Kelp forests are under water areas with a high density of kelp, which covers a large part of the world's coastlines. They are recognized as one of the most productive and dynamic ecosystems on Earth. Smaller areas of anchored kelp are called kelp beds. Kelp forests occur worldwide throughout temperate and polar coastal oceans. In 2007, kelp forests were also discovered in tropical waters near Ecuador. In context, algal kelp forest combined with coral reefs account for less than 1% of global primary productivity.
Regime shifts are large, abrupt, persistent changes in the structure and function of ecosystems, the climate, financial systems or other complex systems. A regime is a characteristic behaviour of a system which is maintained by mutually reinforced processes or feedbacks. Regimes are considered persistent relative to the time period over which the shift occurs. The change of regimes, or the shift, usually occurs when a smooth change in an internal process (feedback) or a single disturbance triggers a completely different system behavior. Although such non-linear changes have been widely studied in different disciplines ranging from atoms to climate dynamics, regime shifts have gained importance in ecology because they can substantially affect the flow of ecosystem services that societies rely upon, such as provision of food, clean water or climate regulation. Moreover, regime shift occurrence is expected to increase as human influence on the planet increases – the Anthropocene – including current trends on human induced climate change and biodiversity loss. When regime shifts are associated with a critical or bifurcation point, they may also be referred to as critical transitions.
Intertidal ecology is the study of intertidal ecosystems, where organisms live between the low and high tide lines. At low tide, the intertidal is exposed whereas at high tide, the intertidal is underwater. Intertidal ecologists therefore study the interactions between intertidal organisms and their environment, as well as between different species of intertidal organisms within a particular intertidal community. The most important environmental and species interactions may vary based on the type of intertidal community being studied, the broadest of classifications being based on substrates—rocky shore and soft bottom communities.
Marine ecosystems are the largest of Earth's aquatic ecosystems and are distinguished by waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content. Marine waters cover more than 70% of the surface of the Earth and account for more than 97% of Earth's water supply and 90% of habitable space on Earth. Marine ecosystems include nearshore systems, such as the salt marshes, mudflats, seagrass meadows, mangroves, rocky intertidal systems and coral reefs. They also extend outwards from the coast to include offshore systems, such as the surface ocean, pelagic ocean waters, the deep sea, oceanic hydrothermal vents, and the sea floor. Marine ecosystems are characterized by the biological community of organisms that they are associated with and their physical environment.
Jane Lubchenco is an American environmental scientist and marine ecologist who teaches and conducts research at Oregon State University. Her research interests include interactions between the environment and human well-being, biodiversity, climate change, and sustainable use of oceans and the planet. From 2009 to 2013, she served as Administrator of NOAA and Under Secretary of Commerce for Oceans and Atmosphere. In February 2021, she was appointed by President Joe Biden to serve as Deputy Director for Climate and Environment in the White House Office of Science and Technology Policy.
Paul Kuykendall Dayton is a biological oceanographer and marine ecologist at Scripps Institution of Oceanography. Dayton works in Benthic Ecology, Marine Conservation & Policy, Evolution & Natural History, and General Ecology.
Ecological forecasting uses knowledge of physics, ecology and physiology to predict how ecological populations, communities, or ecosystems will change in the future in response to environmental factors such as climate change. The ultimate goal of the approach is to provide people such as resource managers and designers of marine reserves with information that they can then use to respond, in advance, to future changes, a form of adaptation to global warming.
Jacqueline Myriam McGlade is a British-born Canadian marine biologist and environmental informatics professor. Her research concerns the spatial and nonlinear dynamics of ecosystems, climate change and scenario development. She is currently professor of resilience and sustainable development at the University College London Institute for Global Prosperity and Faculty of Engineering, UK, and professor at Strathmore University in the Institute for Public Policy and Governance, Kenya.
Jeremy Bradford Cook Jackson is an American ecologist, paleobiologist, and conservationist. He is an emeritus professor at the Scripps Institution of Oceanography, senior scientist emeritus at the Smithsonian Institution, and visiting scientist at the American Museum of Natural History Center for Biodiversity and Conservation. He studies threats and solutions to human impacts on the environment and the ecology and evolution of tropical seas. Jackson has more than 170 scientific publications and 11 books, with nearly 40,000 citations listed on Google Scholar.
