Salt marshes
*
Mangroves
*
Littoral rainforest
Rainforests are characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforest can be classified as tropical rainforest or temperate rainfores ...
s
*
Turpentine forests
*
Lagoons
*
Beaches
In 2001, the mangrove forests of Towra Point were described as varying in width between tens and hundreds of metres and largely consisting of the grey mangrove ''Avicennia marina'' with the river mangrove ''
Aegiceras corniculatum
''Aegiceras corniculatum'', commonly known as black mangrove, river mangrove, goat's horn mangrove, or khalsi, is a species of shrub or tree mangrove in the primrose family, Primulaceae, with a distribution in coastal and estuarine areas ranging ...
'' growing in patches along the edge of the forest closest to the landward edge.
Species
Towra Point Nature Reserve is home to many endangered, vulnerable, protected and exotic species. This list is from the NSW Government's Environment and Heritage department website – a comprehensive listing, including numbers, scientific names, and protection status, can be found at this link.
Birds
Amphibians
Mammals
Reptiles
Plants
Human effects
The
ecosystem surrounding Towra Point has been impacted as a result of human interaction.
Positive effects

Humans can maximise the area of healthy, functioning
intertidal wetlands by minimising their impacts and by developing management strategies that protect, and where possible rehabilitate these ecosystems at risk.
The following are positive ways of trying to protect or rehabilitate intertidal wetlands.
* ExclusionThose responsible for the management of wetland areas often facilitate public access to a small, designated area while restricting access to other areas. Provision of defined boardwalks and walkways is a management strategy used to restrict access to vulnerable areas, as is the issuing of permits whilst visiting Towra Point Nature Reserve.
* EducationIn the past, wetlands were regarded as waste-lands. Education campaigns have helped to change public perceptions and foster public support for the wetlands. Due to their location in the
water catchment area, education programs need to teach about total catchment management programs. Educational programs include guided tours for the general public, school visits, media liaison, information centres, conference presentations, interpretive signage, publications and facts sheets. Staff should also include education officers.
* Actiontoo little is known about the intertidal wetland system to successfully reinstate all natural conditions. Management plans focus on the rehabilitation of the site and the removal of human-induced stresses. For example,
fox
Foxes are small to medium-sized, omnivorous mammals belonging to several genera of the family Canidae. They have a flattened skull, upright, triangular ears, a pointed, slightly upturned snout, and a long bushy tail (or ''brush'').
Twelv ...
and
rabbit
Rabbits, also known as bunnies or bunny rabbits, are small mammals in the family Leporidae (which also contains the hares) of the order Lagomorpha (which also contains the pikas). ''Oryctolagus cuniculus'' includes the European rabbit speci ...
baiting, removal of
weeds (at Weedy Pond).
* DesignDesign interventions have proved successful in minimising sources of natural stress. At Towra Point Beach, for example, there is a sandbag wall to help prevent salt water from leaking into the fresh-water Towra Lagoon.
* Legislation
Legislation and regulations are used to protect Towra Point Wetlands. Conventions that Australia has signed in regard to Towra Point Wetlands are the
Ramsar Convention, the
Japan–Australia Migratory Bird Agreement
The Japan Australia Migratory Bird Agreement (JAMBA) is a treaty between Australia and Japan to minimise harm to the major areas used by birds which migrate between the two countries. JAMBA was first developed on February 6, 1974 and came into f ...
and the
China–Australia Migratory Bird Agreement
The China–Australia Migratory Bird Agreement (CAMBA) is a bilateral treaty between Australia and China that aims to protect migratory birds and their environment between the two countries. Throughout all six Articles, the treaty defines what a ...
(CAMBA). Legislation that Australia and New South Wales have passed in regard to Towra Point Wetlands are the Australian Wetlands Policy, the New South Wales Wetlands Management Policy (1996) and the State and Environmental Planning Policy 14 on Coastal Wetlands.
