Alkanes are major constituents of crude oil and are released to the marine environment by natural seepage and from anthropogenic sources. Due to their chemical inertness, their removal from anoxic marine sediments is primarily controlled by the activity of anaerobic alkane-degrading microorganisms. To facilitate comprehensive cultivation-independent surveys of the diversity and distribution of ...

After up to 30 million years of splendid isolation due its extreme climate, circumpolar currents and sea ice, Antarctica is now exposed man-made threats, including the import invasive species meltdown ice shield. Michael Gross reports.

1 Fisheries Ecology Research Laboratory, Department of Biology, University of Hawai‘i, Honolulu, Hawai‘i, United States of America 2 Delaney Aquatic Consulting LLC, Honolulu, Hawai‘i, United States of America 3 Center for Oceans, Conservation International, Honolulu, Hawai‘i, United States of America 4 Department of Environment and Agriculture, Curtin University, Perth, Australia 5 Division of ...

Mass mortality events of benthic invertebrates in the Mediterranean Sea are becoming an increasing concern with catastrophic effects on the coastal marine environment. Sea surface temperature anomalies leading to physiological stress, starvation and microbial infections were identified as major factors triggering animal mortality. However the highest occurrence of mortality episodes in particul...

We map and analyse the Human Footprint Index at 1 km scale for 1834 terrestrial Nature Reserves of mainland China. There are fewer, larger, more pristine reserves in the colder, drier, less densely-populated pastoral areas of the north and west; and more numerous, smaller, more heavily modified reserves in the warmer, wetter, more densely populated arable agricultural areas of the south and eas...

Decapoda Crustacea molt in order to grow; some species, such as the Dungeness crab Cancer magister, achieve a very large size. Does sensory neuron hyperplasia in internal proprioceptors accompany this growth? To determine this, neurons in propodite-dactylopodite (PD) chordotonal organs were counted in first walking legs of juvenile (5th through 9th instar) and adult (10th through 13th instar) C...

This study compared the responses of Pd-functionalized and pristine titanate (TiO2) nanotube arrays to ethanol with those to acetone to determine the effects of functionalization of TiO2 nanotubes with Pd nanoparticles on the sensitivity and selectivity. The responses of pristine and Pd-functionalized TiO2 nanotube arrays to ethanol gas at 200 °C were ~2877% and ~21,253%, respectively. On the o...