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Sep 27, 2021 · Analyses of growth layers in bisected dugong tusks have revealed that dugongs are long-lived, with a maximum longevity record of 73 years (estimated from a female individual found in Western Australia 5). An (almost) vegetarian marine mammal. Dugongs and manatees are the only predominantly herbivorous aquatic mammals.
Unfortunately, dugongs are listed as vulnerable or endangered in many parts of their range due to various threats, including habitat loss, pollution, entanglement in fishing nets, and boat strikes. Dugongs hold cultural significance for many indigenous communities in regions where they are found. For some Aboriginal Australians, hunting dugongs ...
- Presentation outline
- Why are dugongs vulnerable
- Protection
- How are dugongs doing in the Pacific basin?
- Papua New Guinea
- Dugong movements and connectivity
- Advances in survey tools
- Miniaturisation and development of new dugong tracking equipment
- Dugong and Seagrass Research Toolkit
Dugong conservation status, estimated numbers and threats in the Pacific Basin Dugong movement and connectivity Advances in some key monitoring tools Matthieu Juncker
Long-lived and slow to mature Geographical overlap between dugongs and people put the animals at risk from a range of activities Type and intensity of threat vary with location (across and within countries)
National laws protect dugongs in the Pacific range states, but enforcement is lacking.
Status remain mostly unknown (except Australia) Several countries lack baseline data + formal assessment hasn’t really been conducted new data starting to emerge Opportunities to conduct IUCN regional assessments (IUCN Sirenia specialist group here help) Need for evidence of decline in the population
Estimated population size is unknown Questionnaire has been date?). UNEP-CMS Questionnaire Upload
Heterogeneous movements Possible long-range migratory patterns in some locations movements more likely response to climatic events Local-scale seasonal adjustments in habitat use in locations Movement behaviour adjusted to small coral reef lagoon habitats Dugong movements and connectivity Dugongs’ long distance journeys have led to species range ...
From manned surveys algorithm surveys Potential efficacy a Detection probability b Manned vs Unmanned c ML algorithm Mapping sightings and footprints Local-scale survey methodsc Two small drones Novel survey design Spatial modelling techniques Manual review User interface Classify environmental conditions
New insights into the long-term/range movements (GPS-sat tags) and short-term, fine scale dive profiles Require animal capture: logistically challenging if not impossible in low dugong density areas. Risky, and need to be culturally acceptable GPS-Iridium or Diary and cam-diary tags ✪ ✪
Decision support tool for research into dugongs, seagrasses and associated human communities. Developed by Dugong Technical Group. Audience: marine natural resource managers, decision-makers (government and non-government) and researchers. Purpose: standardise data sets and methods across countries for better comparison of global dugong and seagras...
Aug 25, 2021 · August 25, 2021. A close relative of the manatee found in the Indo-Pacific, dugongs are a hit for tourists and an important part of coastal marine ecosystems. But between climate change, harmful ...
Jul 12, 2024 · Physical Characteristics. Dugongs are easily identifiable by their large, elongated bodies. They typically measure between 7 to 11 feet in length and weigh between 500 to 925 pounds. Their skin is thick and smooth, often a grayish color. They have rounded flippers on either side of their bodies and a fluke resembling a whale’s tail.
Jan 9, 2021 · Rare footage of dugongs mating was captured off the coast of Yeppoon, Queensland. Experts had documented a decline in the dugong population in the Great Barrier Reef World Heritage site. Loss of ...
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Sep 14, 2023 · Discover the fascinating world of the endangered dugong in this captivating article.
