Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level. Biodiversity is not distributed evenly on Earth; it is usually greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than 10% of earth's surface and contain about 90% of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural processes that sustain life.
Freshwater ecosystems are a subset of Earth's aquatic ecosystems. They include lakes, ponds, rivers, streams, springs, bogs, and wetlands. They can be contrasted with marine ecosystems, which have a larger salt content. Freshwater habitats can be classified by different factors, including temperature, light penetration, nutrients, and vegetation. There are three basic types of freshwater ecosystems: Lentic, lotic and wetlands. Freshwater ecosystems contain 41% of the world's known fish species.
Controlledecological life-support systems are a self-supporting life support system for space stations and colonies typically through controlled closed ecological systems, such as the BioHome, BIOS-3, Biosphere 2, Mars Desert Research Station, and Yuegong-1.
A bioindicator is any species or group of species whose function, population, or status can reveal the qualitative status of the environment. The most common indicator species are animals. For example, copepods and other small water crustaceans that are present in many water bodies can be monitored for changes that may indicate a problem within their ecosystem. Bioindicators can tell us about the cumulative effects of different pollutants in the ecosystem and about how long a problem may have been present, which physical and chemical testing cannot.
Hydrobiology is the science of life and life processes in water. Much of modern hydrobiology can be viewed as a sub-discipline of ecology but the sphere of hydrobiology includes taxonomy, economic and industrial biology, morphology, and physiology. The one distinguishing aspect is that all fields relate to aquatic organisms. Most work is related to limnology and can be divided into lotic system ecology and lentic system ecology.
Aquatic biomonitoring is the science of inferring the ecological condition of rivers, lakes, streams, and wetlands by examining the organisms that live there. While aquatic biomonitoring is the most common form of biomonitoring, any ecosystem can be studied in this manner.
The U.S. Army Research Institute of Environmental Medicine (USARIEM) is the U.S Army’s main institution and facility for military environmental medicine and exercise physiology research. It is located at Natick, Massachusetts, within the U.S. Army Soldier Systems Center (SSC) installation, but is a subordinate lab of the U.S. Army Medical Research and Materiel Command (USAMRMC), headquartered at Fort Detrick, Maryland, USA.
A hibernaculum is a place in which an animal seeks refuge, such as a bear using a cave to overwinter. The word can be used to describe a variety of shelters used by many kinds of animals, including insects, toads, lizards, snakes, bats, rodents, and primates of various species.
Springtails (Collembola) form the largest of the three lineages of modern hexapods that are no longer considered insects. Although the three orders are sometimes grouped together in a class called Entognatha because they have internal mouthparts, they do not appear to be any more closely related to one another than they are to all insects, which have external mouthparts.
In analytical chemistry, biomonitoring is the measurement of the body burden of toxic chemical compounds, elements, or their metabolites, in biological substances. Often, these measurements are done in blood and urine. Biomonitoring is performed in both environmental health, and in occupational safety and health as a means of exposure assessment and workplace health surveillance.
IISD Experimental Lakes Area is an internationally unique research station encompassing 58 formerly pristine freshwater lakes in Kenora District Ontario, Canada. In response to the International Joint Commission (IJC)'s 1965 recommendations related to transboundary pollution, the federal and provincial governments set aside these lakes to study water pollution. During the 1970s and 1980s, David Schindler, who was at that time 'Canada's leading ecologist', conducted a series of innovative, landmark large-scale experiments in ELA on eutrophication that led to the banning of phosphates in detergents. In an unexpected and controversial move that was widely condemned by the scientific community in 2012 the ELA was de-funded by the Canadian Federal Government. The facility is now managed and operated by the International Institute for Sustainable Development (IISD) and has a mandate to investigate the aquatic effects of a wide variety of stresses on lakes and their catchments. IISD-ELA used the whole ecosystem approach and makes long-term, whole-lake investigations of freshwater focusing on eutrophication.
John P. Smol, is a Canadian ecologist, limnologist and paleolimnologist who is a Distinguished University Professor in the Department of Biology at Queen's University, Kingston, Ontario, where he also held the Canada Research Chair in Environmental Change for the maximum of three 7-year terms (2001–2021). He founded and co-directs the Paleoecological Environmental Assessment and Research Lab (PEARL).
The International Institute for Sustainable Development (IISD) is an independent think tank founded in 1990 working to shape and inform international policy on sustainable development governance. The institute has three offices in Canada - Winnipeg, Ottawa, and Toronto, and one office in Geneva, Switzerland. It has over 150 staff and associates working in over 30 countries.
The Biotron is a research facility located at the University of Wisconsin-Madison that "provides controlled environments and climate-controlled greenhouses to support plant, animal, and materials research for university, non-profit, and commercial clients."
Climate change and invasive species refers to the process of the environmental destabilization caused by climate change. This environmental change facilitates the spread of invasive species — species that are not historically found in a certain region, and often bring about a negative impact to that region's native species.
An increasing number of scientific studies are reporting substantial declines in insect populations worldwide. Most commonly, the declines involve reductions in abundance, though in some cases entire species are going extinct. The declines are far from uniform. In some localities, there have been reports of increases in overall insect population, and some types of insects appear to be increasing in abundance across the world.
Alan R. Emery is a Canadian marine biologist, museum professional, environmental researcher, documentary writer, and photographer/videographer. He is currently CEO of KIVU Nature Inc. and founding member of the Stable Climate group. Alan Emery was a research scientist with the Ontario Ministry of Natural Resources (1968-1972), curator of Ichthyology and Herpetology at the Royal Ontario Museum (1969-1983), and director/president of the Canadian Museum of Nature. Emery has researched and published in ichthyology, marine science, museum management, traditional environmental knowledge, and climate change science. He is also a nature photographer, videographer, and documentary writer. He is recognized for his work on marine and freshwater fishes, particularly coral reef and damselfish ecology, his role as director/president overseeing transitions in the history of the Canadian Museum of Nature, for creating guidelines for best practice in the collaborative integration of Traditional Environmental Knowledge into environmental science and management decisions, and for his work on environmental impacts and climate change.
Brian Branfireun is a Canadian environmental scientist. He held a Canada Research Chair (2010-2020) and is a professor at Western University. He studied climate change and directed a laboratory in Western's Biotron for the study of speciated trace metals in the environment such as mercury and arsenic.
"Assisted migration is the human-assisted movement of populations or species in response to climate change." This is the definition offered in a nontechnical document published by the United States Forest Service in 2023, suggesting that this form of climate adaptation "could be a proactive, pragmatic tool for building climate resilience in our landscapes."