Negative effects
* Changed wind patternsdue to
high-rise near some wetland areas e.g.
Bicentennial Park South, at Rockdale.
* Alteration of water flowsthrough construction of roads.
* Removal of resources for urban and industrial land usesThese also increase turbidity and toxins in the water supplied to
mangroves. (The removal can also result in changed
energy flows and
nutrient cycles, affecting
food chains for both sedentary and migratory fauna)
* Replacement of wetland areasfor parks, playing fields or pasture.
* Destruction of
sea grassesin areas adjoining wetlands can affect energy flows and nutrient cycles as species levels will be affected.
* Introduction of exotic speciese.g. foxes, rabbits, sheep, cattle, pigs. – change energy flows and nutrient cycles. Birds are particularly affected, for example the
little tern.
* Indirect influences from adjacent sitese.g. weed infestation (lantana – Towra Point) – carried into the wetlands by horses from the nearby stables.
* Tramplingfrom illegal access
* Threat of oil spills
Kurnell Refinery
The Kurnell Refinery was a crude oil refinery located in Kurnell on Botany Bay, New South Wales, Australia. It had a refinery capacity of . It was operated by Caltex Australia, and owned by the Chevron Corporation.
History
Construction bega ...
near Towra Point, 31 oil spills between 1957 and 1987 averaging .
* Recreational horse ridingon the reserve and unsupervised recreational use of the reserve (e.g. dog walking)
* Boatingdisturbs wildlife in the park, and creates pollution.
* Fishingkills fish, which affects the
food chains operating within the reserve.
* Erosion of Towra Beachdue to wave refraction from the Sydney Airport runway which causes the freshwater Towra Point Lagoon to become saline
* Fragmentation of the reserveby private land ownership
* Bay developmentin general, including the
Sydney Airport
Sydney Kingsford Smith Airport (colloquially Mascot Airport, Kingsford Smith Airport, or Sydney Airport; ; ) is an international airport in Sydney, Australia, located 8 km (5 mi) south of the Sydney central business district, in the ...
runway and the oil refinery. There have also been concerns that the
Sydney Desalination Plant will impact negatively on the reserve.
* Illegal rubbish dumpinghas occurred both in the reserve and near the entrance. In late 2004, a large amount of dumped
asbestos
Asbestos () is a naturally occurring fibrous silicate mineral. There are six types, all of which are composed of long and thin fibrous crystals, each fibre being composed of many microscopic "fibrils" that can be released into the atmosphere b ...
was discovered.
* Land destabilisationdue to extensive mining of the larger dunes on Towra Point during the twentieth century it has been suggested that if the site was ravaged by strong enough storms breaks in the point could occur and breach the gentle lagoons of Towra Point.
* Runoffdue to most of the surrounding land being used for urban and industrial purposes.
Stormwater from the
Kurnell Refinery
The Kurnell Refinery was a crude oil refinery located in Kurnell on Botany Bay, New South Wales, Australia. It had a refinery capacity of . It was operated by Caltex Australia, and owned by the Chevron Corporation.
History
Construction bega ...
runs through the Ramsar-listed area of Towra Point Nature Reserve.
*
Subsidence
Subsidence is a general term for downward vertical movement of the Earth's surface, which can be caused by both natural processes and human activities. Subsidence involves little or no horizontal movement, which distinguishes it from slope move ...
near the walkway, subsidence has been recorded, which has encouraged the establishment of mangroves in the upper swamp.
Management of the reserve
Traditional
The traditional objectives for the management of wetland areas were built around the use of wetland resources for food, shelter and tools.
Grey mangrove Grey mangrove may refer to either of two species of mangrove:
* ''Avicennia marina'' - occurring around the Indian Ocean and into the western Pacific Ocean as far as New Zealand
* ''Conocarpus erectus
''Conocarpus erectus'', commonly called butto ...
wood, for example, was used to make shields, shells were made into fishing hooks; and marine animals were used for food.
