ABIOTIC
nonliving components of an ecosystem
ACCLIMATION
to become accustomed to a new climate or environment; to physically adapt
AGENT ORANGE
an herbicide used by the U.S. military to defoliate forests during the Vietnam War
AGRO-ECOSYSTEM
The area of land that is influenced by or that supports agricultural activity; land used for crops, pasture, and livestock, the adjacent uncultivated land that supports other vegetation and wildlife and the associated atmosphere, the underlying soil, ground and water, irrigation channels, and drainage networks
AIR QUALITY INDEX (AQI)
a numerical index used by government agencies to inform the public of air quality levels
ALGAL BLOOM
a rapid increase of accumulation in the population of algae (typically microscopic) in an aquatic system
ALKYLPHENOL
a commonly accepted marker of industrial and urban pollution; a family of organic compounds used in the production of detergents and other cleaning products
ALLUVIUM
a deposit of sand, mud, or other sediment formed by flowing water
ANADROMOUS
a species which migrates from the sea to freshwater to reproduce
ANNUAL CROPS
crops that grow, produce seeds, and die in a year and must be replanted each season
ANTHROPOGENIC
caused by or related to human action; originating in human activity
AQUACULTURE
Farming of aquatic organisms (plant or animal) in any water environment (ocean, pond, or river)
AQUEDUCT SYSTEM
a series of pipes, ditches, canals, tunnels, and supporting structures used to transport water from its source to its main distribution point
AQUIFER
an underground layer of permeable rock or soil that is saturated with water; a geological formation containing ground water
ARID
a region characterized by a severe lack of available water to the extent of hindering or preventing the growth and development of plant and animal life
ATMOSPHERE
the layer of gases surrounding Earth and held by Earth’s gravity
ATMOSPHERIC RIVERS
regions of intense moisture over oceans that transport moisture from lower altitudes to higher altitudes
ATOLL
a region characterized by a severe lack of available water to the extent of hindering or preventing the growth and development of plant and animal life
BACTERIA
a single-celled, prokaryotic organisms that lacks a nuclei
BALLAST WATER
water taken into the haul of a shipping vessel to provide stability
BIODIVERSITY
the variety of life on Earth or in a particular habitat or ecosystem
BIOLOGICAL CONTROL
biocontrol, a management practice that involves introducing a predator to an area to regulate the population of a pest
BIOMAGNIFICATION
the increased level of substances within the tissue of predators as a result of consuming organisms that contain bio-accumulated substances such as mercury
BIOMASS
material from plants and animals that can be used for energy
BIOTIC
the living or organic components of an ecosystem
BIRTH DEFECT
structural or functional abnormalities present at birth that cause physical or mental disability
BRINE
water saturated with salt; a liquid with high salinity
BROADCAST
to uniformly distribute fertilizer on a soil surface without working it into the soil
BYCATCH
a non-target organism that is caught unintentionally when harvesting a target species
CALCIUM CARBONATE
CaCO3; a common chemical compound composed of three main elements calcium, carbon and oxygen
CANCER
a type of disease characterized by unregulated cell growth
CARBON CREDITS
a permit that represents carbon removed from the atmosphere, which companies or governments can purchase to offset the carbon emissions they generate
CARBON SINK
a process or material in an environment that removes carbon dioxide from the atmosphere
CARCINOGENIC
cancer-causing
CARRYING CAPACITY
the population size that an area can support indefinitely
CESIUM-137
one of the common fission products of uranium nuclear power plants
CLEAN AIR ACT
U.S. law that authorizes the EPA to set standards for dangerous air pollutants and enforce those standards
CLEAN WATER ACT
U.S. federal legislation that regulates the release of point source pollution into surface waters and sets water quality standards for those waters
CLIMATE
long-term weather conditions in a particular region
CLIMATE CHANGE
a change in global climate patterns such as rainfall and average regional temperature
CLIMATOLOGY
the scientific study of Earth’s climates, climate variability, climate change, and effects of climate on the biosphere
