搜索结果: 1-15 共查到“海洋地质学 nutrient”相关记录18条 . 查询时间(0.062 秒)
Interannual and Subdecadal Variability in the Nutrient Geochemistry of the Cariaco Basin
Interannual and Subdecadal Variability Nutrient Geochemistry Cariaco Basin
2015/7/17
The CARIACO Ocean Time Series program has made monthly measurements of oxygen, nutrients, and carbon system parameters (∑CO2, alkalinity, pH) in the Cariaco Basin since 1996. At the same time, sedimen...
Patterns and Controls of Nutrient Concentrations in a Southeastern United States Tidal Creek
Nutrient Concentrations Southeastern United States
2015/7/16
Terrestrial inputs largely govern nutrient delivery to the coastal ocean, and subsequent processes transform these nutrients in the land-ocean transition zone. Here, we describe spatial and temporal p...
Mats of the nonnative macroalga, Gracilaria vermiculophylla, alter net denitrification rates and nutrient fluxes on intertidal mudflats
nonnative macroalga Gracilaria vermiculophylla
2013/4/2
We hypothesized that mats of a nonnative macroalga, Gracilaria vermiculophylla, which is often found
incorporated several centimeters into intertidal mudflat sediments, would increase net denitrifica...
Carbon cycling within epilithic biofilm communities across a nutrient gradient of headwater streams
Carbon cycling within epilithic biofilm communities across a nutrient gradient headwater streams
2010/4/17
Primary production (PP), nutrient uptake, and carbon (C) cycling within epilithic biofilm communities were assessed in four headwater streams in the Arkansas Ozarks, U.S.A., representing a hundred-fol...
Local-scale nutrient regeneration facilitates seaweed growth on wave-exposed rocky shores in an upwelling system
egeneration facilitates seaweed Local-scale nutrient
2009/4/17
This study shows that, even on exposed, wave-swept, rocky shores in a nutrient-replete upwelling ecosystem,
mussels (Mytilus californianus) facilitate the growth of the seaweed Porphyra perforata by ...
An empirical evaluation of the nutrient-color paradigm for lakes
empirical evaluation nutrient-color paradigm lakes
2008/4/21
We analyzed a diverse set of 1,646 north-temperate lakes to evaluate the nutrient-color paradigm that integrates total phosphorus (TP) and colored dissolved organic carbon to define laketrophic status...
A photosynthetic strategy for coping in a high-light, low-nutrient environment
A photosynthetic strategy in a high-light low-nutrient environment
2008/4/21
Phytoplankton in high-light, low-nutrient ocean environments are challenged with maintaining high photosynthetic efficiency and simultaneously preventing photodamage that results from low levels of el...
Submarine discharge of nutrient-enriched fresh groundwater at Stinson Beach, California is enhanced during neap tides
Submarine discharge nutrient-enriched fresh groundwater Stinson Beach California enhanced during neap tides
2008/4/18
The influence of fortnightly spring–neap tidal variability on submarinedischarge of fresh and saline groundwater was examined at Stinson Beach, California. Stinson Beach is aresidential community that...
Freshwater input structures soil properties, vertical accretion, and nutrient accumulation of Georgia and U.S tidal marshes
Freshwater input structures soil properties vertical accretion nutrient accumulation Georgia U.S tidal marshes
2007/4/22
To identify relationships between freshwater input and marsh soil properties, measurements of bulk density, nutrients (carbon [C], nitrogen [N], phosphorus [P]), accretion, and accumulation were compa...
The importance of submarine groundwater discharge to the near shore nutrient supply in the Gulf of Aqaba (Israel)
submarine groundwater discharge near shore nutrient supply the Gulf of Aqaba
2006/5/4
We used two short-lived radium isotopes (223Ra, 224Ra) and a mass balance approach applied to the radium activities to determine the nutrient contribution of saline submarine groundwater discharge to ...
A comparative study of responses in planktonic food web structure and function in contrasting European coastal waters exposed to experimental nutrient addition
planktonic food web contrasting European coastal waters
2006/4/30
We quantify, compare, and generalize responses of experimental nutrient loadings (LN
) on planktonic community
structure and function in coastal waters. Data were derived from three mesocosm experim...
Nutrient excretion by fish in wetland ecosystems and its potential to support algal production
Nutrient excretion support algal production
2006/4/23
We used both direct measurement and bioenergetic methods to examine nitrogen and phosphorus (P) excretion
by fathead minnows in two wetlands over 2 yr. We also assessed the potential importance of nu...
Influence of zooplankton stoichiometry on nutrient sedimentation in a lake system
zooplankton stoichiometry nutrient sedimentation a lake system
2005/5/9
We explored rates and stoichiometry (C:N: P ratios) of sinking particles in a temperate reservoir during a 2-yr period. Plankton was sampled weekly, and a sediment trap placed below the metalimnion co...
The influence of substratum type and nutrient supply on biofilm organic matter utilization in streams
substratum type nutrient supply
2004/5/19
We investigated the effect of benthic substratum type (sand and rocks) and nutrient supply (N and P) on biofilm
structure and heterotrophic metabolism in a field experiment in a forested ...
Phytoplankton nutrient competition under dynamic light regimes
Phytoplankton nutrient competition dynamic light regimes
2004/5/16
Many physiological processes in phytoplankton, including nutrient uptake, vary on a number of temporal scales.
Experiments show that the daily cycle in irradiance affects nutrient uptake rates. We us...