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Research Article

Bird diversity of the wetland area in Suwi river, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia

[version 1; peer review: 1 not approved]
PUBLISHED 01 Oct 2018
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Abstract

The aim of the study was to determine the bird diversity in an essential ecological area, Suwi river, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia. The observation was performed at 5 locations using direct observation at two different times, 06.00-09.00 AM and 15.00-18.00 PM (Indonesia Central Standard Time-eight hours ahead or UTC+8 of GMT) from April 2017 to March 2018. The results stated that 63 species from 28 family were found with diversity index was 3.56. Fifteen birds species have a protected status according to PP no. 7 tahun 1999 (Government regulation document number 7 year 1999) about the preservation of plants and animals, while six species are in appendix two and one species is included in appendix one of the Convention on International Trade in Endangered (CITES). Appendix one includes species threatened with extinction. Trade in specimens of these species is permitted only in exceptional circumstances. Meanwhile, appendix two includes species not necessarily threatened with extinction, but in which trade must be controlled in order to avoid utilization incompatible with their survival. In addition, four species were of vulnerable status according to the International Union for Conservation of Nature (IUCN). This study provides information regarding the biodiversity of birds in an essential ecological area and contributes useful base line data for conservation activities.

Keywords

Birds, Suwi river, Muara Ancalong, Kutai Timur, Conservation

Introduction

Kalimantan island, known as Borneo, has a high biodiversity that remains one of the most forested provinces in Indonesia1. Kalimantan, especially east Kalimantan, also has a close relationship with Mahakam river. In the lower part of the Mahakam river, there are several large seasonal lakes and hundreds of small lakes that form wetland area2. In addition, the lakes have several small rivers, both inflows and backflows, which flow from both the Kelinjau and Kedang Kepala Rivers3. One of these small rivers is called the Suwi River, located in Muara ancalong district, Kutai Timur regency, East Kalimantan Province, Indonesia.

Recently, the wetland area in Suwi river and Mesangat lake have been proposed as an essential ecosystem (13.964,13 hectare) to support in the protection of both Crocodylus siamensis and Tomistoma schlegii, to prevent them from becoming extinct (see merdeka.com article). In addition, populations of fish can be also found in the Suwi River, which is surrounded by a large area of forest with populations of birds.

Though some studies have been done in the Suwi River1,4, there is no information regarding the bird diversity in this area. Therefore, the aim of the current study was to inventory the bird diversity in this essential ecosystem of the Suwi River to support the conservation actions of Mesangat and Suwi wetland essential ecosystem, Muara Ancalong, Kutai Timur, Indonesia.

Methods

This study was performed in the Suwi River, Muara Ancalong, Kutai Timur, Indonesia (Figure 1) from April 2017 to March 2018. The observation locations were

a. Upper stream (latitude: 0,42469; longitude 116,61273)

b. Middle stream (latitude: 0,40816; longitude: 116,61749)

c. Downstream (latitude: 0,38983; longitude: 116,60514)

d. Ketiaw (latitude: 0,40638; longitude: 116,60346)

e. Loa Bekara (latitude: 0,41527; longitude: 116,63173)

6272c222-11ca-4365-909c-2d326259a9b8_figure1.gif

Figure 1. Bird observation location.

a. Upper stream (latitude: 0,42469; longitude 116,61273), Middle stream (latitude: 0,40816; longitude: 116,61749), Downstream (latitude: 0,38983; longitude: 116,60514), Ketiaw (latitude: 0,40638; longitude: 116,60346), Loa Bekara (latitude: 0,41527; longitude: 116,63173)

Direct observation by researchers in the field at two different time points, 06.00–09.00 AM and 15.00–18.00 PM (Indonesia Central Standard Time-eight hours ahead or UTC+8 of GMT) was performed to collect the numbers of the individual birds and to identify species in each location. The equipment used included Binocular celestron, upclose G2 10-30×50 zoom porro (Torrance, California, United States) and Global Positioning System (GPSMAP) Garmin 78s. Images of found-birds were taken using a digital camera (Canon PowerShot SX520 HS PC2152 16.0MP Digital Camera, Canon, Inc., USA), To identify the species of the birds found, the guidelines book of Mackinnon et al.5 was used.

Data analysis

The diversity index was performed following Shannon Index of Diversity, with the equation of Ludwig and Reynolds6 using Microsoft Excel 2013:

H’ = Σ (ni/N) log (ni/N)

where :

H’ = Shannon-Weiner index diversity

ni = the number of individuals found for a species

N = the number of individuals from all species

Results and discussion

63 bird species from 27 family were found during the study (Table 1). The full data of all birds found in the Suwi River wetland, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia can be seen in Dataset 17.

Table 1. Bird diversity in the essential ecological area of Suwi River, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia.

