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Net Primary Productivity in Coral Reef Sponges
Science, 1983Nine of the ten most common sponge species on the fore-reef slope of Davies Reef(Great Barrier Reef) contain symbiotic cyanobacteria. Six of the ten are net primary producers, with three times more oxygen produced by photosynthesis than is consumed during respiration.
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Soils as biotic constructs favouring net primary productivity
Geoderma, 1993Abstract Many, if not most, physical and chemical properties of soils required for plant growth are affected strongly by biotic processes. Feedback processes involving primary producers and decomposers may be involved in the development of properties that favour net primary productivity in terrestrial ecosystems.
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Methods of Estimating Aboveground Net Primary Productivity
2000Estimating net primary productivity (NPP) has been a central goal of basic and applied ecologists. Very important questions rely on good estimates of NPP: the global carbon balance, the location of the missing carbon sink, and predictions of global climate change (see Chapter 3). Primary productivity represents the major input of carbon and energy into
Osvaldo E. Sala, Amy T. Austin
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Net Primary Production in the Shortgrass Steppe
2008Net primary production (NPP), the amount of carbon or energy fixed by green plants in excess of their respiratory needs, is the fundamental quantity upon which all heterotrophs and the ecosystem processes they are associated with depend. Understanding NPP is therefore a prerequisite to understanding ecosystem dynamics.
William K. Lauenroth +1 more
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Net primary production and net ecosystem production of a boreal black spruce wildfire chronosequence
Global Change Biology, 2004AbstractNet primary production (NPP) was measured in seven black spruce (Picea mariana(Mill.) BSP)‐dominated sites comprising a boreal forest chronosequence near Thompson, Man., Canada. The sites burned between 1998 and 1850, and each contained separate well‐ and poorly drained stands.
Ben Bond‐Lamberty +2 more
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TURC: A diagnostic model of continental gross primary productivity and net primary productivity
Global Biogeochemical Cycles, 1996TURC, a diagnostic model for the estimation of continental gross primary productivity (GPP) and net primary productivity (NPP), is presented. This model uses a remotely sensed vegetation index to estimate the fraction of solar radiation absorbed by canopies, and an original parameterization of the relationship between absorbed solar radiation and GPP ...
Anne Ruimy +2 more
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Arctic Ocean Net Primary Production Model Code
Contributors listed in alphabetical order Model Description The Takuvik Net Primary Production (TNPP) model is a light photosynthesis model that uses satellite data to estimate the net primary production (NPP) in the Arctic Ocean. The model was run on a Pan-Arctic scale (above 45°N), at 4 km resolution, and comes from the updated depth and wavelengthTakuvik, UQAR
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Geographical dimensions of terrestrial net and gross primary productivity
Radiation and Environmental Biophysics, 1978The paper presents a comparative summary of previous attempts by the author to assess and map global primary productivity using environmental parameters as predictors. The individual components of the productivity process, net production, gross production, dark respiration as well as their regional rates are computed for 10 degree latitudinal belts.
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Nutrient Limitation Of Net Primary Production In Marine Ecosystems
Annual Review of Ecology and Systematics, 1988The question of nutrient limitation of primary production in estuaries and other marine ecosystems has engendered a great deal of debate. Although nitrogen is often named as the primary limiting nutrient in seawater (3, 17-19, 50, 52, 55, 61, 76, 80), this is by no means universally accepted. Many workers have argued that phosphorus is limiting (58, 71)
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