Through murky waters: Cambodian reef communities
surveys 2021-2023; publication 2026
Each reef was visited once during 2021–2023. Comparisons are between surveyed sites, not repeated measurements of change at each reef.
CAMBODIA MARINE RESEARCH
Koh Rong and Samloem research
Research locations within this navigation area, including nearby waters. These windows are not administrative or habitat boundaries; general-area study pins may be approximate.
Studies and observations
JICA Sihanoukville port environmental baseline and assessment
Mixed survey rounds, including 2011 and 2015; other dates require table-level extraction
The August 2016 samples report dissolved oxygen, turbidity, suspended solids, nutrients, oil/grease and other laboratory parameters.
Koh Rong patrol records and community perceptions
161 patrols June 2016–March 2017; household survey March 2017; published 2018
Researchers combined 161 patrol records from June 2016–March 2017 with interviews and a March 2017 survey of 163 households, including 33 fishers.
OBIS Cambodia
Public archive includes 2024-2026 observations; latest supplied event date 2026-07-18
Each archive record supports a dated reported occurrence or non-detection, subject to provider quality flags. It does not measure a population or establish habitat extent.
Pavona coral spawning in the Gulf of Thailand
publication 2026
The Cambodian subset documents daytime spawning of Pavona corals and observation periods without spawning. Dates and local times are readable under each island.
Reported coral spawning events in March 2026
7–9 March 2026; announcement 16 March 2026
The account reports spawning observations during 7–9 March 2026 around Koh Rong/Song Saa and Koh Sdach.
Cambodian coastal fish eDNA study
Supplement Table 1: 7 April–3 May 2022 sampling; article online 2024, volume 2025
Source reference available; findings have not yet been extracted.
Reading this place profile
The same source can appear in neighbouring areas. Nearby records do not establish repeated monitoring. Regional reports without mapped locations and large habitat layers may not appear in this list.
Additional report findings
- Social and natural resources mapping for Koh Rong Marine National Park
The 2023 tables report 57 ha of seagrass, 278.23 ha of coral reef and 203.58 ha of mangroves for Koh Rong; the corresponding Samloem entries are 0.66 ha, 288.66 ha and 19.39 ha.
- Assessing the influence of four years of Marine Protected Area status in the Koh Rong Marine National Park
The April 2019 expedition surveyed 20 Koh Rong monitoring sites and five outer-island sites.
More research and original maps
- Plastic waste on Cambodia’s islands, beaches and reefs
In the Koh Sdach waste sample, plastic made up 27% of household waste by weight. This came from 24 participating households over a 24-hour collection, not a national waste estimate.
- Koh Rong and Samloem habitat and village maps
Read seven map subjects in English or Khmer, with March 2023 imagery identified in the English legends.