A biological study of Durvillaea antarctica (Chamisso) Hariot and D ...

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70 60 Percentage increase 40 in length ---"---~ between :w censuses o " " . " 20 o 1972 D Pe of s which " " decreased in 10 length 1 912 o 0 F '1973 Time (months) A J A 1974 o n HJ15
Figure 7 .ll. UNDERSTOREY D. censuses of censuses of when measured. COMPARISON OF G~WTH RATES OF SOLITARY AND A: Growth in mean between plants. B: Growth in mean between plants. All 0.1-0.5 m Marked D. antarctica fram Tautuku. Mean values with 95\ confidence limits. COMPARISON OF GROWTH RATES OF D. ANTARCTICA AT'l'ACHED TO COMPOSITE HOLDFASTS AND WITH DISCRETE HOLDFASTS. A; Growth in mean length between censuses of specimens attached to te holdfasts. B; Growth in mean length between censuses of specimens with discrete holdfasts. All 0.5-3.6 m long. Mean values with 95% confidence 11mi ts.
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A BIOLOGICAL STODY OF AN'JlARCTICA
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j i "The seas: CCl1l1(2: running in
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v CHAPlEt( 7 8 9 10 t\ PPE ND ICES
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vii Fot' theil' effol"ts to obi;ain
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CHAPTER INTRODUCTION I acid and its
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1 CHAPTER TWO MATERIALS AND METHODS
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(c) Standing crop Nas measured as w
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7 the primary blade broke off. Furt
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9 four sites: Areas 5b and 6b at 'f
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1 t the rock surface. Area E (1 x 2
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13 ____ ~ __ 2_._2 Scale of concept
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15 added to the top of the tube. Th
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In addition, dai records of sea sta
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19 The series of low ridges absorbs
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Figure 2.1. LOCATION OF PRINCIPAL S
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Figur.e 2.3. TAU'l'UKU STODY AREA.
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T fine cracks D
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'to J ~" FMAMJ ASONDJ ASONDJ FMAMJ
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27 CH/\P A TAXONOMIC AND NOMENCI ..
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29 (i) Hol,dfast The external morph
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31 {c} The basic cellular arrangeme
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3.1 J03 TYPIFICATION (1) DUX'viUaea
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35 commanded on a scie:ntlfic voyag
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37 recently as 1921 (Cockayne 1921)
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stipe (less than 5 em long) and a h
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41 A TeD spccimclI annotated on the
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43 cortex (Figs 3.3a and 3.4e). Oth
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45 and states, "SaY'cophYCU8 simple
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47 holdfast,
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49 Table 3.1 Differences between Du
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51 General distribution: The Chatha
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53 7 ~) (a) Stipitate lateral lamin
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(a) Laminaria po~oidea in the Lamou
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of D. Hook.fil. 1845. TCD .3 in (c)
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LAMINA SECTIONS OF HERBARIUM SPECIM
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=.at.:;;;.;;;:.,;;;;....:....;,., .
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(b) (c) (d) SECTIONS THROUGH THE ME
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II I J c d
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f end of lamina or differentiated m
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66 that DurvilZaea extends several
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613 numerous narrow channels. On th
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70 from IVJLWS to a level between t
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72 within 0,3-0.5 m of the band. Th
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74 Some growing on crevices on the
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76 level of stl/ards of D. ar/"l;ar
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78
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80 algae except for those in crevic
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82 (d) Australia: D. potatoY'UflJ i
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84 d~stribution at species, winter
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86 several thousand miles. It is li
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80 (cl D. antarctica extends no nor
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90 The most southern tip of South A
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92 islands. On Kerguelen and Crozet
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Figure 4.2. D. ANTARCTICA AT HEARD
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d e
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~I 50
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WORLD DISTRIBUTION OF DlIRVILLAl!:A
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Figure 4.6. DISTRIBUTION OF D. ANTA
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50 45 /" b WATER LOSS /0 EXPESSED A
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102 In almost all the composite hol
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104 confined to the merist.oderm, t
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106 longe:r.: than D. anta:.r'ctica
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108 This is not the only way that l
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110 (iii) Cape form (Figs.3.9a,b: 5
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of antarctica across a 9 Sa 8 7 10
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114 'rable 5,3 Measurements of D. a
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116 Subsequent reg~neration of shor
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118 at the entran.ce to l-'Iilford
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120 with increasing latitude. The i
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1mm
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t lOO,AU".
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30-60mins 2
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J I em IDem J ] 10 em ] IOcm 3-4 we
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f
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CJ) -0 I\) Q.. 60 50 Q 3 40 ~ ....
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Figure 5.9. CLIFF FACES AT TADTUKU.