COLIFORM BACTERIA
type of bacteria that are universally found in the feces of warm-blooded animals; commonly used as a water quality indicator
COLONIES
refers to individual organisms of the same species living closely together
COLONY COLLAPSE DISORDER (CCD)
a disorder in honey bees categorized by sudden loss of worker bees, lack of dead bodies, and delayed invasion from attackers
COMMODITY
a physical substance that is uniform in quality and can be bought and sold
CONDENSE
to change from a gas to a liquid
CONDUCTOR
a material that easily permits the flow of electrons, often an electric current
CONSERVATION
a political, environmental, and social movement to help protect natural resources and wildlife from exploitation
CONTAMINATION
to make something dangerous, dirty, or impure by adding something harmful or undesirable to it
CONTRACEPTION
a technique used to prevent pregnancy
CORAL BLEACHING
the expulsion of the algae living within coral’s tissues causing it to die
CORRELATION
a statistical relationship involving the dependence of two or more variables
CRITICALLY ENDANGERED
a species that is facing a very high risk of extinction
CRITTERCAM
a camera that is attached to a wild animal with intent of studying the animal’s behavior and ecology
CROP YIELD
the amount of product a crop produces per unit of land in a given time
CULLING
a method of population control that involves the killing of an entire family unit
DEFORESTATION
removal of forest areas by humans for non-forest use, often for agriculture
DESALINATION
the removal of salt from a water source to convert it to fresh water, often used with seawater
DESERTIFICATION
the increased degradation of drought-affected areas, causing them to become deserts
DIABETES
a metabolic disorder defined by high blood sugar and insulin resistance
DIOXINS
a group of chemically related compounds that are classified as environmental pollutants
DISRUPTIVE STIMULI
chemical, light, or audio repellents used to try and deter organisms
DISTILLATION
the process of separating substances in a mixture
DNA
deoxyribonucleic acid; found in all living organisms and contains genetic information
DROUGHT
an extended amount of time with little to no precipitation
ECOLOGICAL SOCIETY OF AMERICA
a nonpartisan, nonprofit organization of scientists founded to promote, conduct, and disseminate studies in the ecological sciences
ECOSYSTEM
all of the organisms in a given area interacting in a physical environment
EDNA
Environmental DNA; genetic material left behind by a species
EFFLUENT
liquid waste discharged into a body of water; outflow from a sewage treatment plant that is rich in nutrients
ELECTRIC FISH BARRIER
a tool that sends low-level electric currents into a body of water to cause discomfort in fish and cause them to move away from the affected area; used to regulate the movement of fish
EMERALD ASH BORER
a green beetle that was accidentally transported from Asia to North America in the 1990s and has caused widespread destruction of ash trees in the United States and Canada
EMISSIONS
the production and discharge of a gas
ENDANGERED
a species that is threatened with extinction
ENDOCRINE DISRUPTOR
a chemical that interferes with the endocrine system, typically mimicking a hormone or preventing a hormone from having effect
ENDOCRINE SYSTEM
the system cells, glands, and tissue within an organism that is responsible for secreting hormones into the bloodstream
ENTRAINMENT
the loss of fish during water diversion often occurs when fish enter irrigation systems and become isolated when diversion ends
ENVIRONMENTAL PROTECTION AGENCY (EPA)
a federal agency in the United States tasked with implementing legislation concerning the protection of the environment
ENVIRONMENTAL SUSTAINABILITY INDEX
a measure of a country’s overall progress toward environmental sustainability
ENZYME
a molecular protein that acts as a catalyst and facilitates complex biological reactions
EROSION
the process by which something is gradually worn away by natural forces (wind, water, or other natural agents)
EUROPEAN UNION
economic and political union of 28 member states that are located primarily in Europe
EUTROPHICATION
the process by which a body of water is enriched with nutrients (nitrogen and phosphorus), stimulating excessive growth of photosynthetic organisms like algae. Human activities can accelerate the process.
