12th International Conference on Harmful Algae

More documents

Recommendations

Info

INTERNATIONAL SOCIETY FOR THE STUDY OF HARMFUL ALGAE12 th <strong>International</strong> <strong>Conference</strong> on Harmful Algae, Copenhagen, Denmark, 4-8 September 2006and thirteen P. pungens sequencetypes were detected (with up to 3%differentiation). We used ARISA todetermine Pseudo-nitzschia ITS1amplicon sizes- and thus speciescomposition- in a variety ofenvironmental samples, includingduring toxic events. During adomoic acid closure in Washington,ARISA was used to identify themost abundant type of Pseudonitzschiapresent as P. sp., with anamplicon length of 233, which doesnot correspond to anything inGenbank.PO.16-13Spatial distribution ofdinoflagellate cysts in sedimentsof the Yellow SeaSession: PO.16 – Life cyclesCH Hwang 1 , KY Kim 1 , Y Lee 2 , SG Lee 2 ,CH Kim 11 Pukyung National University, BUSAN,South Korea2 Nfrdi, BUSAN, South KoreaWe analyzed 33 sediment samplesfrom the Yellow Sea bypalynological methods to investigatespatial distribution of dinoflagellatecysts. The sampling areascomprised four latitudinal transects,the northernmost located off theShandong Peninsula of China, andthe southernmost off Jeju Island ofKorea. Each transect line comprisedsix to nine stations, spanning thedistance between the Chinese andKorean coasts. In total, we identified26 different types of dinoflagellatecysts. Gonyaulax scrippsae,Alexandrium spp. (ellipsoidal type)and G. spinifera were dominant atall stations surveyed. The latitudinaldistribution trend showed that cystconcentrations along the inner twotransects were much higher thanthose along the outer two transects.Within each transect, cystconcentrations in the offshorecentral areas reached the highestvalues and gradually decreasedtoward both the Chinese andKorean coasts. Overall, cystconcentrations were markedlyelevated in the offshore centralYellow Sea areas and graduallydecreased outward in all fourdirections. This concentric cystdistribution pattern was consistentwith hydrographic features such ascircular current systems,sedimentary properties and waterdepth of the Yellow Sea.PO.14-08Differences in susceptibility ofharmful raphidophytes anddinoflagellates to algicidalbacteria isolated from coastal seaand seaweed bedsSession: PO.14 - MitigationI Imai 1 , T Tsuchiya 1 , I Yoshinaga 1 , NSugino 2 , H Okamoto 21 Kyoto University, KYOTO, Japan2 General Environmental Technos Co.,OSAKA, JapanGrowth and survival of harmfulalgae are largely influenced byalgicidal bacteria in coastalecosystems. The susceptibility of 3raphidophytes (Chattonella antiqua,Heterosigma akashiwo andFibrocapsa japonica) and 2dinoflagellates (Heterocapsacircularisquama and Kareniamikimotoi) was investigated for 411bacterial isolates from seaweedbeds (seaweeds and seawater) ofshelving sea bank at Kansai<strong>International</strong> Airport and offshore inthe Seto Inland Sea in August andNovember 2003. A total of 77strains exhibited algicidal activitiesbut the range of susceptibility toalgicidal bacteria showed great195
INTERNATIONAL SOCIETY FOR THE STUDY OF HARMFUL ALGAE12 th <strong>International</strong> <strong>Conference</strong> on Harmful Algae, Copenhagen, Denmark, 4-8 September 2006variations. Some bacteriaspecifically killed only one of thealgal species examined, and somekilled 2, 3, 4 or all 5 species. Thedensity of the algicidal bacteria wasin thousands / mL or higher inseawater of seaweed beds, muchmore abundant (50 times or more)than offshore. In offshore seawater,algicidal bacteria were associatedwith particles. In seaweed beds, thesame species of algicidal bacteriawere detected in particle-associatedand free-living fractions of seawaterand on the surface of seaweeds.Sequence analyses of SSU rRNAgene revealed that algicidal bacteriabelonged to marineCytophaga/Flavobacterium/Bacteroides group and α- and γ-Proteobacteria. The isolates withthe same sequences to algicidalbacteria did not always showalgicidal activities.PO.14-16Effects of alternate current ongrowth of and damage to toxicmicroalgal cellsSession: PO.14 - MitigationAyaka Ishiguro, Shin Takano,Hitoshi OgawaUniv. Tamagawa, MACHIDA-SHI TOKYO,JapanA typical pattern of the alternatecurrent of the commercial electricpower is the sine wave. However,there are various wave shapes ofthe alternating current, e.g.quadrate, triangle, saw shaped,bias, etc. Moreover, parameterssuch as voltage, current,frequency, distance betweenelectrodes, continuousness andintermittence of the current can bevaried. Although the risk for electricshock is higher with alternatecurrent than direct currentelectricity, the alternate current oflow voltages and currents are usedfor medical treatment.We observe sometime thatmicroalgae whiten in connectionwith electric leaks from submergedpumps in backyard ponds. Effectsof application patterns of thealternate current on different kindsof algae were investigated.Different effects, e.g. whitening,flaking off, cohesion and theseparation, etc. on algae wereobserved. It showed that the SSBwave of the alternate currentcauses gathering of the algae onthe electrode side. Furtherresearch on removal of the toxicsubstances from collected algae isrequired.PO.16-11Dynamics of in situ cystgermination and vegetativepopulation of Alexandriumcatenella in an embayment,central JapanSession: PO.16 – Life cyclesA Ishikawa 1 , M Hattori 1 , I Imai 21 Mie University, TSU, MIE, Japan2 Kyoto University, KYOTO, JapanSeasonal variations of in situgermination flux of cysts andabundance of vegetative cells of thetoxic dinoflagellate Alexandriumcatenella were investigated in AgoBay, central Japan, between July2003 and December 2004. The insitu germination flux (cells/m 2 /day)was measured using a new device'Plankton EmergenceTrap/Chamber (PET Chamber)' thatwe recently developed. Germinationof the cysts on the sedimentoccurred continually, ranging from52 – 1753 cells/ m 2 /day, with noseasonal trend. In contrast, the196
Page 1 and 2:
INTERNATIONAL SOCIETYFOR THE STUDY
Page 3 and 4:
Dear participantWelcome to Denmark
Page 5 and 6:
INTERNATIONAL SOCIETY FOR THE STUDY
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146: INTERNATIONAL SOCIETY FOR THE STUDY
Page 195: INTERNATIONAL SOCIETY FOR THE STUDY
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
Page 301 and 302:
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
Page 317 and 318:
Page 319 and 320:
Page 321 and 322:
Page 323 and 324:
Page 325 and 326:
Page 327 and 328:
Page 329 and 330:
Page 331 and 332:
Page 333 and 334:
Page 335 and 336:
Page 337 and 338:
Page 339 and 340:
Page 341 and 342:
Page 343 and 344:
Page 345 and 346:
Page 347 and 348:
Page 349 and 350:
Page 351 and 352:
Page 353 and 354:
Page 355 and 356:
Page 357 and 358:
Page 359 and 360:
Page 361 and 362:
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
Page 369 and 370:
Page 371 and 372:
Page 373 and 374:
Page 375 and 376:
Page 377 and 378:
Page 379 and 380:
Page 381 and 382:
Page 383 and 384:
Page 385 and 386:
Page 387 and 388:
Page 389 and 390:
Page 391 and 392:
Page 393 and 394:
Page 395 and 396:
Page 397 and 398:
Page 399 and 400:
Page 401 and 402:
Page 403 and 404:
show all

12th International Conference on Harmful Algae

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?