Extent of water repellence

Extent of water repellence Soil water repellence is the resistance of soils to wetting, sometimes to the extent that they remain dry even after significant rainfall events or irrigation. Most of the soils (including in coastal and forest areas) in the South West NRM region are severely water repellent affecting agriculture production. This is a…

Salinity and agriculture

Salinity and agriculture This is a key issue affecting agriculture in Western Australia, particularly in the eastern parts of the region. The implications of dryland salinity to the agricultural industry are widespread and include reduced crop yield, area of arable land, land capability and should also include the growing need to meet community and market…

Soil nutrient management

Soil nutrient management On average, farm soils (i.e. pasture and arable) are over fertilised. They contain 1.3 – 1.6x as much phosphorus as is required for optimal production. Reducing the amount of phosphorus to optimal levels could lead to economic benefits (reduced fertiliser costs or redirection of fertiliser costs to removing other constraints), and reducing…

How serious is Soil Acidity?

How serious is Soil Acidity? More than 70% of agricultural topsoils and 50% of sub-surface soils are more acidic than they should be, and such soils affect agricultural production negatively as plants are less able to take up nutrients from the soil. This is a key issue affecting agriculture across Australia, and is also an…

Projected decline in rainfall

Projected decline in rainfall Changes in average annual and seasonal rainfall can result in conditions that make a specific location unsuitable for that plant to grow or animal to thrive, i.e. the new rainfall range is outside of that species’ optimal range. The projected changes in rainfall for the South West are severe enough to…

Projected rise in temperature

Projected rise in temperature The projected changes in temperature for the South West are severe enough to result in large parts of the current ranges of many species becoming unsuitable for those species. Changes in average annual and seasonal temperatures can result in conditions that make a specific location unsuitable for that plant to grow…

Aboriginal heritage places

Aboriginal heritage places The DAA on-line Heritage Inquiry System shows there are 820 Aboriginal heritage places in the South West, 251 of which are Registered Sites. The ‘Other Heritage Places’ listed in the system fall under the categories of: L – lodged (142) I – insufficient information (221) S – stored data (206). Case Studies…

Community groups

Community groups According to community groups in the South West, there are three common threats to their legacy and continuity. Access to funding was the biggest cause for concern, with 72% citing this (including access to funding, concerns about the loss of funding and the uncertainty of future funding). The inability to attract new members…

Changing face of Landcare

Changing face of Landcare Between 2000 and 2017, the number of active Landcare groups in the South West has increased from 48 to 77, while across WA, numbers have dropped from 700-800 to 465. The number of Aboriginal community groups involved in Landcare in the South West has increased from 4 to 15 between 2000…

Population growth

Population growth Between 2001 to 2016, SWCC regional population has grown by 36.7%, from 138,049 to 188,754 and total population projected to growth 223,480 by 2026 (i.e. 61.9% growth from 2001 to 2026)1 2 (Ecotones, 2018; ABS, 2018). Rapid urbanisation has occurred in coastal LGAs such as Busselton, Augusta-Margaret River, Harvey, Dardanup, Donnybrook-Balingup and Dardanup.…