搜索结果: 61-75 共查到“理学 ecosystems”相关记录126条 . 查询时间(0.028 秒)
Status of coastal ecosystems through geospatial techniques for degraded coast of Gulf of Mannar
Tuticorin coastal zone coastal zone mapping Gulf of Mannar
2014/11/26
This region is defined here as Tuticorin Coast, India, and their outlying islands. Tuticorin
Coast climate is strongly influenced by the surrounding sea water. Key climatic features
include tropic...
Climatic balance on coastal ecosystems in Gulf of Mannar: Geoclimatic techniques
Climatology Tuticorin coastal zone coastal ecosystem Geoclimatic techniques
2014/11/25
This region is defined here as Tuticorin Coast, India, and their outlying islands. Tuticorin
Coast climate is strongly influenced by the surrounding sea water. Key climatic features
include tropic...
Confirmed: 800 meters beneath Antarctic ice sheet, subglacial lake holds viable microbial ecosystems（图）
The microbial ecosystem ice sheet
2014/8/26
B-roll from the WISSARD project is available by contacting Dena Headlee, dheadlee@nsf.gov / (703) 292-7739.
In a finding that has implications for life in other extreme environments, both on Earth an...
The roles of productivity and ecosystem size in determining food chain length in tropical terrestrial ecosystems
ecosystem size food chain length food web structure islands
2015/11/13
Many different drivers, including productivity, ecosystem size, and disturbance,
have been considered to explain natural variation in the length of food chains. Much remains
unknown about the role o...
江西师范大学生态学课件5.1 General introduction to ecosystems
江西师范大学 生态学 课件 General introduction to ecosystems
2013/7/15
江西师范大学生态学课件5.1 General introduction to ecosystems。
From wing to wing: the persistence of long ecological interaction chains in less-disturbed ecosystems
wing ecological interaction chains
2015/11/13
Human impact on biodiversity usually is measured by reduction in species abundance or richness. Just as
important, but much more difficult to discern, is the anthropogenic elimination of ecological i...
Meiofauna enhances organic matter mineralization in soft sediment ecosystems
soft sediment ecosystems Meiofauna enhances
2014/4/4
We investigated the influence of meiofauna on the benthic decomposition of a radiolabeled diatom bloom by
measuring the production of 14
CO2
in a laboratory microcosm. Mineralization of the diatom ...
DESERT ECOSYSTEMS: MAPPING, MONITORING & ASSESSMENT USING SATELLITE REMOTE SENSING
Desertification ecosystem UNCCD frost-heaving cold desert
2014/5/6
Desert ecosystems are unique but fragile ecosystems , mostly vulnerable to a variety of degradational processes like water erosion, vegetal degradation, salinity, wind erosion , water logging etc. Som...
Reconstructing the various facets of dissolved organic carbon bioavailability in freshwater ecosystems
Reconstructing freshwater ecosystems
2014/4/4
We explored various aspects of freshwater dissolved organic carbon (DOC) lability by comparing short-term
(, 2 d) bacterial C consumption (STCC; derived from bacterial respiration measurements) with ...
Too Much of a Good Thing: Human Activities Overload Ecosystems with Nitrogen（图）
a Good Thing Human Activities Overload Ecosystems Nitrogen
2010/10/13
Humans are overloading ecosystems with nitrogen through the burning of fossil fuels and an increase in nitrogen-producing industrial and agricultural activities, according to a new study. While nitrog...
Large clean mesocosms and simulated dust deposition: a new methodology to investigate responses of marine oligotrophic ecosystems to atmospheric inputs
marine oligotrophic ecosystems atmospheric inputs Large clean mesocosms
2011/11/14
Intense Saharan dust deposition occurs over large oligotrophic areas in the Mediterranean Sea and in the Tropical Atlantic, and its impact on the biogeochemical functioning of such oligotrophic ecosys...
Implications of warming temperatures for population outbreaks of a nonindigenous species (Membranipora membranacea, Bryozoa) in rocky subtidal ecosystems
Implications of warming temperatures population outbreaks of a nonindigenous species Membranipora membranacea, Bryozoa rocky subtidal ecosystems
2014/4/17
To quantify and explore the role of temperature on population outbreaks of a nonindigenous bryozoan (Membranipora membranacea) in kelp beds in the western North Atlantic (Nova Scotia, Canada), we cons...
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...
Fluorescence spectroscopy opens new windows into dissolved organic matter dynamics in freshwater ecosystems: A review
dissolved organic matter dynamics A review
2014/4/17
The biochemical composition of dissolved organic matter (DOM) strongly influences its biogeochemical role in
freshwater ecosystems, yet DOM composition measurements are not routinely incorporated int...
Unraveling the role of land use and microbial activity in shaping dissolved organic matter characteristics in stream ecosystems
role of land use microbial activity in shaping dissolved organic matter in stream ecosystems
2014/4/17
Surface water samples were collected from 43 streams distributed throughout watersheds of mixed land use in southern Ontario, Canada. Absorbance and fluorescence spectroscopy with parallel factor anal...