Page 170: UNUSUAL STIPE FEATURES OF D. A GROW
Page 174 and 175: DEGREE OF LAMINA DIVIStON AND HONEY
Page 176 and 177: Figure 5.14. COMPARISONS OF SAMPLES
Page 178 and 179: 135 CHAPTER SlX REPRODUCTION AND PH
Page 180 and 181: 137 Hyphae invade the neck region o
Page 182 and 183: 'I'he reproductive period of D. wil
Page 184 and 185: 141 A large number of ova at 20°C
Page 186 and 187: 143 released in each of the three s
Page 188 and 189: Figure 6.1. DEVELOPMENT OF CONCEPTA
Page 190 and 191: Figure 6.2. REPRODUCTIVE PERIODICIT
Page 192 and 193: 147 CHAPTER SEVEN GROWTH AND MORTAL
Page 194 and 195: 149 (i) Holes punched longitudinall
Page 196 and 197: 4 lSI growth in the length for the
Page 198 and 199: 153 Table 7.5 Frequency of D. antaY
Page 200 and 201: 155 Holdfast diameter increB,sed at
Page 202 and 203: 157 7.5 MORTJ.l.LITY (a) Mortality
Page 204 and 205: 159 seasonal pattern simila~ to tha
Page 206 and 207: 161 A similar of small plants there
Page 208 and 209: ! 6.0~ 5.8 Total 5.6 Ie ngth 5.4 (
Page 210 and 211: 120 100 E E ~ 8 c ~6 ~ +- (I) ..n I
Page 212 and 213: 202 t 1 2 J1cm 3 11 1c
Page 214 and 215: A Perce:n increase in diameter x lO
Page 216 and 217: 60 Percentage increase 40 in length
Page 220 and 221: il10rease 20 ill rot!)1 length. r '
Page 222 and 223: mortality 3 .' ' A , ••••
Page 224 and 225: 5 4 Percent mottality:1 per month h
Page 226 and 227: 60 50 2 :3 Plant length (metras) 5
Page 228 and 229: 175 total length closely resembled
Page 230 and 231: 177 sampling error l , and to elimi
Page 232 and 233: 179 of the shoreline; a procedure r
Page 234 and 235: Figure 8.1. SIZE DISTRIBUTION OF A
Page 236 and 237: Figure 8.2. size at different seaso
Page 238 and 239: F i2..ur e 8. 3 • SEASONAL VARIAT
Page 240: (a) STORM DAMAGE TO A D. WILLANA BE
Page 243 and 244: 186 clumps of Pachyme~ia ZU8oria, G
Page 245 and 246: HIB (continued) Species sp. 5P, Zin
Page 247 and 248: 190 On areas cleared during spring
Page 249 and 250: 192 mlportant cause was probably pr
Page 251 and 252: 194 recoLonis of D.anta .. cticc't
Page 253 and 254: 196 (d) Numex~cal density: While st
Page 255 and 256: 198 Although the standing crop of D
Page 257 and 258: 200 however 1 the articulated coral
Page 259 and 260: SUCCESSION ON AREAS CLEARED IN SPRI
Page 261 and 262: Figure 9.2. GROWTH IN LENGTH OF REC
Page 263 and 264: ANTARCTICA: confidence limits. GRCW
Page 265 and 266: Figure 9.5. KAIKOURA. STIPE GROWTH
Page 267 and 268: Figure 9.7. STIPE GROWTH OF RECOLON
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Figure 9.9. change in the stipe pro
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Figure 9.12. CHAOOE IN S1 ZE DISTRI
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Figure 9.13. Growth of ~ua1l « 0.5
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Figure 9.14. EXPERIMENTAL REMOVAL O
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213 pathway of Du~vittaea sp. ALLOP
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215 'co d:tying conditions than D.
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217 appears to be gl:eatly influenc
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219 tide. From Bayle's Law 1 the bl
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221 buoyancy. A highly honeycombed
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223 of D. antaratiaa across 25° of
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22S Hasegawa (1962) and Kat ... ash
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5 ..· 7 years old. Some were still
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229 . or combinations of species, p
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231 Harvesters will not cut all sma
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233 10.10 THE RESOURCE RELATIVE TO
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235 10.11 SUMMARY (1) Four DurviZZa
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237 (17) The mean standing crop of
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RELATIONSHIP BETWEEN TIME OF HARVES
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241 Batham, E.J, (1965). Rocky shor
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243 DaNson, E. Y. (1966). Marine bo
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Hooker, J.D. and Harvey, W.H. (1843
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247 Kuehnemann, O. (1970). Algunas
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249 Moore, L.B. and Cribb, A.S, (19
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251 Skottsberg, c. (1941). Communit
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253 Will. H. (1890). internationaZe
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255 APPENDIX ONE (CONTINUED) (b) DA
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257 APPENDIX TWO DIS'I'RteUTION REC
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259 APPENDI)( THREE DISTRIBUTIONAL
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261 APPFNDIX FOUR DRIFT RECORDS OF
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264 (i) Boil the dried kelp in a sa
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A biological study of Durvillaea antarctica (Chamisso) Hariot and D ...

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