'This is a whole new approach to plant nutrition says Dr Peter Leggo of the Department of Earth sciences who developed the material.
and Hydrology (CEH) University of East Anglia University of Bristol and Institute of Zoology instead took advantage of bumblebees'unusual genetics.
and operated by the U s. Geological Survey help direct the crews to those forest areas needing attention.
and topographical maps that identify steep slopes and watersheds. After the Silver Fire for example they identified severely burned areas upstream of a community campgrounds and forest roads.
Chong-Xi Yuan from the Chinese Academy of Geological Sciences in Beijing China along with Chinese and American colleagues report their analysis of the fossil in the 16 august issue of Science.
The multituberculates flourished during the Cretaceous era which ended over 60 million years ago. Much like today's rodents they filled an extremely wide variety of niches--below the ground on the ground and in the trees--and this new fossil
The later multituberculates of the Cretaceous era and the Paleocene epoch are extremely functionally diverse: Some could jump some could burrow others could climb trees
Multituberculates arose in the Jurassic period and went extinct in the Oligocene epoch occupying a diverse range of habitats for more than 100 million years before they were competed out by more modern rodents.
By the end of their run on the planet multituberculates had evolved complex teeth that allowed them to enjoy vegetarian diets
The discovery of R. eurasiaticus also extends the distribution of certain multituberculates from Europe to Asia during the Late Jurassic period the researchers say.
and other human activities according to a study led by scientists at the Scripps Institution of Oceanography (SIO).
Baines is now working with volcanologists in Britain to apply his model to historic eruptions like the Campanian event
The project uses data from Landsat satellites a mission jointly operated by NASA and the U s. Geological Survey.
Because of the state's geographic location and climate California is considered particularly vulnerable to introduction and establishment of tropical fruit-fly populations.
James B. Shanley U s. Geological Survey; Corinna Gries University of Wisconsin; Donald L. Henshaw U s. Forest Service;
and the impact of ozone depletion on surface climate and the hydrological cycle was recognized not at all.
Today rising carbon dioxide levels are already disturbing earth's hydrological cycle making dry areas drier and wet areas wetter.
But in computer models simulating a world of continued CFC use the researchers found that the hydrological changes in the decade ahead 2020-2029 would have been twice as severe as they are expected now to be.
and a simplification of their cultural traditions and their relationship with wildlife a team of researchers led by a University of Colorado Boulder geographer has concluded.
and we had a lot of ethnographic background to correct that said Mara J. Goldman the assistant professor of geography at CU-Boulder who led the study.
and Jennifer Perry a CU-Boulder geography alumna now studying law at the university. Goldman and her fellow researchers conducted 246 in depth interviews of Tanzanian and Kenyan Maasai between 2004 and 2008.
Scripps Institution of Oceanography UC San diego paleobiologist Richard Norris and colleagues show that the ancient greenhouse world had few large reefs a poorly oxygenated ocean tropical surface waters
when algae became large enough to support top predators in the cold oceans of recent geologic times.
One well-studied event is known as the Paleocene-Eocene Thermal Maximum (PETM) 56 million years ago
Co-authors of the review are Sandra Kirtland-Turner of Scripps Oceanography Pincelli Hull of Yale university and Andy Ridgwell of the University of Bristol in the United kingdom. Story Source:
or geographic adaptations to survive. Although some of the changes the planet will experience in the next few decades are baked already into the system how different the climate looks at the end of the 21st century will depend largely on how humans respond.
The geologic record shows that 20000 years ago as the ice sheet that covered much of North america receded northward plants
There are two key differences for ecosystems in the coming decades compared with the geologic past Diffenbaugh said.
Our results show that current-use pesticides particularly fungicides are accumulating in the bodies of Pacific chorus frogs in the Sierra nevada said Kelly Smalling a research hydrologist from the U s. Geological Survey.
Both palm species are in the Arecaceae family of flowering plants which fossil evidence dates to the Cretaceous period an estimated 140 to 200 million years ago.
It will also inform our understanding of how carbon storage can be used to assess other fundamental ecosystem characteristics such as hydrology habitat quality and biodiversity.
and we are focusing on periods of climate fluctuation during the Holocene. We're trying to figure out what happened in the past to help us to project what may happen in the future.
The Holocene epoch began about 11700 years ago and continues to the present. The team paid close attention to a particularly warm period in the Holocene.
This period called the Medieval Climate Anomaly (MCA) occurred about 1000 to 500 years ago.
The Yukon Flats region appears to be undergoing a transition that is unprecedented in the Holocene epoch Hu said.
