Na Hang Nature Reserve, Tat Ke Sector - Frontier-publications.co.uk

More documents

Recommendations

Info

Na Hang Nature Reserve, Tat Ke Sector 1997 2.0 AIMS AND OBJECTIVES The fauna and flora of the Na Hang region were studied by Dang Huy Huynh and Hoang Minh Khien (1993), and a report on the biodiversity of the area was produced by Cox (1994), which led to the establishment of the nature reserve. Since the reserve was established in 1995, various foreign and Vietnamese biologists have carried out short periods of research in the area. In early 1996, an SEE expedition in the Southern (Ban Bung) sector of the reserve carried out a baseline biodiversity survey and socioeconomic work with local populations (Hill and Kemp, 1996). The aims of the second study period in the Na Hang reserve were to gather data on vegetation, animals and human populations in the northern part of the reserve, to add to the existing body of biological and socio-economic data. In particular, less wellknown groups (including butterflies, bats and small mammals) were to be targeted. This would allow conditions in the two wilderness zones to be compared. In addition, seasonal differences in the populations of insects, flowering plants and migratory birds would be observed. More specific aims of the survey were; • To identify and map the major vegetation types in Tat Ke, and describe their species composition and structure. • To assess the species richness and conservation value of major invertebrate and vertebrate groups. • To analyse human use of, and threats to, the forest vegetation of the Tat Ke area. • To discuss threats, and potential threats, to the reserve's biodiversity. 3.0 PERIOD OF STUDY AND STUDY SITES The work described in this report was carried out between the 5th July and 9th September 1996. Survey work was concentrated in the northern (Tat Ke) wilderness zone of the Na Hang reserve (with the exception of a short trip to the southern Ban Bung sector, during which birds were studied). Major study sites are shown in Figure 4; descriptions of these sites can be found in the relevant sections of this report. The position of the base camp (near Tat Ke village) is also shown in Figures 3 and 4. Frontier-Vietnam Environment Research Report 9 8
Na Hang Nature Reserve, Tat Ke Sector 1997 4.0 WORK UNDERTAKEN The work carried out in the Tat Ke sector of the Na Hang reserve is listed below. Details of the methodologies used can be found in relevant sections of this report. • The diversity of the forest flora was assessed by sampling all trees within four plots, each in a different forest type. Ground flora and shrubs were sampled in smaller quadrats within the plot. • The structure of the forest in each study site was assessed. Measurements of DBH, top height, height of bottom of canopy, first branch height, and canopy extent were taken for each tree. Forest transect diagrams were drawn using these data. • Invertebrate fauna was assessed using pitfall traps and sweep-netting. • The butterfly fauna of the reserve was sampled by net collection and butterfly trapping. • The fish fauna of streams and rivers in and around the Tat Ke sector was studied. • Reptiles and amphibians present in the sector were collected. • An extensive bird survey was carried out in all the habitats represented at Tat Ke, and measures of abundance and the distribution of species between habitats made. • A mammal survey was carried out using tracks and signs, sightings, mammal trapping (for small terrestrial mammals) and bat netting, to construct an accurate species list. • Socio-economic work was carried out to assess the impact of local populations on the forest in Tat Ke. Frontier-Vietnam Environment Research Report 9 9
Page 1: Frontier Vietnam Environmental Rese
Page 4 and 5: Na Hang Nature Reserve, Tat Ke Sect
Page 68 and 69:
Na Hang Nature Reserve, Tat Ke Sect
Page 70 and 71:
Appendix 1. Habitat; Plants Plant s
Page 72 and 73:
Species Habitat Fertile Uses/Status
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
stages SONNERATIACEAE 638. Duabanga
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
FOREST TRANSECT 1 Key: Ac Ao Ar Cl
Page 96 and 97:
FOREST TRANSECT 3 Key: Cl Clusiacea
Page 98 and 99:
Appendix 3. Forest plot data
Page 100 and 101:
Myrtaceae 4 1.081 3.60 8 1.250 4.66
Page 102 and 103:
Nymphalidae 32. Cethosia biblis Dru
Page 104 and 105:
Appendix 4b. Butterflies recorded a
Page 106 and 107:
1 2 3 4 5 25 Opsarichthys uncirostr
Page 108 and 109:
Appendix 6. Amphibians and Reptiles
Page 110 and 111:
A B C Upupipae: Hoopoe 14. Hoopoe (
Page 112 and 113:
A B C Subfamily Muscicapinae: Flyca
Page 114 and 115:
7b. Formulation used for the assess
Page 116 and 117:
Appendix 8. Key; A Identified from:
Page 118:
Appendix 9. List of specimens Insec
show all

Na Hang Nature Reserve, Tat Ke Sector - Frontier-publications.co.uk

Create successful ePaper yourself

Delete template?

Save as template?