搜索结果: 1-15 共查到“海洋地球物理学 lakes”相关记录31条 . 查询时间(0.133 秒)
Widespread variability in overnight patterns of ecosystem respiration linked to gradients in dissolved organic matter, residence time, and productivity in a global set of lakes
The ecological system lakes
2014/10/16
Widespread variability in overnight patterns of ecosystem respiration linked to gradients in dissolved organic matter, residence time, and productivity in a global set of lakes。
Research shows declining levels of acidity in Sierra Nevada lakes
Sierra Nevada lakes declining levels
2014/9/12
RIVERSIDE, Calif. — California’s water supply depends on a clean snow pack and healthy mountain lakes. The lakes receive a large amount of runoff in the spring from the melting snowpack. If the snow...
The regional abundance and size distribution of lakes and reservoirs in the United States and implications for estimates of global lake extent
The regional abundance size distribution lakes reservoirs the United States implications estimates of global lake extent
2014/4/2
We analyzed complete geospatial data for the 3.5 million lakes and reservoirs larger than 0.001 km2, with a combined surface area of 131,000 km2, in the contiguous United States (excluding the Laurent...
RIPPLE MARKS—THE STORY BEHIND THE STORY | Canyon "Ghost" Critical to Stream Ecosystems: Cougars Act as Guardians of Fish, Frogs • "Wavelet" Math Translates Whale Song into Art • Fire in the Sky, Smoke in the Water: Queen of American Lakes Under Siege from Fireworks Displays? • Jellyfish "Blooms" Signal Ailing Seas Ahead: Jellywatchers Help Scientists Track Locations
Ghost cat cat puma tupi predators habitat
2015/7/7
The ghost cat, it's been called, this feline that roams backcountry from the Yukon to Chile. It has dozens of names, from panther, to puma, to mountain lion. But its best descriptor, perhaps, is couga...
Optical closure in lakes with contrasting extremes of reflectance
Optical closure contrasting extremes
2014/4/21
We measured inherent and apparent optical properties and computed ‘optical closure’ in four lakes on the South
Island of New Zealand, ranging very widely in reflectance. Optical properties were measu...
Aging of allochthonous organic carbon regulates bacterial production in unproductive boreal lakes
allochthonous organic carbo production in unproductive
2014/4/18
We calculated average aquatic dissolved organic carbon (DOC) age (the time span from soil discharge to
observation) in water from the inlets and outlets of two unproductive Swedish lakes at different...
Microbially induced flocculation of allochthonous dissolved organic carbon in lakes
Microbially induced allochthonous dissolved organic carbon
2014/4/17
The flocculation of allochthonous dissolved organic carbon (DOC) in lakes was investigated in a series of
laboratory experiments. Flocculation was enhanced by increased temperatures, and addition of ...
Zinc isotope composition of settling particles as a proxy for biogeochemical processes in lakes: Insights from the eutrophic Lake Greifen, Switzerland
Zinc isotope composition a proxy for biogeochemical processes
2014/4/17
The isotope composition of zinc (Zn) was determined in settling particles collected monthly over a year in the
hypolimnion of the eutrophic Lake Greifen (Switzerland) in order to explore the potentia...
Ecological, landscape, and climatic regulation of sediment geochemistry in North American sockeye salmon nursery lakes: Insights for paleoecological salmon investigations
sediment geochemistry Ecological landscape climatic
2014/4/17
We used multiple linear regressions across a Northeast Pacific region 56-lake set to examine the influence of
sockeye salmon spawner densities and limnological, climatic, and watershed characteristic...
Frequent regime shifts in trophic states in shallow lakes on the Boreal Plain: Alternative ‘‘unstable’’ states?
trophic states shallow lakes
2014/4/22
Shallow lakes are known to exhibit alternative states in their biotic structure. Lakes dominated by submersed
aquatic vegetation (SAV) are ‘‘clear,’’ while lakes dominated by algae (high concentratio...
Spatial analysis of ice phenology trends across the Laurentian Great Lakes region during a recent warming period
ice phenology trends the Laurentian Great Lakes
2014/4/22
We examined spatial patterns of trends in ice phenology and duration for 65 waterbodies across the Great
Lakes region (Minnesota, Wisconsin, Michigan, Ontario, and New York) during a recent period of...
Discontinuities in stream nutrient uptake below lakes in mountain drainage networks
stream nutrient uptake Discontinuities
2014/4/22
In many watersheds, lakes and streams are hydrologically linked in spatial patterns that influence material
transport and retention. We hypothesized that lakes affect stream nutrient cycling via modi...
Experimental d13 C evidence for a contribution of methane to pelagic food webs in lakes
methane to pelagic food webs Experimental
2014/5/5
We tested the hypothesis that low stable carbon isotope (d13
C) values commonly observed for zooplankton in
humic lakes are due to their feeding on isotopically light methane-oxidizing microbes, and...
Major contribution from littoral crustaceans to zooplankton species richness in lakes
littoral crustaceans zooplankton species
2014/5/5
A study of pelagic and littoral species richness among microcrustaceans in 2,466 Norwegian lakes recorded 120
crustacean species: 77 cladocerans, 31 cyclopoids, and 12 calanoids, respectively. Very f...
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...