Sentences with phrase «natural background rate»

All of these trends can have an impact on other species, and while the exact causes are difficult to establish, current animal and plant species extinction rates are estimated to be at least 100 times the natural background rate [33,82,83,84].

According to the World Conservation Union, present extinction rates are 50 to 500 times the natural background rate and up to 52 percent of species are threatened with extinction (http://www.iucn.org/themes/ssc/index.htm).

«The Australian National University announced the discovery on Sunday, claiming evidence shows human - caused greenhouse gas emission during the past 45 years has increased the rate of temperature rise to 1.7 degree Celsius per century, «dwarfing the natural background rate,» according to Will Steffen, a climate change expert and ANU professor.»

The law specifically addresses the issue of landslide control — with a goal of not increasing the natural background rate or magnitude of landslides as a result of forest practices.

Researchers can not agree on the natural background rate at which mutations appear in mitochondrial DNA.

Except for Chernobyl, those are natural background rates.

Not exact matches

Comparing the two types of mutations allowed the team to spot genes that have had changes favoured by natural selection while taking into account the background mutation rate.

These words are: ECOLOGY, BIOSPHERE, BIOTIC FATORS, ABIOTIC FACTORS, POPULATION, BIOLOGICAL COMMUNITY, BIOME, ORGANISM, HABITAT, NICHE, SYMBIOSIS, PREDATION, MUTUALISM, COMMENSALISM, PARASITISM, AUTOTROPH, HETEROTROPH, HERBIVORE, CARNIVORE, OMNIVORE, DETRITIVORES, TROPHIC LEVEL, FOOD CHAIN, FOOD WEB, BIOMASS, MATTER, NUTRIENT BIOCHEMICAL CYCLE, NITROGEN FIXATION, DENITRIFICATION, COMMUNITY, LIMITING FACTOR, TOLERANCE, ECOLOGICAL SUCCESSION, PRIMARY SUCCESSION, CLIMAX COMMUNITY, SECONDARY SUCCESSION, TUNDRA, CLIMATE, LATITUDE, WEATHER, BOREAL FOREST, TEMPERATE FOREST, WOODLANDS, GRASSLAND, DESERT, TROPICAL SAVANNA, TROPICAL SEASONAL FOREST, TROPICAL RAIN FOREST, SEDIMENT, LITTORAL ZONE, PROFUNDAL ZONE, PLANKTON, WETLANDS, ESTUARY, NTERTIDAL ZONE, PHOTIC ZONE, APHOTIC ZONE, BENTHIC ZONE, ABYSSAL ZONE, POPULATION DENSITY, DISPERSION, DENSITY - INDEPENDENT FACTOR, DENSITY - DEPENDENTLY FACTOR, POPULATION GROWTH RATE, EMIGRATION, IMMIGRATION, CARRYING CAPACITY, DEMOGRAPHIC TRANSISTIONS, ZERO POPULATION GROWTH, AGE STRUTURE, EXTINCTION, BIODIVERSITY, GENETIC DIVERSITY, SPECIES DIVERSITY, ECOSYSTEM DIVERSITY, BACKGROUND EXTINCTION, MASS EXTINCTION, NATURAL RESOURCES, OVER EXPLOITATION, HABITAT FRAGMENTATION, BIOLOGICAL MAGNIFICATION, EUTROPHICATION, INTRODUCED SPECIES, RENEWABLE RESOURCES, NONRENEWABLE RESOURCES, NONRENEWABLE RESOURCES, SUSTAINABLE USE, ENDEMIC, BIOLOGICAL AUGMENTATION, BIOREMEDIATION, PRODUCER, CONSUMER, FUNDAMENTAL NICHE, PIONEER SPECIES, REALIZED NICHE, LIMITING FACTOR, PREY, ENERGY PHYRAMIND, PRIMARY CONSUMER, SECONDARY CONSUMER, HOST, GREEN HOUSE EFFECT, POLAR ZONE, TROPICAL ZONE, CANOPY, DECIDUOU, CONIFEROUS, HUMUS

The seismicity rate is now about 600 times greater than the background seismicity rate, and is very unlikely the result of a natural process.

With a background in regulated utility issues, Matt has worked directly with electric, water, and natural gas utilities to advance best practices in demand response, demand side management, program design, and alternative rate mechanisms at Comverge, the National Association of Water Companies and the Institute for Electric Efficiency at the Edison Foundation.

Specifically, smoothing sea - level data (adjusting for natural variability of ENSO) over the past century fits most closely with a 4th degree polynomial model, and there has very likely not been any slowing in the longer - term background rate of sea level rise over the period of the tropospheric «pause».

There is an instantaneous rate of increase (nominally — see below) in greenhouse gas forcing of 1E - 9 W / m2 — set against a background of immense natural variability.

So the current rate of 3 cm per decade of sea level rise is only 1/2 of the background natural rate of 6 cm per decade.

There is an instantaneous rate of increase (nominally) in greenhouse gas forcing of 1E - 9 W / m2 — set against a background of immense natural variability.

DLR does increase the skin temperature but the increased evaporation takes away the energy that came from the DLR before it can either progress downward or slow down the upward rate of flow from the natural background processes.

Estimating the natural background atmospheric deposition rate of mercury utilizing ombrotrophic bogs in southern Sweden

The study's authors find that over the past 1,000 years, the average extinction rate is more than ten times larger than the natural background extinction rate from the fossil record, and recently has reached levels almost 400 times faster than the average natural extinction rate.

The advocate scientists only want to focus on the bad effects of warming, some large percentage of which is naturally occurring at a background rate anyway (6mm / year background rate of sea level rise given 120 meters over 20,000 years — that is double the current rate of 3mm / year rise and how much of that is natural?).