139 posts · 131,456 views
Reporting on the world's largest environment - the deep-sea.
Kevin Zelnio
35 posts
Rick MacPherson
2 posts
Miriam
4 posts
Peter Etnoyer
15 posts
Dr. M
62 posts
Alistair Dove
5 posts
Holly Bik
13 posts
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- June 7, 2010
- 02:17 PM
- 3,906 views
What in Darwin’s Name Are Chaetognaths?!
by Kevin Zelnio in Deep Sea News
Lynn Margulis classified the Chaetognaths, known as arrow worms, as deuterostomes. Deuterostomy is characterized by several developmental characteristics including radial, indeterminate cleavage, a posterior position of the blastopore (deuterostomy=”second mouth”), enterocoelous coelom formation and a tripartite adult body plan . . . → Read More: What in Darwin’s Name Are Chaetognaths?!... Read more »
Ball, E., & Miller, D. (2006) Phylogeny: The Continuing Classificatory Conundrum of Chaetognaths. Current Biology, 16(15). DOI: 10.1016/j.cub.2006.07.006
Chen, J.-Y., & Huang, D.-Y. (2002) A Possible Lower Cambrian Chaetognath (Arrow Worm). Science, 298(5591), 187-187. DOI: 10.1126/science.1075059
Marlétaz, F., Martin, E., Perez, Y., Papillon, D., Caubit, X., Lowe, C., Freeman, B., Fasano, L., Dossat, C., & Wincker, P. (2006) Chaetognath phylogenomics: a protostome with deuterostome-like development. Current Biology, 16(15). DOI: 10.1016/j.cub.2006.07.016
- February 11, 2009
- 09:55 PM
- 1,867 views
Dumping Stuff In The Deep Will Solve All Our Problems
by Dr. M in Deep Sea News
Mention any carbon sequestration scheme and inevitably someone’s original idea is to dump it into the deep. All these plans share 1)an out -of-site out-of-mind attitude and 2) ignorance about processes in the deep. So pardon me if I don’t get too excited about the new scheme to save us all.
Rick and Miriam have beat [...]... Read more »
Stuart E. Strand, Gregory Benford. (2009) Ocean Sequestration of Crop Residue Carbon: Recycling Fossil Fuel Carbon Back to Deep Sediments. Environmental Science , 43(4), 1000-1007. DOI: http://pubs.acs.org/doi/full/10.1021/es8015556?cookieSet
- May 21, 2009
- 02:56 PM
- 1,865 views
Do Vent Crabs Do It Under the Gyre?
by Kevin Zelnio in Deep Sea News
Vent crabs live in the dark depths of the ocean. Previous studies have shown that the vent crab Bythograea thermydron has a reproductive cycle synchronized with Spring and Summer phytoplankton blooms 2.5 km above the East Pacific Rise. It was hypothesized that female crabs moved away from the toxic vents, once impregnated, to raise their [...]... Read more »
Hilário, A., Vilar, S., Cunha, M., & Tyler, P. (2009) Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge. Marine Ecology Progress Series, 153-160. DOI: 10.3354/meps07858
McKitrick, M. (1993) Phylogenetic Constraint in Evolutionary Theory: Has It Any Explanatory Power?. Annual Review of Ecology and Systematics, 24(1), 307-330. DOI: 10.1146/annurev.es.24.110193.001515
- March 30, 2009
- 12:15 AM
- 1,666 views
Fishing trophies, back in the day
by Peter Etnoyer in Deep Sea News
What better way to get at the question of recreational fishing impacts to ocean wildlife than to study historical pictures of the day’s catch on the docks at Key West, Florida? The American island paradise is legendary, frequented by Ernest Hemingway and other huntsmen since the early 1950’s.
