Carbenoid Species Current Events

Carbenoid Species Current Events, Carbenoid Species News Articles.
Sort By: Most Viewed | Most Recent
Page 1 of 25 | 1000 Results
New carbenoid species yields unexpected reactivity
To day, chemists synthesize cyclopropanes using pure E or Z alkenes as starting materials and usually, dangerous, unstable reagents such as diazomethane or iodomethylzinc iodide. Now, a new species dubbed 'radical carbenoid' allows stereoconvergent cyclopropanation reactions. (2016-12-19)

Transformations of diazo compounds catalyzed by environmentally benign iron complexes
Iron can undergo facile changes in its oxidation state and possesses a distinct Lewis acid character. These properties have afforded iron a privileged position as a catalyst in the transformations of diazo compounds. In a new study, Chinese scientists review recent research on iron-catalyzed diazo transformation reactions. They also outline iron's potential as an inexpensive and environmentally benign alternative to precious metals, including rhodium, used in catalytic systems. (2015-01-06)

All species are not created equal when assessing the impacts of species loss on ecosystems
In the June Ecology Letters, Smith and Knapp show with an extinction scenario, in which rare and uncommon plant species were removed but most common or dominant species were always present, no decline in aboveground plant growth of a native grassland community was observed. Instead, the dominant species imparted resistance to ecosystem change, even in the face of a 3-fold decline in species. The loss of uncommon species did negatively affect the remaining rare species. (2003-05-22)

Introduced marine species get larger in the invaded region
The transport of species outside their native region through human activities often has a dramatic impact on the ecosystems into which these species are introduced and on the surrounding economies. The consequences of introduction are less recognized. In Ecology Letters, August, Grosholz found most marine invertebrate species increase in size in non-native regions, with little evidence of decreases found in other taxa. These size increases may have implications for the impact on native ecosystems. (2003-08-13)

How have European freshwater fish species changed over time?
Over time, humans have contributed to the loss of native species and have introduced non-native species throughout Europe. A new analysis shows how European freshwater fish have changed profoundly since 1840. At the continental scale, the contemporary fauna holds net 11 more species today as exotic species introduction (26 species) exceeded native species loss (15 species). But the biggest change was made by European species introduced from one area in Europe to another (77 species), often with fatal results. (2017-05-17)

Birds are on the move in the face of climate change
Research on birds in northern Europe reveals that there is an ongoing considerable species turnover due to climate change and due to land use and other direct human influences. (2017-09-07)

Viruses can evolve in parallel in related species
Viruses are more likely to evolve in similar ways in related species -- raising the risk that they will 'jump' from one species to another, new research shows. (2018-04-12)

Populations of common birds across europe are declining
Across Europe, the population of common birds has declined rapidly over the last 30 years, while some of the less abundant species are stable or increasing in number. (2014-11-04)

Study in bats and rodents offers insights on how viruses spread across species
Bats are natural reservoirs of several important emerging viruses, and because cross-species transmission appears to be quite common among bats, it's important to study bats in a community context rather than concentrating on individual species. (2015-08-25)

Exploring the avian biodiversity of Africa with different species concepts
A recent debate over the usefulness and relevance of the widely used Biological Species Concept, based on reproductive isolation, versus the Phylogenetic Species Concept, which is centred around identifying the smallest group with common ancestry, has raised concerns that changing nomenclatural foundations might result in the appearance of previously unrecognized patterns of biodiversity. (2005-09-27)

Biodiversity conservation - no guarantee for shortcuts
New research from scientists at the University of Sheffield published in the November issue of Ecology Letters has cast doubts on the widely held 'rule of thumb' that the conservation of a country's biodiversity can be guaranteed by focusing on protecting its threatened and endemic species. (2002-10-30)

Meet the tenrecs
Researchers reviewed the conservation priorities for the 31 species of tenrec -- a poorly understood family of small mammals superficially resembling hedgehogs, found only on the island of Madagascar. (2019-05-16)

Biocontrol research on Brazilian peppertree in Florida discovers new cryptic species
A species of moth from Brazil that was being considered for biocontrol of the Brazilian peppertree in Florida was sent to a USDA-Agricultural Research Service research entomologist for identification. In the course of the research, six new species were discovered. The study was published in the open access journal ZooKeys. (2013-02-06)

