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Capricorn and Bunker Group

The islands and reefs of the Capricorn and Bunker Group are situated astride the Tropic of Capricorn at the southern end of the Great Barrier Reef, approximately 80 kilometres east of Gladstone, which is situated on the central coast of the Gladstone Region, Queensland, Australia.

Geography
The Capricorn and Bunker group of islands of the southern Great Barrier Reef lies between from the adjacent departure ports and urban centres of Yeppoon, Gladstone, Town of 1770 and Bundaberg. The Capricorn and Bunker groups (including Lady Elliot Island and Reef) are a distinct group of 22 reefs straddling the Tropic of Capricorn, at the southern end of the Great Barrier Reef. There are 16 permanent coral cays on these reefs, including twin cays on Hoskyn and Fairfax Reefs. North West Island () is the largest coral cay in the Great Barrier Reef Marine Park. The islands have high natural values, notably breeding populations of seabirds, marine turtles and coral cay vegetation. Capricorn Group The Capricorn Group of islands consists of nine coral cays: • North Reef IslandTryon IslandNorth West IslandWilson IslandWreck IslandMasthead IslandErskine IslandHeron IslandOne Tree Island Additional to these are several reef structures separate from the individual island but still part of the Capricorn Group of islands including • Sykes Reef • Wistari Reef • Polmaise Reef • Fitzroy Lagoon Reef • Llewellyn Reef • Lamont Reef • Broomfield Reef (possibly with a sandbank or an unvegetated cay) A tourist Resort and Marine Scientific Research Station have been established on Heron Island. A manned lighthouse operates at North Island and the University of Sydney operates a field research station on One Tree Island. Bunker Group The Bunker Group consists of five coral cays: • Lady Musgrave IslandFairfax Islands, (East Fairfax & West Fairfax) • Hoskyn Islands (East and West Hoskyn islands) In association with • Boult Reef == History ==
History
European pre-discovery of the Group (close sailbys) During Captain James Cook's first voyage of discovery he sailed well inside the island group between 21 and 25 May 1770, typically offshore. He then made his second landing in Australia at the town of 1770. Wednesday 23rd Continued our Course a long shore at the distance of about 2 Miles off having from 12 to 9, 8 and 7 fathom water until 5 oClock at which time we were abreast of the South point of a large open bay where in I intended to anchor. accordingly we hauld in close upon a wind and sent a boat a head to sound. after making some trips we anchor'd at 8 oClock in 5 fathom water a Sandy bottom the South point of the Bay bore E3/4 South distance 2 Miles and the north point NW1/4 N and about 2 Miles from the ^shore in the bottom of the bay........... In the AM I went a shore with a party of men in order to examine the Country accompanied by Mr Banks and the other gentlemen. we landed alittle within the South point of the Bay where there is a channel leading into a large Lagoon During Matthew Flinders' exploration of the Australian coastline in , a 334-ton sloop, to make a survey along the southern coast of the Australian mainland he passed inshore of the island group. WEDNESDAY 4 AUGUST 1802, the wind had shifted gradually round, from north to the south-westward; and at noon the north head of Bustard, Bay was brought to bear S. 16° E., four leagues, our latitude being then 23° 48', and longitude 151° 40'. A low island was seen from the mast head, bearing north at the supposed distance of six leagues, of which captain Cook does not make any mention;* and the furthest visible part of the main land was a conspicuous hill, named Mount Larcom, in compliment to captain Larcom of the navy. It bore W. ½° N., ten or eleven leagues; but the coast line between it and the north head of Bustard Bay, seemed to be much broken. [* A cluster of low islands, about fifteen leagues from the coast, was seen in the following year by Mr. Bunker, commander of the Albion, south whaler. He described the cluster to be of considerable extent, and as lying in latitude 23¾°, and longitude about 152½°; or nearly a degree to the eastward of the low isle above