Robert Treat "Bob" Paine III was an American ecologist who spent most of his career at the University of Washington. Paine coined the keystone species concept to explain the relationship between Pisaster ochraceus, a species of starfish, and Mytilus californianus, a species of mussel.
A nutrient cycle is the movement and exchange of organic and inorganic matter back into the production of matter. Energy flow is a unidirectional and noncyclic pathway, whereas the movement of mineral nutrients is cyclic. Mineral cycles include the carbon cycle, sulfur cycle, nitrogen cycle, water cycle, phosphorus cycle, oxygen cycle, among others that continually recycle along with other mineral nutrients into productive ecological nutrition.
Michael J. Kennish is an American marine scientist and a research professor in the Institute of Marine and Coastal Sciences at Rutgers University in New Brunswick, New Jersey. He is best known for his work on the effects of human activities on estuarine and marine environments.
Isabelle M. Côté is a Canadian professor of marine ecology at Simon Fraser University. Previously, she was a faculty member at the University of East Anglia in Norwich, UK. She has published more than 100 peer-reviewed articles on behavioural ecology, coral reef ecology, and conservation.
Aaron M. Ellison is the Senior Research Fellow in Ecology at Harvard University, Deputy Director of the Harvard Forest, and a semi-professional photographer, writer, and creative artist. Until 2018, he also was an adjunct research professor at the University of Massachusetts in the Departments of Biology and Environmental Conservation. Ellison has both authored and co-authored numerous scientific papers, books, book reviews and software reviews. In 2012 he was elected a fellow of the Ecological Society of America, was the editor-in-chief of Ecological Monographs from 2008 to 2015, and is currently a senior editor of Methods in Ecology and Evolution. For more than 30 years, Ellison has studied food-web dynamics and community ecology of wetlands and forests; the evolutionary ecology of carnivorous plants; the responses of plants and ants to global climate change; application of Bayesian statistical inference to ecological research and environmental decision-making; and the critical reaction of Ecology to Modernism.
Deborah K. Steinberg is an American Antarctic biological oceanographer who works on interdisciplinary oceanographic research programs. Steinberg's research focuses on the role that zooplankton play in marine food webs and the global carbon cycle, and how these small drifting animals are affected by changes in climate.
The UBC Institute for the Oceans and Fisheries (IOF) is a research unit at the University of British Columbia (UBC) that was formed in 2015 by incorporating members from the former UBC Fisheries Centre, as well as a subset of researchers that are conducting marine related research at UBC. Members of the IOF are drawn primarily from the Departments of Earth, Ocean and Atmospheric Sciences, Zoology and Botany. The UBC Institute for the Oceans and Fisheries brings together a community of Canadian and international experts in ocean and freshwater species, systems, economics, and issues to provide new insights into how global marine systems function, and the impacts of human activity on those systems. It is working towards a world in which the oceans are healthy and their resources are used sustainably and equitably. IOF is located at The University of British Columbia, and promotes multidisciplinary study of aquatic ecosystems and broad-based collaboration with researchers, educators, maritime communities, government, NGOs, and other partners.
Gretta T. Pecl is an Australian marine ecologist who is Director of the Centre for Marine Socioecology (CMS) at the University of Tasmania and an Australian Research Council Future Fellow. Her work is focuses on species and ecosystem responses to climate change, and the development of adaptation options for natural resource management. She is on the editorial board of Springer Nature's Reviews in Fish Biology and Fisheries, and a Subject Editor for Ecography.
Human activities affect marine life and marine habitats through overfishing, habitat loss, the introduction of invasive species, ocean pollution, ocean acidification and ocean warming. These impact marine ecosystems and food webs and may result in consequences as yet unrecognised for the biodiversity and continuation of marine life forms.
Patricia Ann Wheeler is a retired American phycologist and oceanographer. She is known for her work physiology and ecology of marine phytoplankton and primary production in marine ecosystems.
Sivasankaran Bijoy Nandan is a Professor, in Marine Biology, Cochin University of Science & Technology. He has expertise in teaching, research, and development activities in the broad area of Aquatic Ecosystem Characterisation, Conservation, Restoration and Management, Carbon Dynamics & Community Ecology, Communities Ecology & Biology, Eco-toxicology and Biology of Polar Communities.
