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ProjectSubsistence Fisheries in Lower Order Streams: Notes on Species Preference, Fishing Methods, Catch Composition, Yield and Dietary Importance of Fish
Sepik River Fish Stock Enhancement Project: PNG/85/001. Field Document No. 11
1990Also available in:
No results found.One of the aims of the Sepik River Fish Stock Enhancement Project is to find out the potential of fish stocking into the Sepik-Ramu river system. To achieve this aim research is done that is primarily biological and ecological in nature. However, the aim of stocking is to improve the fishery resources available to the people living in the region. Coates (1985) has pointed out that the yield from the floodplain area is low compared to other floodplain areas in the world. He attributed these low y ields to the impoverished fish fauna of the Sepik basin. Although fishing is not a major activity of the people living in the hills and mountains of the Sepik-Ramu catchment, it is nevertheless generally assumed that fish forms a considerable part of their protein diet, as other protein sources are (equally) scarce. One of the aims of the fisheries survey in this region above the main channel and its system of floodplains, lakes and backswamps done by Benoit Mys was to find out how important fis h is in the diet of these people, and what effort they put into fishing. -
DocumentCharacteristics of sprouts occurrence by cutting to lower the stump height after harvesting the oak forest on the slope
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.This study was conducted to suggest an improved cutting to lower the stump height after harvesting that can induce the occurrence of high-quality root sprouts considering the locational characteristics of oak forests distributed mainly on slope. The study site was established in where the location environment and the stump diameter distribution were similar. The stumps were cut (control area) low horizontally based on the top of the slope, and cut (treatment area) parallel to the slope and close to the ground. The average number of occurred sprouts per stump was eleven, and there was no difference between control and treatment. The amount of stump lateral sprouts was decreased by 38% in the treatment (4.3 sprouts/stump) compared to the control (6.9 sprouts/stump). The occurrence of root sprouts (control: 3.8 sprouts/stump, treatment: 6.5 sprouts/stump) increased by 171%. 79.5% of the control lateral sprouts occurred in the lower slope direction where the stump height was relatively high. It was analyzed that lowing the overall stump height was a factor in reducing the occurrence of lateral sprouts. In order to promote the occurrence of high-quality root sprouts, an improved stump cutting, parallel to the slope and close to the ground, would be advantageous. Keywords: Sustainable forest management ID: 3613395
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