He is the lead author of a paper documenting the work published in the September edition of Geology.
This work was an international collaboration between the School of Geography and Environmental Studies at the University of Tasmania in Hobart Australia;
The study is based on data from the Alien Forest Pest Explorer a web tool that gives users a county-by-county look at geographical distributions of damaging forest invasive pests throughout the nation.
the Bigelow Laboratory for Ocean Sciences University of British columbia the University of Nevada Las vegas the University of Western Greece Woods Hole Oceanographic Institution University of Illinois at Urbana-Champaign
University and the U s. Geological Survey. The publication assesses the effects of temperature and precipitation change on lesser prairie-chicken reproduction on the Southern High Plains.
The above story is provided based on materials by U s. Geological Survey. Note: Materials may be edited for content and length.
Lance Mcnew 2010 doctoral graduate in biology and research wildlife biologist with the U s. Geological Survey at the Alaska Science Center;
and how many flowers they produce is one vital sign of their health said Pau an assistant professor in Florida State's Department of Geography.
U s. Geological Survey Senior Scientist Julio Betancourt who was involved not in the study described Pau's research as clever.
and how they lived says Cerling a distinguished professor of geology and geophysics and biology at the University of Utah.
Cerling and Uno conducted it with geologist Jay Quade a former Utah doctoral student now at the University of Arizona;
The researchers tested the accuracy of carbon-14 dating in 29 animal and plant tissues killed and collected on known dates from 1905 to 2008.
Many climate models do not reflect the strong ENSO response to global warming that we found says co-author Shang-Ping Xie meteorology professor at the International Pacific Research center University of Hawaii at Manoa
and Roger Revelle Professor at Scripps Institution of Oceanography University of California at San diego. This suggests that many models underestimate the sensitivity to radiative perturbations in greenhouse gases.
Quantifying uncertainties is an important step to build confidence in future yield forecasts produced by crop models said Basso with MSU's geological sciences department and Kellogg Biological Station.
but mystery does remain says Cerling a distinguished professor of geology and geophysics and biology.
which occupy closed wooded habitats writes University of South Florida geologist Jonathan Wynn chief author of one of the new studies and a former University of Utah master's student.
Cerling wrote the study about teeth from the Turkana Basin in Kenya where the research team is led by Turkana Basin Institute paleoanthropologist Meave Leakey Cerling and geologist Frank Brown dean of mines and Earth sciences
& Diversit Biologique (EDB) Toulouse and from the US Geological Survey Anchorage to study the cloacal bacterial assemblies of black-legged kittiwakes (Rissa tridactyla).
When intense volcanic activity produced huge quantities of carbon dioxide 120 million years ago in the mid-Cretaceous period yearly temperatures in the South American tropics rose 9
F (5 C). During the Paleocene-Eocene thermal maximum 55 million years ago tropical temperatures rose by 5 F (3 C) in less than 10000 years.
and summarizes the influence of these geographic factors on long-term population persistence. The current study applied this metric to 127 forest-dependent passerine birds inhabiting the Atlantic Forest of Brazil an area that has lost over 90 percent of its original forest.
a time-scale that is used in archaeology geology and other sciences to date events in the past. Since'the present'is constantly changing international consensus was reached on making 1 january 1950 or the calendar year 1950 the point of reference (source:
This scarcity contrasts with its abundance in the fossil record of the late Pleistocene and Holocene says Dr Marã a Napal leading author of thepaper published in Forest Ecology and Management.
The fossil record shows that the start and consolidation of its decline coincided with the deforestation caused by the intensification of agriculture
In factduring the Holocene the vegetation evolved differently in the Mediterranean compared with the rest of Europe.
or distort the apparent relationship between the distribution of the species and eco-geographical factors.
On the other hand reforestation of existing grassland with teak (under sustainable forest management) would generate gains sufficient to offset the hydrological losses in all converted areas regardless of the value of carbon.
Hanging Around in the Jurassic Juracimbrophlebia ginkgofolia Country: Chinahangingfly fossil: Living species of hangingflies can be found as the name suggests hanging beneath foliage where they capture other insects as food.
along with leaves of a gingko-like tree Yimaia capituliformis in Middle Jurassic deposits in the Jiulongshan Formation in China's Inner Mongolia.
and geographic footprint has come under great pressure regarding its social and environmental impact. In response companies have started to take account of their products'greenhouse-gas contributions in part by measuring the amount of carbon dioxide associated with every process throughout a product's lifecycle.
because both temperature and day length are relatively constant all year round due to geographical proximity to the equator.
