helping the dugong …

I have been involved with running a series of restoration projects around Broome, including several Green Army teams. The sign below explains what this one is about, with a graduation of the first team here on Friday, before the second group takes over the continued restoration.

A job well done, with a couple of thousand seedlings planted, and a lot of weeds removed. The site is adjacent to sewage treatment ponds, which creates an added risk.

This project is designed to prevent the spread of a poisonous algae in Roebuck Bay that affects sea grasses, the favoured food of dugongs. The contamination from the Treatment ponds favors Lyngba blue-green algae. Restoring trees to the area helps with reducing rainfall and drainage run-off.

Click to enlarge for easier reading.

GA

The Dampier Creek corner of Roebuck Bay, which is most impacted for sea grass beds:

2016-07-31 11.58.56

Pics below from the East side of Roebuck Bay.

DSC00554 DSC00556 DSC00558The mud flats of Roebuck Bay, and some animals affected by Lyngba if not kept in check:tides 089 t1 t2 t3 t4 t6 t7 t8 t9 t10 t11

About Tom Harley

Amateur ecologist and horticulturalist and CEO of Kimberley Environmental Horticulture Inc. (Tom Harley) Kimberley Environmental Horticulture Incorporated Kimberley Environmental Horticulture (KEH) is a small group of committed individuals who promote the use of indigenous plants for the landscaping of parks and gardens. Rehabilitation of Kimberley coast, bushland and pastoral regions are also high on our agenda. This includes planting seedlings, weed control, damage from erosion or any other environmental matter that comes to our attention. We come from all walks of life, from Professionals and Trades oriented occupations, Pensioners and Students, Public Servants and the Unemployed. We have a community plant nursery where we trial many old and new species, with a view to incorporating these into our landscaping trials. Our labour force are mainly volunteers, but with considerable help from the 'work for the dole' program, Indigenous Community Development Employment Program (CDEP) groups and the Ministry of Justice, with their community work orders; in this way we manage to train many people in the horticultural skills needed for indigenous plant growing. We constantly undertake field trips that cover seed and plant collection in the Kimberley. Networking around the Kimberley region and the east Pilbara is a necessary part of promoting our activities. We consult on a range of Environmental and Landscaping matters that deal with our region. Our activities involve improving Broome's residential streetscapes by including 'waterwise' priciples in planting out nature strips. Sustainable environmental horticulture is practised by members of our group. We use existing vegetation as the backbone of any plantings, using these species to advantage when planning to develop tree forms or orchards. The Broome region is sensitive to development. Subsequently many weed species have become dominant in and around developed areas. The use and movement of heavy machinery is the biggest single cause of environmental degradation. We dont live in a 'Tropical Paradise' but on the edge of the Great Sandy Desert. The plants that survive best here, grow in well-drained pindan sand, and are found from the Dampier Peninsular southward to where average rainfall is below 600mm. When we use rainforest species, detail is important when planting, water catchment, sunlight and understorey species are all considered. The use of recycled 'grey' water is an advantage here as well as treated waste-water, although many local species do not fare well with nutrients from this source. We use waterwise planting methods which include harvesting asmuch rainwater as possible, with swales designed to hold up to 200 litres, to help recharge the local groundwater aquifer. There has been a serious decline in this aquifer over the last few years. With the fast expansion of the Broome peninsular, more and more land is being covered by concrete, iron and bitumen so that much less water is available to replenish the aquifer, allowing the salt content to become significantly higher. The small Broome Peninsular is on the south-western corner of the Dampier Peninsular (bound by Broome, Derby and Cape Leveque at the northern tip). Compaction by vehicles also inhibits water retention due to the content of our local pindan sand, hard as concrete in the dry, going to soft and sloppy mud after rain. None of us are botanists, inevitably we have got some names wrong, names changed, or have not gone to sub-species level. If you note a photo or description may be wrong, please e-mail to kimenvhort@yahoo.com.au
This entry was posted in Broome/Kimberley, Environment, photography, Resources, science, weather and tagged , , , , , , . Bookmark the permalink.

One Response to helping the dugong …

  1. Kandy Curran says:

    Great work Tom and the Green Army Team.

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