A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur naturally on all continents except Antarctica and are found in most ecoregions of the Earth. Furthermore, grasslands are one of the largest biomes on Earth and dominate the landscape worldwide. There are different types of grasslands: natural grasslands, semi-natural grasslands, and agricultural grasslands. They cover 31–69% of the Earth's land area.
Abisko is a village in Sápmi (Lapland), in northern Sweden, roughly 200 km north of the Arctic Circle, and near Abisko National Park, located 4 km west of the village. It had 85 inhabitants as of 2005.
Species richness, or biodiversity, increases from the poles to the tropics for a wide variety of terrestrial and marine organisms, often referred to as the latitudinal diversity gradient. The latitudinal diversity gradient is one of the most widely recognized patterns in ecology. It has been observed to varying degrees in Earth's past. A parallel trend has been found with elevation, though this is less well-studied.
Ecological stoichiometry considers how the balance of energy and elements influences living systems. Similar to chemical stoichiometry, ecological stoichiometry is founded on constraints of mass balance as they apply to organisms and their interactions in ecosystems. Specifically, how does the balance of energy and elements affect and how is this balance affected by organisms and their interactions. Concepts of ecological stoichiometry have a long history in ecology with early references to the constraints of mass balance made by Liebig, Lotka, and Redfield. These earlier concepts have been extended to explicitly link the elemental physiology of organisms to their food web interactions and ecosystem function.
The Abisko Scientific Research Station (ANS) is a field research station managed by the Swedish Polar Research Secretariat. Situated on the south shore of Lake Torneträsk, it lies at the edge of the Abisko National Park. The station conducts ecological, geological, geomorphological and meteorological research in subarctic environments and each year about 500 scientists visit from all over the world. The varied geological, topographical and climatic conditions of the area allow it to be inhabited by a range of flora and fauna. These features, which have caused the area to be given National Park status, also make it an important place for scientific research, particularly of alpine and subalpine ecosystems.
A boreal ecosystem is an ecosystem with a subarctic climate located in the Northern Hemisphere, approximately between 50° and 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. There are a variety of processes and species that occur in these areas as well.
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 goal of the approach is to provide natural resource managers with information to anticipate and respond to short and long-term climate conditions.
Tropical ecology is the study of the relationships between the biotic and abiotic components of the tropics, or the area of the Earth that lies between the Tropic of Cancer and the Tropic of Capricorn. The tropical climate experiences hot, humid weather and rainfall year-round. While many might associate the region solely with the rainforests, the tropics are home to a wide variety of ecosystems that boast a great wealth of biodiversity, from exotic animal species to seldom-found flora. Tropical ecology began with the work of early English naturalists and eventually saw the establishment of research stations throughout the tropics devoted to exploring and documenting these exotic landscapes. The burgeoning ecological study of the tropics has led to increased conservation education and programs devoted to the climate. Tropical ecology provides a wealth of natural resources to humans, this includes contributing to the carbon cycle, with the ability to store 50% of carbon emissions as well as turnover 40% of global oxygen. However, despite the natural services provided by tropical ecology, deforestation is a threat of tropical rainforests. Any plant of interest can be exploited for commercial reasons and extraction of these specific plant species can be at a rapid rate without time for healthy regeneration. Most of the global plant biodiversity is hosted in tropical areas, however studies in this area is mostly covered by scientist from Northern countries. Inclusion of scientist from countries where rainforest is present is heavily encouraged because it extends global knowledge and research which advances scientific contributions, benefiting tropical ecology.
Malcolm Colin Press is a British ecologist, professor and Vice-Chancellor of Manchester Metropolitan University (MMU), in the United Kingdom.
The term phylogenetic niche conservatism has seen increasing use in recent years in the scientific literature, though the exact definition has been a matter of some contention. Fundamentally, phylogenetic niche conservatism refers to the tendency of species to retain their ancestral traits. When defined as such, phylogenetic niche conservatism is therefore nearly synonymous with phylogenetic signal. The point of contention is whether or not "conservatism" refers simply to the tendency of species to resemble their ancestors, or implies that "closely related species are more similar than expected based on phylogenetic relationships". If the latter interpretation is employed, then phylogenetic niche conservatism can be seen as an extreme case of phylogenetic signal, and implies that the processes which prevent divergence are in operation in the lineage under consideration. Despite efforts by Jonathan Losos to end this habit, however, the former interpretation appears to frequently motivate scientific research. In this case, phylogenetic niche conservatism might best be considered a form of phylogenetic signal reserved for traits with broad-scale ecological ramifications. Thus, phylogenetic niche conservatism is usually invoked with regards to closely related species occurring in similar environments.
Species sorting is a mechanism in the metacommunity framework of ecology whereby species distributions and abundances can be related to the environmental or biotic conditions in a particular habitat. The species sorting paradigm describes a system of habitat patches with different environmental conditions that organisms can move between. Species are able to disperse to patches with suitable environmental conditions, resulting in patterns where environmental conditions can predict the species found in a particular habitat.
Disease ecology is a sub-discipline of ecology concerned with the mechanisms, patterns, and effects of host-pathogen interactions, particularly those of infectious diseases. For example, it examines how parasites spread through and influence wildlife populations and communities. By studying the flow of diseases within the natural environment, scientists seek to better understand how changes within our environment can shape how pathogens, and other diseases, travel. Therefore, diseases ecology seeks to understand the links between ecological interactions and disease evolution. New emerging and re-emerging infectious diseases are increasing at unprecedented rates which can have lasting impacts on public health, ecosystem health, and biodiversity.
Patricia Monaghan is Regius Professor of Zoology in the Institute of biodiversity, animal health & comparative medicine at the University of Glasgow.
Elena Litchman is a professor of aquatic ecology at Michigan State University known for her research on the consequences of global environmental change on phytoplankton.
Megan Frederickson is a Canadian evolutionary biologist who is a professor of Ecology and Evolutionary Biology at the University of Toronto. Her research considers the evolution of cooperation and the ecological genetics of mutualism.
Liza Sheera Comita is an American ecologist and Professor of Tropical Forest Ecology in the School of the Environment at Yale University. Her research focuses on tropical tree species ecology and how spatial and temporal variation in early life-stages affects abundance and diversity of species in tropical forests.
Richard Simon Ostfeld is a Distinguished Senior Scientist at the Cary Institute of Ecosystem Studies in Millbrook, New York. He is best known for his work on the ecology of Lyme disease, which he began studying while monitoring the abundance of small mammals in the forests of Cary Institute property in the early 1990s.
Jennifer E. Smith is an American marine ecologist and coral reef expert who works at the Scripps Institution of Oceanography. Her research investigates how physical and biological processes impact the function of marine communities.
Serita D. Frey is an American academic and ecologist, who serves as Professor of Environmental Science at the University of New Hampshire. Her research considers how human activities impact terrestrial ecosystems.
Hannah Buckley is a New Zealand ecologist, and is a full professor in the school of science at the Auckland University of Technology, specialising in biological variation in community ecological diversity through time and space.
