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Plastics in the Mangroves

3/6/2017

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I find mangroves a fascinating place and was interested to read recently of their ecological importance. That tangle of branches and roots provides protection for so much life. The muddy waters provide a nursery for many fish and prawns. Insects love the moist protected environment and in turn birds enjoy the protection of the mangrove trees and the wealth of food sources. Scientists have recorded more than 230 species of birds living in the mangrove environment in Australia. The mud is a rich source of nutrients for plants and aquatic life.

The mangrove environment also provides shelter from storms and rough seas and protects the banks against erosion. Indeed mangrove lined creeks are one of the best places to shelter from tropical cyclones if you happen to be aboard a boat and caught out by a storm. 

It is therefore with some sadness that I read of the threat to mangroves in Australia and worldwide. 

On a recent walk in Kuring Gai National Park just north of Sydney I found hundreds of meters of mangrove forest littered with plastic, comprising mainly plastic beverage bottles and polystyrene from packing cases used frequently in the fishing industry. The mangrove acts as a filter trapping this flotsam as it makes it's way to the ocean down our waterways. Washed from paths and roads this litter becomes concentrated in the mangroves in this area and is very difficult and time consuming to clean up. It is estimated that 70% of commercially caught fish have spent some time in a mangrove environment. These natural nurseries deserve to be protected from this plastic pollution. Failure to minimise this "leakage" of plastics into our oceans is leading to increasing amounts of plastics in our food chain.

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    Author

    Pat Neve is the skipper of the sailing vessel X-Pat and a keen advocate for clean oceans and the sustainable use of the oceans. In recent years he has been researching and raising awareness of the issue of plastics in our oceans

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  • Home
  • Background
  • News
  • Blog
  • Beach Surveys
    • Australia >
      • New South Wales >
        • Mona Vale
        • Bilgola
        • Newport
        • Watson's Bay
        • Hallet's Beach
      • Queensland >
        • Tangalooma Beach
        • Rocky Shelf Beach
        • Digby Island Beach
        • Naked Lady Beach
        • Middle Beach
        • East Beach
        • Woodwark Bay
        • Gap Beach
        • Homestead Bay
        • NW Beach, Macona Inlet
        • Whitehaven Beach
        • Kemp Beach
        • Fig Tree Creek Beach
      • Tasmania >
        • North Tinpot Beach
        • South Tinpot Beach
        • Randalls Bay
        • The Quarries Bay
        • Wineglass Bay
    • New Zealand >
      • Oke Bay
      • Whangamumu Harbour
      • Mimiwhangata Bay
      • Peach Grove Bay
    • Asia >
      • Timor Leste >
        • Bacau
        • Cristo Rei
        • Dili
    • Europe >
      • Prestatyn
      • Exe Estuary
      • Porto Das Barcas
      • Praia do Carvalhal
      • Praia do Carrapateira
      • Praia do Amado
      • Praia do Murracao
      • Praia do Pena Furuda
      • Praia da Ponta Ruiva
      • Seahouses
  • X-Pat
    • X-Pat Blog