NoScientific name (Species)Local name (Indonesia)FamilyNumber of
individuals (n)
1Acridotheres cristatellusKerak JambulSturnidae4
2 Aegithina tiphia Cipoh KacatAegithinidae1
3 Alcedo meninting Raja Udang MenintingAlcedinidae8
4 Amaurornis phoenicurus Kareo PadiRallidae 5
5 Anhinga melanogaster Pecuk-ular asiaAnhingidae25
6 Anthracoceros albirostris Kangkareng Perut-putihBucerotidae1
7 Anthracoceros malayanus Kangkareng HitamBucerotidae2
8 Aplonis panayensis Perling KumbangSturnidae2
9 Ardea purpurea Cangak MerahArdeidae6
10 Ardeola speciosa Blekok SawahArdeidae31
11 Artamus leucorynchus Kekep BabiArtamidae2
12 Bubulcus ibis Kuntul KerbauArdeidae1
13 Butorides striatus Kokokan LautArdeidae2
14 Centropus bengalensis Bubut Alang-alangCuculidae5
15 Centropus rectunguis Bubut TeragopCuculidae4
16 Centropus sinensis Bubut besarCuculidae17
17 Ceyx erithacus Raja Udang ApiAlcedinidae2
18 Clamator coromandus Bubut-pacar jambulCuculidae20
19 Columba vitiensis Merpati Hutan MetalikColumbidae2
20 Copsychus saularis Kucica kampungMuscicapidae8
21 Corvus enca Gagak HutanCorvidae3
22 Cuculus saturatus Kangkok RantingCuculidae1
23 Cymbirhynchus
macrorhynchos
Sempur Hujan SungaiEurylaimidae6
24 Cyornis turcosus Sikatan MelayuMuscicapidae3
25 Delichon dasypus Layang-layang RumahHirundinidae1
26 Dendrocygna arcuata Belibis kembangAnatidae4
27 Dicaeum celebicum Cabai Panggul KelabuDicaeidae4
28 Dicaeum cruentatum Cabai MerahDicaeidae1
29 Dicrurus annectans Srigunting GagakDicruridae1
30 Dinopium javanense Pelatuk BesiPicidae2
31 Dryocopus javensis Pelatuk AyamPicidae1
32 Ducula pickeringii Pergam KelabuColumbidae4
33Egretta albaKuntul BesarArdeidae2
34 Egretta eulophotes Kuntul CinaArdeidae1
35 Egretta garzetta Kuntul KecilArdeidae6
36 Elanus caeruleus Elang TikusAccipitridae3
37 Eudynamys scolopacea Tuwur AsiaCuculidae3
38 Eurylaimus javanicus Sempur Hujan RimbaEurylaimidae1
39 Eurystomus orientalis Tiung-lampu BiasaCoraciidae17
40 Gracula religiosa Tiung/BeoSturnidae3
41 Hemicircus concretus Caladi tikotokPicidae1
42 Hirundo rustica Layang-layang AsiaHirundinidae6
43 Hirundo tahitica Layang-layang BatuHirundinidae13
44 Leptoptilos javanicus Bangau tong-tongCiconiidae4
45 Meiglyptes tristis Caladi batuPicidae2
46 Meiglyptes tukki Caladi badokPicidae6
47 Merops viridis Kirik-kirik BiruMeropidae4
48 Microhierax fringillarius Alap-Alap CapungFalconidae2
49 Orthotomus ruficeps Cinenen KelabuCisticolidae2
50 Pelargopsis capensis Pekaka emasAlcedinidae35
51 Phaenicophaeus curvirostris Kadalan BirahCuculidae1
52 Phaenicophaeus diardi Kadalan BeruangCuculidae4
53 Phaenicophaeus sumatranus Kadalan SawehCuculidae1
54 Picus miniaceus Pelatuk MerahPicidae2
55 Porzana cinerea Tikusan Alis PutihRallidae 1
56 Psittacula longicauda Betet Ekor-panjangPsittaculidae14
57 Pycnonotus aurigaster Cucak KutilangPycnonotidae4
58 Pycnonotus goiavier Merbah CerukcukPycnonotidae2
59 Streptopelia chinensis Tekukur BiasaColumbidae5
60 Surniculus lugubris Kedasi HitamCuculidae1
61 Treron fulvicollis Punai BakauColumbidae14
62 Treron vernans Punai GadingColumbidae29
63 Trichastoma rostratum Pelanduk Dada-putihPellorneidae1
Total number of individuals369

Bird species that frequently were found in each observation location were Pelargopsis capensis (n = 35), followed by Ardeola speciosa (n = 31), Treron vernans (n = 29), Anhinga melanogaster (n = 25) and Clamator coromandus (n = 20).

The presence of Pelargopsis capensis, Anhinga melanogaster and Ardeola speciosa is likely due to the abundance of fish in the observation locations. Meanwhile, Treron vernans is a seed and fruit-eating bird species that can be observed in the Suwi river wetland area where local tree species such as Ficus sp. and Malotus sumatranus can be widely found. Further, Coromandus Clamator is a small insectivorous bird species and lives among trees, mangroves, farmland and bushes. Some of the birds that were observed during the study are categorized in the threatened-list of International Union for Conservation of Nature (IUCN), Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), or Indonesia government regulation document (PP) number 7 year 1999 about the preservation of plants and animals8 (Table 2).

