The intertidal gastropods (Gastropoda: Mollusca) diversity and taxa distribution in Alas Purwo National Park, East Java, Indonesia

Abstract. Susintowati, Puniawati N, Poedjirahajoe, Handayani NSN, Hadisusanto S. 2019. The intertidal gastropods (Gastropoda: Mollusca) diversity and taxa distribution in Alas Purwo National Park, East Java, Indonesia. Biodiversitas 20: 2016-2027. Gastropods play an essential role in the ecosystem and can be used as bioindicators of environmental pollution. Understanding of their behavior, habitat, and distribution, and how these factors evolve, is crucial. This paper aimed to describe the diversity of the gastropod community and their spatial taxa distribution, based on the specimen frequency across all observed samples, in the diverse environment of Alas Purwo National Park (APNP), East Java, Indonesia. We studied eight beaches and two mangroves areas, and the study areas of the intertidal zone divided into upper, middle, and lower zones towards the sea. The purposive sampling was used to determine the locations and multi-plot quadrats for observations. The diversity of gastropods was elucidated by using the Shannon and Simpson indexes, while the Morisita index was applied for analyzing their spatial distribution pattern. However, the correspondence analysis and principal component analysis were performed using the software of PAST 3.22 for describing the diversity profile and individual rarefaction of gastropods together with environmental quality. There were three beach types: rocky, sandy, and muddy beaches were found in APNP. The highest diversity index (H’) was found on Pancur beach: H’ = 3.271, D = 0.947 of 67 species. The spatial distribution pattern of gastropods species was weakly clumped to random, with Ip: 0.165 - 0.016. Gastropods, both predators and scavengers, were distributed from the upper to lower zones. The distribution of gastropods in APNP is mostly in type B. These results expand our knowledge of gastropods diversity and distribution of Indonesia’s beach and can contribute to the future environmental assessments of biodiversity of tropical intertidal zones worldwide.

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Spatial distribution pattern in mammal and bird richness and their relationship with ecosystem services in Sanjiangyuan National Park, China

Journal of Mountain Science ◽

10.1007/s11629-020-6515-3 ◽

2021 ◽

Vol 18 (6) ◽

pp. 1662-1677

Author(s):

Hua-wei Wan ◽

Hao-xin Li ◽

Jin-hui Wu ◽

Yu-ping Liu

Keyword(s):

Spatial Distribution ◽

Ecosystem Services ◽

Distribution Pattern ◽

National Park ◽

Spatial Distribution Pattern ◽

Bird Richness

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Spatial distribution pattern of Tarsius Lariang in lore lindu national park

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v13.i2.pp606-614 ◽

2019 ◽

Vol 13 (2) ◽

pp. 606 ◽

Cited By ~ 1

Author(s):

Abdul Rosyid ◽

Yanto Santosa ◽

I Nengah Surati Jaya ◽

M. Bismark ◽

Agus P. Kartono

Keyword(s):

Spatial Distribution ◽

Distribution Pattern ◽

Land Surface ◽

National Park ◽

Spatial Distribution Pattern ◽

Systematic Sampling ◽

Affecting Factors ◽

Factors Affecting ◽

Insect Abundance ◽

Lore Lindu National Park

Tarsius lariang (T. lariang) is an endemic species in Lore Lindu National Park (LLNP). Available information regarding T. lariang is limited to only morphological, anatomical, cytogenetic, and voices issues. Knowledge for its geospatial characteristics such as spatial preferences and spatial distribution is rare. The main objective of this study is to identify the spatial distribution pattern of T. lariang in LLNP. An additional objective is to identify the environmental factors affecting its spatial distribution patterns. Field observation for distribution pattern was done at the observation plot that were using systematic sampling with random start. Furthermore, the density estimation in each point was calculated using Triangle Count and Concentration Count method, while insect abundance was estimated using light traps sample data. Finally, spatial pattern was estimated using nearest neighbor index, while the environmental affecting factors were identified by using spatial analysis and correlation analyses. From 45 observation points, the T. lariang distribution pattern was clumped. It is also recognized that the significant factors affecting the spatial distribution were insect abundance, proximity from the commercially utilized land, and land surface temperature.

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Study on Pseudolarix amabilis Population Spatial Distribution Pattern

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.485.221 ◽

2012 ◽

Vol 485 ◽

pp. 221-224 ◽

Cited By ~ 1

Author(s):

Ren Yan Duan ◽

Min Yi Huang ◽

Fei Lin ◽

Yue Zhang

Keyword(s):

Spatial Distribution ◽

Diffusion Process ◽

Distribution Pattern ◽

Spatial Patterns ◽

Field Data ◽

Spatial Distribution Pattern ◽

Morisita Index ◽

Pattern Scale ◽

Population Spatial Distribution ◽

Peak Value

Field data were sampled by the method of contiguous grid quadrate. The spatial patterns of Pseudolarix amabilis populations were studied by the following methods: DispItalic textersal index (C), David moores index (I), Lloyd index (m*/m), Morisita index (Iδ), Parameter of negative index (K) and Cassie index (1/K). The quadrate variance analysis, Greig-Smith and Kershaw methods were used to study the spatial distribution pattern, pattern scale and pattern intensity of Pinus armandi population at different sizes. The result showed that P. amabilis population is most clumped. The result indicated the pattern intensity was decreasing with the size increasing and a single peak value appeared in the curve with the area increasing. There was a slow change in the pattern intensity of population, which means a smaller variation in environment and a bigger difference in the relative density of population patches during diffusion process.

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KEANEKARAGAMAN, PERSEBARAN DAN POLA TATA RUANG TUMBUHAN EPIFIT PADA HUTAN BEKAS TEBANGAN DI KIYU, PEGUNUNGAN MERATUS, KALIMANTAN SELATAN

BERITA BIOLOGI ◽

10.14203/beritabiologi.v17i1.2749 ◽

2018 ◽

Vol 17 (1) ◽

pp. 1

Author(s):

Asep Sadili ◽

Mohammad Fathi Royyani

Keyword(s):

Spatial Distribution ◽

Distribution Pattern ◽

Host Plant ◽

Quantitative Study ◽

Host Plants ◽

Dominant Species ◽

Diversity Index ◽

Spatial Distribution Pattern ◽

Epiphytic Plant ◽

Species Area

A quantitative study of epiphytic plants was conducted at the logged over forest in Kiyu, Meratus Mountain, Hulu Sungai Tengah, South Kalimantan. This study used a plot of 10 m x 500 m (± 0,5 ha), and divided into 50 subplot of 10 m x 10 m. The results showed that there were nine species of six genera from three families of epiphytic plants found within the studied plot, with A grostophyllum bicuspidatum as the dominant species. The diversity index (H’) was of 1,85. The diversity of epiphytic plant in these plots was well represented based on the results of analysis of species area curve. Spatial distribution pattern of all epiphytic species was homogeneus, except for A. bicuspidatum. The number of epiphytic host plants observed was 22 individuals from six species of six genera, and five families, with Saurauia nudiflora (Acthiniaceae) was the dominant host plant.

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