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Categories: Biology: Zoology, Paleontology: Climate
Published Most detailed geological model reveals Earth's past 100 million years
(via sciencedaily.com) Previous models of Earth's recent (100 million years) geomorphology have been patchy at best. For the first time a detailed continuous model of the Earth's landscape evolution is presented, with potential for understanding long-term climate and biological development.
Published Animals best to suppress personalities for group efficiency
(via sciencedaily.com) Social animals should limit individuality to conform with the behavior of the group, a study suggests.
Published Fluorescent protein sheds light on bee brains
(via sciencedaily.com) An international team of bee researchers has integrated a calcium sensor into honey bees to enable the study of neural information processing including response to odors. This also provides insights into how social behavior is located in the brain.
Published Insights into the evolution of the sense of fairness
(via sciencedaily.com) A sense of fairness has long been considered purely human -- but animals also react with frustration when they are treated unequally by a person. In a study with long-tailed macaques (Macaca fascicularis), researchers have now confirmed an alternative explanatory approach. A combination of social disappointment with the human experimenter and some degree of food competition best explains their behavior in an 'inequity aversion' experiment.
Published Wisconsin cave holds tantalizing clues to ancient climate changes, future shifts
(via sciencedaily.com) A newly published study of a stalagmite found in Cave of the Mounds reveals previously undetected history of the local climate going back thousands of years. Researchers describe evidence for an ice age punctuated by massive and abrupt warming events across much of the Northern Hemisphere.
Published How consciousness in animals could be researched
(via sciencedaily.com) Animal consciousness should not be thought of as a light switch, which can be on or off, philosophers say. They advocate a different approach.
Published Bald eagles aren't fledging as many chicks due to avian influenza
(via sciencedaily.com) Bald eagles are often touted as a massive conservation success story due to their rebound from near extinction in the 1960s. But now a highly infectious virus may put that hard-fought comeback in jeopardy. New research showed highly pathogenic avian influenza, also known as H5N1, is killing off unprecedented numbers of mating pairs of bald eagles.
Published U.S. birds' Eastern, Western behavior patterns are polar opposites
(via sciencedaily.com) Scientists have established what could be considered a baseline map of annual avian functional and species diversity patterns in the U.S., finding that functional diversity patterns in the West, where species and functional richness are both highest during the breeding season, are the polar opposite of what is seen in the East, where functional diversity is lowest when species richness is high.
Published Researchers provide proof of the helical coiling of condensed chromosomes
(via sciencedaily.com) Original source In early cytological studies chromatids of metaphase chromosomes were suggested to coil into a spiral called chromonema. This assumption was recently supported by chromosomce conformation capture sequencing. Still, the direct visualization of the coiled chromonema confirming the helical model was lacking. Now, an international research team provides the direct proof of the helical coiling of condensed chromatids via super-resolution microscopy of specifically labelled chromonema regions.
Published Bronze Age well contents reveal the history of animal resources in Mycenae, Greece
(via sciencedaily.com) Original source A large Bronze Age debris deposit in Mycenae, Greece provides important data for understanding the history of animal resources at the site, according to a new study.
Published Prehistoric sea monster may have been shorter, stouter, than once believed
(via sciencedaily.com) A big fish story? Maybe so: The greatest sea monster of the Devonian Period (Dunkleosteus terrelli) may be getting downsized. A new article contents that the famous sea monster of the Age of Fishes may not have neared 30-feet in length, as long believed, but topped off at maybe 13 feet. The new assertion brings attention to a famously fierce looking armored fish from 360 million years ago -- and maybe a new debate.
Published Mulching time of forest meadows influences insect diversity
(via sciencedaily.com) Researchers have examined how mulching at different times affects insect flower-visitors and larvae.
Published Ice Age survivors
(via sciencedaily.com) Large-scale genomic analysis documents the migrations of Ice Age hunter-gatherers over a period of 30,000 years -- they took shelter in Western Europe but died out on the Italian peninsula.
Published Oldest human genome from southern Spain
(via sciencedaily.com) A new study reports on genomic data from a 23,000-year-old individual who lived in what was probably the warmest place of Europe at the peak of the last Ice Age. The oldest human genome recovered from the southern tip of Spain adds an important piece of the puzzle to the genetic history of Europe.
Published Reassessment of Storegga event: Second major landslide recognized
(via sciencedaily.com) Submarine landslides have a large tsunami potential and occurred on the central Norwegian shelf more frequently in the past than previously thought. Scientists investigate the Nyegga landslide off the coast of Norway. The submarine landslide occurred in the same area as the well-known Storegga event 8,150 years ago. The new findings suggest that approximately one-third of the seafloor material missing -- previously attributed to the Storegga event -- was removed by the Nyegga event 20,000 years ago. This raises questions about the frequency of large submarine landslides and their associated tsunami hazard.
Published Climate trends in the west, today and 11,000 years ago
(via sciencedaily.com) What we think of as the classic West Coast climate began just about 4,000 years ago, finds a study on climate trends of the Holocene era.
Published Clues about the Northeast's past and future climate from plant fossils
(via sciencedaily.com) A team of researchers is working to understand the details of the climate for the eastern portion of the United States from the Miocene, which unfortunately is a blank spot on paleo-climate maps. New findings suggest the future climate will be very close to the warmer, wetter, and more homogeneous climate similar to conditions experienced 5 million years ago.
Published Early Cretaceous shift in the global carbon cycle affected both land and sea
(via sciencedaily.com) Geologists doing fieldwork in southeastern Utah's Cedar Mountain Formation found carbon isotope evidence that the site, though on land, experienced the same early Cretaceous carbon-cycle change recorded in marine sedimentary rocks in Europe. This ancient carbon-cycle phenomenon, known as the 'Weissert Event' was driven by large, sustained volcanic eruptions in the Southern Hemisphere that greatly increased carbon dioxide levels in the atmosphere and produced significant greenhouse climate effects over a prolonged time.
Published Bouncing seismic waves reveal distinct layer in Earth's inner core
(via sciencedaily.com) Data captured from seismic waves caused by earthquakes has shed new light on the deepest parts of Earth's inner core, according to seismologists.
Published New knowledge about ice sheet movement can shed light on when sea levels will rise
(via sciencedaily.com) The trawling of thousands of satellite measurements using artificial intelligence has shown researchers that meltwater in tunnels beneath Greenland's ice sheet causes it to change speed, and in some places, accelerate greatly towards the ocean. This can increase melting, especially in a warming climate, which is why the study's researchers think that it is important to keep an eye on.