Modelling predicts positive and negative interactions between three Australian tropical tree species in monoculture and binary mixture

Computer modelling promises to be an important tool for analysing and predicting interactions between trees within mixed species forest plantations. This study explored the use of an individual-based mechanistic model as a predictive tool for designing mixed species plantations of Australian tropical trees. The `spatially explicit individually based-forest simulator' (SeXI-FS) modelling system was used to describe the spatial interaction of individual tree crowns within a binary mixed-species experiment. The three-dimensional model was developed and verified with field data from three forest tree species grown in tropical Australia. The model predicted the interactions within monocultures and binary mixtures of Flindersia brayleyana, Eucalyptus pellita and Elaeocarpus grandis, accounting for an average of 42% of the growth variation exhibited by species in different treatments. The model requires only structural dimensions and shade tolerance as species parameters. By modelling interactions in existing tree mixtures, the model predicted both increases and reductions in the growth of mixtures (up to +/-50% of stem volume at 7 years) compared to monocultures. This modelling approach may be useful for designing mixed tree plantations.

Improved domestic profitability and export competitiveness of selected fruit value chains in the southern Philippines and Australia program

The goal of the Program is to contribute to economic growth in the Philippines through increased income and improved livelihoods of tropical fruit growers in southern Philippines. The purpose of the Program is to improve the smallholder and industry profitability and export competitiveness of selected tropical fruits industries in the southern Philippines. Fruit crops to be targeted are mango, papaya, durian and jackfruit. The primary audience for the outcomes of this Program are medium to large scale commercial fruit growers and farmers predominantly in the regions of Leyte (VIII), northern Mindanao/Cagayan de Oro (X) and southern Mindanao/Davao (XI).

ACIAR Pacific Agribusiness Research for Development Initiative (PARDI)

PARDI provides a platform for stronger economic growth of Pacific island countries. The initiative aims to substantially improve the livelihoods of smallholder farmers in the Pacific. Benefit to Queensland includes: 1) looking at supply chain (value chain) innovations for tropical horticultural commodities in both Queensland and the South Pacific to maintain competitiveness. 2) undertaking research on a product called canarium nut which is grown in the Solomon Islands. It is a new potential high value speciality product (similar to macadamia) in which macadamia industry partners are participating. 3) involvement in specific targeted supply chain business improvement with industry partners.

The Potential for a New Value Adding Industry for Noni Tropical Fruit Producers

Morinda citrifolia (noni) grows widely throughout the Pacific and is native to Australia. It is a source of traditional medicine amongst Coastal Aboriginal Communities in Cape York, the Pacific Islands and South East Asia, and in recent years has experienced significant economic growth worldwide through a variety of health and cosmetic claims. The largest markets for noni are North America, Europe, Japan, Mexico, Asia and Australia with the worldwide market for these products estimated at US$400 million.

Increasing Australian impoundment fisheries potential - Habitat enhancement to improve angling and productivity in impoundments

To investigate strategies for increasing Australian impoundment fisheries productivity and improving recreational angling and regional economic growth