mentioned. It is probably to these islands, whose existence captain Cook suspected, that the great flights of boobies he saw in Hervey's Bay retire at night.] Discovery of the Bunker Group In 1803 Captain Eber Bunker of the whaling ship was the first European to discover the region and gave his name to the southern group. The Mitchell Library holds a portrait of Eber Bunker wearing a white waistcoat and white linen ruffled shirt each with stand collars, a white stock at neckline, and a navy blue wool double-breasted jacket with brass buttons titled Captain Eber Bunker, 1760–1836, The first of the Whalers, Arrived New South Wales 1791. Charting of the Groups The southern cays and reefs were first chartered between 1819 and 1821 by Lieutenant Phillip Parker King Royal Navy initially in Mermaid and later in Bathurst. July 19, 1820 we steered on, and, a ten o’clock discovered a group of low woody islets. They were named Bunker Isles The main charting exercise for all the islands and reefs was carried out in 1843 under the command of Captain Francis Price Blackwood in which was accompanied by Bramble. In 1841 Blackwood was appointed to command the corvette HMS Flyin the first hydrographic survey commissioned by the Admiralty for exploring and charting the north-east Australian coast. Fly, fitted with costly instruments, and carrying two scientists, Joseph Jukes, geologist, and John MacGillivray, zoologist, sailed from Falmouth in April 1842 with the cutter Bramble, under the charge of Lieutenant Charles Yule. After a stop in Hobart Town from August to October, the two ships called at Sydney and began the survey in December 1842. In the next three years Fly charted from Sandy Cape to Whitsunday Island, including Swain Reefs and Capricorn Islands and the broad passages between. On 7 January 1843, was the first time that the crew of Fly set foot on the First Bunker Island (Lady Elliot Island). Fly then carried on and on 10 January 1843, anchored off One Tree Island and gave the island its name. The crew of Fly landed on this island the following day The single tree (which was in fact a small clump of common pandanus of these seas, with its roots exposed above ground)....... On January the 12th We anchored a few miles farther to the N.W. in the centre of a group of reefs and islands, under one thickly wooded island that afterwoods obtained the name if Heron Island...... Jan 13 to 18 - The Fly, the Bramble and the boats were engaged in surveying the group of islands and reefs about, which, from the tropic of Capricorn running through them, have been called the Capricorn Group...... Jan 18 - Landed with Captain Blackwood on Wreck Island. This was so named for part of a vessel 6 or 700 tons. The island was about a quarter of a mile long and not more than 100 yards broad; a pile of sand covered by thick bushes. Jan 21 Captain Blackwood and Mr Evans being ashore to "take sights" for the chronometers, found on the island some traces of the wrecked crew. On one tree was cut "The America, June 1831;" on another "Mary Ann Broughton;" on another "Capt. E. David;" and "Nelson November, 1831." There were likewise the soles of a pair of child’s shoes, some bottles, some broken dishes, and an old cask. I believe the wreck was that of a whaler, and that the crew were taken off by another whaler, as there were no signs of either graves or bones. Yet latter during September 1933 the leases and guano rights of Fairfax and Hoskyn Islands, off Gladstone, were sold by auction at Gladstone. They were bought on behalf of the Barrier Reef Phosphate (Guano) Syndicate. It is unsure if the project ever succeed in the removal of guano from Hoskyn Islands. Early uses – turtle soup canneries Turtle soup canneries operated on North West Island from 1904–14 and 1924–26, and on Heron Island from 1925–29. Old boilers and other remnants from these activities remain on site. Tourist resorts 1930s A concrete slab is the only remnant of a resort which operated at Lady Musgrave Island during the 1930s. The island had been a hub for a number of pleasure cruises when eventually more extensive construction of tourist facilities occurred in 1938 and 1939 at Lady Musgrave Island, including six cottages and other facilities. In 