Tag: "undisturbed" at biology news

Disturbance can benefit some rare forest plants

...sive removal of canopy trees. Moreover, preserving undisturbed forests remains important because they often have more biodiversity than disturbed forests....

UF researchers: beach mice face high probability of extinction

...ions -- thanks to coastal development, Oli said.On undisturbed lands, beach mice live on dunes, but retreat to ne...result, the mice have no refuge. Not only that, in undisturbed areas, mice living in scrub habitat can repopulate frontal dunes after catastrophes, whereas if the ...

African bone tool discovery has important implications for evolution of human behavior

...be clearly visible and the sand layers are clearly undisturbed above where many of the bone tools occur. At other archaeological sites in South Africa, such as at Die Kelders Cave 1, similar dune layers are found and they date to the Last Glacial (roughly 60,000-70,000 years ago) when the ocean withdrew furthe...

Outside-in conservation: What's around an area

...higher indisturbed streams that are confluent with undisturbed streams. The need to include the "outside" in conservation planning ishighlighted in a pair of papers in the February issue of ConservationBiology. "We propose that the matrix within which habitat fragments occur is ofequal importance," say Ivette Pe...

Fragmentation can make seedlings wimpy

...lations were at about 4/acreand were surrounded by undisturbed forest. The researchers evaluatedfactors including seed production, relatedness and germination. Quesada and his colleagues found that fragmentation decreased the vigorof S. saman seeds and seedlings. For instance, seeds from isolated treeswere 15% l...

URI Graduate School of Oceanography scientists examine the success of restored salt marshes

... the diets of salt marsh predators in restored and undisturbed marshes to help determine the success or failure o... the diet and growth parameters of mummichogs from undisturbed and restored marshes to determine if the restored marsh provided similar food resources as the site ...

Unique social system found in famous Tsavo lions

...worlds best-studied mammals, no one has documented undisturbed groups of seven-to-eight adult females with a single adult male, says Roland Kays, PhD, co-author of the research to be published online April 11 by NRC Research Press Canadian Journal of Zoology. Most of what we know about lions comes from studi...

People and fire at Florida's wildland-urban interface

...--perceived as providing access to a more natural, undisturbed forestvalued higher. The study highlights some of the challenges facing policy makers and land managers concerned with reducing wildfire risk or maintaining fire-adapted ecosystems in areas with a growing population either unaccustomed or averse to ...

A new role for a versatile stem cell

...rtz et al. caution, it remains unclear whether the undisturbed marrow of healthy animals contains any single stem cell type with the developmental plasticity of MAPCs-- a caveat that might be applied to much of current stem cell research....

Guyana establishes its first conservation concession

...plementation of a conservation program. "Guyana's undisturbed forests are of global importance because of their rich biological diversity," said Major General (retd) Joseph Singh, Executive Director of CI-Guyana. Conserving these forests will benefit our nation and will provide a valuable service to the world."...

Sea snake homing instinct could nix translocation

...stated, populations on certain islands can be left undisturbed while those on other islands can be harvested. That way, we can be certain we are not wiping out the entire species, and at the same time we are not depriving people of their livelihood," says Shetty....

URI biologist to monitor salt marshes in national parks

...Pirri may monitor that location in addition to the undisturbed marsh to track the progress or decline of the disturbed marsh. "Salt marshes are sensitive to natural and human-induced disturbances, such as nutrient enrichment, watershed development, tidal alteration, ditching, storms, sea level rise, oil spills,...

An origin of new world agriculture in coastal Ecuador

... squash native to Ecuador, were clearly evident in undisturbed strata dated to 10,130 to 9320 carbon-14 years (roughly 12,000 to 10,000 calendar years ago). The carbon remaining from plant cells that survives inside phytoliths was dated using new methods developed by the authors in collaboration with a radioca...

Chimpanzees with little or no human contact found in remote African rainforest

... the park and its intact ecosystem and undisturbed animal populations would be protected ... residing in the largest tracts of undisturbed forest remaining in equatorial Africa." As a result of her visit to the Gou...

Tufts environmental engineers tackle destructive nutrients in nations waterways

...arch because they encompass urban, residential and undisturbed lands with streams and lakes. Many of these areas have been heavily affected by decades of development and contamination. A half-million Massachusetts residents--just under 10 percent of the state's population--live in 21 cities and towns within th...

Plant diversity threatened by climate change and buildup of greenhouse gas, study reveals

...ter, between 1998 and 2001. Four circles were left undisturbed as experimental controls. Each of the remaining 32 circles was divided into four quadrants like a birthday cake cut into equal pieces for a total of 128 experimental plots. Different treatments were applied to different plots. Some were given a sin...

Can EPO prevent loss of brain function in schizophrenia?

...interactions in the brain, resulting in an overall undisturbed neural function. Neuroprotection is a novel approach for the treatment of schizophrenia. Over the last decade it has become clear that in addition to disturbed brain development, continuous neurodegenerative processes are involved in the progression...

Researchers-again-pinpoint why stress kills

...r a total of four weeks. Control animals were left undisturbed in their home cages with the exception of routine handling (i.e., regular cage cleaning and measuring of body weight), which was matched to that of the CMS group. This CMS model provided an opportunity to examine a potential link between experimental...

Using soils as filters to prevent 'crypto' from moving to the groundwater

...tial flow model. Column experiments with sandy and undisturbed structured soils were performed. Calf manure with cryptosporidiosis was applied to the columns soil surface, followed by rain. Chloride was also added as a tracer. "Traditionally, people assume that soils filter out pathogens. This is based upon the ...

NCAR aircraft, ground instruments to track carbon dioxide uptake

...ccurs in forests, which are typically left to grow undisturbed in mountainous regions. Ground-based sensors work well in flat land: there are 200 such sites around the world. But in mountain ranges special conditions, such as turbulent airflow, snow pack, vegetation patterns, and contrastsin sunshine and shade, ...

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