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Peter L. Harrison is an Australian marine biologist, ecologist, and a Professor at Southern Cross University, Australia, as well as the founding director of the Marine Ecology Research Centre. [1] His specialty is coral reproduction ecology and larval restoration.
While conducting his PhD at James Cook University in Townsville in 1981, Harrison worked with a small group of other researchers that first discovered Mass Coral Spawning. [2] This occurred after the monitoring of hundreds of corals and during night dives at Magnetic Island, where the team observed millions of coral sperm and eggs filling the waters around them in a synchronised mass multi-species spawning event. This discovery was the first scientific documentation of a mass coral spawning event. Three years later, in 1984, Harrison and the team published their first paper on the occurrence. [3] One of his primary research focuses on coral and reef restoration [4] and developing larger-scale coral larval restoration projects. This work aims to use millions of coral larvae to restore damaged reefs in the Philippines and on the Great Barrier Reef. [5] [6]
Harrison and the team were awarded a Eureka Prize for Environmental Research in 1992 for their discovery of mass coral spawning on the Great Barrier Reef. [7] Harrison led a United Nations funded mission to assess the impacts of the first Gulf War on the coral reefs of Kuwait, and has a new coral species discovered in the Arabian Gulf named after him (Porites Harrisoni). Peter has been appointed to the Australian Government’s Threatened Species Scientific Committee, serving on the committee from 2005 to 2015. [8] A sculpture of Peter Harrison was created by Jason deCaires Taylor for the Museum of Underwater Art [9] as part of the Ocean Sentinels above the surface exhibition in 2022. [10]
Harrison has published over 200 scientific research papers, reports and books. [11] His work has been cited almost 15,000 times. [12]
A polyp in zoology is one of two forms found in the phylum Cnidaria, the other being the medusa. Polyps are roughly cylindrical in shape and elongated at the axis of the vase-shaped body. In solitary polyps, the aboral end is attached to the substrate by means of a disc-like holdfast called a pedal disc, while in colonies of polyps it is connected to other polyps, either directly or indirectly. The oral end contains the mouth, and is surrounded by a circlet of tentacles.
Corals are colonial marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton.
The Great Barrier Reef is the world's largest coral reef system, composed of over 2,900 individual reefs and 900 islands stretching for over 2,300 kilometres (1,400 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi). The reef is located in the Coral Sea, off the coast of Queensland, Australia, separated from the coast by a channel 160 kilometres (100 mi) wide in places and over 61 metres (200 ft) deep. The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. It supports a wide diversity of life and was selected as a World Heritage Site in 1981. CNN labelled it one of the Seven Natural Wonders of the World in 1997. Australian World Heritage places included it in its list in 2007. The Queensland National Trust named it a state icon of Queensland in 2006.
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.
Coral bleaching is the process when corals become white due to loss of symbiotic algae and photosynthetic pigments. This loss of pigment can be caused by various stressors, such as changes in temperature, light, or nutrients. Bleaching occurs when coral polyps expel the zooxanthellae that live inside their tissue, causing the coral to turn white. The zooxanthellae are photosynthetic, and as the water temperature rises, they begin to produce reactive oxygen species. This is toxic to the coral, so the coral expels the zooxanthellae. Since the zooxanthellae produce the majority of coral colouration, the coral tissue becomes transparent, revealing the coral skeleton made of calcium carbonate. Most bleached corals appear bright white, but some are blue, yellow, or pink due to pigment proteins in the coral.
Southern Cross University (SCU) is an Australian public university, with campuses at Lismore and Coffs Harbour in northern New South Wales, and at Coolangatta, the most southern suburb of the Gold Coast in Queensland. In 2019, it was ranked in the top 100 young universities in the world by the Times Higher Education World University Rankings.
The crown-of-thorns starfish, Acanthaster planci, is a large starfish that preys upon hard, or stony, coral polyps (Scleractinia). The crown-of-thorns starfish receives its name from venomous thorn-like spines that cover its upper surface, resembling the biblical crown of thorns. It is one of the largest starfish in the world.
External fertilization is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body. It is contrasted with internal fertilization, in which sperm are introduced via insemination and then combine with an egg inside the body of a female organism.
Reproductive synchrony is a term used in evolutionary biology and behavioral ecology. Reproductive synchrony—sometimes termed "ovulatory synchrony"—may manifest itself as "breeding seasonality". Where females undergo regular menstruation, "menstrual synchrony" is another possible term.
John Edward Norwood Veron, credited in research as J. E. N. Veron, and in other writing as Charlie Veron, is an Australian biologist, taxonomist, and specialist in the study of corals and reefs. He is believed to have discovered more than 20% of the world's coral species.
Richard Randolph "Randy" Olson is a marine biologist-turned-filmmaker who earned his Ph.D. in Biology from Harvard University (1984) and became a tenured professor of marine biology at the University of New Hampshire (1992) before changing careers by moving to Hollywood and entering film school at the University of Southern California.
Coral reef protection is the process of modifying human activities to avoid damage to healthy coral reefs and to help damaged reefs recover. The key strategies used in reef protection include defining measurable goals and introducing active management and community involvement to reduce stressors that damage reef health. One management technique is to create Marine Protected Areas (MPAs) that directly limit human activities such as fishing.
Coral aquaculture, also known as coral farming or coral gardening, is the cultivation of corals for commercial purposes or coral reef restoration. Aquaculture is showing promise as a tool for restoring coral reefs, which are dying off around the world. The process protects young corals while they are most at risk of dying. Small corals are propagated in nurseries and then replanted on the reef.
Les Kaufman is an evolutionary ecologist specializing in the biology and conservation of aquatic ecosystems. He has special expertise in coral reef biology, the evolution and ecology of tropical great lakes fishes, and ecosystem-based management of marine resources.
Organizations which currently undertake coral reef and atoll restoration projects using simple methods of plant propagation:
Euphyllia ancora is a species of hard coral in the family Euphylliidae. It is known by several common names, including anchor coral and hammer coral, or less frequently as sausage coral, ridge coral, or bubble honeycomb coral.
Carden Crea Wallace is an Australian scientist who was the curator/director of the Museum of Tropical Queensland from 1987 to 2003. She is an expert on corals having written a "revision of the Genus Acropora". Wallace was part of a team that discovered mass spawning of coral in 1984.
Tracy Ainsworth is a marine biologist and Scientia Professor at the University of New South Wales, working on coral reefs, and the biology of the Great Barrier Reef. Her research covers the biology of stresses, cells, disease, immunity and symbiosis. She was awarded the Dorothy Hill Medal for science, from the Australian Academy of Science, for research on coral reef, stresses and impacts of temperature on coral health.
The Museum of Underwater Art (MOUA) is a series of underwater art installations near Townsville, Australia. It is the only underwater art museum in the Southern Hemisphere and consists of three sculptures created by British sculptor Jason deCaires Taylor. The museum opened in 2020.
Iliana B. Baums is a professor at Pennsylvania State University known for her work on coral reef ecology.
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