The Characteristics of Foraminiferal Community in Jakarta Bay

Abstract

<p>Jakarta bay is a unique water since there are hydrological and ecological complexity. In general, the feature of these water consist of three ecological elements that are estuaries, coral reefs and open sea. Each of these ecological element has different hydrology, ecology as well as biological characteristics. As a form of meiobenthic community, foraminifera has adaptive behavior to each of ecological element of the waters. The observation on foraminiferal adaptive behavior due to the hydrological condition of Jakarta Bay was conducted from 2003 to 2009. The result showed that foraminiferal distribution was tend to pursue to the degradation water conditions and constructed a specific pattern. Coastal water and estuary were found dominated by Ammonia beccarii, Calcarine and other larger benthic foraminifera were common in coral reef area, Elphidium and Nonion depressulum were common in open waters area. Based on the diversity indices, the foraminifera in Jakarta Bay has a higher diversity compared to foraminifera in the coastal water of Semarang and Cirebon and among the ecological element of Jakarta Bay, reef area has the highest diversity index than coastal nor open sea area.</p><p>Keywords: Foraminifera, Calcarine, Jakarta Bay</p>

Risk Analysis of Coastal Disaster of Semarang City, Indonesia

“…Deep sea waves are generally no direct effect on coastal area, while near the coast waves, especially in the area of the surf (surf zone) has a great energy which influence the formation of coastal morphology like a drag sediment (sediment-sized sand and gravel) are located on the seabed transported and dumped in the form sandbars (sand bar) [15]. Some reports show the influence of sediment and waves on the coastal line [16,17].…”

Kelimpahan Dan Keanekaragaman Makrobenthos Sebagai Bioindikator Pencemaran Lingkungan Laut Dangkal Perairan Tablolong Kupang Barat

“…Pencemaran lingkungan yang terjadi dikawasan padat nelayan dan industri disebabkan masuknya limbah rumah tangga maupun industri yang mengandung bahan kimia ke lingkungan perairan akan menimbulkan perubahan terhadap kondisi ekologisnya. Faktor utama penyebab tingginya pencemaran antara lain disebabkan rendahnya tanggung jawab serta kepekaan dan kepedulian masyarakat menjaga kebersihan u n t u k k e s e j a h t e r a a n l i n g k u n g a n (Rositasari et al, 2011). Polusi lingkungan mempengaruhi keberadaan populasi makrobenthos.…”