Showing posts with label ecology. Show all posts
Showing posts with label ecology. Show all posts

06 November 2010

Tweets on sharing the planet with other species

Biodiversity or kicking others off the planet:
#Endangered #orchid - #Habitat loss due to #clearing for more highway for more cars http://tinyurl.com/2dtqf2u #biodiversity #NSW Bulahdelah 05222010 2

'#Biodiversity summit won't stop anyone trashing the #planet' http://tinyurl.com/2e2e6p6 #CBD #convention #diversity TEEB monetize #nature 04112010

'A mobile command centre for maiming #wildlife' http://tinyurl.com/26ufxhf combat #biodiversity aussie utes #militarization_of_civil_society 05112010

Thing happen where #hunting & #fishing enthusiasts #encroach on #wildlife #habitat http://tinyurl.com/265btjt #poaching #National #Park meat 03112010

It is spineless to kick many of the world's vertebrates off the planet http://tinyurl.com/2fjyjlo #biodiversity #monoculture species #legacy 27102010

'More species slide to #extinction' BBC 2010: http://tinyurl.com/2fsgr49 2006: http://tinyurl.com/2blorrl #biodiversity habitat #change poss 27102010

"Habitat loss overexploitation pollution disease & human induced climate change are the factors driving extinctions" http://tinyurl.com/2d6hwro 21102010

Mass #extinction as a strategy Obliteration of the planet's species at a rate at least 1,000 x faster than normal http://tinyurl.com/2csybv4 10202010

From failure to #failure #Copenhagen here, #biodiversity (#CBD) there http://tinyurl.com/3yfllaz stop #extinction stop #habitat grab dysfctn 19102010

The Nagoya Access & Benefit Sharing Protocol PDF http://tinyurl.com/2b3d3ur #biodiversity share cake #biopiracy #CBD #COP10 #ABS North-South 19102010

"We are about to reach a threshold beyond which #biodiversity loss will become irreversible” http://tinyurl.com/32oztpk mortgaging kids future 18102010

Wildlife Human Interface
Ranger rescues #crocodile from people http://tinyurl.com/2b2h3uo Sanctuary Lakes Palmerston #biodiversity baby freshie #wildlife crime au 19102010

#North Head #wildlife without a billboard for #roadkill: Squashed by #motorists today: 1 Ringtail Possum & 1 Bearded Dragon SydneyHarbNatPrk 05222010 2

Birds
Rainbow #Lorikeets feeding on red Callistemons, Sulphur-crested #Cockatoos feeding on the seeds of Brush Box #birds urban #trees #Manly 28102010

Nice to hear the #koel overpower the roaring #traffic for a while audio: http://tinyurl.com/388a665 #birds #pollution #Manly Eudynamys 27102010

Sub-Antarctic #birds killed with #brodifacoum on #Macquarie Island http://tinyurl.com/2d6ajat do no harm #restoration human-introd predators 23102010

On the use of #poison to eradicate #pests: 400 native #birds killed, #Macquarie Island http://tinyurl.com/2awbxke oops #invasive sp Tas #Nps 23102010

#Shelly Beach tide is blooming red #HABs Four #mutton #birds dying on #Manly Beach - out of habitat in long #migratory journey 22102010

The many dead black #birds on #NSW beaches? Think about their lack of #habitat in their transequatorial #migration short-tailed #shearwaters 22102010

#Pelican swallowed three fishing hooks & got entangled in #fishing #debris http://tinyurl.com/29bxqx9 Ban fishing TAKE @ urban coasts #birds 10201020 3

The Butcherbird's song http://tinyurl.com/2fg6msw is drowned out by the ubiquitous debris blowers of Manly http://tinyurl.com/29fftlu #noise 19102010

Manly Penguins
Nice image of a #Little #Penguin #swimming Hope no fossil fuel vessel will shred it apart http://tinyurl.com/2equq6t #Manly #boats #habitat 28102010

Forests - Habitat
Debt ? Just flog off the national ancient #forests http://tinyurl.com/349xz4j #privatisation #climate change #co2 #habitat #wildlife 25102010

