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Annual Report 2010-2011 (PDF - 2.47 mb) - Royal Botanic Gardens ...

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Contents<br />

OUR achievements – Strategic Priority 2A<br />

Business Plan specific outcomes<br />

(and associated Corporate Plan actions)<br />

Progress against specific outcomes and actions<br />

1<br />

Pest is a generic term<br />

used internationally to<br />

denote plant-deleterious<br />

organisms such as<br />

insects, fungi,<br />

nematodes, viruses, etc.<br />

Specific Outcome 21<br />

(Relating to Corporate Plan Action 18)<br />

Expand horticultural research programs which<br />

demonstrate sustainable practices which can be<br />

applied as adaptations to climate change by:<br />

a. continuing to undertake scientific research in<br />

landscape water use in partnership with The<br />

University of Melbourne and Sentek Pty Ltd.<br />

This will be achieved through the use of soil<br />

moisture sensing technology and comparison<br />

with existing irrigation scheduling techniques<br />

b. continuing to undertake scientific research to<br />

monitor RBG Melbourne rainfall and vegetation<br />

throughfall (rain amount reaching ground<br />

surface) in partnership with the School of<br />

Geographic and Environmental Sciences<br />

(SGES), Monash University<br />

c. completing and implementing the <strong>Royal</strong> <strong>Botanic</strong><br />

<strong>Gardens</strong> Biosecurity Plan, a framework for the<br />

strategic management of biosecurity, in order to<br />

reduce the risk of exotic pest 1 incursions and to<br />

adopt a common approach to border quarantine<br />

for the <strong>Royal</strong> <strong>Botanic</strong> <strong>Gardens</strong><br />

Research programs and collaborations continued<br />

into sustainable horticultural practices to support<br />

the <strong>Royal</strong> <strong>Botanic</strong> <strong>Gardens</strong>’ endeavours to meet<br />

the challenge of climate change. These included:<br />

a. Gathering soil moisture data from over 80<br />

locations across RBG Melbourne for the purpose<br />

of fine tuning irrigation scheduling. Due to<br />

improved rainfall in <strong>2010</strong>–11, measurements<br />

showed a marked recharge of deep subsoil<br />

moisture and re-use by trees for probably the first<br />

time after a decade of drought conditions. The<br />

project team developed an innovative concept of<br />

‘banking’ water – Subsoil Water Storage and<br />

Recovery (SWSR) – in the subsoil to improve the<br />

health of trees in drought and maximise water<br />

efficiency. This concept is expected to be more<br />

broadly implemented to maximise non-potable<br />

water use as part of Working Wetlands Part B.<br />

(See also Goal 3, Specific Outcome 42a.)<br />

b. Research was initiated into relative humidity and<br />

temperatures across four sites at RBG Melbourne<br />

using data-logging. The study helped identify<br />

more suitable microclimates for specific plants<br />

in the Living Collections and improved the<br />

efficiency of irrigation cooling systems;<br />

this work will continue into <strong>2011</strong>–12.<br />

A paper entitled ‘Interception rates and<br />

processes on vegetation in a major urban area:<br />

metropolitan Melbourne, Australia’ was presented<br />

by SGES at the European Geosciences Union<br />

General Asse<strong>mb</strong>ly, Vienna, in May <strong>2011</strong>. The<br />

study focussed on RBG Melbourne as an urban<br />

site for the research. To date, the findings of<br />

rainfall losses from canopy interception have<br />

implications for water management planning<br />

across the <strong>Royal</strong> <strong>Botanic</strong> <strong>Gardens</strong> and for urban<br />

environments more generally.<br />

c. The <strong>Royal</strong> <strong>Botanic</strong> <strong>Gardens</strong>’ Biosecurity Policy<br />

was developed and approved and a Biosecurity<br />

Procedure drafted. (See also Goal 3, Specific<br />

Outcome 42c.)<br />

<strong>Royal</strong> <strong>Botanic</strong> <strong>Gardens</strong> Board Victoria <strong>Annual</strong> <strong>Report</strong> <strong>2010</strong>–11 page 61

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