Contemporary
* Identify management goals and objectivesToday management plans for wetlands focus on the preservation and sustainable use of sites for
recreation
Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are often done for enjoyment, amusement, or pleasur ...
,
conservation and
education purposes. This may involve some
exclusion zones but many areas are open to recreational and educational activities.
* Define management unit and boundariesThe "management unit" for many intertidal wetlands is often difficult to define because of the large number of
stakeholders. For example, the Towra Point wetland has input from
NSW National Parks & Wildlife Service, NSW Fisheries,
Sutherland Shire Council, Friends of Towra Point and recreational users.
* Develop and implement management plansAn intertidal wetland is a dynamic system. As our knowledge of ecosystems has increased community attitudes have changed. Communities are now demanding that these ecosystems are protected and effectively managed.
Care has been taken to develop management plans that are both realistic and flexible. They need to take into account scientific and technological advances, changing social and political attitudes and variations in the level of funding. Management plans also need to be consistent with Australia's international obligations under JAMBA, CAMBA and Ramsar.
Applicable legislation and international environmental law
International environmental law
Ramsar Convention (1971),
JAMBA (1981),
Bonn Convention (1983),
CAMBA
Camba is a word historically used in Bolivia to refer to the indigenous population in the eastern tropical region of the country, or to those born in the area of Santa Cruz, Beni, and Pando. Nowadays, the term "Camba" is used predominantly to ...
(1988),
ROKAMBA (2006), the
Partnership for the Conservation of Migratory Waterbirds and the Sustainable Use of their Habitats in the East Asian–Australasian Flyway (2006),
Convention on Biological Diversity (1992).
Federal environmental law
As the Towra Point area is Ramsar listed, this attracts the operation of the federal ''
Environment Protection and Biodiversity Conservation Act 1999'' and regulations. Section 17B provides that a person is guilty of a criminal offence if (a) the person takes an action
ee:s.523 and (b) the action results or will result in a significant impact on the ecological character of a wetland; and (c) the wetland is a declared Ramsar wetland. Towra Point Nature Reserve is listed a component of
Littoral Rainforest and Coastal Vine Thickets of Eastern Australia, a critically endangered ecological community under the
EPBC Act.
["Coastal Dune Littoral Rainforest S_RF06" (pp.21-23) in Office of Environment and Heritage (2013) 'The Native Vegetation of the Sydney Metropolitan Area Volume 2: Vegetation Community Profiles.' Sydney]
State environmental law
In addition to land use planning law, the following Acts are applicable ''
National Parks and Wildlife Act 1974'' (NSW), ''
Environmental Planning and Assessment Act 1979'' (NSW), ''Fisheries Management Act 1994'' (NSW), ''
Threatened Species Conservation Act 1995
The ''Threatened Species Conservation Act 1995 (TSC Act)'' was enacted by the Parliament of New South Wales in 1995 to protect threatened species, populations and ecological communities in NSW. In 2016 it was replaced by the '' Biodiversity Co ...
'' (NSW)
and applicable SEPPs (e.g. State Environmental Planning Policy No 39—Spit Island Bird Habitat). Following a review, several SEPPs were repealed in favour of using Local Environmental Plans.
Towra Point Nature Reserve has been listed as being part of the
Coastal Dune Littoral Rainforest ecological community, an
endangered ecological community under the
TSC Act
The ''Threatened Species Conservation Act 1995 (TSC Act)'' was enacted by the Parliament of New South Wales in 1995 to protect threatened species, populations and ecological communities in NSW. In 2016 it was replaced by the '' Biodiversity Con ...
.
References
Further reading
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*
External links
Sutherland Shire Environment Centre - Towra Point(the virtual tour is excellent)
Sydney University Excursion
{{Ramsar sites in Australia
Ramsar sites in Australia
Nature reserves in Sydney
Endangered ecological communities
Geography of Sydney
Kurnell Peninsula
Protected areas established in 1982
1982 establishments in Australia
Sutherland Shire