搜索结果: 16-30 共查到“理学 primary production”相关记录34条 . 查询时间(0.109 秒)
Evaluation of satellite based indices for gross primary production estimates in a sparse savanna in the Sudan
Evaluation satellite based indices gross primary production sparse savanna
2010/1/19
One of the more frequently applied methods for integrating controls on primary production through satellite data is the Light Use Efficiency (LUE) approach. Satellite indices such as the Normalized Di...
Could stratospheric ozone depletion lead to enhanced aquatic primary production in the polar regions?
stratospheric ozone depletion enhanced aquatic primary production the polar regions
2014/4/21
We study the effects of ozone depletion on primary production in ice-covered and open polar waters using a spectral radiative transfer model combined with a parameterization of the inhibition of marin...
Heterotrophic bacterial production in the eastern South Pacific:longitudinal trends and coupling with primary production
Heterotrophic bacterial production eastern South Pacific longitudinal trends primary production
2010/1/15
Spatial variation of heterotrophic bacterial production and phytoplankton primary production were investigated across the eastern South Pacific Ocean (−141° W, −8° S to −72° W, ͨ...
Could stratospheric ozone depletion lead to enhanced aquatic primary production in the polar regions?
Could stratospheric ozone depletion enhanced aquatic primary production the polar regions?
2014/4/18
We study the effects of ozone depletion on primary production in ice-covered and open polar waters using a spectral radiative transfer model combined with a parameterization of the inhibition of marin...
The effects of grazing by the snail, Lymnaea elodes, on benthic N2 fixation and primary production in oligotrophic, arctic lakes
snail Lymnaea elodes on benthic N2 fixation primary production oligotrophic arctic lakes
2014/4/21
This study assessed whether grazing by the snail, Lymnaea elodes, limits benthic dinitrogen (N2) fixation and primary production in nitrogen (N)-limited oligotrophic lakes near Toolik Field Station on...
Light availability in the coastal ocean:impact on the distribution of benthic photosynthetic organisms and their contribution to primary production
Light availability coastal ocean benthic photosynthetic organisms primary production
2010/1/13
One of the major features of the coastal zone is that part of its sea floor receives a significant amount of sunlight and can therefore sustain benthic primary production by seagrasses, macroalgae, mi...
Primary production in two shallow lakes with contrasting plant form dominance: A paradox of enrichment?
Primary production contrasting plant
2014/5/5
We estimated total lake plant biomass and primary net production in two shallow Swedish lakes that differ in
nutrient loading and plant form dominance. In clearwater Lake Krankesjo¨n (10 mg chlorophy...
Phytoplankton response to nutrient enrichment in an urbanized estuary: Apparent inhibition of primary production by overeutrophication
Phytoplankton response nutrient enrichment
2014/4/30
Phytoplankton response to nutrients was examined with a 26-yr database from the Delaware Estuary. Biomassnormalized primary production did not increase linearly with increasing nutrient concentrations...
The effect of ultraviolet radiation on freshwater planktonic primary production: The role of recovery and mixing processes
The effect of ultraviolet radiation freshwater planktonic primary production The role of recovery mixing processes
2014/5/13
We used a spectrally resolved kinetic model to calculate ultraviolet radiation (UVR) and photosynthetic active radiation (PAR)-dependent photoinhibitory losses in planktonic primary production in a la...
Threshold of gross primary production for planktonic metabolic balance in the Southern Ocean: An experimental test
Threshold of gross primary production planktonic metabolic balance Southern Ocean An experimental test
2014/5/9
The proposed threshold planktonic gross primary production (GPP) value for O2 of 2.05 mmol m-3 d-1 separating net heterotrophic from net autotrophic communities in the Southern Ocean was tested experi...
Primary production calculations in the Mid-Atlantic Bight, including effects of phytoplankton community size structure
Primary production calculations Mid-Atlantic Bight including effects phytoplankton community size structure
2014/5/9
We developed an absorption-based primary production model that includes the effects of phytoplankton community size structure for the continental margin and adjoining Gulf Stream waters of the Middle ...
Relationship between net and gross primary production in the Sagami Bay, Japan
Relationship gross primary production
2014/5/13
Net and gross primary production (GPP), based on the incorporation of
13
C-labeled inorganic carbon into particulate carbon and O2
production, were compared from September 2001 to July 2003 in Saga...
Effect of UV-B and different PAR intensities on the primary production of the mixotrophic planktonic ciliate Stentor araucanus
UV-B different PAR intensities primary production mixotrophic planktonic ciliate Stentor araucanus
2014/5/9
Stentor araucanus is a mixotrophic ciliate that, in Andean lakes, inhabits the upper epilimnetic levels, which are commonly avoided by other planktonic organisms. This freshwater heterotrich has dark ...
Benthic primary production and nutrient cycling in sediments with benthic microalgae and transient accumulation of macroalgae
Benthic primary production nutrient cycling sediments benthic microalgae transient accumulation of macroalgae
2014/5/22
Annual rates of sediment denitrification and sediment-water fluxes of oxygen and nutrients were quantified at two shallow locations, Virksund and Ulbjerg, in the Limfjorden, Denmark. The sediment was ...
Phytoplankton primary production and photosynthetic parameters in reservoirs along a gradient of watershed land use
Phytoplankton primary production photosynthetic parameters reservoirs along a gradient watershed land use
2014/5/20
We investigated how watershed land use (a gradient of agricultural vs. forested land) relates to phytoplankton primary production (PPr) and photosynthetic parameters in 12 reservoirs in Ohio and exami...