Knowledge (XXG)

Ichaboe Island

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43: 27: 50: 247:) are the region's most abundant seabirds with tens of thousands on the islands during the nesting season. The birds' guano also provide nutrients that flow back into the surrounding sea when large waves hit the island or when it rains. The guano enriches the rocky shore with carpets of seaweed grazed by 301:
housed thousands of workers. Large-scale scraping and bagging of ′white gold′ began in 1843 and peaked two years later. The value was so great that competition was fierce; murder was committed over harvesting rights, and two British warships were dispatched to restore order over what became known as
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and became a nature reserve in 1987. The islands were returned to Namibia in 1994 and are managed by the Ministry of Fisheries and Marine Resources (MFMR). Ichaboe, along with Mercury and Possession Islands, have permanent residents who partake in research and conservation of the seabirds. Scraping
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of guano continues with concessions granted during the 1980s and in 2000 a wall was put up around the perimeter of the island. The wall was built to prevent winds blowing the guano into the sea and has a few entry points for penguins’ to access the breeding areas.
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the ′Great Guano War′. Britain took possession of the island on 21 June 1861. Guano has been taken off the island regularly, and in 1880 and 1881, Ichaboe Guano was claimed to be the ″richest and most fertilising guano imported into England″ containing 12 to 13%
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and offshore winds drive the surface water away from the coast. Water rises from depths of hundreds of metres and at speeds of up to 12 m per minute bringing nutrients to the surface. A combination of sunlight and nutrients provide the conditions for
262:. On the western side of the island is a reef which offers some protection from Atlantic waves, although sea spay covers the island during storms. The island was once covered in over 7 m of bird-droppings ( 323:
Ichaboe regularly supports over 50,000 seabirds of at least eight species and is consequently one of the most important and densely packed seabird breeding in the world. The island holds 65% of the world's
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and this is the reason why southern Africa is home to one of the richest seabird communities in the world. The islands off the west coast of southern Africa provide refuge from predators.
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and the discovery of bird manure to depths of more than 7 m, the focus turned to the quarrying of guano. At one time more than 400 ships anchored off the island and
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Ichaboe Island is a 6.5 ha low-lying island, approximately 1.5 km off the Diamond Coast of Namibia and 48 km north of
88: 42: 214:, the seas on the west coast of southern Africa are some of the most productive in the world. The current flows north from the 167: 285:
In the early 19th-century Ichaboe and other islands of the South African coast witnessed the guano rush, equivalent of the
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which are the foundation for other life in the Benguela marine ecosystem. Feeding on the phytoplankton are
447: 187: 384: 653: 638: 419: 252: 191: 584:"Britain takes possession of Ichaboe Island off the Namibian coast in the name of Queen Victoria" 365: 325: 150: 348:), having 4% of the world's breeding population. Ichaboe also has large numbers of endangered 341: 294: 211: 155: 349: 411: 357: 329: 274: 240: 215: 76: 622: 427: 311: 220: 290: 273:
Bird Life International recognizes Ichaboe Island along with other islands such as
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and the nearby coast as an Important Bird Area for their seabird colonies.
26: 443: 303: 179: 267: 263: 266:), which was quarried in the 19th and 20th-centuries for sale as 202:
There are twelve small islands on the Namibian coast between
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Mode of Shipping the Guano, Ichaboe Island, Namibia (1844)
