were performed using
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RESULTS Univariate analysis of spec
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3.5 3 5 2 11 5 1 0.5 0 40 35 Ca 30
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of non-patch areas (Figure 6.3(vi))
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the individuals colonising patch az
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Multivariate analysis of community
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Month Sample statistic (Global R) N
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2NP 3NP 4NP .•,, 6NP 5NP 6P 1NP i
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Figure 6.8: Two-dimensional MDS ord
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- - 5P ... 4P . 6P • .‘2NP 1NP
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I 50. 1 60. 70. 80. 90. 100. BRAY-C
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'P2-AZ P3-AZ N2-AZ .- - - " .„ ..
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o • o -o + 350 — 300 = 250 7 g
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The importance of the ambient commu
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In April, when P. elegans larval av
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not only for errant polychaetes, bu
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observed in this study. How crucial
Page 188 and 189:
Micro-scale spatial patterns of mac
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METHODS Experimental design - A pre
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study. These individuals would not
Page 194 and 195:
RESULTS Pilot survey - The pilot su
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Transect survey - Micro-scale patte
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Month v:m ratio pattern Id pattern
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(i) March 1997, replicate 1 -iAlmiA
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(xix) October 1997, replicate 1 (ra
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The new recruits were only sufficie
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The results of correlation analyses
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cf.) . crt N ,—, Cr) C,1 ,—, Cr
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1.2 -0.4 "a 0.8 > (i) % Water conte
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examine the micro-scale spatial pat
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Invertebrate larvae, those of polyc
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laboratory observations are needed
Page 218 and 219:
CHAPTER 8 THE FAUNAL COMMUNITIES OF
Page 220 and 221:
Other theories have been postulated
Page 222 and 223:
RESULTS Univariate analysis of spec
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-T. g 80 g 50 40 30 20 10 (i) Adult
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in significant differences in size
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8.2). This was mainly because of th
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120 100 80 60 - 40 20 0. cn1 c.n (i
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3NP 6NP 4NP 1 NP 5NP 2NP : 3P 1P 6P
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4P 3P 5P 5NP 6P 2P 1P Figure 8.8: T
Page 236 and 237:
Figure 8.10 shows the dendrogram pr
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NP1 NP2 NP2 NP2 NP1 NP1 NP2 NP2 NP2
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Sediment water, organic and silt/cl
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5 350 — 300 250 200 — ISO — 1
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abundances of P. ciliata had more d
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levels of silt/clay and organics. S
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1973; Noji and Noji, 1991). Competi
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shown to consume up to 68% of a 0-g
Page 252 and 253:
In Chapter 7 the micro-scale spatia
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and positions of patches. Consequen
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epresent those found establishing i
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distribution at the micro-scale. Ad
Page 260 and 261:
provide a rich food source for deme
Page 262 and 263:
Armonies W., 1988. Active emergence
Page 264 and 265:
Cha M.W., in prep. Macroalgal mats
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Dobbs F.C. and Vozarik J.M., 1983.
Page 268 and 269:
Flach E.C., 1996. The influence of
Page 270 and 271:
Hall SI, Raffaeni D.G., Basford DJ.
Page 272 and 273:
Keckler D., 1997. Surfer for Window
Page 274 and 275:
Levin L.A. and Creed E.L., 1986. Ef
Page 276 and 277:
Mileikovsky S.A., 1971. Types of la
Page 278 and 279:
Ong B. and Krishnan S., 1995. Chang
Page 280 and 281:
Raffaelli D.G., Hildrew A.G. and Gi
Page 282 and 283:
Scheltema R.S., 1974. Biological in
Page 284 and 285:
Soulsby P.G., Lowthion D., Houston
Page 286 and 287:
McArdle B.H., Morrisey D., Schneide
Page 288 and 289:
Wharfe J.R., 1977. An ecological su
Page 290 and 291:
Zajac R.N. and Whitlatch R.B., 1982
Page 292 and 293:
- C'e) oc0000mooF,o•-ooNtn-coo-00
Page 294 and 295:
APPENDIX 1.2: SPECIES ABUNDANCES FR
Page 296 and 297:
ON In co In ° ken n00000N---0g0N-.
Page 298 and 299:
o m000eno,-0-. 0 0000en ,-. 0.-00 o
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APPENDIX 2: SPECIES ABUNDANCES FROM
Page 302 and 303:
0.- CV N - , .- CI E.104 ..r cv g.,
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cv en 0 a .- ,- .- .- g c', ,- ,- g
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PI — — — Pi n — — - R., .
Page 308 and 309:
P . en .2 Co in ,.. ne .- cq . -- -
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