ScienceDaily: Top Environment News

---

• Cloud mystery solved: Global temperatures to rise at least 4°C by 2100
• Major reductions in seafloor marine life from climate change by 2100
• DNA barcoding to monitor marine mammal genetic diversity
• DNA barcodes made of 147 bird species from The Netherlands
• The value of museum collections for development of DNA barcode libraries
• Testosterone in male songbirds may enhance desire to sing, but not song quality
• Meloidogyne mali: A new invasive plant parasitic nematode in Europe
• Earth's crust was unstable in Archean eon; Dripped down into mantle
• Mongooses synchronize births to escape despotic females

Cloud mystery solved: Global temperatures to rise at least 4°C by 2100 Posted: 31 Dec 2013 06:44 AM PST Global average temperatures will rise at least 4°C by 2100 and potentially more than 8°C by 2200 if carbon dioxide emissions are not reduced according to new research that shows our climate is more sensitive to carbon dioxide than most previous estimates.

Major reductions in seafloor marine life from climate change by 2100 Posted: 31 Dec 2013 06:43 AM PST A new study quantifies for the first time future losses in deep-sea marine life, using advanced climate models. Results show that even the most remote deep-sea ecosystems are not safe from the impacts of climate change.

DNA barcoding to monitor marine mammal genetic diversity Posted: 30 Dec 2013 10:50 AM PST Marine mammals are flagship and charismatic species. Attractive for the general public, nowadays, they are also considered as highly relevant sentinel of the marine realm as indicator for environmental change. A recent article suggests that the use of DNA barcoding in conjunction with a stranding network will clearly increase the accuracy of the monitoring of marine mammal biodiversity.

DNA barcodes made of 147 bird species from The Netherlands Posted: 30 Dec 2013 10:50 AM PST An Iranian ornithologist used a "ready for use" museum collection to DNA barcode 147 bird species from The Netherlands. While fast and accurate identifications could be confirmed for most species, gulls and skuas showed fuzzy boundaries and, in contrast, Lesser Whitethroats diversified in more than one species.

The value of museum collections for development of DNA barcode libraries Posted: 30 Dec 2013 10:50 AM PST The ability to sequence the DNA of plants and animals has revolutionized many areas of biology, but the unstable character of DNA poses difficulties for sequencing specimens in museum collection over time. In an attempt to answer these issues, a recent study of 31 target spider species discovers that both time and body size are significant factors in determining which specimens can produce DNA sequences.

Testosterone in male songbirds may enhance desire to sing, but not song quality Posted: 30 Dec 2013 10:49 AM PST Introducing testosterone in select areas of a male canary's brain can affect its ability to successfully attract and mate with a female through birdsong. These findings could shed light on how testosterone acts in the human brain to regulate speech or help explain how anabolic steroids affect human behaviors.

Meloidogyne mali: A new invasive plant parasitic nematode in Europe Posted: 30 Dec 2013 07:15 AM PST A recent study shows that a root-knot nematode species previously considered indigenous to Europe was actually introduced from Asia, and that its host range is wider than previously thought.

Earth's crust was unstable in Archean eon; Dripped down into mantle Posted: 30 Dec 2013 07:14 AM PST Earth's mantle temperatures during the Archean eon, which commenced some 4 billion years ago, were significantly higher than they are today. According to recent model calculations, the Archean crust that formed under these conditions was so dense that large portions of it were recycled back into the mantle.

Mongooses synchronize births to escape despotic females Posted: 23 Dec 2013 03:14 PM PST Some mammals may have evolved to synchronize births as a way of evading the threat of infanticide, according to a study.

You are subscribed to email updates from ScienceDaily: Top Environment News To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google Inc., 20 West Kinzie, Chicago IL USA 60610