1932 Captain Christian Poulsen, engaged in bringing fishing parties to the reef, realised the potential of Heron Island as a tourist attraction. In 1936 he bought the lease of the island for £290 and set up a tourist resort which is still in operation. Islands as military target practice 1940s East and West Fairfax Islands were used as a bombing range by the Royal Australian Air Force and Royal Australian Navy from the 1940s through to the 1960s. It is likely that during World War II Lady Musgrave reef was also used for bombing practice "with the reef now practically a marine desert" as reported in 1952. Historic and other shipwrecks, as well as an aircraft wreck, are located on several reefs surrounding the cays. Current uses A lighthouse was constructed on Lady Musgrave Island in April 1974. Much of this area comes under the Capricornia Cays National Park with current usages including camping, permitted on three cays up to the following limits: • North West Island 150 campers • Lady Musgrave Island 50 campers • Masthead Island 60 campers (30 from October to March) The area also has many visits by both passing vessels cruising the Queensland cost and day trippers in fast jet catamarans (typically Lady Musgrave Island). The area is also of significances as a fishery particularly for King Prawns. ==Geomorphology and landscape==
Geomorphology and landscape
The Capricorn and Bunker Cays form part of a distinct geomorphic province at the southern end of the Great Barrier Reef. The cays and their reefs lie on the western marginal shelf, and are separated from the mainland by the Curtis Channel. The cays are not generally visible from the mainland, although Masthead Island may be viewed from Mount Larcom on a clear day. Geologically the cays are young, having developed during the Holocene period, they are mostly around 5000 years old. The sea level was much lower during the last ice age (at the end of the Pleistocene period) and the coastal plain on which today's reefs and cays developed was completely exposed. Early in the Holocene (around 10,000 years ago) the sea level began to rise, until it stabilised at its present level around 6000 years ago. Once the sea level stabilised, it was possible for reef flats to expand and provide potential sites for the formation of cays. Four distinct reef types occur within the Capricorn and Bunker Groups • 1. Platform Reefs:- Tyron, Wreck, North, Wilson, and Erskine Reefs. • 2. Lagoonal Platform Reefs:- Heron, and One Tree Reefs. • 3. Elongate Platform Reefs:- North West, and Masthead Reefs. • 4. Closed Ring Reefs:- Lady Musgrave, Fairfax, and Hoskyn Reefs. The cays occur on planar reefs of various sizes and with various levels of exposure to the prevailing winds. These factors have largely determined cay size and composition, which consists either of shingle, sand, or a mixture of both. Cay stability is profoundly affected by cyclonic disturbance. The coral cays belong to two distinct types: • 1. Vegetated sand cays:- North West, Heron, Masthead, Erskine, Wilson, Wreck, Tryon, North, Fairfax (West), and Hoskyn (West). • 2. Shingle cays:- One Tree, Lady Musgrave, Fairfax (East), and Hoskyn (East). The sand cays are all located to the lee of their reef flat, whereas the shingle cays, with the exception of Lady Musgrave, are located on the windward side. They vary in size, covering from one to 12 percent of the reef top surface area and there does not appear to be any correlation between island size, reef size, or stage of reef development. ==Flora ==
Fauna
Birds nests. The Capricorn and Bunker Group contains 73–75 percent of all seabird biomass in the Great Barrier Reef World Heritage Area. All the cays, except Broomfield Cay, have been identified as significant seabird breeding islands. The white-bellied sea-eagle (Haliaeetus leucogaster) once nested on most of the cays and breeds during the winter months, nest sites are now restricted to Tryon, North West, Wilson, Wreck, East Fairfax and West Hoskyn Islands. All-year resident and breeding within the group are: • Common eastern reef egret (Egretta sacra sacra) • Australian buff-banded rail (Gallirallus philippensis mellori) • Common bar-shouldered dove (Geopelia humeralis