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Survey of Lower Order Streams in the Sepik and Ramu Basin 1988 - 1989. Description of Methods and Sample Sites

Sepik River Fish Stock Enhancement Project: PNG/85/001. Field Document No. 7

Year of publication 1989

Pages 48 p.

Author Van Zwieten, P.

Publisher FAO ;

Product type Project

Edition 1

Synopsis (short abstract) Investigations of the ecology and biology of the fish fauna in lower-order Sepik and Ramu streams started in January 1988 as a sub project of the Sepik River Fish Stock Enhancement Project (PNG/85/001-09) with a sampling program that extended to mid-1989. This report presents the sampling and research methods used and contains descriptions of the sample sites.

Language English

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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
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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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    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.
  • Thumbnail Image
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    Distribution, Altitudinal Range and Abundance of the Fish Species in the Lower Order Streams of the Sepik-Ramu Catchment
    Sepik River Fish Stock Enhancement Project: PNG/85/001. Field Document No. 9
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    This report provides a summary of data on distribution, altitudinal ranges and abundance of the fish species found in the lower order streams (hillstreams and mountainous streams) of the Sepik-Ramu catchment.
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