Lady Musgrave Island Reef (23-082) Guide to Permit Delegates Last Updated January 2007
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Lady Musgrave Island Reef (23-082) Guide to Permit Delegates Last updated January 2007 This Guide to Permit Delegates contains further information on the values and use of the site as well as process and background to developing the site management arrangements for Lady Musgrave Island Reef. It also provides guidance for permit delegates regarding moorings and daily operations at Lady Musgrave Island Reef. The Guide should be read in conjunction with the Lady Musgrave Island Reef Site Management Arrangements (including the map) available on the external Great Barrier Reef Marine Park Authority website. Part A summaries the strategies, while Part B contains the background information. Part A - Strategies 1. No Anchoring Area A No Anchoring Area (NAA) has been designated in the south-western section of the lagoon, approximately 500-700m from the cay. The NAA boundary terminates close to the cay to allow for the anchoring of small and/or tender vessels in all tidal conditions. It includes some of the most popular snorkelling sites, including “Coral Bay” and other small bays and bommies along the western wall of the lagoon that have high coral coverage. The NAA also ensures that users of the site can adequately and safely access the cay by preventing vessels from obstructing the cay’s access points. 2. Vessel Loading Area A Vessel Loading Area has been designated adjacent to the National Park sign and shelter located on theSuperseded north-eastern side of the cay. The Vessel Loading Area is designed for the express purpose of loading and unloading passengers and cargo. The Vessel Loading Area is a no anchoring or standing area to ensure vessels do not prevent access to the cay. The beach and shallows adjacent to the Vessel Loading Area and other parts of the cay can be used for tenders that will be anchored or beached for some time. Markers indicating the location and purpose of the Vessel Loading Area will be installed in the area. 3. Cay Access Channel A Cay Access Channel has been designated to allow for unhindered access to the cay. In conjunction with Marine Safety Queensland, the Queensland Parks and Wildlife Service (QPWS) are progressing a speed limit of six knots for the Cay Access Channel. Buoys and appropriate signs will mark the Cay Access Channel. 4. Permitted Moorings The installation of permitted (private) moorings will be considered in all locations at Lady Musgrave Island Reef except within the NAA. A trigger limit of 18 moorings has been set for Lady Musgrave Island Reef. Of these 18 moorings, five will be reserved for each of the two daily operations (total of 10) to be used in conjunction with, and adjacent to their primary site. Moorings will be allocated on a first come, first served basis. Allocation will only be in cases where there is a demonstrated need, for example for regular operators to the area, where circumstances identify that allocation of a mooring is appropriate to improve management in the area. Moorings will not be allocated to speculative applications and applications need to be supported by specific location and design information. In accordance with the GBRMPA Moorings Policy – it is a condition on the permit that the permittee must install and operate to the permitted mooring within six months of the permission being granted, unless otherwise advised in writing by the Managing Agency. 5. Daily operations and large structures The number of daily operations allowed within the NAA at Lady Musgrave Island Reef is two. Consideration may be given to other operations requiring more frequent than 2 in 7 access provided they operate to the more remote parts of the lagoon and do not access the NAA or the cay (currently no Commercial Activity Permits are available to access the cay). Examples of such operations include overnight or extended dive operations. The maximum number of pontoons that will be granted at Lady Musgrave Island Reef is two, and will only be granted to a daily operation. Moorings and other facilities, such as snorkelling marker buoys, floats, float lines and guide ropes, associated with the pontoons will generally be contained within 200 metres of the pontoon and not scattered widely throughout the lagoon. Due to the crowding of the NAA, any future increasesSuperseded in the size of pontoons will require the pontoon to be located greater than 750m from the cay. As a general rule, they should be low profile (single story above the water line) to reduce the potentially negative impact on amenity for other users. 6. Aircraft operations The maximum number of take off and landings is twelve per day. These take-off and landings have already been allocated to current permit holders. The area for take off and landings is the south-eastern end of the lagoon. 