Time and money make a difference in endangered species recovery
Since passage of the Endangered Species Act in 1973, over 1,300 endangered species have been protected in the United States and its territories. In the forthcoming issue of Ecology Letters, Male & Bean assess 14 years of endangered plant and animal status trends and show that the length of time species are protected, and the amount of money spent on their conservation are key variables in explaining trends. (2005-08-15)

Cryptic worms encountered outside Sweden
Polychaete worms have populated the oceans for millions of years. Today they are the focus of study on cryptic species, which shows that apparently identical animals may be entirely different species. Researchers at the University of Gothenburg, Sweden, have now found new worm species in the Kattegat and Skagerrak. (2010-06-14)

Virus discovery helps scientists predict emerging diseases
Fresh insight into how viruses such as SARS and flu can jump from one species to another may help scientists predict the emergence of diseases in future. (2011-09-22)

Study examines the impact of climate change on freshwater species
How might climate change affect the distribution of freshwater species living in rivers, ponds, and lakes? Investigators examined the capacity of species to shift their distributions in response to climate change using modeled projections of 527 freshwater species in New South Wales, Australia. (2016-12-05)

Conservation in Canada
Conservation actions could be more efficient if there is similarity among taxa in the distribution of species. In Ecology Letters, May, an international research team, introduces patterns in the geographic distribution of five taxa used to identify nationally important regions for conservation in Canada. Congruence appeared in geographic distribution of taxa and a measure of the conservation value of areas for taxa. However, few large protected areas exist in the sites of highest conservation value. (2004-05-04)

Biodiversity and resilience of coral reefs
Indo-Pacific coral reefs incorporate diverse ecosystems but changes in ecosystem function on coral reefs at regional biogeographical scales as a result of overfishing of the parrotfish. Each parrotfish ingests over 5 tonnes of structural reef carbonates per year. Human activity and ecosystem disruption are strongly correlated, regardless of local fish biodiversity. The results emphasize the functional role of species when formulating management strategies and the potential weakness of the link between biodiversity and ecosystem resilience. (2003-04-08)

New species literally spend decades on the shelf
Many of the world's most unfamiliar species are just sitting around on museum shelves collecting dust. That's according to a report in the November 20th issue of the Cell Press journal Current Biology showing that it takes more than 20 years on average before a species, newly collected, will be described. (2012-11-19)

Limited climate tracking in European trees despite 10,000 years of postglacial warmth
The relative roles of environment and history as controls of large-scale species distributions is a crucial issue in biogeography and macroecology. In the July issue of Ecology Letters, Svenning & Skov use bioclimatic modelling to show that among 55 native European tree species, 36 occupy less than 50% of their climatically suitable range. (2004-06-10)

New mobile application for rapid identification of fish species
Azti-Tecnalia has presented (for the moment only for Android terminals) ItsasFish, a new mobile application which aims to be a manual for the rapid identification of species found in the fishing grounds of the Bay of Biscay and which are fished by the various fleets (each with their mode of fishing) based in the Autonomous Community of the Basque Country or Euskadi (the coast of the Basque provinces of Bizkaia and Gipuzkoa). (2013-10-14)

Lakes resist the introduction of new fish
Research from UmeƄ University in Sweden presents a new method of establishing how freshwater fish can defend themselves against an invasion of a new fish species. The method takes into account that resident species in a lake contribute at a varying degree to the resistance of the new species. (2015-11-11)

The use of wild mammals in traditional medicine
In an analysis of published research, investigators identified 565 mammalian species that have been used to source products used in traditional medicine around the world, especially in Asia, Africa, and Latin America (2020-12-09)

Researchers register new species using DNA-based description
The previously unknown species of ribbon worm discovered in Kosterhavet National Park in 2007 has now been scientifically named using a new method. Pseudomicrura afzelii, a form of nemertean or ribbon worm, has been described and registered by researchers at the University of Gothenburg, Sweden, using DNA technology. (2011-01-25)

