ecology

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...ays," said Donald Croll, an assistant professor of ecology and evolutionary biology at the University of Cali... the foxes, said James Estes, adjunct professor of ecology and evolutionary biology at UCSC and a coauthor of the paper. "Most seabirds only have a single off...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

...e to their tissues. Timothy Bradley, professor of ecology and evolutionary biology at UCI, and Stefan Hetz, assistant professor of physiology at Humboldt University, Germany, report their findings in the Feb. 3 issue of Nature. The insect respiratory system is designed to accommodate occasions when the ins...

A new study examines how shared pathogens affect host populations

...n Naturalist is a leading journal in the fields of ecology and evolutionary biology and animal behavior. For more information, please see our website: www.journals.uchicago.edu/AN Volker H. W. Rudolf and Janis Antonovics, "Species coexistence and pathogens with frequency-dependent transmission" 165:7 July 2...

Cricket's finicky mating behavior boosts biodiversity

...s. The more species you have, the more complex the ecology is going to be." In down-to-earth terms: "What turns a female cricket on? Why does she prefer one pulse rate over another? Whatever the reason, it's very important that she exercise this preference in order to keep the species distinct." Mendelson...

Flocking together: Study shows how animal groups find their way

... the little guy," said Daniel Rubenstein, chair of ecology and evolutionary biology. "You don't need avowed leaders, you don't need complex signaling." In the simulations, a small number of "informed" individuals was just about as effective in leading a large group as a small one. When the size of the group...

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Microbial Diversity in Ground and Surface Water Analyzed by Denaturing Gradient Gel Electrophoresis Using the DCode System

...culturable. 1 A new approach in microbial ecology is based on the analysis of bacterial genetic information without cultivation. This culture-independent approach has greatly enhanced the ability to assess bacterial diversity in ecosystems such as ground and surface water env...

Monitoring Bacterial Genetic Diversity in a Freshwater Lake Using TTGE and DNA Sequence Analysis

...ool, UK Introduction Microbial ecology is now firmly focused on the genotypic analysis of naturally-occurring assemblages as facilitated by the development of molecular biological techniques that enable amplification and sequencing of DNA extracted directly from th...

Economist calls for an end to "business as usual" on climate change

...reate more opportunities to connect the economy to ecology and make addressing climate change part of an economic-development strategy. In the United states, where the Kyoto Protocol to limit greenhouse gases has been rejected, the issue is being addressed entrepreneurially with businesses starting in th...

Global information firm reaches diverse markets

... Rooney, who holds a bachelor of science degree in ecology and a master of science degree in soil physics from Texas A&M University and a Ph.D. in environmental monitoring from the University of Wisconsin-Madison , created his company with colleague Marek Dudka in 1999. Without any outside investments, R...

ecology at Biology Definition

Zoology

...cular genetics and developmental biology The ecology of animals is covered under behavioral ecology and other fields Evolutionary biology of both animals and plants is considered in the articles o...

Thermoregulation

...ogy has been called ecophysiology or physiological ecology ). Whereas an organism that thermoregulates is one that keeps its temperature constant and adapts to the temperature of the environment, thermoconformer changes its body temperature according to the temperature outside of its body. It was not...

Population

...ied in biology , in particular in that branch of ecology known as population biology , and in population genetics . In biology, a population denotes a breeding group whose members breed mostly or solely among themselves, usually as a result of physical isolation, although biologically they could breed ...

Physiology

...to understand how physiological traits affect the ecology of a given animal or plant and vice-versa. Genetics is not the only factor that affects the physiology of animals and plants. Environmental strains wreak havoc on eukaryotic organisms as well. For organisms that do not dwell in aquatic habit...

Alga

...Eukaryotic algae 2 Forms of algae 3 Algal ecology 4 External links Relationships among ...tic not found in the other algal groups. Algal ecology Algae are a significant part of aquatic ecology. Larger algae, called seaweeds , grow mostly in ...

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ecology at Biology Dictionary

Xenobiology

...population s and their habitat s are examined in ecology and evolutionary biology . A speculative new field is astro biology (or xenobiology ) which examines the possibility of life beyond the Earth. Full article >>>...

Transition

... community in an area virtually barren of life. ecology [Gk. oikos, home + logos, a discourse] ... Full article >>> Transition states Fig-1 demonstrates the relationship between activation energy ( Ea ) and enthalpy of formation ("H) with and without a catalyst. The highest energy posi...

Trans

... community in an area virtually barren of life. ecology [Gk. oikos, home + logos, a discourse] ... Full ...Full article >>> Dispersal (sensu ecology ): the trans port of propagules away from the parent. Diversity: a) the total number of species p...

Tracheae

...rovides the organ s with oxygen . Lifecycle and ecology Habitat ... Full article >>> In insects, the blood (more properly called hemo lymph ) is not involved in the trans port of oxygen . (Openings called tracheae allow oxygen from the air to diffuse directly to the tissue s). Fu...

Taxonomy

...the following subject categories: biogeography , ecology , evolution , landscape ecology , and taxonomy . Full article >>> Taxonomy The field of science that class ifies ...

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ecology at Medicine News

WHO says damage to eco systems are affecting human health

... way. The report emphasizes that the link between ecology and human health is of a complex nature and hence ... the first of a series that will assess the global ecology in its present state and its long term benefit on human health is being compiled with the help of 13...

Fluorescent markers to distinguish Trypanosoma brucei strains causing Sleeping Sickness

...mportant by opening new avenues of research on the ecology and evolution of mixed trypanosome infections and their implications for disease dynamics and control. The authors assert that they will be of specific interest to researches addressing ecological, evolutionary and epidemiological questions using try...

Growth Of Maple Trees Affected By Acid Rain

... activity, said Timothy Fahey, professor of forest ecology at Cornell and co-author of the study, which is published in the May issue of Ecology. Juice wrote the main part of the paper as part of her senior thesis. ‘The research addresses how a long-term, human-caused change in the environment is affecting...

Tasmanian Ecology Affected By Devil Facial Tumor Disease

...l population in the Mt William National Park. The ecology of the area has changed and one can see carcasses lying around the area. Wedge-tailed eagles are feeding on the carcasses and this species is also being threatened by the disease. The animals are now vulnerable to being killed or replaced by the nasc...

Satellite Imagery to monitor the Social Impact Of Geographical Changes

...reasing, the global climate is changing and global ecology is being altered. All are thought to be related to the emergence of new diseases or re-emergence of old diseases, he said. . ."One of the new paradigms for looking at this kind of thing is that we try to understand the disease as not just something t...

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