The scientists then combined their genetic results with the meteorological data of the region. Kobayashi concludes that Flowering in Shorea beccariana is triggered by a four-week drought in combination with elevated sucrose levels.
Authored by research meteorologists Yongqiang Liu and Scott Goodrick from the Forest Service Southern Research Station (SRS) and Warren Heilman from the Northern Research Station the article homes in on the effect
Fire climate sets atmospheric conditions for fire activity in longer time frames and larger geographic scales.
John Isbell is on a quest to coax that information from the geology of the southernmost portions of the Earth.
An expert in glaciation from the late Paleozoic era Isbell is challenging many assumptions about the way drastic climate change naturally unfolds.
Starting from'deep freeze'In the late Paleozoic the modern continents were fused together into two huge land masses with
One of his colleagues is paleoecologist Erik Gulbranson who studies plant communities from the tail end of the Paleozoic
Documenting the particulars of how the carbon cycle behaved so long ago will allow them to answer questions like'What was the main force behind glaciation during the late Paleozoic?
'Another characteristic of the late Paleozoic shift is that once the climate warmed significantly and atmospheric CO2 levels soared the Earth's climate remained hot and dry for another 200 million years.
One of the things Gulbranson hypothesizes from his research in Antarctica is that an increase in deciduous trees occurred in higher latitudes during the late Paleozoic driven by higher temperatures.
With UWM backing they will do field work in northeastern Russia this summer to study glacial deposits from the late Paleozoic.
Considering that these populations occur over extremely small geographic ranges it is possible that many tropical forest lizards
The research was the result of a two-year collaboration between Dr Huw Barton from the School of Archaeology and Ancient History at the University of Leicester and Dr Xiaoyan Yang Institute of Geographical Sciences and Natural resources
but that an indigenous system of plant cultivation may have been in place by the mid Holocene.
A case in point is the Cambrian explosion the sudden appearance about 540 million years ago of a remarkable diversity of animal species without apparent predecessors.
A case in point is the Cambrian explosion the sudden appearance about 540 million years ago of a remarkable diversity of animal species without apparent predecessors.
The work was published today in the Journal of Applied Ecology by researchers from Oregon State university Augustana College and the U s. Geological Survey.
#Loss of eastern hemlock will affect forest water usethe loss of eastern hemlock from forests in the Southern Appalachian region of the United states could permanently change the area's hydrologic cycle reports a new study by U s. Forest Service
scientists at the Coweeta Hydrologic Laboratory (Coweeta) located in Otto North carolina published online in the journal Ecological Applications and available now in preprint format.
Changes in local forest hydrology from the loss of eastern hemlock will largely depend on which species replace it.
The study was conducted at the U s. Forest Service Coweeta Hydrologic Laboratory in the Nantahala Mountains of western North carolina.
but in other places it will be grassland says Charles Koven a scientist in Berkeley Lab's Earth sciences Division who conducted the research.
The map is based on the northwards migratory patterns of birds (from the 4th february to the end of April) using environmental and meteorological data over the same 12 weeks--from Zhejiang Shanghai and Jiangsu to Liaoning Jilin and Heilongjiang.
Over the coming year Khoury will analyze the geographic distributions of the plants in the list determine
and geography to large tracts of the Amazon where soybean production largely for export as animal feed is expanding rapidly.
To understand how land use is associated with economic development Vanwey teamed with John Mustard professor of geological sciences at Brown and Stephanie Spera Mustard's graduate student.
Xuchao Zhao now a scientist at the Institute of Geology and Geophysics in Beijing China found his grain in a meteorite picked up in Antarctica by the Chinese Antarctic Research Expedition.
One group included unrelated people from the same geographic neighborhood. This group would share similar physical environments like walkability
biofuel productionhydrogen sulfide the pungent stuff often referred to as sewer gas is a deadly substance implicated in several mass extinctions including one at the end of the Permian period 251 million years ago that wiped out more than three-quarters of all species
when sulfates in the oceans were decomposed by sulfur bacteria is believed to have played a significant role in several extinction events in particular the Great Dying at the end of the Permian period.
This team dubbed Algafuture is composed of undergraduates and graduate students from the departments of Geography and Environmental Engineering and Chemical and Biomolecular engineering.
Their faculty advisers are Edward Bouwer professor and chair of the Department of Geography and Environmental Engineering and Michael Betenbaugh professor in the Department of Chemical and Biomolecular engineering.
The faculty adviser to the student ram pump team is William Ball a professor in the Department of Geography and Environmental Engineering.
