2ee80bf0-5075-4437-bdfa-aca83d3d2d2a urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2026-03-16T03:01:58 creation ISO 19115 2016 Sea urchin predation mortality rates 2ee80bf0-5075-4437-bdfa-aca83d3d2d2a Mortality rates of the sea urchin Heliocidaris erythrogramma where estimated under experimental conditions to determine the importance of natural and predation mortality in structuring sea urchin populations. Data was obtained from tethering, tagging and caging experiments at four sites within Mercury Passage and the Derwent Estuary in eastern Tasmania. {"type": "Polygon", "coordinates": [[[147.0, -43.0], [148.0, -43.0], [148.0, -42.55], [147.0, -42.55], [147.0, -43.0]]]} 147.0 148.0 -43.0 -42.55 25 247001 28 820001 Biosphere | Ecological Dynamics | Predation Decapod crustacean abundance Demersal fish Demersal fish abundance Heliocidaris erythrogramma Jasus edwardsii Marine reserves Oceans | Marine Biology | Marine Invertebrates Sea urchin abundance Sea urchin mortality Size-specific mortality Test diameter ORCID ID documentDigital HTML ORCID ID documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital HTML Unnamed resource documentDigital License Graphic PNG Unnamed resource documentDigital HTML