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Study finds there is less knowledge about global species diversity than previously assumed

Researchers conducted a long-term study on biodiversity in subtropical forests of China, finding that there might be an under- or overestimation of global biodiversity by up to 50% when only a few taxa are sampled. The study used traditional methods combined with DNA analysis to determine species numbers, revealing that larger areas an...

Global marine analysis suggests food chain collapse

A recent global analysis predicts a decline in marine species diversity and abundance as ocean acidification and warming are expected to have devastating effects on fisheries and ecosystems worldwide. Microorganisms are the only group likely to thrive, while carnivorous fish face a collapse from top of food chain.

SourceUniversity of Adelaide·JournalProceedings of the National Academy of Sciences·DateOct 12, 2015

Could more intensive farming practices benefit tropical birds?

A study in the Chocó-Andes of Colombia found that intensive farming practices lead to a loss of more than 650 million years of evolutionary history in bird species. Land-sparing approaches, which protect larger blocks of natural habitat, are recommended as a more effective way to preserve biodiversity.

SourceCell Press·JournalCurrent Biology·DateSep 3, 2015

Humped-back model of plant diversity withstands controversy

A new study using data from six continents provides strong evidence supporting the humped-back model (HBM) of plant species richness. The HBM theory suggests that environmental stress can lead to low plant productivity, with highly competitive species dominating at high productivity levels. The research found a very strong correlation ...

Unknown midge mystery solved

Researchers uncover hidden diversity in minute midges through DNA analysis and type material examination. Two new species were discovered and one misidentified species was corrected, shedding light on the fascinating world of non-biting midges.

SourcePensoft Publishers·JournalZooKeys·DateJun 18, 2015

Diversity in a monoculture

Scientists used tobacco plants with altered defense genes to demonstrate that functional diversity within a species is essential for ecosystem health. The study found that variations in single plant genes can have large effects on whole plant populations, improving their ability to defend themselves against herbivores and other threats.

Make your home a home for the birds

A University of Illinois Chicago study found that a neighborhood's small yards have a greater impact on the variety of native birds than larger landscape features. The researchers identified bird-friendly landscaping features such as fruit-bearing trees and shrubs to increase bird diversity in backyards.

SourceUniversity of Illinois Chicago·JournalEcological Applications·DateApr 9, 2015

Sex and the single evening primrose

Researchers found that sexually reproducing species are healthier and less likely to accumulate deleterious mutations over time. The study used the evening primrose plant as a model, comparing 30 pairs of species with different reproductive methods, revealing strong support for the theory that sex is beneficial for health in plants.

SourceUniversity of Toronto·JournalMolecular Biology and Evolution·DateJan 12, 2015

Four new dragon millipedes found in China

A team of speleobiologists has described four new species of dragon millipedes from southern China, highlighting their distinctive spiky bodies. The discovery sheds light on the genetic diversity of these bizarre creatures, with China holding the highest recorded number of species in the genus Desmoxytes.

SourcePensoft Publishers·JournalZooKeys·DateOct 30, 2014

A canary for climate change

Researchers found a strong correlation between Northern Hemisphere seabird diversity and environmental stressors, with puffins and auks serving as indicator species. The study suggests that climate change has shaped the geographic distribution and population size of existing species over the past 5 million years.

SourceNational Evolutionary Synthesis Center (NESCent)·JournalJournal of Avian Biology·DateOct 14, 2014

Prehistoric birds lacked in diversity

Researchers found a striking lack of diversity in the earliest known fossil bird fauna, with larger birds and water birds missing from the sample. The scientists applied a statistical technique to modern-day birds to relate physical characteristics to behavior, diet, and habitat.

Extinct carnivorous marsupial may have hunted prey larger than itself

Scientists reconstructed the skull of Nimbacinus dicksoni and found that it had a high bite force for its size, suggesting it could hunt vertebrate prey exceeding its own body mass. The research suggests that Nimbacinus dicksoni was an opportunistic hunter with potential prey including birds, frogs, and other marsupials.

SourcePLOS·JournalPLOS ONE·DateApr 9, 2014