Clearing the tropical #rain #forests, destroying the GBR #reef produces the BIG DRY http://tinyurl.com/2453xut RT @mongabay #Australia diy desert 16102010

Bio-diversity vs Mono-culture: Wildlife or exotic companions? Pets
Will Australians invest in #biodiversity or a mono-culture of dogs & cats? http://tinyurl.com/3733upu Extinction http://tinyurl.com/35asr2q 28102010

#Dogs - from #meat to status symbol http://tinyurl.com/2auffju #consuming #pet_owners #feces city #energy #dog_run #wildlife out #pets in 25102010

Invasive species
The #rabbits on #North #Head #NPs look like #pet bunnies & behave like lost family members #erosion #invasive #species #degraded vegetation 03112010 2

Conservation - Do no harm
Sub-Antarctic #birds killed with #brodifacoum on #Macquarie Island http://tinyurl.com/2d6ajat do no harm #restoration human-introd predators 23102010

On the use of #poison to eradicate #pests: 400 native #birds killed, #Macquarie Island http://tinyurl.com/2awbxke oops #invasive sp Tas #Nps 23102010

Only about 2% of the Kimberley state waters will be protected while 98% is still open to mining & fishing http://tinyurl.com/27vqt3n #marine 22102010

Palau can afford its waters to be a #marine mammal #sanctuary for the protection of #whales, #dolphins & #dugongs http://tinyurl.com/2d2l6eb 26102010

"The number of #marine protected areas fall far short of what’s needed 2 save the world’s #oceans" http://tinyurl.com/2uv4u9f CBD marine prk 20102010

Habitat for Flora & Fauna or rec area National Parks
1. they open up NSW #National Prks to bikes, then to hopping mountain bikes, next it'll be the landscape shredder http://tinyurl.com/2fgmyls 18102010

Vandalising the Enviroment - Crimes
"Many #environmental #crimes are dealt with by warning letters or infringement notices." http://tinyurl.com/26wepcu NSW Australia #wildlife 23102010

Images: Shark finning industry, Coffs Harbour, NSW
Healthy gulls with fresh filtered water at Manly

>>More
Tweets on the ocean marine ecosystem

01 July 2009

Manly Beach Drift 'wood' - July

A monthly summary of what has washed onto the shore or beach through the winds, tides, waves or human action. Marine debris, flora and fauna, dead or alive:
010709Plovers reclaiming the beach.
Glass, as every day.
Erosion: The southern end of the beach is a building site. Two earth-moving machines and some 11 workers sifting through the rubble. Sandstone, basalt, cement garbage, iron bars, plastic/fibrous mats, that have been dumped there and now have to be hand-picked. Lines of vehicles parked on walking parade.

020709
Erosion: Southern end of the beach manufacturing: fencing down, rubble largely removed. Diesel machines still pumping on the beach and pedestrian parade.

An unusual amounts of shells along the northern end of the beach. Ocean acidification thinning shells? One look along the beach, it is 4x4s crawling, with the odd rocket pumping CO2.
A large tanker hovering on the horizon. A motorboat racing just meters from the surfies' lineup towards the Cabbage Tree Aquatic Reserve to 'park'.Glass, splinters, broken bottles, as every day. Image displays the average daily crop of sharp health hazards on a beach.

A flock of Sulphur-crested Cockatoos (Cacatua galerita) feeding on the ground seeds of the Norfolk Island pines (Araucaria heterophylla). Two dogs have just been emptied on the same bit of lawn. Usually people: toddlers, bootcamp training clients etc roll on this turf.

Illegal dogs at the Queenscliff end daily. Dogs & motors in summary.

03709
Erosion: 'Nature' and many labourers hand raked the beach for the last debris/rocks at the southern end.
Daily illegal dog on the beach
A lot of glass collected. All forms of styropore at the northern end of the beach.

The daily ocean-going ship hovering on the horizon. Elsewhere they now have " regulation mandating that all ocean-going vessels within 24 miles of the state's coast must use cleaner burning low-sulfur diesel fuel". Less premature deaths from air pollution/smog. Less acidification of the oceans.
Manly will probably soon give up "choking on noise and fumes of the international combustion engine" and be declared car-free. Breathing at Manly Beach and 'immersive Manly village' will be possible.