International protection lags scientific assessment in species threatened by trade
Species that are threatened by wildlife trade take nearly 10 years to receive international protection once identified by the scientific community, according to Eyal Frank and David Wilcove in this Policy Forum. (2019-02-14)

Time record of marine species formation in the Baltic Sea
Four years ago researchers at the University of Gothenburg and Stockholm University discovered a new species of seaweed in the Baltic Sea. New studies reveal that this species may have formed only 400 years ago, making this seaweed species unique. (2009-04-14)

Study provides insights for combating devastating amphibian disease
Amphibian chytridiomycosis, caused by infection with the Batrachochytrium dendrobatidis fungus, is the most devastating vertebrate disease on record. (2017-11-14)

A new species of rare phylum Loricifera discovered in the deep-sea surrounding Japan
The Loricifera is a microscopic, sediment-dwelling marine invertebrate, with a head covered in over 200 spines and an abdomen with a protective shell - known as a lorica. Since it was first discovered in 1983, just under 40 species have been written about. Now, that number is one more thanks to a group of scientists who reported on a new genus and species of Loricifera. (2020-11-24)

3 new species of tiny frogs from the remarkable region of Papua New Guinea
Following the description of the world's smallest frogs, Dr. Fred Klaus now offers three more species of tiny amphibians from the region of Papua New Guinea, described in the open access journal Zookeys. Despite their minute size, around 20 mm, the three new frog species are still substantially larger than the prize holders, described in 2011. The new species represent a small part and attest for the remarkable anuran biodiversity of the Papuan region. (2013-09-20)

Animals that seem identical may be completely different species
Animals that seem identical may belong to completely different species. This is the conclusion of researchers at the University of Gothenburg, Sweden, who have used DNA analyses to discover that one of our most common segmented worms is actually two types of worm. (2009-04-22)

A detailed map of North and South America's plant diversity
A team of researchers has complied a comprehensive list of all known plants that take root throughout North and South America, shedding light on plant diversity and patterns across the two continents. (2017-12-21)

Unmasking the secrets of the extinct moa
Griffith researchers have used a DNA barcoding technique in an attempt to clarify the number of species which existed of the extinct New Zealand moa. (2014-03-03)

New 'umbrella' species would massively improve conservation
The protection of Australia's threatened species could be improved by a factor of seven, if more efficient 'umbrella' species were prioritised for protection, according to University of Queensland research. (2020-01-07)

Simple plants aren't always easy: Revision of the liverwort Radula buccinifera complex
Simple plants aren't always easy, proves the Radula buccinifera complex, formed of (2013-10-31)

When David beats Goliath
Body size has long been recognized to play a key role in shaping species interactions, with larger species usually winning conflicts with their smaller counterparts. But Queen's University biologist Paul Martin has found that occasionally, small species of birds can dominate larger species during aggressive interactions, particularly when they interact with distantly related species. (2014-09-24)

New species discovered on the Great Barrier Reef
Between the grains of sand on the sea floor there is an unknown and unexplored world. Pierre De Wit at Gothenburg University knows this well, and has found new animal species on the Great Barrier Reef, in New Caledonia and in the sea off the Gullmarsfjord in the Swedish county of Bohuslan. (2010-03-07)

New scorpion discovery near metropolitan Tucson, Arizona
A team of American zoologists has discovered a new species of Sky Island scorpion from the Santa Catalina Mountains of Arizona, less than 10 miles from metropolitan Tucson. Amazingly, the discovery was made by Dr. Rob Bryson Jr., while looking for a completely different animal. The scorpion found (2013-02-19)

Evidence for sympatric speciation by host shift in the sea
Using a combination of genetic, ecological, and biogeographic studies, researchers have found that a new species of reef fish might have evolved when some individuals of the ancestral population began inhabiting a novel species of coral and that this (2004-08-23)

The first endemic Baltic Sea fish species received its name
Researchers at the University of Helsinki discovered and named a new endemic fish species in the Baltic Sea, the 'Baltic flounder,' Platichthys solemdali. (2018-07-11)

Page 1 of 25 | 1000 Results
   First   Previous   Next      Last is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to