7. Beach access Lady Musgrave Island Reef Guide to Permit Delegates - 2 - To preserve the amenity values of the site and limit the overcrowding issues on the beach, only those commercial tour operators who hold a current commercial activity permit for the national park may access the intertidal area. Superseded Lady Musgrave Island Reef Guide to Permit Delegates - 3 - Part B – Background 1. Introduction Lady Musgrave Island cay is a vegetated sand/shingle cay 13 ha in size and located on the south-eastern end of a 2930 ha reef, which is a large closed ring reef with a true lagoon. Lady Musgrave Island and Reef is at the southern end of the Bunker Group about 120 km southeast of Gladstone (refer Figure 1). Lady Musgrave Island forms part of Capricornia Cays National Park and contains one of the most popular campsites in the Great Barrier Reef Marine Park and World Heritage Area. It is a popular tourist and recreational area and the reef lagoon is considered a safe anchorage for vessels. Figure 1: Locality map 2. Natural ValuesSuperseded 2.1 Coral The corals at Lady Musgrave Reef are diverse and are one of the important values of the area. The coral resources around the reef can be grouped into three geographic areas; a) reef crest and slope, b) lagoon wall and inter-tidal, and c) lagoon floor and internal bommies. Generally the reef crest and slope can be described as having moderate to high coral cover and diversity. From the reef crest there is a steep drop to about eight to fourteen metres before coming to a relatively barren gentle reef slope that has occasional bommies with dense coral cover. Thirty to fifty metres from the reef crest, the slope increases falling away to in excess of thirty metres depth. The sheltered Lady Musgrave Island Reef Guide to Permit Delegates - 4 - western side of the reef, from the lagoon entrance to adjacent of the southern tip of the cay, is popular for tourism and recreational scuba diving. The lagoon wall on the eastern side is shallower with relatively low coral cover and diversity, whereas the western wall of the lagoon is deeper and has moderate to high coral cover and moderate diversity and is important for tourism and recreational snorkelling activities. The inter-tidal areas adjacent to the cay are generally low in coral cover and diversity as much of this area is exposed to storm damage and smothering by sand and sediment movement. An area to the south-south-west of the cay however has significant areas of coral regrowth and cover. Around the middle of the lagoon wall is a sheltered and popular snorkelling site known as “Graham’s Pool” which contains diverse branching corals and a very large Porites bommie. The internal floor of the lagoon has a high proportion of sand with some large scattered bommies that have moderate to dense coral cover. The bommies are popular for snorkelling activities because of their coral cover and related habitat for fish. An area in the south-west corner of the lagoon, between the lagoon wall and the current pontoon sites, contains some significant areas of staghorn corals and important bommies. This area, known as “Coral Bay”, is the prime site for activities such as snorkelling and glass bottom boat coral viewing. 2.2 Turtles Marine turtles are protected species, and the Recovery Plan of Marine Turtles in Australia identifies the threats to marine turtles and strategies that managing agencies should implement to reduce mortality of marine turtles. The breeding populations of the vulnerable green turtle (Chelonia mydas) and the endangered loggerhead turtle (Caretta caretta) in the Capricorn and Bunker Groups are of major international significance. The southern Great Barrier Reef green turtle population is genetically distinct and comprises the majority of green turtles that feed throughout eastern Australia. This green turtle population is currently displaying characteristics consistent with excessive loss of adultsSuperseded (Bowen et al., 1992, & Limpus et al., 1992). Lady Musgrave Island supports a moderate size green turtle rookery with between 200-400 females laying eggs each year in the December to January period (Buck, 1999). The major breeding and nesting areas for loggerhead turtles in the southwest Pacific Ocean region occurs in Queensland, with one of the key locations being the Capricorn and Bunker Group. Although the primary nesting beaches are at Tryon, Erskine and Wreck Islands, scattered nesting occurs throughout the Islands. Lady Musgrave Island supports a minor rookery with a stable but low nesting population. A small number of adult loggerhead and green turtles are permanent residents in the lagoon and use the site year-round for feeding. Lady Musgrave Island Reef Guide to Permit Delegates - 5 - From December to April, turtle hatchlings emerge from the nest and make their way down the beach using reflected starlight and moonlight off the sea to guide them to the sea and away from the shoreline and reef.