Urban coral reefs: Degradation and resilience of hard coral assemblages in coastal cities of East and Southeast Asia

© 2018 The Author(s) Given predicted increases in urbanization in tropical and subtropical regions, understanding the processes shaping urban coral reefs may be essential for anticipating future conservation challenges. We used a case study approach to identify unifying patterns of urban coral reefs and clarify the effects of urbanization on hard coral assemblages. Data were compiled from 11 cities throughout East and Southeast Asia, with particular focus on Singapore, Jakarta, Hong Kong, and Naha (Okinawa). Our review highlights several key characteristics of urban coral reefs, including “reef compression” (a decline in bathymetric range with increasing turbidity and decreasing water clarity over time and relative to shore), dominance by domed coral growth forms and low reef complexity, variable city-specific inshore-offshore gradients, early declines in coral cover with recent fluctuating periods of acute impacts and rapid recovery, and colonization of urban infrastructure by hard corals. We present hypotheses for urban reef community dynamics and discuss potential of ecological engineering for corals in urban areas

Understanding Social Wellbeing and Values of Small-Scale Fisheries amongst the Sama-Bajau of Archipelagic Southeast Asia

The Sama-Bajau represent one of the most widely dispersed Indigenous groups in Southeast Asia. Recent estimates indicate a total population of approximately 1.1 million, with around 200,000 living in areas of high biodiversity in the islands of eastern Indonesia, 347,000 in Malaysia (Sabah) and 564,000 in the Philippines. Sama-Bajau culture is intimately connected to marine environments on which they depend for subsistence and cash income, as well as their cultural identity. Culturally defined patterns of fishing activity (including migratory expeditions) unite all sectors of Sama-Bajau communities through catching, consuming, processing and trading of marine resources. Fishing and gathering of shellfish and other strand resources provide the focus for individual and communal relations within villages and across extensive kin and trading networks. The maintenance and transmission of Indigenous language and knowledge between generations occurs through socialisation into livelihoods and related social and cultural activities. As such, customary beliefs and practices in relation to boats and sea spirits endure among the Sama-Bajau, and are primarily oriented to ensuring return on fishing effort. Sama-Bajau small-scale fisheries (SSF) across insular Southeast Asia therefore present a highly relevant case study. We will explore the dimensions of social wellbeing in the Sama-Bajau context and identify how the Sama-Bajau have responded to endogenously developed and exogenously induced drivers. Utilising our collective experience of Sama-Bajau society in diverse locations across Indonesia, Malaysia and the Philippines, we will discuss the parameters of continuity and transformation in the Sama-Bajau way of life. The case study offers the opportunity to explore how historical and contemporary drivers have contributed to the variability of Sama-Bajau social welfare, spatially and temporally