EXTINCTION
the complete loss of a species
EXTIRPATION
describes a species that is locally extinct in one or more areas within its historical range
FALLOUT
airborne radioactive particles that gradually fall back to Earth after a nuclear blast
FECUNDITY
related to fertility; the actual reproductive rate of an organism
FIELD TRIALS
small, controlled fields of genetically modified plants used to conduct research
FLOY TAG
a small piece of plastic attached to live fish as part of scientific studies; a company that produces tags used to identify live fish as part of studies specifically
FOLSOM LAKE
a reservoir in Northern California formed by the Folsom Dam that provides flood control, drinking water, hydroelectricity, and water for irrigation to the surrounding communities
FOOD AND DRUG ADMINISTRATION (FDA)
a federal agency of the United States government found within the Department of Health and Human Services, which is responsible for protecting the public health by assuring the safety, efficacy and security of human and veterinary drugs, biological products, medical devices, food supply, cosmetics, and products that emit radiation
FOSTERING
when a female cares for and raises an orphaned juvenile in addition to her own offspring or after the death of her biological offspring
FOUL BROOD DISEASE
a disease in bees in which bacteria attack larvae and kill them before they mature
FRACKING FLUID
a combination of sand, liquids, and chemicals used in the hydraulic fracturing process, which is pumped underground to break away natural gasses from permeable rock layers
FUNCTIONAL EXTINCTION
when a population becomes so reduced that it no longer plays an important role in the way an ecosystem functions
FUNGUS
a diverse group of eukaryotic single-celled or multicelled organisms that live by decomposing organic material
GAME RESERVATION
a controlled area used for wildlife conservation which sometimes allows regulated hunting
GENE
the hereditary material of an organism that directs the production of a particular protein and influences an individual’s traits
GENETIC DIVERSITY
the hereditary variability among individuals of a single population or within a species
GENETIC MARKER
a gene or short sequence of DNA used to identify a chromosome or to locate other genes on a genetic map
GENETIC MUTATION
a heritable change in the DNA sequence
GENOTYPE
the complete genetic content of an organism
GHOST TOWN
a human settlement, such as a town, that has few or no remaining inhabitants
GLOBAL WARMING
a scientifically observed and ongoing rise in the biosphere’s average temperature that is contributing to climate change
GMO
a genetically modified organism; an organism whose DNA has been altered with a gene from another species to produce a desired trait
GOLDEN RICE
a variety of rice that has been genetically modified to produce beta-carotene, a precursor of vitamin A
GRAPHITE MODERATOR
a nuclear reactor that uses carbon as a neutron moderator, which allows un.enriched uranium to be used as nuclear fuel
GREENHOUSE GASES
water vapor, carbon dioxide, methane, nitrous oxide, and ozone; gases that contribute the greenhouse effect and global climate change
GROSS DOMESTIC PRODUCT (GDP)
the total value of goods and services provided in a country during a one-year period
GROUNDWATER
the water beneath the surface of the ground, consisting largely of surface water that seeped into the ground
HABITAT
the environment in which an animal or plant species resides
HALLIBURTON LOOPHOLE
a provision included in the U.S. Energy Policy Act of 2005 that gave natural gas drilling and extraction companies exemptions from the Safe Drinking Water Act
HAULING OUT
leaving the water to stay on land between periods of foraging
HEGEMONY
a form of government where one state or group has cultural, economic, and military dominance over all others
HERBICIDE
a substance used to exterminate or slow the growth of plants
HIBERNATION
cessation from or slowing of activity during the winter
HIGH PRESSURE RIDGE
a region where the atmospheric pressure at the surface of the planet is greater than its surrounding environment
HOME RANGE
the area where an organism lives and travels
HYDRAULIC FRACTURING
aka fracking; the process of breaking up subsurface rock formations through the use of high-pressure liquids usually mixed with sand and chemicals to extract gas and oil
HYDROGEOLOGY
the study of the distribution and movement of water through the Earth
HYDROGRAPH
a graph showing the rate by which water flows past a specific point in a river over time, or a chart that displays a hydrologic variable over time
HYPOXIA
a condition in which a body of water contains inadequate amount of oxygen, compromising the health of aquatic organisms
IMMUNOCONTRACEPTION
a type of contraceptive technique that uses immunochemistry as opposed to hormones to prevent pregnancy
INACTIVE INGREDIENT
an ingredient that does not increase or affect the intended action or purpose of a formulated product, drug, or pesticide
INFRASTRUCTURE
the physical and organizational structures and facilities needed for a functioning society
INHOSPITABLE
an environment where organisms cannot grow or live easily
INSECTICIDE
chemicals used to kill insects
INVASIVE SPECIES
a nonnative species whose introduction is likely to cause environmental or economic harm; a nonnative species that disrupt the local ecosystem
IODINE-131
