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Survey of economic activities, animal protein intake, fishery activities and fish yieids in the Sepik-Ramu catchment, 1991-1992. Part II· Results and Discussion

Sepik River Fish Stock Enhancement Project: PNG/85/001. Field Document No. 18b









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    Survey of economic activities, animal protein intake, fishery activities and fish yields in the Sepik-Ramu catchment, 1991-1992. Part I - Methods
    Sepik River Fish Stock Enhancement Project: PNG/85/001. Field Document No. 18a
    1993
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    During 1991-92 staff of the Sepik River Fish Stock Enhancement Project (SRFSEP) and of the Papua New Guinea National Department of Fisheries and Marine Resources conducted a series of surveys in villages located in the Sepik-Ramu catchment including at Y onki Reservoir (Eastern Highlands Province). These surveys are part of the study done by the SRFSE Project of the fishery taking place in the area to assess the importance of fishing and fish for the population residing in the Sepik-Ramu catchme nt in comparison with other economic activities and food. This was also done as a pre-stocking survey to gather base-line data upon which the future effects of stocking could be assessed. This report describes the way the surveys were conducted, the way the data were entered in a computer data base and the way the data were processed to be able to estimate relevant parameters such as the average income/household from various sources, the annual fish yield of men, women, boys, girls and of the wh ole community for each village or area surveyed.
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    Biomass, Density and Size of Fish of the Lower Order Streams in the Sepik-Ramu Catchment Raw Data
    Sepik River Fish Stock Enhancement Project: PNG/85/001. Field Document No. 14
    1990
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    The survey on the ecology and biology of the fish fauna of the lower order streams in the Sepik-Ramu catchment commenced on January 1988 as subproject of the Sepik River Fish Stock Enhancement Project (PNG/85/001-09) with a sampling program that extended to mid 1989. This report presents some of the raw data obtained as a result of this survey. These are: data on number of specimens, total weight of specimens, size range and average size per species per sample.
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    Preliminary Analysis of Stomach Contents of Various Fish Species from the Lower Order Streams in the Sepik-Ramu Basin and Identification of Vacant and Underutilised Trophic Niches
    Sepik River Fish Stock Enhancement Project: PNG/85/001. Field Document No. 8
    1990
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    This document provides an analysis of the stomach contents of nearly all species that were collected during the field trips in the Sepik-Ramu catchment area made from January 1988 - September 1989 (Van Zwieten 1990a) . The stomach contents analysed in this report are in general taken from fish that were sampled during the whole sampling period from all areas covered. The data presented are averages from all the specimens of a single species analysed; no attempt has been made to unravel differenc es in feeding behavior as reflected by stomach contents in different size groups of species. Variations in stomach contents of specimens of one species collected, from different rivers are yet to be analysed. Furthermore it is not possible, as yet, to say anything about seasonal changes in feeding. These aspects will be considered in separate publications. For our purpose the present level of analysis is sufficient: the identification of vacant and underutilised trophic niches in the lower order streams of the Sepik-Rarnu catchment.

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