Vegetation was sampled in kahikatea (Dacrycarpus dacrydioides)-dominant forest fragments having different recovery periods since grazing ceased in the Waikato region, North Island, New Zealand. Changes in vegetation were modeled against recovery periods ranging from 0–74 y and in relation to position within fragment (edge or interior). Indigenous plant species richness increased and adventive p...

The occurrence and persistence of OC residues in both animal fat and in soil is reviewed. These chemicals have caused problems in production of pasture and grain for livestock. Management strategies to give short term guidelines to graziers are described. Attempts to increase the rate of breakdown in the soil under Australian conditions by varying frequency of cultivation, by addition of lime o...

Steep, uncultivable hill country below 1,000 m comprises about 40% of New Zealand's land surface area. Hill farmers require options to increase the resilience their farms climatic and economic extremes while addressing soil conservation water quality issues. We profile discuss two that can assist in transforming country. The first a simple approach grazing management pastures pasture second foc...

The aim of this study was to test if changes in land use alter the isotopic signature of fish species, promoting changes in the trophic position and food resource partitioning between these consumers. Three different systems were investigated: pasture streams (n = 3), streams in sugar cane plantations (n = 3) and reference streams (n = 3). Fish species Aspidoras fuscoguttatus, Astyanax altipara...

The cattle and sheep industries of Australia are almost entirely dependent on grazing animals. Weston and Hogan (1973) estimated that less than 5% of the feed consumed by domestic ruminants in this country is derived from sown grain crops, and only 5 or 6% from conserved forage. Consequently effective management and use of pastures are of prime importance for efficient animal production. Althou...

Following the flurry of plant exploration in the 1950's, most activity with the plants collected apparently centred on expanding the area of adaptation of perennial grass and annual legume. Many of the subsequently released grass cultivars have been agronomically successful but have not been adopted. Haifa white clover, released by the New South Wales Department of Agriculture 25 years after co...