The Changes in the Population of Theodoxus Fluviatilis in the River Tywa Western Pomerania (Pomorze Zachodnie) in the Background of the Abiotic Habitat

Zamkowski, Tadeusz; Raczyńska, Małgorzata; Grzeszczyk-Kowalska, Anna; Machula, Sylwia; Śliwa, Paweł

doi:10.12912/23920629/309

Cited by 1 publication

(1 citation statement)

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“…The substrate is a place to attach, creep, immerse themselves, and food sources for gastropods (Riniatsih and Kushartono, 2009;Loekmanet al, 2018). Gastropods are found more often in muddy substrates because they can bind higher organic materials (Ulmaula et al, 2016;Zamkowski et al, 2013). A sandy substrate cannot be a place to strengthen the gastropod because the current can move the substrate particles so that the substrate can be shifted and moving in the other direction (Puspasari et al, 2012) and the sand substrate is more easily fragmented than the mud substrate (Sahidin et al, 2014).…”

Section: Condition Of the Sedati Watersmentioning

confidence: 99%

Gastropod Community Structure as Environmental Change Signals for Tropical Status In Sedati Waters, Indonesia

Melati¹,

Sari²,

Cahyoko³

et al. 2021

Ecol. Eng. Environ. Technol.

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Sedati is one of the Sidoarjo Regency's Coastal Areas, which has potential resources in capture fisheries. Many industries in Sedati have caused a decrease in the aquatic productivity and aquatic organism conditions, including gastropods. Gastropods are easy to find in various habitats, but their distribution is highly dependent on the habitat conditions such as physical, chemical and biological factors. Gastropods are sensitive to environmental changes and can withstand the environmental changes that are not too wide to be used as indicators of environmental pollution. This study aims to determine the structure of the gastropod community in the Sedati Waters. The research was performed using an observation method. The gastropod samples were taken using a dredge net, while the substrate samples were collected using Ekman grab. The gastropods found in Sedati Waters from October to December are nine species from 2 orders and six families. The species most commonly found in R. venosa, while the least is C. ventricosa. The abundance index of gastropods every month shows a marked difference between stations but not the other main parameters. The diversity index value was between 1.4846-2.0897. The evenness index value reached between 0.8284 and 0.9548. The dominance index ranged from 0.16 to 0.2299. The community structure of gastropods in the Sedati Waters, Sidoarjo, East Java shows a significant difference (p<0.05) between stations and belongs to the medium category.

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Section: Condition Of the Sedati Watersmentioning

confidence: 99%