Tag: "northern" at biology news
Mosquito spray increases toxicity of pyrethroids in creek, study finds
.... Sediment and water samples were taken from the northern
creeks on Aug. 12, about 34 hours after the third night's application of the pesticide. In the southern creeks, samples were collected on Aug. 14, six days before the first application, and Aug. 22, about 10 hours after the second night's application...
Elephants avoid costly mountaineering
...ocused on the Samburu/Isiolo/Laikipia districts in northern
Kenya, which represent an area of about 32,000 square kilometers of mostly unprotected habitat. This range is home to about 5,400 elephants. In the course of studying the influences of a range of environmental factors on elephant movement, the aut...
Energy-rich portfolio of new genome sequencing targets for DOE JGI
...st economically devastating forest pathogen in the northern
hemisphere, causing root rot in conifers, a major renewable biological energy resource. These forests support biodiversity and serve as an important CO2 sink buffering global climate change. Improved knowledge of this tree pathogen will help build st...
Jellyfish dominate fish in over-harvested Namibian waters
...f Angola and South Africa, in an area known as the northern
Benguela. In the past, this region has offered abu... now account for significantly more biomass in the northern
Benguela waters than do fish. Based on the data they obtained--by using scientific echosounders and ...
Ancient raindrops reveal the origins of California's Sierra Nevada range
...on years. "An elevation profile drawn across the northern
Sierra Nevada 40 to 50 million years ago would not look much different than today's profile," said Graham, the Welton Joseph and Maud L'Anphere Crook Professor of Applied Earth Science at Stanford. "Those mountains probably have persisted since the...
More large forest fires linked to climate change
...e most pronounced for mid-elevation forests in the northern
Rocky Mountains. The new finding points to climate change, not fire suppression policies and forest fuel accumulation, as the primary driver of recent increases in large forest fires. "I see this as one of the first big indicators of climate c...
Studies show that rockfish thrive with offshore platforms as their home base
...t of North America and was abundant from Oregon to northern
Baja California. Overfishing has reduced the stock to less than one-tenth of its former population, according to Milton S. Love, a marine biologist with UCSB's Marine Science Institute (MSI). However, the platforms are helping to restore this species...
Creating a window on 'oceans in motion'
...Prince William Sound to track salmon sharks in the northern
Gulf of Alaska region. And he says partners to track marine animals and the state of ocean conditions have been identified on all continents. The OTN plans a highly interconnected network that spans 14 ocean regions: The Arctic and Southern Oceans, t...
MIT warns of dumping seafood
...ly released by seafood handlers and consumers. The northern
snakehead fish and the Chinese mitten crab are two...legal to possess in the United States, such as the northern
snakehead, walking catfish and Chinese mitten crab....
New study finds multiple invasions increase green crab's Canadian range
...found that it was the injection of new lineages in northern
Nova Scotia that was responsible for the crab's su...NA used to track this invasion suggests that these northern
crabs constitute a new invasion front, which may have arrived in the waters around the Strait of Can...
Global patterns of geographic range sizes: A bird's eye view
...l extent was defined as the difference between the northern
and southern limits of the vector maps for each br...he highest variation in range size is found in the northern
hemisphere, particularly around the mid-latitudes. The pattern for latitudinal range size was also b...
First global bird map provides new clues to future extinctions
...titudinal basis, declining from the largest in the northern
hemisphere to the smallest in the southern. The te...e found that the patterns seen in the well-studied northern
regions can't be assumed to apply to the rest of the world - a global perspective is needed. This me...
Thawing soil in permafrost a significant source of carbon
...s of carbon release similar to those of productive northern
grassland soils. "If these rates continue as field observations suggest, most carbon in recently thawed yedoma will be released within a century - a striking contrast to the preservation of carbon for tens of thousands of years when frozen in permafr...
WWF captures first-ever photo of wild rhino on Borneo
...s found only in Sumatra (Indonesia), Sabah (on the northern
end of Borneo) and Peninsular Malaysia. On Borneo, there have been no confirmed reports of the species apart from those in Sabah for almost 20 years, leading experts to fear that rhinos may now be extinct on the rest of the island. The main threats ...
Pollen proves beneficial for northern lakes
... can represent a substantial pulse of nutrients to northern
lakes. Graham's research team found that plankton...able between terrestrial and aquatic ecosystems in northern
environments." By increasing the availability of plankton, an important food resource for forage fis...
Recent, rapid climate change is driving evolution of animal species
.... Global warming is proceeding fastest at the most northern
latitudes, resulting in longer growing seasons whi...ss without imposing summer heat stress. In short, northern
climates are becoming more like those in the south. "Over the past 40 years, animal species have bee...
Sensational find: The mini-dinosaurs from the Harz Mountains
...all dinosaur fossils were found in a quarry on the northern
edge of the Harz Mountains in 1998, it was initial...dinosaur in the Langenberg quarry near Oker on the northern
edge of the Harz Mountains in North Germany. The animal was provisionally christened 'Hanna', with L...
Discovery may speed forest biotechnology
...opulations, and found that trees adapted to colder northern
climates shut down growth earlier in the summer to prepare for long, harsh winters. The genetic mechanisms that adapt trees to these conditions and control it are so strong that trees will behave about the same even if they are transplanted to warmer...
Study outlines eruption at undersea volcano
...eafloor. On another volcano called Daikoku, in the northern
part of the Mariana volcanic arc, the researchers discovered a pool of molten sulfur at a depth of 420 meters. It was measured at 187 degrees Celsius. "It was a sulfur pond with a flexible 'crust' that was moving in a wavelike motion," Chadwick said....
Using satellite observations to study photosynthetic trends in northern circumpolar high latitudes
...2-year record of satellite observations across the northern
circumpolar high latitudes, scientists at the Woods Hole Research Center are assessing trends in vegetation photosynthetic activity. The results indicate that tundra areas consistently and predominantly show greening trends while forested areas show ...
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