In the 1950s scientists tested this correlation using early radiocarbon dating but the large error range left open the validity of GMT.
Amy Townsend-Small a UC assistant professor of geology and geography will present her research Carbon Sequestration
and Greenhouse Gas Emissions in Urban Ecosystems at the Association of American Geographers annual meeting to be held April 9-13 in Los angeles. The interdisciplinary forum is attended by more than 7000 scientists from around the world and features an array
of geography-related presentations workshops and field trips. At the meeting Townsend-Small will discuss the effects lawn-management techniques have on greenhouse gas production in urban landscapes.
Jeffrey Brewer a doctoral student in the University of Cincinnati's Department of Geography will present his findings on April 11 at the Association of American Geographers'annual meeting in Los angeles. Brewer's research titled Hinterland Hydrology:
Brewer's discovery of artificial reservoirs--topographical depressions that were lined with clay to make a watertight basin--addressed how the Maya conserved water from the heavy rainfall from December to spring
The Association of American Geographers (AAG) is a nonprofit scientific and educational society that is dedicated to the advancement of geography.
The annual meeting features more than 6000 presentations posters workshops and field trips by leading scholars experts and researchers in the fields of geography environmental science and sustainability.
#An oceanographer and executive director of the Louisiana Universities Marine Consortium Rabalais spoke at a special symposium organized by 2012 ACS President Bassam Z. Shakhashiri Ph d. Abstracts of other presentations
United states 517-432-4412 rosejo@msu. edulinking advances in genomics research mathematics and earth sciences as well as novel engineering technologies is imperative
and graduate students led by Lhoussaine Bouchaou of the Applied Geology and Geo-Environment Laboratory at Ibn Zohr University.
The U s. Geological Survey is leading the collaborative project with the Chilean government to understand glacier processes within the context of climate change impacts from human activities.
It was authored co by civil engineering postdoctoral researchers Jeryang Park and Heather Gall and by Rao and Dev Niyogi Indiana state climatologist and an associate professor in the Purdue Department of Agronomy and the Department of Earth
by the Virginia Institute of Marine Science and U s. Geological Survey. The little crustacean grazers some resembling tiny shrimp are critical in protecting seagrasses from overgrowth by algae helping keep these aquatic havens healthy for native
The above story is provided based on materials by United states Geological Survey. Note: Materials may be edited for content and length.
and coincided with the abrupt climate change that occurred during the Pliocene epoch. They also found the expansion of the micro-RNA mir2275 family may contribute to Ae.
The result is that we see a change in forest hydrology Green said. We still have to determine
and Technology (ICTA) and involved researchers from the Department of Marine and Oceanographic Biology of the Institute of Marine Sciences of the CSIC from the UAB spin-off Inã dit Innovaciã SL in the UAB Research
Despite G. pallida's limited geographic distribution its presence in U s. soils has had far-reaching impact:
whether this type of intervention can be implemented effectively in varying geographic locations involving various racial distributions
Forest Service scientists collaborated with the U s. Geological Survey and the University of Wisconsin for both studies.
Perhaps more importantly the researchers say that additional studies may help them better understand the origins of nicotine addiction and the human management geographic range extension and cultivation of tobacco.
and on said lead author Daniel Griffin a doctoral candidate in the UA School of Geography and Development.
and associate professor of geography and development said The thing that's interesting about these droughts is that we've reconstructed the winter precipitation
The team looked at annual growth rings from two different species Douglas-fir (Pseudotsuga menziesii) and ponderosa pine (Pinus ponderosa) throughout the weather forecast region called North american Monsoon Region 2 or NAM2.
and tropical ecologists from the UK USA Australia and Brazil and was led by Dr Chris Huntingford from the Centre for Ecology & Hydrology in the UK.
Lead author Dr Chris Huntingford from the Centre for Ecology & Hydrology in the UK said The big surprise in our analysis is that uncertainties in ecological models of the rainforest are significantly larger than uncertainties from differences in climate projections.
and the Centre for Ecology & Hydrology said Building on this study one of the big challenges that remains is to include in Earth system models a full representation of thermal acclimation and adaptation of the rainforest to warming.
& Hydrology (UK) National Center for Atmospheric Research (USA) The Australian National University (Australia) CCST/Inst Nacl Pesquisas Espaciais (INPE)( Brazil) James Cook
The above story is provided based on materials by Centre for Ecology and Hydrology. Note: Materials may be edited for content and length.
Knowledge of the genes underlying the mechanism of early development will allow plant breeders to tailor new potato varieties to various geographic locations.
and relationships of Luetzelburgia and its relatives Cardoso set out to examine herbarium specimens and collect new specimens from across the geographic range of the genera.