Fisheries without fishes, tourism without reefs, beaches and wildlife is not unthinkable. The collapse of the ecosystems would turn the present economic crisis into a hiccup.

060709
Highlight was a pod of dolphins upstaging the surfies by leaping high out of the surf.

For some 3 million years they were at home in their coastal habitat. Now this aquatic sphere is claimed by our species. 'Flipper' becomes bait, 'bycatch' or it has its habitat degraded by us. Marine infrastructure clutter up the coast, anthropogenic noise pollution from motor boats, toxins, waste and (fishing) garbage degrade the ocean even further. Eating 'our' tuna and squid the 'competitors' are often turned into bait. Many die from entanglement and ingestion of fishing gear which is so often found at Manly beach.

There are many Eora depictions of Bottlenose dolphins engraved into Sydney sandstone. Let's continue to share the ocean with these smart marine mammals!Image: Google Maps: Manly Beach, pipe, North Steyne/Raglan St.

Five Great Cormorants (Phalacrocorax carbo) flying north, leaving bird-unfriendly Manly behind.
A flock of Sulphur-Crested Cockatoos feeding on the lawn under the pines on cones. Only the dogs posed a danger to them.
Two large dead fish at the beach. One a Porcupinefish as so often.

The appearance of the beach seems to be normalising.

070709
Crested Terns, Crows and Sulphur-crested Cockatoos
Divine cloud formations, sun and rain. Permanent tropics in Sydney?
Again a new lot of plastic junk: Drink bottles, tops and a lot of polystyrene in the shape of orecchiette pasta. At the sandstone wall a small 'run-off' pipe exuded small polystyrene balls with a black discharge on to the beach.

At the horizon, two navy ships hovering. Scary to think that in an event of an oil spill, the 'clean-up' costs could not be recovered as it might "hurt Australia's reputation."

A large noisy (navy) helicopter swooped a couple of times along the beach /surfers. The 'manned scarecrow' chased all birds away. No marine mammals were in sight with that noise. Time to switch to 'unmanned' air vehicles in a regulated airspace.

080709
Manly Beach going to the dogs...A dog owner took their dog in bright daylight illegally for a walk all along the shoreline of Manly Beach. Black plastic dog feces bags blowing on the dunes. On the walking parade a dog defecated in a puddle. The rain drained all untreated excrement down a pipe onto the beach. One would think, that with an explosion of the dog population, corresponding enforcement services are being made available. There is supposed to be a 'litter guard', where is the canine/feces guard? What is public health?The usual amount of glass on the beach. Maybe there will be less in the future, as premises of alcohol merchants will be regulated. Drinkers will no longer be trusted to handle glass after midnight in some places.

Re the daily ocean-going vessels at the horizon: Elsewhere a Clean Air Act will set standards for engine and fuel to improve the air quality, save lives and the environment.

090709
Manly Beach is a unique parrot beach: White cockatoos during the day, lorikeets in the afternoon and black cockatoos occasionally. Echos of some 55 million years of a bio-diverse heritage. Locals facilitate captive non-Australian animals.

Junkspace: Plastic in the form of a lot of drink bottles, toys, lighters, caps/lids and 'party balloons'. Differently shaped polystyrene packaging bits today.
The usual crop of freshly cracked glass.
The 'run-off' pipe around Raglan St. has a distinct odour of miasma.

Tourist buses with idling motors spill their customers on to the beach. Photo, litter, off.
Yet again, another motorboat racing along the lineup and then, as they all usually do straight to the Cabbage Tree Bay Aquatic Reserve to 'park'.

Erosion: The southern end of Manly Beach is still fenced off. Rocks and black plastic mats are scattered over the beach.

100709
Junkspace: An unusual large amount of packaging from a wasteful 'throw away' society. Plastic bottles, styrofoam cups and a very large number of 'disposable' domed plastic lids and foam cups. A large array of 'one-mouthful edibles wrappings'. Carry-out trays are the latest to be dumped at the beach. Maybe the cafes/crèche are too unbearable? If the sale of these wasteful items can not be prohibited or regulated, then it could at least be taxed.
Litter in the sky: A large clump of 'party balloons' released and stuck in + 25 m high pines. The entangled strings pose a hazardous environment for birds/wildlife. What form of 'waste management' will remove the plastic junk: kites, balloons etc out of the 'littered' giant pines?