Table 2. List of threatened, endangered or protected birds species found in Suwi river, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia.

NoSpeciesIUCNCITESPP No 7 1999
1 Elanus caeruleus LR/lcAIIP
2 Alcedo meninting LR/lcNLP
3 Ceyx erithacus LR/lcNLP
4 Anhinga melanogaster LR/ntNLP
5 Ardea purpurea LR/lcNLP
6 Ardeola speciosa LR/lcNLP
7Egretta albaLR/lcNLP
8 Egretta eulophotes VUNLP
9 Egretta garzetta LR/lcNLP
10 Anthracoceros albirostris LR/lcAIIP
11 Anthracoceros malayanus LR/ntAIIP
12 Leptoptilos javanicus VUNLP
13 Ducula pickeringii VUNLNP
14 Centropus rectunguis VUNLNP
15 Microhierax fringillarius LR/lcAIIP
16 Pelargopsis capensis LR/lcNLP
17 Dryocopus javensis LR/lcAINP
18 Psittacula longicauda LR/ntAIINP
19 Gracula religiosa LR/lcAIIP

IUCN = International Union for Conservation of Nature (IUCN), CITES = Convention on International Trade in Endangered Species of Wild Fauna and Flora, PP No 7 1999 = Indonesia Government regulation document (PP) number 7 year 1999 about preservation of plant and animal. LR/Lc = Lower risk/ Least Concern, LR/nt = Lower risk/near threaten, VU = Vulnerable, NL = Not on the List AI = Appendix I, AII = Appendix II, P = Protected, NP = not protected

In the present study 63 species were identified, of which 15 species have protected status according to the Indonesia Government regulation document (PP) number 7 year 1999 on the preservation of plants and animals. Moreover, 6 species are categorized in appendix II of CITES indicating that the species are not necessarily threatened with extinction, but the trade of these animals must be controlled and regulated in order to avoid utilization incompatible with their survival. Furthermore, only one species is classified in appendix I of CITES, meaning the species is threatened with extinction. Trade in specimens of this species is only permitted under special circumstances. 4 species were found to be vulnerable according to the IUCN.

The diversity index of birds of the Suwi River, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia was found to be 3.56. According to Shannon-Wiener index, the diversity of birds of the Suwi river, Muara ancalong was H > 3, a high diversity index. However, illegal hunting for commercial use and land-use change for palm oil plantations might threaten the habitat of the birds. Thus, conservation actions and further regulation should be considered.

Dataset 1.List of found-birds during observation between April 2017 and March 2018 in the Suwi River wetland, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia.
Dataset 2.Pictures of found-birds during observation between April 2017 and March 2018 in the Suwi River wetland, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia.

Conclusion

The first report of bird diversity an essential ecological area of the Suwi River wetland, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia has found it contains a number of birds that are protected according to the IUCN, CITES and Indonesia government document. Though the diversity index of bird is classified as high, conservation action should be taken into consideration in order to protect the birds as well as their natural habitat.

Data availability

Dataset 1: List of found-birds during observation between April 2017 and March 2018 in the Suwi River wetland, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia. 10.5256/f1000research.16251.d2195717

Dataset 2: Pictures of found-birds during observation between April 2017 and March 2018 in the Suwi River wetland, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia. 10.5256/f1000research.16251.d2195869

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Isa NL, Kusneti M and Nugroho RA. Bird diversity of the wetland area in Suwi river, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia [version 1; peer review: 1 not approved]. F1000Research 2018, 7:1587 (https://doi.org/10.12688/f1000research.16251.1)
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ApprovedThe paper is scientifically sound in its current form and only minor, if any, improvements are suggested
Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit.
Not approvedFundamental flaws in the paper seriously undermine the findings and conclusions
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Reviewer Report 17 Oct 2018
Huilquer Francisco Vogel, University of the State of Paraná (UNESPAR), Paranavaí, Brazil 
Not Approved
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It is an important report for activities of environmental planning of flooded areas of the Suwi river.

Introduction:
  1. Beyond the importance for wildlife, is there any direct use by the population?
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Vogel HF. Reviewer Report For: Bird diversity of the wetland area in Suwi river, Muara Ancalong, Kutai Timur, Kalimantan Timur, Indonesia [version 1; peer review: 1 not approved]. F1000Research 2018, 7:1587 (https://doi.org/10.5256/f1000research.17749.r38905)
NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article.

Comments on this article Comments (0)

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VERSION 1 PUBLISHED 01 Oct 2018
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Alongside their report, reviewers assign a status to the article:
Approved - the paper is scientifically sound in its current form and only minor, if any, improvements are suggested
Approved with reservations - A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit.
Not approved - fundamental flaws in the paper seriously undermine the findings and conclusions
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