Sentences with phrase «primary productivity»
"Primary productivity" refers to the process of plants and other organisms converting sunlight and nutrients into energy through photosynthesis. It measures the rate at which these organisms produce organic matter and ultimately provides the foundation for food chains and ecosystems. Full definition
It's the primary cause of the collapse of primary productivity in the oceans.
scientificamerican.com
First of all, increased CO2 does - under certain conditions - lead to increased primary productivity of many plants.
Immediately after the hurricane, maximum values for gross primary productivity were similar to earlier measurements and trees at the study sites produced new fine roots using stored carbon up to 11 years old.
With respect to all land plants, for example, satellite - based studies reveal net terrestrial primary productivity has increased by 6 — 13 % since the 1980s.
As long as primary productivity and photosynthesis works, oxygen's no problem.
And understanding primary productivity is important for understanding the changes in another compound of particular interest right now and for the foreseeable future: carbon dioxide.
Net primary productivity has also indirect effects on population density mediated by biodiversity and pathogens.
The forest's gross primary productivity, meanwhile, reduced by nearly 0.5 kg of carbon per m2 per year from its long - term mean of roughly 3 kg.
More fertility and primary productivity in the land, and less CO2 in the air!
Iron plays thus an essential role in governing the marine primary productivity and the efficiency of biological carbon pump.
This in turn pushes the global ocean's nutrient - rich, deep water closer to the surface, helping to create areas of high primary productivity in Antarctic waters, similar to areas of upwelling elsewhere in the world.
The effects of projected ocean acidification on primary productivity of the Arctic and subarctic shelf seas are found to be minimal, with the phytoplankton communities showing a high capacity to compensate for environmental change.
Interactions between carbon and nitrogen dynamics in estimating net primary productivity for potential vegetation in North America.
They also suggest that the documented 30 % increase in global primary productivity over the 20th century has likely enhanced uptake of atmospheric mercury, thereby practically offsetting increasing mercury emissions.
«NASA has access to large - scale oceanographic data sets ranging from primary productivity to ocean temperature, currents and wind,» Moore said.
Might be some proxy for total primary productivity, or biomass, or respiration, or photosynthesis, or chemistry of diatom shells or lack thereof in each slice of the sediment core.
We estimate a 30 per cent reduction in gross primary productivity over Europe, which resulted in a strong anomalous net source of carbon dioxide (0.5 Pg C yr - 1) to the atmosphere and reversed the effect of four years of net ecosystem carbon sequestration6.
«Among their many ecological roles, whales recycle nutrients and enhance primary productivity in areas where they feed.»
The 10 Earth System Models used here project similar trends in ocean warming, acidification, deoxygenation and reduced primary productivity for each of the IPCC's representative concentration parthways (RCP) over the 21st century.
Evidence for control of mercury accumulation rates in Canadian High Arctic lake sediments by variations of aquatic primary productivity
Photoautotrophic biofilms contribute significantly to intertidal primary productivity [43] and are the main food resource for many benthic grazers [44].
Environmental water improved water quality, stimulated primary productivity and helped to maintain regional scale aquatic invertebrate diversity.
However, in a new paper published in Proceedings of the National of Sciences USA (PNAS) scientists from the University of Helsinki, Faculty of Science, show that key environmental parameters, namely climate - related primary productivity, biodiversity, and pathogen stress have strong influence on the global pattern of population densities of ethnographically documented hunter - gatherers.
Results estimate that this specific population of grey reef sharks — believed to number approximately 8,300 individual animals — contributes a combined total of 94.5 kg (208.3 pounds) of nitrogen to the reef ecosystem per day, an amount that likely contributes substantially to reef primary productivity.
By taking ice samples for the last five winters and analyzing for the chlorophyll produced by algae and photosynthetic bacteria, Twiss and his team have determined that from November to April the Lake experiences great primary productivity, more so than in spring or summer.
Analysis of the data shows that biodiversity does indeed increase the resistance of grassland primary productivity for a broad range of climate events, whether wet or dry, moderate or extreme, and brief or prolonged.
Kim, J - S et al. (2017) Reduced North American terrestrial primary productivity linked to anomalous Arctic warming, Nature Geoscience: doi: 10.1038 / ngeo2986 Bastos, A. (2017) Warmer Arctic weaken vegetation, Nature Geoscience, doi: 10.1038 / ngeo2989
These nutrient rich waters fuel the high primary productivity seen in Carmel and Monterey Bays, which in turn support the high diversity of life observed in the water and on land at Point Lobos.
«These are the oceanic areas where food is most abundant, and it's driven by high primary productivity at the base of the food chain — these areas are the savanna grasslands of the sea,» say co-authors and project originators Barbara Block of Stanford University's Hopkins Marine Station and Daniel Costa, professor of ecology and evolutionary biology at the University of California, Santa Cruz.
Ocean acidification and rising temperatures may increase biofilm primary productivity but decrease grazer consumption
We use a terrestrial biosphere simulation model5 to assess continental - scale changes in primary productivity during 2003, and their consequences for the net carbon balance.
The Earth's terrestrial ecosystems are past their carrying capacity, and rather than increasing pressures upon primary productivity, the human enterprise must power down and enter an era of ecological restoration.
Similarly, models of probabilistic trophic networks predict Late Permian terrestrial vertebrate communities were likely prone to collapse via primary productivity disruption....»