Sulphur-crested Cockatoos
are boldy grazing the pine promenade for seeds, hoping, that all dogs are on a leash.
Daily dog illegally on Manly beach.


130709
Diesel ploughing at the Queenscliff end. More diesel fumes belching from train-like trucks and vehicles 'moving' along road-side Steyne cafes. Other than deadly diesel fumes, the ocean did not smell of kelp and salt.Erosion: Rocks, cement junk and black plastic mats still jumbled up on the Sth.Steyne end of the beach. The $3,000,000 building site 'stabilising the sea wall' all along Manly beach is supposed to be completed by 2010. Holding back the sea level rise for the "the long-term viability of the local economy".
A walled off rising ocean
, caused by anthropogenic CO2 emissions, might be a quick fix instead of an Integrated Coastal Zone Management that is interdisciplinary. Taking the needs of the coastal ecology into account and reducing CO2 emissions might be a sustainable prevention of a rapid retreat.
Image: Katsushika Hokusai , The Great Wave off Kanagawa , Tsunami via Zeno

140709
Large waves, calling plovers and sunshine.

The dumped rubble of cement, plastic mats and sandstone is still exposed from the erosion from the Corso to the southern end of the beach.
The rubble and steep sandcliffs provide a welcome family entertainment in the school holidays. There are attractions like throwing the rocks around. Digging up the metal beach sign and converting it into a funfair guillotine is all part of recreation. Digging diarrhea sandcastles has branding potential as a theme park. If the kids are bored with chasing seagulls, then there are attention-grabbing helicopters hovering over the beach or the many planes overhead going to desirable locations.A last look at the historic sandstone wall, studded with life and remnant dune vegetation before the disaster preparedness wall will be errected. Will it equally be studded with an abundance of pvc pipes draining dog feces, lawn chemicals etc onto the beach? Will the sandstone stay? Will they get rid of the Asthma Weed?

The daily dog ON the beach of course. A procession of packs of dogs on the esplanade. Mostly driven in suvs to Manly Beach to be emptied. A minimum of three harnessed dogs, or at least one each on display. The white fluffy thing is so 'yesterday' and serious hunting animals are 'in' this season: Doberman, Great Danes etc. Fashion dictates and the old models get churned into a dog pound to get pulped or released into 'freedom'.

Most walkways are parked out with service trucks/utes from uncountable building sites. The noisy 'green machine' seems to go for peoples' toes sitting on benches at 10.40 am.

Broken glass of all colours, shapes and sizes.

170709
Small to fist-size rocks along the southern end of the beach have emerged since the erosion. Ideal for toe-stubbing or family target practice.

The butt littering was overwhelming. A lot might have washed down from the roads with the rain. A couple of plastic lighters thrown in.
Styropore disintegrating into bubble-sized pieces. Broken glass

At the beach wall, dogs urinated on the wall/steps and the rain washed all down on to the beach sand.

Sulphur-Crested Cockatoos picking seeds from under the cars and are in danger of being run over by speeding cars.

190709
The beach stairs at Victoria Pde/ Sth. Steyne are hollowed out from underneath. Deep water and surf hits the stairs.200709
Severe erosion of the beach stairs at Victoria Pde/Sth Styne. Waves continue to undermine the stairs' foundations, distributing rubble and fibrous mats along the beach. Deep surf is pounding this area. Up to fist-size rocks have been dislodged and cover the previously sandy beach from the Manly Surf Live Saving Club to Raglan St.

An unusual amount of freshly cracked glass, a post weekend crop?
Some unusual shells at the northern end of the beach.

230709

T h r e e dogs on Manly Beach illegally. A regular male dog owner walks along the entire esplande throwing a ball ONTO Manly Beach which his brown Australian Kelpie is fetching. A Doberman tied to the bottom of the stairs preventing access to the public. The daily dog at Queenscliff. No enforcement.

