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Patches in Biological News

Isolated forest patches lose species, diversity

... the ecological changes already under way in the patches of forest that remain, says study co-author Don ... as parks or natural areas. "These forest patches are not just losing species their whole ... lose species. "When we isolated these forest patches 50 or 100 years ago, we were dooming species to ...

Study on wildlife corridors shows how they work over time

... of Washington have created these ecological patches with the help of the United States Forest ... strips of habitat that connect isolated habitat patches in fragmented landscapes. The landscape is ... There are also two other types of peripheral patches that help determine how corridors work. ...

Networks of small habitat patches can preserve urban biodiversity

... Sets of small and seemingly insignificant habitat patches that are within reach for mobile species may ... yesterday in Ecography , sets of small habitat patches can host species that require much larger habitat patches for their daily needs than what each patch itself ...

MIT creates tiny backpacks for cells

... target tumor cells, while cells equipped with patches carrying imaging agents could help identify ... possible application is in tissue engineering. patches could be designed that allow researchers to align ... synthesis and assembly takes place before the patches are attached to cells, there is plenty of ...

Sweat it out: UH study examines ability of sweat patches to monitor bone loss

... and human performance will examine how well sweat patches the size of adhesive strips can detect levels of ... professor and principal investigator. "These patches are small, non-intrusive, and placed on the skin ... Air Force recruits. Each will wear a series of patches during normal daily activities and then perform ...

Vitiligo skin disorder could yield clues in fight against melanoma

... called vitiligo, which causes unsightly white patches on the face, hands and other parts of the body. ... In the most common form of vitiligo, white patches form on both sides of the body. In 1993, singer ... 30. It's on her face, arms, legs and hands. The patches are more noticeable during the summer, when ...

Gypsy moth management made more efficient, cost-effective

... of medium-density and high-density infestation patches within their jurisdictions. The model ignores smaller patches because they often go extinct by themselves and, ... For example, if an area contains 20 medium patches and 20 large patches, the model suggests that ...

Marine bacteria's mealtime dash is a swimming success

... using their swimming skills to reach tiny food patches that appear randomly in the ocean blue. The ... is able to locate and exploit nutrient patches extremely rapidly, thanks to its keen swimming ... dissolved nutrients and often appear as localized patches that, if not eaten, are rapidly dissipated by ...

Flu vaccine in painless skin patches under development at Emory, Georgia Tech with NIH grants

... delivered through painless microneedles in patches applied to the skin could soon be an alternative ... and assess the effectiveness of transdermal patches that include arrays of microscopic needles containing or coated with vaccine. They hope to design patches that could be stored for long periods of time at ...

US-Mexico border wall could threaten wildlife species

... trees that are taller than the fence, and that are associated with patches of dense, low vegetation should not only promote permeability, agreed lead ... will vary among species," Flesch said. "Populations that are relegated to patches of habitat that are small and naturally fragmented are most likely to be ...

Texas-sized tract of single-celled clones

... Wiess Professor of Ecology and Evolutionary Biology, surmised that clonal patches could form on the edge of a microbial species' range, and they looked for ... strains is one focus of their work. "The existence of clonal patches in microbial species presents very interesting possibilities for the ...

Smithsonian scientists receive coveted BBVA Ecology and Conservation Award

... Research, INPA, continues to supply direct scientific evidence that small patches of forest do not sustain the same diversity of plants and animals as do larger patches and to elucidate the processes leading to the demise of fragmented ....

Compromised skin barrier function plays a role in psorasis development

... and hyper-proliferative skin disease, usually characterized by red scaly patches on the skin. Affecting about one percent of individuals, it is a recurring condition with varying degrees of severity from minor localised patches to complete body coverage. ...

UBC researcher reveals humpback whales' dining habits -- and costs

... the snout to the naval, these whales take deep dives in search of dense patches of tiny zooplankton, such as krill or copepods. While foraging, the ... the next dive. The whales also stuck to the uppermost level of dense krill patches to maximize prey catch for its energy expenditure, according to the study. ...

