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

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12 3 24 3 N" ., J' 1 1",, _____ < .b.·" i (J~ . ,.' .I, III 3 m 8 o A '72 t 973 1 9 7 L. 200 Mean stipe weight (9ro 100 T /1> 1 '72 F A 1973 Time (months) 1974 o D J 1975
Figure 9.9. change in the stipe proportion of standing crop in a recolonisin9 D. cmtaratic!Q sward: Area la, Tautuku. Figure 9.10. Change in the stipe proportion of standing crop in a reoolonising D. cmtaratic!Q sward: Kean Point. Kaikoura. Figure 9.11. STANDING CROP AND DENSITY OF RECOLONISING D. ANTARCTICA SWARD. Increase in D. antaI'C!tica standing crop on sites cleared during spring and autumn (solid lines), and decline in numerical density of plants (dotted linea). A + D: Tautuku data. B + C: Keirn Point data.
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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.
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UNUSUAL STIPE FEATURES OF D. A GROW
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DEGREE OF LAMINA DIVIStON AND HONEY
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Figure 5.14. COMPARISONS OF SAMPLES
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135 CHAPTER SlX REPRODUCTION AND PH
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137 Hyphae invade the neck region o
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'I'he reproductive period of D. wil
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141 A large number of ova at 20°C
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143 released in each of the three s
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Figure 6.1. DEVELOPMENT OF CONCEPTA
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Figure 6.2. REPRODUCTIVE PERIODICIT
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147 CHAPTER SEVEN GROWTH AND MORTAL
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149 (i) Holes punched longitudinall
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4 lSI growth in the length for the
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153 Table 7.5 Frequency of D. antaY
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155 Holdfast diameter increB,sed at
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157 7.5 MORTJ.l.LITY (a) Mortality
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159 seasonal pattern simila~ to tha
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161 A similar of small plants there
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! 6.0~ 5.8 Total 5.6 Ie ngth 5.4 (
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120 100 E E ~ 8 c ~6 ~ +- (I) ..n I
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202 t 1 2 J1cm 3 11 1c
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A Perce:n increase in diameter x lO
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60 Percentage increase 40 in length
Page 218 and 219: 70 60 Percentage increase 40 in len
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: Figure 9.7. STIPE GROWTH OF RECOLON
Page 271 and 272: Figure 9.12. CHAOOE IN S1 ZE DISTRI
Page 273 and 274: Figure 9.13. Growth of ~ua1l « 0.5
Page 275: Figure 9.14. EXPERIMENTAL REMOVAL O
Page 280 and 281: 213 pathway of Du~vittaea sp. ALLOP
Page 282 and 283: 215 'co d:tying conditions than D.
Page 284 and 285: 217 appears to be gl:eatly influenc
Page 286 and 287: 219 tide. From Bayle's Law 1 the bl
Page 288 and 289: 221 buoyancy. A highly honeycombed
Page 290 and 291: 223 of D. antaratiaa across 25° of
Page 292 and 293: 22S Hasegawa (1962) and Kat ... ash
Page 294 and 295: 5 ..· 7 years old. Some were still
Page 296 and 297: 229 . or combinations of species, p
Page 298 and 299: 231 Harvesters will not cut all sma
Page 300 and 301: 233 10.10 THE RESOURCE RELATIVE TO
Page 302 and 303: 235 10.11 SUMMARY (1) Four DurviZZa
Page 304 and 305: 237 (17) The mean standing crop of
Page 306: RELATIONSHIP BETWEEN TIME OF HARVES
Page 309 and 310: 241 Batham, E.J, (1965). Rocky shor
Page 311 and 312: 243 DaNson, E. Y. (1966). Marine bo
Page 313 and 314: Hooker, J.D. and Harvey, W.H. (1843
Page 315 and 316: 247 Kuehnemann, O. (1970). Algunas
Page 317 and 318: 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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