搜索结果: 1-14 共查到“海洋生物学 primary production”相关记录14条 . 查询时间(0.152 秒)
Advective transport of diazotrophs and importance of their nitrogen fixation on new and primary production in the western Pacific warm pool
Advective transport diazotrophs importance their nitrogen fixation new primary production in the western Pacific warm pool
2014/4/2
The western Pacific warm pool (WPWP) is a region of low nutrient and chlorophyll concentrations in which new production is generally considered to be supported by upward fluxes of nitrate from the dee...
Partitioning of primary production among giant kelp (Macrocystis pyrifera), understory macroalgae, and phytoplankton on a temperate reef
giant kelp understory macroalgae phytoplankton
2014/4/4
We experimentally investigated the response of phytoplankton and understory macroalgae to canopies of giant
kelp, Macrocystis pyrifera, by following changes in their biomass and net primary productio...
Terrestrial organic matter and light penetration: Effects on bacterial and primary production in lakes
Terrestrial organic matter light penetration on bacterial primary production in lakes
2014/4/17
We investigated productivity at the basal trophic level in 15 unproductive lakes in a gradient ranging from clear-water to brown-water (humic) lakes in northern Sweden. Primary production and bacteria...
Thresholds of gross primary production for the metabolic balance of marine planktonic communities
Thresholds of gross primary production metabolic balance marine planktonic communities
2014/4/18
The notion that less productive marine planktonic communities tend to be heterotrophic was tested by synthesizing reported estimates of the relationships between the net community production or commun...
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...
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 ...
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...
Annual primary production: Patterns and mechanisms of change in a nutrient-rich tidal ecosystem
Annual primary production Patterns and mechanisms of change nutrient-rich tidal ecosystem
2014/5/27
Although nutrient supply often underlies long-term changes in aquatic primary production, other regulatory processes can be important. The Sacramento-San Joaquin River Delta, a complex of tidal waterw...
Maximum rates of N2 fixation and primary production are out of phase in a developing cyanobacterial bloom in the Baltic Sea
N2 fixation primary production in a developing cyanobacterial bloom Baltic Sea
2014/5/26
Although N2-fixing cyanobacteria contribute significantly to oceanic sequestration of atmospheric CO2, little is known about how N2 fixation and carbon fixation (primary production) interact in natura...
Mesozooplankton grazing impact on primary production: A global comparative analysis in marine ecosystems
Mesozooplankton grazing primary production A global comparative analysis marine ecosystems
2014/6/10
A comparative analysis of the importance of mesozooplankton (200-20,000 μm) as grazers of the phytoplanktonic primary production (PP) across a wide spectrum of marine ecosystems revealed mesozooplankt...