Temperature and precipitation were recorded at official long-term weather stations located near each of the nine sites.
and Imaging the De Montfort University team#along with Dr Michael Watts from The british Geological Survey Keyworth Nottingham UK#has identified varieties that are low in arsenic but high in essential trace elements such as
One leading analysis based on genomic data alone predicted that a number of placental mammal lineages existed in the Late Cretaceous
and survived the Cretaceous-Paleogene extinction. It has been suggested that primates diverged from other mammals well before the extinction of the dinosaurs
because most volcanoes are located on island arcs tectonic plate boundaries that don't contain continental crust.
and spanned the late Cretaceous when dinosaurs roamed and the early Paleogene when mammals began to diversify.
Lee and colleagues found that the planet's greenhouse-icehouse oscillations are a natural consequence of plate tectonics.
The research showed that tectonic activity drives an episodic flare-up of volcanoes along continental arcs particularly during periods
Lee professor of Earth science at Rice led the four-year study which was authored co by three Rice faculty members and additional colleagues at the University of Tokyo the University of British columbia the California Institute of technology Texas A&m University and Pomona College.
The standard view of the greenhouse state is that you draw carbon dioxide from the deep Earth interior by a combination of more activity along the mid-ocean ridges--where tectonic plates spread--and massive breakouts of lava called'large igneous
The talk was given by Rice oceanographer and study co-author Jerry Dickens a paleoclimate expert; Lee and Rice geodynamicist Adrian Lenardic another co-author were in the audience.
Jerry was talking about seawater in the Cretaceous and he mentioned that 93.5 million years ago there was a mass extinction of deepwater organisms that coincided with a global marine anoxic event--that is the deep oceans became starved of oxygen Lee said.
Tectonic and petrological evidence indicated that many Etna-like volcanoes existed during the Cretaceous greenhouse Lee said.
There is evidence to support our idea both in the geological record and in geophysical models the latter
Rice co-authors include Dickens and Lenardic both professors of Earth science; Rajdeep Dasgupta assistant professor of Earth science;
Bing Shen postdoctoral research associate; Benjamin Slotnick graduate student; and Kelley Liao a graduate student who began work on the project as undergraduate.
#Preserving biodiversity can be compatible with intensive agriculturepreserving genetically diverse local crops in areas where small-scale farms are rapidly modernizing is possible according to a Penn State geographer who is part of an international research project investigating the biodiversity
and head of the Department of Geography and where small-scale farms are often female-run
Zimmerer designed this data collection and analysis to use with high-resolution satellite imagery and Geographic Information systems.
These techniques enabled him to create geographic models maps and estimates of the areas devoted to intensified peach-and maize-growing.
and the NERC Centre for Ecology & Hydrology has shown that these variations reveal how vulnerable the rainforest is to climate change.
since she was banded first by U s. Geological Survey scientist Chandler Robbins in 1956. Robbins estimated Wisdom to be at least 5 years old at the time
which through the hydrological cycle are interconnected to other ecosystems at local and distant locations being highly sensitive to a broad array of human impacts.
The principal threat to most Amazon freshwater ecosystems is large-scale alteration of the basin's natural hydrology.
These infrastructure projects together with deforestation-induced changes to regional rainfall could fundamentally change the hydrology of Amazon freshwater systems she added.
if uncontrolled such hydrological alterations could disrupt fish migrations and associated fishery yields threatening riverine livelihoods and food security.
Using REMO the regional climate model of the Max Planck Institute for Meteorology researchers tested
of which can have important impacts on people's livelihoods said Sukyoung Lee professor of meteorology.
Lee and her colleague Steven Feldstein professor of meteorology developed a new method to distinguish between the effects of the two forcings.
and pollen evidence that allows us to say just how long we've seen Serengeti-type open grasslands said Sarah J. Feakins assistant professor of Earth sciences at the USC Dornsife College of Letters Arts
which was published online in Geology on Jan 17. Feakins worked with USC graduate student Hannah M. Liddy USC undergraduate student Alexa Sieracki Naomi E. Levin of Johns hopkins university Timothy
The types of grasses appear to be sensitive to global carbon dioxide levels said Liddy who is currently working to refine the data pertaining to the Pliocene to provide an even clearer picture of a period that experienced similar atmospheric carbon dioxide levels to present day.
For the same average global surface temperature increase the weaker SST gradient produces less rainfall especially over tropical land says co-author Bin Wang professor of meteorology.
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