Multiple Sclerosis: new MRI contrast medium enables early diagnosis in animal model

... at the University hospital of Heidelberg. Previously unrecognized patches of demyelination visible in MRI MS is a chronic inflammatory disease ... le-sions in which nerve fibers lose their myelin sheath. These patches of demyelination cause neurological malfunctions that may regress upon ...

Model connects circuit theory to wildlife corridors

... what McRae calls the Isolation by Resistance model. The model represents patches of habitat as nodes in an electrical circuit and the genes of animals and ... Corridors keep plants and animals from becoming trapped on small patches of land, where they would suffer from inbreeding and other problems that ...

Innovative model connects circuit theory to wildlife corridors

... what McRae calls the Isolation by Resistance model. The model represents patches of habitat as nodes in an electrical circuit and the genes of animals and ... Corridors keep plants and animals from becoming trapped on small patches of land, where they would suffer from inbreeding and other problems that ...

Global warming increasing the dispersal of flora in Northern forests

... global warming may have a significant impact, as original and newly introduced species spread faster from one place to another and take over new patches of habitat. The combined effects of global warming are difficult to predict, and the research carried out by Kuparinen's team illustrates the ...

Wildlife Conservation Society supports world's first study of egg-laying mammal

... female holds in a sticky pouch. The hatchling (known as a "puggle") resides in the pouch for between 40-50 days and receives milk from two mammary patches (echidnas have no teats). Once the puggle develops spines, the mother digs a nursery den that becomes the puggle's new home; the mother returns ...

Wiping out the world's mass migrations

... sites in Yellowstone and Alberta. Similar changes are found on other continents when human activity limits the ability of species to move to new patches of food. The analysis found even more drastic curbing for six species in particular. The springbok ( Antidorcas marsupialis ), black wildebeest ( ...

Activated stem cells in damaged lungs could be first step toward cancer

... mechanism is important for restoring lung function, it can come at a price. An acquired mutation in that rare cell or its descendants leads to clonal patches of many identical cells. Secondary mutations in any one of these cells may provide the signals needed for unregulated cell growth and tumor ...

First jaguar photo taken at Smithsonian Research Station in Panama

... even one animal. But the presence of even the odd individual that swims out there means that jaguars are still moving through the Canal area between patches of fragmented forest," said William Laurance, staff scientist at the Institute. The Willis' began using camera traps in 1994 as a tool to record ...

Tips from the American Journal of Pathology

... are presented in the April 2009 issue of The American Journal of Pathology . Psoriasis is a chronic inflammatory disease that causes red scaly patches to appear on the skin. It is characterized by excessive skin production, formation of new blood vessels, and the presence of white blood cells. ...

Earth's highest known microbial systems fueled by volcanic gases

... well understood as microbes living in hydrothermal vents in deep oceans, he said. The Socompa microbial communities are located adjacent to several patches of green, carpet-like plant communities -- primarily mosses and liverworts -- discovered in the 1980s by Stephan Halloy of Conservation International ...

Missing genes link to psoriasis

... Michigan, Seattle, Rome and Evry in France. Psoriasis is a common skin condition affecting about two per cent of the UK population, and causes patches of scaly, itchy skin. It generally affects prominent areas such as the elbows and knees, and commonly affects the scalp, but can affect any part of ...

Researchers identify 4 genetic hotspots associated with psoriasis

... University of Utah and Celera Group, have a high association with psoriasis, an automimmune disease that can affect the joints and cause sore, itchy patches of skin in an estimated 7.5 million people in the United States. The study was led by James T. Elder, M.D., Ph.D., a dermatologist who heads a ...

Scientists uncover new genetic variations linked to psoriasis

... an autoimmune disease that occurs when the body's immune cells mistakenly attack the skin. The condition is usually characterized by red, scaly skin patches that can be itchy, painful or both. Some 10 to 30 percent of patients with psoriasis develop psoriatic arthritis, which occurs when inflammation ...