heavy radioactive isotope of iodine with a half-life of 8 days; a major product produced by uranium plutonium nuclear power plants
ISOTOPE
an atom of a given element that differs in the number of neutrons in its nucleus
IVORY
mammalian teeth or tusk composed of mostly dentin, the desirable white material in which elephant tusks are made
KEYSTONE SPECIES
a species whose presence in its ecosystem is necessary to prevent the system from collapse
LACTATION
when mammary glands (breast tissue) secretes milk, often occurring after a female has given birth and is supporting offspring
LANDSAT
a satellite imagery program first launched in 1972
LARVAE
the immature and often wormlike feeding form that hatches from the egg of many insects that have a metaphoric lifecycle
LETHAL CONTROL
a method of controlling wildlife populations that result in the death of individuals from the target population
LIMITING NUTRIENT
a nutrient in limited supply relative to others that when exhausted prevents further growth of an organism
MACRONUTRIENT
in the case of plants, phosphorus, nitrogen, and potassium; a nutrient needed in large amounts for normal growth to occur
MATRIARCH
the female who is the leader of a family unit
MICROORGANISM
an organism that cannot be seen with the human eye
MICROSCOPY
the practice of using a microscope to study objects
MIDDLE EAST
geographic region northeast of Africa and southwest of Asia that contains the country Syria
MIOCENE AGE
the first geological epoch of the Neogene period and extends from about 23.03 to 5.332 million years ago, this time period had a warmer global climate
MISSISSIPPI RIVER BASIN
the area covering much of the central United States that includes tributaries that drain into the Mississippi River
MOBBING
when more than one adult male attempts to mount a female in heat; often leads to serious injury and has been linked to a boost in testosterone and uneven distribution of gender in a population
MODIS IMAGES
Moderate Resolution Imaging Spectroradiometer; a satellite imaging instrument that views the entire Earth’s surface every 1-2 days
MONOCROP
a single crop produced year after year on the same land that is economically efficient but ultimately damaging to soil ecology
MONSANTO
an American multinational chemical and agricultural biotechnology company; the leading producer of genetically engineered seeds
MUSTH
a period in which a bull (male) elephant is ready to mate, characterized by increased aggression and a surge of reproductive hormones – mainly testosterone
NATIONAL ACADEMY OF SCIENCES
a non-profit society established by the U.S. congress in 1863 to provide independent and objective consultation on matters related to science and technology
NATIONAL PARKS
an area of land set aside by the national government of a country specifically to safeguard nature and wildlife biodiversity
NATIONAL TIGER RECOVERY PROGRAM
a conservation program enacted in 2011 by the Ministry of Forestry in Indonesia to double the number of wild Sumatran tigers by 2022
NATURAL GAS
a combustible mixture of gaseous hydrocarbons consisting mostly of methane
NEBRASKA SANDHILLS
a region of mixed-grass prairie on grass-stabilized sand dunes, it is the largest sand dune formation in the western hemisphere
NO-TILL
growing crops without disturbing the soil through tilling or plowing to increase soil organic matter and decrease soil erosion
NOBLE GAS
any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 0 (18) of the periodic table that is believed to be unreactive
NON-GMO PROJECT
a non-profit organization that verifies non-GMO products and educates consumers
NON-LETHAL CONTROL
a method of controlling wildlife populations through actions that do not harm the health of the target population
OCEAN ACIDIFICATION
the decrease of pH levels in the ocean due to the uptake of carbon dioxide from the atmosphere
OGALLALA AQUIFER
an aquifer located on the High Plains in the United States, it is composed of clay, sand, silt, and gravel
OZONE LAYER
a region of Earth’s atmosphere that absorbs most of the Sun’s ultraviolet (UV) radiation
PAPAYA RINGSPOT VIRUS (PRSV)
a virus that infects papayas and is transmitted by aphids. Infested papayas exhibit yellowing, leaf distortion, and severe mosaics. The papaya fruit will have bumps and a “ringspot.”
PARTICULATE MATTER
pieces of matter small enough to remain suspended in the air for long periods of time
PATHOGEN
a bacterial, viral, or fungal agent of disease
PESTICIDE
a substance that is used to prevent or kill animals or insects that damage plants or crops
PETROLEUM HYDROCARBONS
the primary molecular constituent in oil, gasoline, diesel, and other petroleum products; the simplest of organic compounds containing only carbon and hydrogen atoms
PHOTOSYNTHESIS
the conversion of sunlight, carbon dioxide, and water into glucose and oxygen by organisms for use as energy
PLANKTON
microscopic organisms that float freely in marine and fresh bodies of water PM10 particulate matter less than 10 micrometers in diameter
PM10
particulate matter less than 10 micrometers in diameter
POACHING
the illegal hunting, killing, or capturing of wild animals
POLLINATE
the transfer of pollen from the anther to the stigma of a plant often from one plan to another
POLYCHLORINATED BIPHENYLS (PCBS)
a broad range of man-made chemicals used as a coolant and flame retardant; a chemical known to be carcinogenic, neurotoxic, and cause developmental and reproductive disorders
POLYMER SHEET
