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Tag: "imagery" at biology news

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...eviously assumed. The study is based on satellite imagery of Mexico's Gulf of California, also known as the Sea of Cortez-a narrow, 700-mile-long stretch of the Pacific Ocean that separates the Mexican mainland from the Baja California Peninsula. The area is a hotspot of marine biodiversity and one of Mexic...

Finding hidden invaders in a Hawaiian rain forest

...rica invasion is in its early stages. The aircraft imagery also showed us how the forest canopy chemistry is changing as a result of the invader." The study is published in the March 7-11, 2005, early online edition of the Proceedings of the National Academy of Sciences. The new methods are exciting because...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

...rn with the most comprehensive and best-resolution imagery under the ice, in the water column and at the seaf...me," says scientist Dr. Russ Hopcroft of UAF. "The imagery obtained of the mid-water and seafloor shows many life forms, such as soft bodied zooplankton, deep ...

MERIS monitoring tracks planetary photosynthesis levels

...maging Spectrometer (MERIS) acquires multispectral imagery of the Earth, and is used to monitor the state and evolution of the planetary vegetation cover. In particular the instrument's standard Level-2 product on land, known as the MERIS Global Vegetation Index (MGVI) provides FAPAR values based on reflecte...

Carnegie Mellon cyLab researchers work to develop new red tide monitoring

...ny algorithm for the harmful algae. Evaluating the imagery is very time-consuming." Stumpf said he is collaborating with Carnegie Mellon researchers to devise a way to simply convert harmful algae data into an image field that can be easily accessed to map out the deadly algae's location and where it may tr...

Researchers find how some antibiotics kill bacteria

.... But the new study used recent advances in X-ray imagery to obtain the highest resolution figures ever available of how rifamycins bind to their targets. With these new images, the researchers found ?for the first time - that these drugs remove a key component of the bacteria they attack. The researchers w...

NASA satellite data provides rapid analysis of Amazon deforestation

...ation of individual images. While high resolution imagery is still needed when estimating the total area of deforestation or when identifying small clearings, "the most exciting finding of this study is that it shows MODIS can permit regional analyses of land cover in a matter of days, a substantial reducti...

NRL scientists detect 'milky sea' phenomena

... it encountered the milky sea. Enhancement of OLS imagery collected roughly 30 minutes after the ship's report of initial sighting revealed a massive region of low-level light emission. The glowing waters spanned an area roughly the size of Connecticut (over 15000 km^2) and lasted at least three nights. Th...

Envisat radar surveillance protects endangered prehistoric fish

...urveillance system based on Envisat and Radarsat-1 imagery has cut the number of illegal fishing incursions i...t to that of the surrounding water. Envisat ASAR imagery is therefore being utilised for ship detection in a growing number of activities worldwide, includin...

Sahara's edge studied from ground, air and space to improve water management

... on the ground and in the air, to be compared with imagery of the same region acquired by ESA satellites. The...-resolution radar as well as hyperspectral optical imagery was acquired during flights across two test areas in southern Tunisia. Meanwhile ground teams precis...

Iron critical to ocean productivity, carbon uptake

...lant Pathology. Unfortunately, he added, satellite imagery could not readily distinguish that difference. "I... the scientists believe they now can use satellite imagery to identify specific areas that are iron-stressed ?and how they respond to changes such as the sudde...

Carnegie Mellon researchers discover key deficiencies in brains of people with autism

...e was true or false. The sentences either had high imagery content ("The number eight when rotated 90 degrees looks like a pair of eyeglasses") or low imagery content ("Addition, subtraction and multiplication are all math skills.") The findings confirmed ...

African wetland managers armed with new technology

... has been addressing this issue by using satellite imagery to provide detailed wide-area views of individual wetlands to aid national and local conservation efforts. Because the success of wetland conservation ultimately comes down to individual wetland managers, the GlobWetland products and services are us...

Biotech cotton provides same yield with fewer pesticides

...al Information Systems (GIS) and LANDSAT satellite imagery to map the fields and evaluate plant growth in the non-cultivated areas. Plant growth can affect the biodiversity of insects found in an area. The researchers found that, per pesticide application, Bt cotton produced 9 percent more cotton/acre than...

NASA study: Alaskan fires affected Houston air quality in 2004

... In the new study, Morris and colleagues relied on imagery from NASA's Moderate Resolution Imaging Spectroradiometer on the Terra satellite, aerosol data from the Total Ozone Mapping Spectrometer satellite, and carbon monoxide data from the Atmospheric Infrared Sounder on the Aqua spacecraft. They tracked an...

Shrinking ponds signal warmer, dryer Alaska

...ts kind analysis of fifty years of remotely sensed imagery from the 1950s to 2002 shows a dramatic reduction in the size and number of more than 10,000 ponds in Alaska. The analysis, by University of Alaska Fairbanks scientists and published this week in the Journal of Geophysical Research, indicates that th...

NASA satellite data helps assess the health of Florida's coral reef

...cularly important to the health of reefs. "MODIS imagery is beneficial because it provides more detail than traditional satellites, allowing us to detect conditions down to hundreds of meters - the size of individual reefs," said Christopher Moses, University of South Florida, Tampa, Fla. Researchers als...

Preliminary study finds holographic imaging system promising for cancer treatment planning

..."PerspectaRAD" Spatial 3D system generates true 3D imagery with a full 360-degree field of view. Using high-speed electronics, a CT scan is projected onto a screen spinning inside a 24-inch transparent dome. The screen, spinning at over 900 rotations per minute, forms a detailed, holographic image that can ...

Computer with brain connections changing quality of life of paralyzed

...ol). In a CLIS situation, intentional thoughts and imagery can rarely be acted upon physically and, therefore, are rarely followed by a stimulus. The research suggests that as the disease progresses and the probability for an external event to function as a link between response and consequence becomes progr...

CSIRO imagery shows Outer Great Barrier Reef at risk from river plumes

A stunning series of satellite imagery of Australia's Great Barrier Reef released by the CSIRO shows for the first time visual confirmation of the theory that sediment plumes travel to the outer reef, and beyond. The remotely sensed images, taken from February 9 to 13 this year, challe...

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