Latitudinal species diversity and density of cryptic crustacean (Brachyura and Anomura) in micro-habitat Autonomous Reef Monitoring Structures across Kepulauan Seribu, Indonesia

Abstract

Abstract. Hazeri G, Rahayu DL, Subhan B, Sembiring A, Anggoro AW, Ghozali AT, Madduppa HH. 2019. Latitudinal species diversity and density of cryptic crustacean (Brachyura and Anomura) in micro-habitat Autonomous Reef Monitoring Structures across Kepulauan Seribu, Indonesia. Biodiversitas 20: 1466-1474. Kepulauan Seribu is located in the north of Jakarta and has historically been affected by anthropogenic activities. Based on its anthropogenic pressure, the archipelago is divided latitudinally into three main parts; the southern part, is a collection of islands located closest to Jakarta Bay and characterized by poor water quality, large sediment and pollutant inputs from nearby rivers, the central and north part that possesses a better water quality. Brachyura and Anomura are dominant crustacean groups in the ocean, which inhabited areas from littoral zone to the deep sea. However, its diversity and abundance are relatively understudied especially in the area where anthropogenic pressure is severe like Kepulauan Seribu. The ARMS (Autonomous Reef Monitoring Structure) is a standardized monitoring method systematically designed for observing indications of organism’s biodiversity in units of time. This research was conducted by employing ARMS as a standardize monitoring procedure to catalog and provide census of Crustaceans (Brachyuran and Anomuran) distributed across the archipelago. All crustacean inhabiting each unit of ARMS were collected and identified. Species diversity was then evaluated to see whether gradient in anthropogenic pressure has a direct impact on species composition and abundance. A total of 24 ARMS units were deployed from 2013 to 2016, located in three zones: south (9), central (9) and north (6) of Kepulauan Seribu. This study identified 17 species from 8 different families of Brachyura and 11 Anomura species from 4 different families from all sites. However, low available identification references for Indonesian crustacean made some specimen were identified only up to family level. The highest species diversity of Brachyura was recorded from family Xanthidae, followed by Portunidae and Pilumnidae, while in Anomura was in Porcellanidae, followed by Paguridae, Galatheidae, and Diogenidae. The high species diversity and density of brachyurans and anomurans were recorded in the central zone. This research infers that the species diversity of Crustaceans (Brachyura dan Anomura) seems dependent on the environmental quality, but most likely all crustacean species depend on the availability of habitat structure.

Pan‐regional marine benthic cryptobiome biodiversity patterns revealed by metabarcoding Autonomous Reef Monitoring Structures

“…ARMS have thus been increasingly applied over the last decade to research rocky habitats in different regions (e.g. east coast of the USA (Leray & Knowlton, 2015); Red Sea (Carvalho et al., 2019; Pearman et al., 2016, 2019); French Polynesia (Ransome et al., 2017); Gulf of Aqaba (Al‐Rshaidat et al., 2016), Indonesia (Hazeri et al., 2019) and European waters (David et al., 2019; Pennesi & Danovaro, 2017)). The combination of a standardized tool for sampling biodiversity (i.e.…”

What Lies Inside a Dead Coral: Diversity of Reef-Associated Cryptic Crustacean (Crabs: Anomura and Brachyura) from Different Habitat Characteristics in Tidung Islands, Indonesia

“…Crab biota utilizes dead corals as a refuge from epibenthic and nektonic organisms. In Tidung Besar, the relative absence of anthropogenic interference with coral reef ecosystems was characterized by large number the family Porcellanidae is commonly found in bottom sandy substrate with coral rubble (Hazeri et al, 2019). This demonstrated that Porcellanidae could be easily discovered in many areas compared to other family of Anomura Chlorodiella nigra is the species with the largest percentage contribution and has a distribution pattern that tends to spread throughout the tropical Indo-Pacific region as well as in the Gulf of Kach, India (Beleem et al, 2014) (Figure 5a).…”

“…Furthermore, abundant algae and other encrusting organisms such as ascidians and sponges usually colonized the structure of the coral head (Kramer et al, 2017). Dead coral colonies have also been identified as a microhabitat for some invertebrate organisms including crustaceans (Kramer et al, 2014;Hazeri et al, 2019).…”

Species richness and longitudinal distribution of crustaceans in the Logawa River, Banyumas, Indonesia

“…Conversely, there was increasing species richness in the middle of the stream along the longitudinal gradient ( Figure 5). Hazeri et al (2019) reported that crustacean species depend on the availability of habitat structure. In detail, Silva-Junior et al (2017) reported that decapods were more abundant in leaf litter substrates than in sandy areas.…”