humeralis) • Australian sacred kingfisher (Todiramphus sanctus sanctus) • Common black-faced cuckoo-shrike (Coracina novaehollandiae novaehollandiae) • Capricorn silvereye (Zosterops lateralis chlorocephalus) Migratory waders often sighted within the group include: , Lady Elliot Island, Queensland, Australia The bird family Charadriidae includes the plovers, dotterels, and lapwings, • Pacific golden plover (Pluvialis fulva) • Mongolian plover (Charadrius Mongolus) on Great Barrier Reef in Queensland, Australia As well as the Scolopacidae are which are a family of waders. Many of the smaller species are often called "sandpipers" and include curlews and snipes. • Wandering tattler (Tringa brevipes) • Grey-tailed tattler (Tringa incana) • Bar-tailed godwit (Limosa lapponica) • Black-tailed godwit Limosa limosaRuddy turnstone (Arenaria interpres) • Red-necked stint (Calidris ruficollis) • Whimbrel (Numenius phaeopus) Birds that often visit the group includes: The Haematopodidae or oystercatchersPied oystercatcher (Haematopus longirostris) • Sooty oystercatcher (Haematopus fuliginosus) The bird family Phalacrocoracidae is represented by some 40 species of cormorants and shags 2 of which are regularly found in the area • Little black cormorant (Phalacrocorax sulcirotris) • Little pied cormorant (Phalacrocorax varius) , Lady Elliot Island, Queensland The bird family Sulidae comprises the gannets and boobies. Both groups are medium-large coastal seabirds that plunge-dive for fish • Brown booby (Sula leucogaster) s Roosting with little terns, note size difference Terns are seabirds in the family Sternidae, previously considered a subfamily (Sterninae) of the gull family Laridae. They form a lineage with the gulls and skimmers which in turn is related to skuas and auks. Terns have a worldwide distribution. • Crested tern (Sterna bergii) • Lesser crested tern (Sterna bengalensis) • Black-naped tern (Sterna sumatrana) • Roseate tern (Stern dougallii) • Bridled tern (Sterna anaethetus) • Little tern (Sterna albifrons) The cuckoos are a family, Cuculidae, of near passerine birds. The order Cuculiformes, in addition to the cuckoos, also includes the turacos (family Musophagidae, sometimes treated as a separate order, Musophagiformes). • Shining Bronze cuckoo (Chrysococcyx lucidus) • White-bellied sea-eagle (Haliaeetus leucogaster) • Australian hobby (Falco longipennis) • Lesser frigatebird FREGATIDAE (Fregata ariel) • Leaden flycatcher MUSCICAPIDAE (Myiagra rubecula) • Peewee or Australian magpie lark GRALLINIDAE (Grallina cyanoleuca) • House sparrow PASSERIDAE (Passer domesticus) • Channel-billed cuckoo CUCULIDAE (Scythrops novaehollandiae) Reptiles Mammals == Known shipwrecks on the reefs ==
Known shipwrecks on the reefs
America a wooden ship of 391 tons and 108 feet in length. The vessel had been built in Quebec, Canada, in 1827, owned by James Gray and captained by Robert Donal. The vessel America had taken convicts to Sydney in 1829 and to Hobart in 1831. But while en route from Sydney to Batavia in ballast, the vessel struck a reef near Wreck Island and was wrecked on 20 June 1831. The crew launched two boats and eventually reached Morton Bay. The whaling barque Nelson and the Caledonia were involved in salvage of anchors, spars and rigging. Diana A wooden carvel schooner / brig of 103 tons and 70 feet in length built in Sydney in 1847 by the builder Ale and owned by C.L. Throck. The vessel ran aground on 1 June 1864 in the Bunker Group at the northwestern side of "middle island" (she was wrecked on Fairfax Island (middle island - Bunker group)) while loading guano. The Diana was a vessel engaged in guano mining. The Boomerang sited the wreckage on the northwestern side of "middle Bunker island" on 13 August 1864 and the crew went ashore and found part of the wreck had been salvaged with equipment and tents hauled onto one of the islands and the wreck had broken into two parts with many timbers strewn about on the reef salvaged but no sign of life. The crew had been rescued by the schooner Caroline (also reported by press as Eleanor Palmer). Pioneer Was wrecked on 12 March 1866 on Masthead Reef or Polmaise Reef. The 87-ton, two-masted schooner had been built in San Francisco in 1854. The