An angler set up multiple rods and clutter at the beach. Joggers got entangled in the 'loine'. Beach rage over disputed legitimate activities on a crowded beach. A health hazard! Time to make it a NO-TAKE area.Plastic 'take away' junk is increasing at a rapid rate. Plastic lighters and glass.

A lot of cut garden refuse. Endless leaves which are blown by petrol-powered 'leaf' blowers into the the gutter. Seen all over Manly the owner/ contractor blows the debris from the private proverty onto the public pathway/ road and finally into the gutter. Council workers do it too. All privatise the soundscape. The collected works are then flushed down the pipes onto Manly Beach and get sloshed back up onto the sand. It takes a lot of petrol and noise to achieve this state of 'tidyness'.

In the sky three light aircraft affording their paying clientele swooping views of Manly surfies. From the road (Steyne) roaring building noise as the road is cut open.

240709
Two speeding jet skis (tautology) racing along Manly Beach. This could be life-threatening for the frequent long distance swimmers. Little Penguins feeding on the upper layers of the ocean and other marine mammals are also endangered by this petrol-fuelled activity.

Manly Beach as cheap garden tip? Rich in debris and garden refuse after a night's rain. Most large pieces are cuts from an iconic sub-urban palm: The Cocos palms (Arecastrum romanzoffianum), a weed. The rest is flushed or blown down to the beach with the air of petrol from the streets of suburbia. (see 230709 above)

The one-mouth plastic wrappers are rapidly increasing. Silencing devices to not get ones hands dirty? The odd plastic lighter.

The horizon looked uncluttered with an occasional 'bump' like a migrating Humpback whale. But then to allow jet skis and motorboats to speed is not very inviting for a large marine mammal mother and her infant. The time she needs to lift her breathing infant out of the water is often not granted in the motor-boat infested oceans. Many young have to die, or are 'put down' by 'benevolent' human beings after the freshly born and mother have been separated by noisy, speeding objects that criss-cross their migratory routes. Encroaching 'peep industries' also pose a danger.

A dead Rainbow Lorikeet on the beach. Either fed to death on sub-urban balconies and gardens. Or maybe a fox got it out of a pine?The daily illegal dog ON Queenscliff Beach. A lot of dog/fox turds left on the Esplanade lawn, awaiting rain to flush it down onto the beach sand.

290709
A dolphin pod swimming up and down Manly Beach today. The group consisted of ten dark individuals that swam in a tight formation to occasionally form a vivid hunting? circle. The access of these marine mammals to the surfline was only possible, because of an absence of hooning motorboats or jetskis.

Shells all along the beach.
A lot of freshly cracked glass and styropore bits.

Along the Esplanade:
A noisy building frenzy all along the beach.
Event advertising (small pieces of cloth) being hung into the pines with the aid of a suv and crane idling and parked on the footpath, as most 'service' vehicles do. An absurd idea of communicating events with an high emission footprint. The daily green machine, just sitting there idling and adding to the noise pollution.A lot of dog feces was left on the walkway by irresponsible dog owners, despite the machine cleaning. Many people stepped into it and smeared it along. The rest just runs down the stairs/ through the many pvc pipes onto Manly Beach. Just on the other side of the beach wall people rolled in the 'sand'.

But then it is 'just' a hygiene and enforcement issue compared to the large scale ecological vandalism being committed by Australia, depriving other species of a right to existence and leaving a degraded 'quality of life' for the ones to come.

See also Driftwood of:
June,
May, April, March, February, January, 2009

24 May 2009

Herbicide Use in Manly



Herbicides kill unwanted plants

Biocides "have been designed to disrupt biological systems, causing death to target organisms, such as insects or plants"

They have been used in warfare to make the leaves fall off the trees in the rainforest(Agent Orange). The damage was great on all life and some victims fought a class action lawsuit about the poisoning.

These chemicals are not just used in warfare for eradicating life, they can also be put to use as chemical weapons to remove unwanted plants for example.
Once a place industrialises, that is it relies on fossil fuel machinery and chemicals for 'vegetation control' then the costly “rapid knockdown ability” of these toxins saves the labourer from bending down and picking up a weed.

