Tag Archives: expedition

Expedition finds Nemo can travel great distances to connect populations

Clownfish spend their entire lives nestling in the protective tentacles of host anemones, but new research shows that as babies they sometimes travel hundreds of kilometres across the open ocean. Although the process of long-distance dispersal by reef fish has been predicted, this is the first time that the high level exchange of offspring between distant populations has been observed.

Dr Steve Simpson, Senior Lecturer in Marine Biology and Global Change in Biosciences at the University of Exeter, and colleagues from the Australian Research Council Centre of Excellence for Coral Reef Studies (ARC COE CRS), Sultan Qaboos University (Oman) and the Centre National de la Recherche Scientifique (France) have published their findings on the dispersal of Omani clownfish larvae in the journal PLOS ONE. (more…)

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Ins Feld, Forscher!

Helfer für Schneeleoparden-Schutzprojekt gesucht

Verschneite Berggipfel, wilde und seltene Tiere, Eintauchen in eine ganz andere Kultur – so manch einen ergreift das Fernweh, wenn er an das nördliche Tian-Shan-Gebirge in Kirgistan denkt. Doch die Region benötigt vor allem Hilfe, um eine der am stärksten gefährdeten Großkatzen der Welt zu schützen: den Schneeleoparden. Daher hat der NABU Kirgistan eine Kooperation mit der Naturschutzorganisation Biosphere Expeditions gestartet.

„Biosphere Expeditions ermöglicht es Laien, an echten Naturschutz-Mitforscherreisen teilzunehmen.“, erklärt Dr. Matthias Hammer, Gründer und Chef von Biosphere Expeditions. „Das lokale Wissen des NABU Kirgistan und unser Know-how im Bereich des sanften Öko- und Wissenschaftstourismus bilden dabei die Grundlage für die Expedition.“ (more…)

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„Die große Chance, die Arktis zu schützen, bevor sie zerstört wird“

Wie wirkt sich die Versauerung der Ozeane in 20, 40 oder gar 100 Jahren aus? Heute hat das GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel die Ergebnisse eines Experiments aus dem Jahr 2010 veröffentlicht – das Greenpeace mit einer Schiffstour in die Arktis unterstützt hat. Iris Menn, Meeresbiologin, erinnert sich im Interview an die Expedition.

Der zunehmende Ausstoß von Treibhausgasen macht nicht nur dem Klima zu schaffen. Unsere Meere nehmen CO2 aus der Atmosphäre auf, das sich im Wasser zu Kohlensäure wandelt. Steigender CO2-Ausstoß lässt auch die Aufnahme in das Meer steigen – das Wasser wird sauer. (more…)

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UW Nautilus Expedition May Have Spied New Species

A University of Washington research team has captured color photographs of what could be a previously undocumented species of chambered nautilus, a cephalopod mollusk often classified as a “living fossil,” in the waters off American Samoa in the South Pacific.

“This is certainly a new taxon, but we are not sure if it is a new species, subspecies or variety,” said UW paleontologist Peter Ward, who led the expedition to Samoa and Fiji.

“The Samoan nautiluses are large for the genus, brightly colored, and very, very rare,” he said. (more…)

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NASA/WHOI Voyage Set to Explore Link Between Sea Saltiness and Climate

A NASA-sponsored expedition is set to sail to the North Atlantic’s saltiest spot to get a detailed, 3-D picture of how salt content fluctuates in the ocean’s upper layers and how these variations are related to shifts in rainfall patterns around the planet.

The research voyage is part of a multi-year mission, dubbed the Salinity Processes in the Upper Ocean Regional Study (SPURS), which will deploy multiple instruments in different regions of the ocean. The new data also will help calibrate the salinity measurements NASA’s Aquarius instrument has been collecting from space since August 2011. (more…)

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A Prime Seat to a Once-in-a-Lifetime Spectacle

Hosted by world-renowned astrophotographer Adam Block at the UA’s Mount Lemmon SkyCenter, a group of sky and astronomy enthusiasts watched Venus cross the sun from the highest vantage point in Southern Arizona.

On Nov. 24, 1639, in the tiny village of Much Hoole not far from Liverpool, England, a poor farmer’s son and self-taught astronomer affixed a sheet of paper in front of a makeshift telescope pointed at the sun and waited.

Thirty-five minutes before sunset, a dark, round spot appeared right next to the bright disc that was the sun’s face projected on the paper, and made Jeremiah Horrocks, only 20 years old at the time, the first known human to predict, observe and record a transit – the passage of a planet across the sun as seen from Earth.

Almost 373 years later, a group of sky enthusiasts is gathered beneath the dome of one of the University of Arizona’s observatories on Mount Lemmon just north of Tucson, Ariz. (more…)

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Discovery of Historical Photos Sheds Light on Greenland Ice Loss

COLUMBUS, Ohio – A chance discovery of 80-year-old photo plates in a Danish basement is providing new insight into how Greenland glaciers are melting today.

Researchers at the National Survey and Cadastre of Denmark – that country’s federal agency responsible for surveys and mapping – had been storing the glass plates since explorer Knud Rasmussen’s expedition to the southeast coast of Greenland in the early 1930s.

In this week’s online edition of Nature Geoscience, Ohio State University researchers and colleagues in Denmark describe how they analyzed ice loss in the region by comparing the images on the plates to aerial photographs and satellite images taken from World War II to today. (more…)

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Scientists Look to Microbes to Unlock Earth’s Deep Secrets

*To find answers, oceanographers install observatories beneath remote seafloor*

Of all the habitable parts of our planet, one ecosystem still remains largely unexplored and unknown to science: the igneous ocean crust.

This rocky realm of hard volcanic lava exists beneath ocean sediments that lie at the bottom of much of the world’s oceans.

While scientists have estimated that microbes living in deep ocean sediments may represent as much as one-third of Earth’s total biomass, the habitable portion of the rocky ocean crust may be 10 times as great. (more…)

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