Diversity and abundance of terrestrial Gastropods on the slopes of Mount Arjuna-Welirang, East Java, Indonesia

Abstract

Abstract. Nurhayati PA, Affandi M, Nurinsiyah AS. 2021. Diversity and abundance of terrestrial Gastropods on the slopes of Mount Arjuna-Welirang, East Java, Indonesia. Biodiversitas 22: 4193-4202. Before this study, the latest list of land snail species from Mt. Arjuna-Welirang was published in 1952. The current study aims to update the list of terrestrial Gastropods in the area, focusing on Sumber Brantas Arboretum and Raden Soerjo Forest Park Conservation Area (Tahura), East Java, Indonesia. Live snails and dead shells were collected from 24 10 × 10 m2 sampling plots to determine species richness, composition, and abundance. Sampling was carried out by combining visual observation (direct collection) and sorting-sieving soil-leaf litter samples. Total 646 specimens belonging to eight families and 13 species were collected, all new records to the area. Thus, the number of species known from Mt. Arjuna-Welirang was increased to 16 species from nine families. The diversity index of the Mt. Arjuna-Welirang slope was 1.1, and the dominance index was 0.54. The Tahura had a higher diversity index than the Arboretum, at 2.0 and 0.38, respectively, but the dominance index for Tahura was lower (0.18 and 0.85, respectively). This was due to the dominance of Bradybaena similaris, an invasive species in the latter area. Less canopy cover and more human activity in the Arboretum are factors that might cause this discrepancy. Many land snail species are sensitive to desiccation and habitat disturbance. Therefore, minimizing habitat changes and human activities is necessary to maintain or increase native land snail species diversity.

Community distribution and utilization of gastropods in the Coastal Area of Liki Island, Sarmi District, Papua, Indonesia

“…Various types of environments in the coastal area of Liki Island provide suitable conditions and habitat types for many species of gastropods. Gastropod habitats are generally in the littoral zone, including tidal areas (Nurhayati et al 2021), where they can attach to seagrass and mangroves' roots, stems, and leaves (Rahman et al 2021). Most gastropods are also immersed in sandy mud substrates (Dharma 1988;Bula et al 2017;Saleky et al 2019).…”

Morphometric differentiation of Landouria smimensis along altitudinal gradient

“…In Java, there are at least 263 species of terrestrial gastropods among which 104 species are endemic to the island [5]. Mountains in Java harbor a high species diversity of land snails and endemicity [6][7][8][9]. Mt.…”

The structure communities of gastropods in the permanently inundated mangrove forest on the north coast of Jakarta, Indonesia

“…Permanent inundation influences the mangrove ecosystem functions as aquatic habitats, including benthic fauna (e.g., Gastropods). The mangrove ecosystem on the north coast of Jakarta has characteristic permanent water inundation that impacts the potential of environmental services, including habitat for aquatic organisms (Lapolo et al 2018;Belhiouani et al 2019;Nurhayati et al 2021;Purnama et al 2022). The mangrove ecosystem on the north coast of Jakarta supports feeding grounds, nursery grounds, and spawning grounds of aquatic organisms (Andriyani et al 2020;Hilmi et al 2020Hilmi et al , 2021cNurhayati et al 2021;Rahman et al 2021), including gastropods communities.…”