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Vegetation is an assemblage of plant species and the ground cover they provide. It is a general term, without specific reference to particular taxa, life forms, structure, spatial extent, or any other specific botanical or geographic characteristics. It is broader than the term flora which refers to species composition. Perhaps the closest synonym is plant community, but vegetation can, and often does, refer to a wider range of spatial scales than that term does, including scales as large as the global. Primeval redwood forests, coastal mangrove stands, sphagnum bogs, desert soil crusts, roadside weed patches, wheat fields, cultivated gardens and lawns; all are encompassed by the term vegetation.
Landscape ecology is the science of studying and improving relationships between ecological processes in the environment and particular ecosystems. This is done within a variety of landscape scales, development spatial patterns, and organizational levels of research and policy. Concisely, landscape ecology can be described as the science of landscape diversity as the synergetic result of biodiversity and geodiversity.
Ecological succession is the process of change in the species structure of an ecological community over time. The time scale can be decades or more or less.
In ecology, a disturbance is a temporary change in environmental conditions that causes a pronounced change in an ecosystem. Disturbances often act quickly and with great effect, to alter the physical structure or arrangement of biotic and abiotic elements. A disturbance can also occur over a long period of time and can impact the biodiversity within an ecosystem.
Charles Henry Gimingham was a British botanist at the University of Aberdeen, patron of the Institute of Ecology and Environmental Management, former president of the British Ecological Society, and one of the leading researchers of heathlands and heathers.
A boreal ecosystem is an ecosystem with a subarctic climate located in the Northern Hemisphere, approximately between 50° to 70°N latitude. These ecosystems are commonly known as Taiga and are located in parts of North America, Europe, and Asia. The ecosystems that lie immediately to the south of boreal zones are often called hemiboreal.
Patch dynamics is an ecological perspective that the structure, function, and dynamics of ecological systems can be understood through studying their interactive patches. Patch dynamics, as a term, may also refer to the spatiotemporal changes within and among patches that make up a landscape. Patch dynamics is ubiquitous in terrestrial and aquatic systems across organizational levels and spatial scales. From a patch dynamics perspective, populations, communities, ecosystems, and landscapes may all be studied effectively as mosaics of patches that differ in size, shape, composition, history, and boundary characteristics.
James J. Kay was an ecological scientist and policy-maker. He was a respected physicist best known for his theoretical work on complexity and thermodynamics.
Paul A. Keddy is a Canadian ecologist. He has studied plant population ecology and community ecology in wetlands and many other habitats in eastern Canada and Louisiana, United States.
A plant community is a collection or association of plant species within a designated geographical unit, which forms a relatively uniform patch, distinguishable from neighboring patches of different vegetation types. The components of each plant community are influenced by soil type, topography, climate and human disturbance. In many cases there are several soil types present within a given plant community. This is because the soil type within an area is influenced by two factors, the rate at which water infiltrates or exits the soil, as well as the rate at which organic matter enters or decays from the soil. Plant communities are studied substantially by ecologists, due to providing information on the effects of dispersal, tolerance to environmental conditions, and response to disturbance of a variety of plant species, information valuable to the comprehension of various plant community dynamics.
Plant ecology is a subdiscipline of ecology which studies the distribution and abundance of plants, the effects of environmental factors upon the abundance of plants, and the interactions among and between plants and other organisms. Examples of these are the distribution of temperate deciduous forests in North America, the effects of drought or flooding upon plant survival, and competition among desert plants for water, or effects of herds of grazing animals upon the composition of grasslands.
A chronosequence describes a set of ecological sites that share similar attributes but represent different ages.
Monica G. Turner is an American ecologist known for her work at Yellowstone National Park since the large fires of 1988. She is currently the Eugene P. Odum Professor of Ecology at the University of Wisconsin–Madison.
The H.J. Andrews Experimental Forest, commonly referred to as Andrews Forest, is located near Blue River, Oregon, United States, and is managed cooperatively by the United States Forest Service's Pacific Northwest Research Station, Oregon State University, and the Willamette National Forest. It was one of only 610 UNESCO International Biosphere Reserves, until being withdrawn from the program as of June 14, 2017, and a Long Term Ecological Research site. It is situated in the middle of the Western Cascades.
Judith (Judy) H. Myers is a Canadian-American ecologist. In 2014 she was elected president of the Canadian Society for Ecology and Evolution. Professor Myers is well known for her decades-long research into plant-animal-microbe interactions, including insect pest outbreaks, viral pathogens of insects, and pioneering work on biological control of insects and plants, particularly invasive species. Throughout her career she has advocated strongly for both the public understanding of science and for increasing the number of women in the STEM subjects: Science, Technology, Engineering, and Mathematics.
Thomas Thorstein Veblen is an American forest ecologist and physical geographer known for his work on the ecology of Nothofagus forests in the Southern Hemisphere and on the ecology of conifer forests in the southern Rocky Mountains of the U.S.A. He is an Arts and Sciences College Professor of Distinction at University of Colorado at Boulder, USA (2006).
Dominique Bachelet is a senior climate change scientist and associate professor in Oregon State University, with over 38 years of education and work in the fields of climate change, fire, and ecology. She has worked to make science more accessible, by creating web based resources with various scientific organizations. She returned to Oregon State University in 2017 but has continued her outreach work, getting valuable information to students, scientists, and scholars.
Jiquan Chen is a landscape ecologist, primarily focused on nutrient flux, carbon cycling, bioenergy, and grassland ecology. He currently leads the LEES lab at Michigan State University.
Yude Pan is a senior research scientist with the Climate, Fire, and Carbon Cycle Sciences group of the Northern Research Station, USDA Forest Service, and a senior investigator of the Harvard Forest at Harvard University. Her work is in the fields of Ecosystem ecology and Global Change Biology. She studies terrestrial ecosystems and how environmental stressors affect complex interactions within those ecosystems. Much of her research focuses on forest ecosystems and how they relate to the carbon cycle as a whole, as well as forecasting complex effects of land use, climate change and air pollution on forest ecosystems.
References
- ↑ "Edward A. Johnson".
- ↑ "Home | Biogeoscience Institute | Research at UCalgary | University of Calgary".
- 1 2 3 4 5 "BGS Institute :: Director | Biogeoscience Institute | University of Calgary". Archived from the original on 2011-07-06.
- 1 2 3 "Edward A. Johnson - Lab Group".
- ↑ "Fire and vegetation dynamics studies north american boreal forest | Natural resource management, agriculture, horticulture and forestry | Cambridge University Press".
- ↑ "Environmental education and advocacy changing perspectives ecology and education | Ecology and conservation | Cambridge University Press".
- ↑ "Trove".
