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The Original Twitter? Tiny Electronic Tags Monitor Birds’ Social Networks

By Guest PostSeptember 24, 2012Nature, Sciencearchipelago, bird, brian otis, broadcast, costa rica, crow, drexel university, ecology, encounternet, forest, frequency, galapagos islands, german, internet, islands, john burt, lysanne snijders, Netherlands, new caledonia, radio tracking, radio transmitter, scotland, social behavior, social mobility, social network, South Pacific, st andrews, Technology, university, Washington, wireless sensor, woodland bird

If two birds meet deep in the forest, does anybody hear? Until now, nobody did, unless an intrepid biologist was hiding underneath a bush and watching their behavior, or the birds happened to meet near a research monitoring station. But an electronic tag designed at the University of Washington can for the first time see when birds meet in the wild.

A new study led by a biologist at Scotland’s University of St. Andrews used the UW tags to see whether crows might learn to use tools from one another. The findings, published last week in Current Biology, supported the theory by showing an unexpected amount of social mobility, with the crows often spending time near birds outside their immediate family. (more…)

Another Vertebrate Species Reported Extinct from the Hawaiian Islands

By Guest PostMarch 22, 2012Naturearchipelago, blue tailed skink, chris brown, cnrs, copper striped, cryptic extinction, emoia impar, extinction, hawaiian islands, ivan ineich, kauai, lizard, marcia mcnutt, maui, napali coast, oahu, oryx, Paris, robert fisher, skink, species, tropical, tropical pacific, united states, vertebrate species

HONOLULU – A species of lizard is now extinct from the Hawaiian Islands, making it the latest native vertebrate species to become extirpated from this tropical archipelago.

The copper striped blue-tailed skink (Emoia impar) — a sleek lizard with smooth, polished scales and a long, sky-blue tail — was last confirmed in the Na’Pali coast of Kauai in the 1960s. But repeated field surveys on Kauai, Oahu, Maui and Hawai’i islands from 1988 to 2008 have yielded no sightings or specimens. (more…)

Warming North Atlantic Water Tied to Heating Arctic, According to New Study

By Guest PostJanuary 31, 20111 commentEnvironmentalaska, archipelago, arctic ocean, Arctic sea ice, arctic warming, foraminifera shells, fram strait, global warming in the arctic, greenland, ice free, kirstin werner, loss of arctic sea ice, medieval warm period, north atlantic ocean water, norway, robert spielhagen, svalbard, temperature, thomas marchitto, university of colorado at boulder

The temperatures of North Atlantic Ocean water flowing north into the Arctic Ocean adjacent to Greenland — the warmest water in at least 2,000 years — are likely related to the amplification of global warming in the Arctic, says a new international study involving the University of Colorado at Boulder.

Led by Robert Spielhagen of the Academy of Sciences, Humanities and Literature in Mainz, Germany, the study showed that water from the Fram Strait that runs between Greenland and Svalbard — an archipelago constituting the northernmost part of Norway — has warmed roughly 3.5 degrees Fahrenheit in the past century. The Fram Strait water temperatures today are about 2.5 degrees F warmer than during the Medieval Warm Period, which heated the North Atlantic from roughly 900 to 1300 and affected the climate in Northern Europe and northern North America. (more…)

Tag Archives: archipelago

The Original Twitter? Tiny Electronic Tags Monitor Birds’ Social Networks

Another Vertebrate Species Reported Extinct from the Hawaiian Islands

Warming North Atlantic Water Tied to Heating Arctic, According to New Study