Shade coffee benefits more than birds

... But this study shows that shade coffee farms, by being hospitable to birds, support widespread dispersal of native trees, in effect connecting patches of surrounding forest. In addition, shade coffee farms may serve as reservoirs for future forest regeneration, as the farms typically fall out of ...

New research lights up chronic bacterial infection inside bone

... up bacteria and allow them to see extremely tiny amounts of bacterial cells in living animals. Using this method, they found that small persistent patches of Listeria took up residence inside bone marrow in the mice. This is significant because it is thought that the bone marrow can act as a reservoir ...

Tiny MIT ecosystem may shed light on climate change

... ocean and passively taking up the chemicals required for growth, many microbes exhibit sophisticated behaviors as they forage in an environment where patches of nutrients and resources are few and far between," Seymour said. Oceanographic ecological research has typically taken place at much larger ...

Rooted plants move mysteriously down greenways, scientists say

... shrubs, forbs and grasses, which typically moves a seed no more than a few meters per year, cannot account for the rapid colonization of connected patches 150 meters distant," the paper says. With no obvious alternative, Levey said one possible explanation is that the plants' seeds aren't as ...

Polarized light guides cholera-carrying midges that contaminate water supplies

... their eggs, but it wasn't clear what drives a female to select a particular pond. Meltser and Broza had noticed that the tormenting insects prefer patches of water that reflect little light, and when they heard that dark water reflects more polarized light than brightly lit water the pair wondered ...

Decline in Alaskan sea otters affects bald eagles' diet

... the proportion of marine birds in the eagles' diet was much higher. Anthony explains that because the eagles defend territories in dense patches along the coastline and there are few terrestrial animals to eat, they must be flexible in what they hunt. "These bald eagles are opportunistic ...

National Science Foundation grant expands UMCES oyster research

... use polarized light to identify oyster larvae in the samples. Back in the lab, they will map the distribution of the larvae in the river and track patches of them as they are transported by the currents before they settle onto oyster bars. "By better understanding how the physical conditions of the ...

The pepperoni pizza hypothesis

... with an anesthetic in a suppository or gel. Another possibility is an anesthetic patch applied to pelvic skin. Studies in back pain show anesthetic patches applied to the skin can reduce back pain, Klumpp said. "We imagine a similar kind of patch might be used to relieve pelvic pain, which might be ...

Evolving designer ecosystem sheds light on unintended consequences

... stream channels, disrupting the flow of water and sediments from tributary networks to the main channel. In pristine streams, sandbars and other patches created where these sediments collect are often ideal places for nutrient cycling. By starving streams of their historic supply of this material, ...

Antarctic fossils paint a picture of a much warmer continent

... documented the timing and the magnitude of a tremendous change in Antarctic climate: the transition marks a shift from warm, temperate glaciers with patches of fringing tundra to today's cold-polar glaciers set within in a barren polar desert," said Marchant. "The contrast couldn't be more striking. It is ...

Saving our bees

... in different landscapes. "Crucially, our model is able to predict the behavior of bees in larger-scale foraging environments, where the foraging patches can be thought of as large fields of crops," says Chalk. His model, he says, could help scientists understand how land disturbance caused by humans ...

Scripps study sets high economic value on threatened Mexican mangroves

... satellite images. To fill in gaps related to small mangrove wetlands, the researchers conducted field trips in 2005 and 2006 to survey mangrove patches distributed in small bays and islands. Using small boats, the researchers navigated inside lagoons and hiked across the inland parts of the forests ...

Scattered nature of Wisconsin's woodlands could complicate forests' response to climate change

... are broken up by farmland and urban areas - or fragmented - like they are in Wisconsin. Not only is less suitable habitat available overall, but patches of it can also be widely scattered, making it tough for seeds to cross the gaps. In particular, Mladenoff points to the wide band of agricultural ...
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