Pioneer was a regular coasting schooner; during the 1860s she had been carrying a cargo of timber and no lives lost. All of the 14 passengers and crew landed safely on Masthead Island, then proceeded to Rockhampton. Cosmopolite was wrecked on 15 October 1866 on Masthead Reef/Polmaise Reef. The vessel was a wooden carvel Brig of 145 tons and 85 feet in length and originally named David Henshaw built in Newcastle in Maine and had previously been registered at San Francisco (1849) at it arrived in Hobart on 17 April 1851 after having been purchased by Mr Boys for £700 stg. When the vessel struck it had been in ballast and was salvaged with no lives lost. Bound from Sydney to Gladstone with cattle, she went ashore Masthead Reef and became a total wreck. Willing Lass sunk 5 July 1868 on Masthead Reef or Polmaise Reef Brigantine (Barquentine?) of 107 tons and 81 feet in length. Built in Nova Scotia by Jam in 1852 the vessel was struck by a squall during a voyage from Rockhampton to Richmond River under the command of McNeil. A course was set to steer her ashore when the wind dropped, leaving her helpless to drift onto the reef where rising seas soon destroyed her no lives lost carrying ballast shallow site. Jane Lockhart sunk between 11 and 17 December 1868 on Lady Musgrave Island / Heron Island / Masthead Reef or One Tree Island. The vessel was a two-masted schooner. Departed from Sydney with general cargo for Broadsound; and ran aground on Lady Musgrave Is; maybe on Heron Is or One Tree Island or Masthead Reef. Lost on a reef off Heron Island on the night of 17 December 1868. The crew took to the boat and safely reached the pilot station at Keppel Island. The vessel was originally stated as having hit at Lady Musgrave reef (most unlikely) later news reports claim wreck on Heron Island with some other reports mention the wreck on either One Tree Island or Mast Head. The vessel was built in 1861 at Ulladulla New South Wales and registered in Sydney with the Official number of 36858 and a Registered number of 9/1861 with a gross tonnage of 80 tons and 82 feet in length Hannah Broomfield a brigantine was lost on 30 April 1872 in the vicinity of the northern edge of the Capricorn Islands Most of her cargo and gear was recovered and the vessel was later refloated from Broomfield Reef but some time later wrecked in New Zealand in 1880. Built in the Tweed River of New South Wales in 1865 and registered in Wellington she had a gross tonnage of 120 tons and was 90 feet long Polmaise was a barque which hit Polmaise Reef off Masthead Island on 2 February 1873. She was outward bound from Rockhampton for London with a general cargo the vessel was subsequently salvaged. It is believed that the wreck site has been found and it lies in shallow water. The vessel struck the reef and remained fast on falling tide. The master and most of the passengers left in the pinnace to obtain assistance, leaving the mate in charge. The Polmaise After which the reef in named was a wooden Barque of 753 tons and 171 feet in length was built by Ale in Dundee England in 1853 Norna On 15 June 1914, near Masthead Island the 89-ton two-masted wooden Schooner built at Brooklyn, New York in 1879 went aground. Cooma was a steel passenger steamer of 3839 tons. She had a triple-expansion single screw and had been built 1907 for Howard Smith Line 330 x 46 x 21.4 ft. While running from Brisbane to Cairns with passengers she ran gently on to North Reef near Heron Island, Queensland, 7 July 1926 and sent out an S.O.S call. The S.S.Burwah responded to her call and rescued her crew of 84 and 200 passengers. After several unsuccessful salvage attempts she was abandoned to the underwriters it was later gutted by fire on 26 January 1927. She now lies broken up and scattered over the reef and a few beams and machinery parts in the coral in 4 metres of water her boiler remains visible on the beach near the North reef lighthouse. Joyce a 42-foot wooden motor vessel struck the southeast corner of Masthead Island on 4 April 1927. Valante 28 January 1957 Masthead Island. Kokotu motor vessel struck a reef off Lady Musgrave Island during cyclone Emily, 1 April 1972. ==See also==
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