Lately there have been many signs of the use of such substances in public areas that are highly frequented by people, pets and wildlife.

At the end of Bower St at the Shelly Headland Loookout where some Bitou weed (Chrysanthemoides monilifera*ssp) needed to be 'managed' a whole swath of native plants are dead or dying: Mangrove Boobialla (Myoporum ssp.), NZ spinach (Tetragonia tetragonioides) and Saltbush (Enchylaena). All of the endemic flora provided habitat for native marsupials and birds. It appears to be a very inefficient 'by-kill'. The location is on the cliff's edge so runoff is an issue. Why the remaining woody shrubs and trees are butchered is another question.

Around immersive Manly Town many poles have that iconic Australian 'one grass' sprouting at the bottom. The same signs of herbicide death. Even at the beach, the vegetation at the sandstone wall also shows the same signs. A sign of surface runoff?

Who knows what the turf along the pines contains which children and dogs are rolling in. Both toddlers and dogs are low to the ground and stand to be in closer contact.

Council's website
was last updated in 2007 on the matter and reads:

"The aim of this plan is to meet the community’s general right to know about pesticide applications made to outdoor public places that are owned or controlled by Manly Council. The plan allows members of the community to take action to avoid contact with pesticides if they wish. Manly Council aims to ensure that pesticides are applied to public places in a safe, responsible and humane manner, minimising harm to the community and the environment."

In a more current document council mentions that "70 litres or less of herbicide is to be used annually".

  • How is the public informed?
  • How is information made available?
  • How can residents/visitors/pets reduce exposure to land or beach where hazardous chemicals have been applied or have run to?
  • Why aren' t there any signs?

A community of users might have certainty at the moment, but history has taught that the Precautionary Principle is always a good guide. The impacts on peoples' health, the well-being of pets or the environmental impacts will, as usual come years later.

Images:
1 & 2, Poles with dead grass in Manly town, close to Manly Beach
3 Dead vegetation at the beach stairs. Run off?
4 Various Mangrove Boobialla at
Shelly Headland Loookout dying.

Links
Endocrine Disruptors
Some Reasons to not use Herbicides
Glyphosate

Update:
040509
North Head , Lady Fairfax walk and lookouts also seem to be befallen by the great 'browning'. Weeds especially along the fences are doing well. Endemic plants are hit. Eutrophication down the cliff from the lookout.

260609
" Weed killer kills human cell... Used in yards, farms and parks throughout the world, Roundup has long been a top-selling weed killer. But now researchers have found that one of Roundup’s inert ingredients can kill human cells, particularly embryonic, placental and umbilical cord cells." Environmental Health News, 220609

Nora Benachour and Gilles-Eric Sralini, Glyphosate Formulations Induce Apoptosis and Necrosis in Human Umbilical, Embryonic, and Placental Cells, Chem. Res. Toxicol., 2009, 22 (1), pp 97–105 DOI: 10.1021/tx800218n Publication Date (Web): December 23, 2008

25 March 2009

Switch off the lights! Manly Light pollution

Posted by Picasa
Click the image for a larger version of the glare bombs
Switch off the lights, join other places that refrain from light pollution. Keep some of the life-supporting climate for others to come. Do not trap wildlife with artificial lights. Flooding the environment, the beach and the night sky is an expensive hazard for human beings too. Stop the waste and fossil fuel burning. Some NSW councils turn off their "non-essential lights, computers and air conditioning at noon on Friday."

> Reducing Light pollution
Light Pollution, Wikipedia
Neighbour friendly lighting

SydneyOutdoor Lighting Improvement Society

Update: Gimmick Day is over, cheap child amusement and attention focussing on 'tourist landmarks' in the MSM. After the dimming, 'business as usual' continues, now with a relieved conscience. Systemic failure stands in for lack of structural change. 300309

12 March 2009

Oil Spills, Ships and Readiness - The Moreton Island Case

The spill of toxins, explosives etc in Queensland is serious. More from the Moreton Bay Blog, Bayjournal


Australian Senator Discusses Oil Spill
Video via cheatah55

06 October 2008

Preventing 'Red Tides' at Shelly Beach, Manly

Shelly Beach is a small sheltered beach, facing Manly Beach. A coastal walkway, leads along the Cabbage Tree Bay Tree Aquatic Reserve to Shelly, which has one of the few small unbuilt headlands with native vegetation on it. Some of original cabbage tree palms were replanted as they once fringed the watercourses leading to the beach. The headland leading back to Manly beach has been undergoing intense development for years. The beach facilities are also under intense demand.