161: 149: 135: 127: 119: 82: 72: 67: 503:Peschak, Thomas (July 2006). "The White Stuff". 312:Cape Provincial Administration of South Africa 8: 19: 612:. No. 132. 20 January 1881. p. 1. 507:. Vol. 24, no. 7. pp. 52–6. 410:Whales sighted off the island include the 194:(IBAs) for its seabird breeding colonies. 25: 18: 227:, which attract an abundance of shoaling 608:"Important To Farmers (Advertisement)". 462: 49: 522: 520: 518: 516: 514: 498: 496: 494: 468: 466: 310:. The island was administered by the 123:0.065 km (0.025 sq mi) 7: 553: 551: 549: 14: 293:and following a visit in 1828 by 391:) also breed here. Thousands of 48: 41: 16:Island in ǁKaras Region, Namibia 644:Important Bird Areas of Namibia 289:. The island was once used for 649:Uninhabited islands of Namibia 629:Nature conservation in Namibia 1: 588:South African History Online 178:is a small rocky island off 407:) may roost on the island. 670: 634:Geography of ǁKaras Region 452:Cephalorhynchus heavisidii 426:). The cetaceans include, 534:. University of Cape Town 436:common bottlenose dolphin 140: 36: 24: 479:. University of Pretoria 295:Captain Benjamin Morrell 251:, which are predated by 432:Lagenorhynchus obscurus 362:Phalacrocorax neglectus 346:Phalacrocorax coronatus 104:26.288889°S 14.936667°E 563:BirdLife International 532:Animal Demography Unit 416:Megaptera novaeangliae 375:). Smaller numbers of 334:Phalacrocorax capensis 245:Phalacrocorax capensis 188:BirdLife International 186:. It is recognised by 128:Highest elevation 385:African oystercatcher 168:Lüderitz Constituency 131:7 m (23 ft) 109:-26.288889; 14.936667 420:southern right whale 306:and 27 to 30% guano 448:Heaviside's dolphin 424:Eubalaena australis 354:Spheniscus demersus 192:Important Bird Area 100: /  21: 440:Tursiops truncatus 389:Haematopus moquini 364:), as well as the 287:American gold rush 249:goat's-eye limpets 381:Larus dominicanus 342:crowned cormorant 173: 172: 661: 614: 613: 605: 599: 598: 596: 594: 580: 574: 573: 571: 569: 559:"Ichaboe Island" 555: 544: 543: 541: 539: 528:"Ichaboe Island" 524: 509: 508: 500: 489: 488: 486: 484: 478: 474:"Ichaboe Island" 470: 405:Chlidonias niger 212:Benguela Current 115: 114: 112: 111: 110: 105: 101: 98: 97: 96: 93: 52: 51: 45: 29: 22: 669: 668: 664: 663: 662: 660: 659: 658: 619: 618: 617: 607: 606: 602: 592: 590: 582: 581: 577: 567: 565: 557: 556: 547: 537: 535: 526: 525: 512: 502: 501: 492: 482: 480: 476: 472: 471: 464: 460: 350:African penguin 338:near-threatened 321: 283: 241:Cape cormorants 200: 145: 108: 106: 102: 99: 94: 91: 89: 87: 86: 63: 62: 61: 60: 59: 58: 57: 53: 32: 17: 12: 11: 5: 667: 665: 657: 656: 651: 646: 641: 636: 631: 621: 620: 616: 615: 610:The Cornishman 600: 575: 545: 510: 490: 461: 459: 456: 412:humpback whale 397:Sterna hirundo 373:Morus capensis 358:bank cormorant 330:Cape cormorant 320: 317: 282: 279: 275:Mercury Island 253:spiny starfish 237:Morus capensis 216:Southern Ocean 199: 196: 176:Ichaboe Island 171: 170: 165: 159: 158: 153: 147: 146: 141: 138: 137: 136:Administration 133: 132: 129: 125: 124: 121: 117: 116: 84: 80: 79: 77:Atlantic Ocean 74: 70: 69: 65: 64: 56:Ichaboe Island 55: 54: 47: 46: 40: 39: 38: 37: 34: 33: 30: 20:Ichaboe Island 15: 13: 10: 9: 6: 4: 3: 2: 666: 655: 652: 650: 647: 645: 642: 640: 637: 635: 632: 630: 627: 626: 624: 611: 604: 601: 589: 585: 579: 576: 564: 560: 554: 552: 550: 546: 533: 529: 523: 521: 519: 517: 515: 511: 506: 499: 497: 495: 491: 475: 469: 467: 463: 457: 455: 453: 449: 445: 441: 437: 433: 429: 428:dusky dolphin 425: 421: 417: 413: 408: 406: 402: 398: 394: 390: 386: 382: 378: 374: 370: 367: 363: 359: 355: 351: 347: 343: 339: 335: 331: 327: 318: 316: 313: 309: 305: 300: 296: 292: 288: 280: 278: 276: 271: 269: 265: 261: 256: 254: 250: 246: 242: 238: 234: 230: 226: 222: 221:phytoplankton 217: 213: 210:. Due to the 209: 205: 197: 195: 193: 189: 185: 184:Diamond Coast 181: 177: 169: 166: 164: 160: 157: 156:ǁKaras Region 154: 152: 148: 144: 139: 134: 130: 126: 122: 118: 113: 85: 81: 78: 75: 71: 66: 44: 35: 28: 23: 609: 603: 591:. Retrieved 587: 578: 566:. Retrieved 562: 536:. Retrieved 531: 505:BBC Wildlife 504: 481:. Retrieved 451: 439: 431: 423: 415: 409: 404: 396: 388: 380: 372: 361: 353: 345: 333: 322: 299:shanty towns 284: 272: 257: 244: 236: 229:pelagic fish 208:Orange River 201: 175: 174: 163:Constituency 142: 639:Guano trade 393:common tern 369:Cape gannet 233:Cape gannet 225:Zooplankton 107: / 83:Coordinates 623:Categories 458:References 442:) and the 401:black tern 366:vulnerable 356:) and the 326:endangered 308:phosphates 204:Walvis Bay 95:14°56′12″E 92:26°17′20″S 568:11 August 377:kelp gull 198:Geography 68:Geography 654:Lüderitz 593:3 August 538:2 August 483:3 August 260:Lüderitz 206:and the 73:Location 444:endemic 304:ammonia 291:sealing 281:History 180:Namibia 143:Namibia 418:) and 399:) and 383:) and 268:manure 239:) and 190:as an 151:Region 477:(PDF) 319:Fauna 264:guano 595:2017 570:2017 540:2017 485:2017 120:Area 454:). 434:), 182:'s 625:: 586:. 561:. 548:^ 530:. 513:^ 493:^ 465:^ 446:, 340:, 328:, 255:. 597:. 572:. 542:. 487:. 450:( 438:( 430:( 422:( 414:( 403:( 395:( 387:( 379:( 371:( 360:( 352:( 344:( 332:( 243:( 235:(

Index


Ichaboe Island is located in Namibia
Atlantic Ocean
26°17′20″S 14°56′12″E / 26.288889°S 14.936667°E / -26.288889; 14.936667
Region
ǁKaras Region
Constituency
Lüderitz Constituency
Namibia
Diamond Coast
BirdLife International
Important Bird Area
Walvis Bay
Orange River
Benguela Current
Southern Ocean
phytoplankton
Zooplankton
pelagic fish
Cape gannet
Cape cormorants
goat's-eye limpets
spiny starfish
Lüderitz
guano
manure
Mercury Island
American gold rush
sealing
Captain Benjamin Morrell

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