a chemical compound or mixture of compounds formed by polymerization and consisting essentially of repeating structural units
POLYMERASE CHAIN REACTION (PCR)
a method to amplify copies of DNA using many cycles of DNA denaturation, primer annealing, and DNA polymerization
POLYP
the individual base of a coral; sedentary form of a coelenterate
POPULATION
a group of organisms that are of the same species, which reside in the same general geographic location and can interact and breed
PRECIPITATION
weather activity in the form of rainfall, hail, or snowfall
PRESERVE
a protected area set aside for the refuge and safety of plants and animals
PRIMARY FOREST
mature forests of native trees that have not been affected by deforestation
PROPAGANDA
use of communications to try and influence a person or group of people with often biased information
QUANTIFIABLE
the ability to be expressed or measured in terms of quantity
QUARANTINE
a state of enforced isolation, often imposed when a human or animal has been exposed to an infectious disease
RADIOACTIVE
atoms that spontaneously emit subatomic particles and/or energy; emitting ionizing radiation when decaying
RADIONUCLIDE
atoms with an unstable nucleus, characterized by the availability of excessive energy; can be naturally occurring or artificially produced
RANCH HAND
a U.S. Military Operation during the Vietnam War that involved spraying millions of liters of herbicide to rid Vietnam of crops and vegetation to expose roads and trails used by the Viet Cong
REDUCING EMISSIONS FROM DEFORESTATION AND FOREST DEGRADATION (REDD)
a mechanism to mitigate climate change through reducing net greenhouse gas emissions; under negotiation by the United Nations
RESERVOIR
a natural or artificial body of water that is used to store water
REVERSE OSMOSIS
a process by which a solvent passes through a porous membrane in the direction opposite to that for natural osmosis when subjected to a hydrostatic pressure greater than the osmotic pressure
RNA
ribonucleic acid; a molecular structure present in all living cells that carries and transmits commands to build proteins
ROTOR
the non-stationary part of a rotary motor or generator; contains electromagnets which are used by the generator to induce an electrical current
ROUNDTABLE ON SUSTAINABLE PALM OIL (RSPO)
a non-profit organization that aims to transform markets towards sustainable palm oil
RUNOFF
the portion of precipitation on land that is not absorbed by the ground but instead flows into nearby waterways; waste products that are carried by rain into surface waters
RUST BELT
referring to economic decline in a region of the United States surrounding the Great Lakes
SAFE DRINKING WATER ACT
Federal law setting standards for water quality across the United States to be enforced primarily by the U.S. Environmental Protection Agency
SALMONIDS
a fish belonging to the family Salmonidae which includes the salmon, trout, and whitefish
SANCTUARY
a protected area set aside for the refuge and safety of plants and animals
SECONDARY PRODUCTION
the rate at which primary consumer organisms convert food into their own biomass
SEDIMENT
a solid material that moves and settles in a different location, often from erosion
SHOAL
a piece of land where moving water promotes sediment deposition, such as a sandbar
SNOWPACK
a layer of compacted snow on the ground that often accumulates in high altitudes for long periods of time
STAND
a contiguous area that contains a number of relatively homogeneous trees or have a common set of characteristics.
STATOR
the stationary part of a rotary motor or generator; contains conductors on which electric current is induced by the rotation of the rotor
SYMBIOTIC RELATIONSHIP
a close relationship between two organisms in which they mutually benefit
THERMAL PROCESS
a process by which phosphate rock is heated to create phosphorus pentoxide, which is then dissolved in dilute phosphoric acid to form very pure phosphoric acid
THYROID CANCER
cancer originating in the thyroid gland, which is located in the front of the neck
TOPOGRAPHY
surface features or an area or a region on a map
TRANSLOCATION
immobilizing and transporting one or more individuals of a population from an area of high population density to an area of lower population density where they will have less of an environmental impact
TROPICAL STORM
a localized, powerful storm that forms in tropical areas
TSUNAMI
a series of high sea waves caused by an earthquake, submarine landslide, or other disturbance
TURBIDITY
a measure of the amount of suspended solids in water
VASCULAR
of or relating to a channel for the conveyance of a body fluid (as blood of an animal or sap of a plant)
VIRUS
an acellular particle containing a genome that can replicate only inside a cell; a noncellular pathogen
WATER STRESS
a lack of sufficient water resources available to meet the demands of water usage
WATER TABLE
the planar level at which water-saturated soil or rock meets unsaturated ground
WEANING
a period in which young mammals transition to sources of food other than their mother’s milk
WESTERLIES
consisting of the winds that blow from the west towards the east; a belt of major air currents in the mid-latitudes of the northern and southern hemispheres
WET ACID PROCESS
a process by which phosphate rock is dissolved in sulfuric acid forming phosphoric acid and waste products
WORLD HEALTH ORGANIZATION (WHO)
an agency of the United Nations that promotes health and control of diseases around the world