Dead Fish, how come?
Last week (02 & 03.1008) many dead puffer fish and a moray eel were washed up on Manly beach. We assume, these 'cave dwellers' were from the 'Aquatic Reserve'. On the 051008 the first blooms of an apparent red tide was visible at Shelly Beach. On the 021008 "a mysterious red sludge", believed to be red algae bloom was found on a beach in the Manly area, at Clontarf.(Image)

Nice Beach as a drain, growing harmful bacteria?
The walkway from Manly beach to Shelly beach along the aquatic reserve is studded with old, often decayed pipes of all sizes, draining the dense sub-urban development on top of the headland, down into the little bay/'reserve'. The mossy green rocks are the sure-sign for 'rich run-off'. The little creek behind the restaurant, has spaghetti-like pipes all leading into it and straight into the beach. Most of the properties, strain to grow water and nutrient intensive foreign vegetation. A large paved car park on top of Shelly, is increasingly denuded, leading to even more run off. Numerous dogs on the beach and unleashed along the walkway help to contribute their untreated feces into the adjacent cabbage bay aquatic reserve. Sydney on the whole “dumps a billion liters of sewage into the ocean every day...” (Maude Barlow, Blue Covenant, 08 p28.) Habitat degradation, generous run off and extreme warming of the atmosphere and the ocean is a guaranteed recipe for 'red tides', then harmful algea (HABs), then hypoxic or 'dead zones'. The beaches become at first unusable, smelly and might irritate the skin and eyes. Later, even just breathing the 'mist' can cause health problems and fish suffocate in the oxygen-deprived sludge, “fish-kill” (video). Marine species have their central nervous systems attacked by the poisons generated by the bacteria and also seek to 'leave the ocean' gasping for oxygen. Marine mammals, such as humpbacks are also poisoned and 'beached'. 'Food-species' can become deadly to fish, shellfish and people. Sea and shorebirds fall out of the sky(pdf). The stench would repel any visitor, closing beaches becomes very costly for the human economy. Rehabilitating the ecology of a 'dead zone' is usually left for the next generations.

Beyond denial - Doing something against the red tide
Elsewhere environmental groups are enforcing measurable standards to prevent the fouling of their beaches."..To set numeric limits on the excess nutrients which trigger harmful blooms of blue-green algae...Blue-green algae - also known as cyanobacteria - produce "dermatoxins" that can create severe dermatitis and are known tumor promoters; "neurotoxins" which interfere with nerve cell function; and "hepatotoxins" which attack the liver. Exposure to blue-green algae toxins through ingestion, skin contact or inhalation can cause rashes, skin and eye irritation, allergic reactions, gastrointestinal upset, serious illness, and even death..."
Their drinking water" is now subject to almost year-round blue-green algae blooms as a result of nutrient pollution"

It is too dear to not act
The red tide algae, Karenia brevis, "costs approximately $20 million per bloom in economic damage off the coast of Florida alone." The beauty of a beach is lost forever.

Ocean Care includes the acknowledgement of eutrophication, it seeks to alter the behaviour of individuals and the authorities bestowed with the stewardship of an biome and urban planning.

Images:
1. Shelly Beach, Google Maps, 2008
2. The walkway from Manly Beach to Shelly beach along the Cabbage Tree Bay Tree Aquatic Reserve on the one hand and the suburb on the other, Google Maps, 2008
3. Shelly Beach looking back onto the walkway with thick s
treakes of 'red slime' 051008
4. Shelly Beach with 'red slime'', with view to Manly Beach opposite

Update:
Red Tide 11.2010: North Head images, 1 & 2,