Trends in the size and types of trophy [...]... Read more »
McCLENACHAN, L. (2009) Documenting Loss of Large Trophy Fish from the Florida Keys with Historical Photographs. Conservation Biology. DOI: 10.1111/j.1523-1739.2008.01152.x
- April 13, 2009
- 09:50 PM
- 1,654 views
Thriving In Extreme Conditions
by Dr. M in Deep Sea News
…takes more than a Red Bull. You got to have the right metabolic pathways. NSF highlights the work of Samantha Joye of the University of Georgia who studies how microbes survive and thrive in a deep, dark, noxious, oxygen-depleted, super-salty ecosystems that may be like the primordial ooze that life originated from. This work culminated [...]... Read more »
Joye, S., Samarkin, V., Orcutt, B., MacDonald, I., Hinrichs, K., Elvert, M., Teske, A., Lloyd, K., Lever, M., Montoya, J.... (2009) Metabolic variability in seafloor brines revealed by carbon and sulphur dynamics. Nature Geoscience. DOI: 10.1038/ngeo475
- March 22, 2010
- 12:00 PM
- 1,526 views
Dispatches from Antarctica – Farewell Weddell Sea
by Kevin Zelnio in Deep Sea News
David Honig is a graduate student in marine science at Duke University in the lab of Dr. Cindy Van Dover. He is participating in LARISSA, a 2 month multinational expedition to study the causes and consequences of the ice shelf collapse. He will be posting regular updates on the expedition exclusively for [...]... Read more »
Domack, E., Ishman, S., Leventer, A., Sylva, S., Willmott, V., & Huber, B. (2005) A Chemotrophic Ecosystem Found Beneath Antarctic Ice Shelf. Eos, Transactions American Geophysical Union, 86(29), 269-276. DOI: 10.1029/2005EO290001
H. Niemann1, D. Fischer, D. Graffe, K. Knittel1, A. Montie, O. Heilmayer, K. Nöthen, T. Pape, S. Kasten, G. Bohrmann.... (2009) Biogeochemistry of a low-activity cold seep in the Larsen B area, western Weddell Sea, Antarctica. Biogeosciences Discussions, 2383-2395. info:other/
- April 3, 2009
- 07:47 AM
- 1,489 views
Friday Deep-sea Picture: Sea cucumber stampede
by Peter Etnoyer in Deep Sea News
Boggling bioturbators, Batman. It’s a wild herd of holothurians. Run for yur lives! Elasipodid holothurians are a dominant component of the mobile invertebrate megafauna on the Porcupine Abyssal Plain, northeast Atlantic. They occur in high densities over large areas (Smith et al. 1997).
Yes, but, where are they going? They’re up to something, for sure, never [...]... Read more »
SMITH, A., MATTHIOPOULOS, J., & PRIEDE, I. (1997) Areal coverage of the ocean floor by the deep-sea elasipodid holothurian Oneirophanta mutabilis: estimates using systematic, random and directional search strategy simulations. Deep Sea Research Part I: Oceanographic Research Papers, 44(3), 477-486. DOI: 10.1016/S0967-0637(96)00112-4
- December 15, 2010
- 11:31 PM
- 1,475 views
I Like Sills But Not A Fan Of The Popular Or My Friend’s Ex
by Dr. M in Deep Sea News
I’m a contrarian. Majority consensus makes me shudder. I just like rooting for underdogs*. Those undersea ridges at the boundaries of tectonic plates, spewing molten magma to form new crust are o’ so popular these days.
Spreading plate boundaries…meh. What I do like is new research basically stating, and I am paraphrasing here, that spreading plate boundaries . . . → Read More: I Like Sills But Not A Fan Of The Popular Or My Friend’s Ex... Read more »
Lizarralde, D., Soule, S., Seewald, J., & Proskurowski, G. (2010) Carbon release by off-axis magmatism in a young sedimented spreading centre. Nature Geoscience. DOI: 10.1038/NGEO1006
- April 20, 2010
- 12:00 PM
- 1,469 views
Guest Post: The Largest Habitats on Earth
by Kevin Zelnio in Deep Sea News
Peter Etnoyer is a deep sea coral habitat specialist with NOAA’s National Center for Coastal Ocean Science (NCCOS) in Charleston, SC. He returns to Deep Sea News to deliver this important report on an exciting new development in deep sea science. The journal Oceanography published a new full-color thematic issue [...]... Read more »
Etnoyer, Peter J., Wood, J., & Shirley, T.C. (2010) How large is the Seamount Biome?. Oceanography, 23(1), 206-209. info:other/
Staudigel, H., Koppers, A.A.P., Lavelle, J.W., Pitcher, T.J., & Shank, T.M. (2010) Defining the word ‘Seamount’. Oceanography, 23(1), 20-21. info:/
- March 23, 2009
- 06:25 PM
- 1,423 views
100 Word Post: Hurdia victoria
by Dr. M in Deep Sea News
Anomalocaris ruled the Cambrian seas but apparently so did a one and half meter cousin. Hurdia victoria, originally described in 1912, was known from just a jumble of crustacean-like pieces. An examination of new fossils, plus a few old ones, suggest a body architecture similar to the anomalocaridids including a segmented body with [...]... Read more »
Daley, A., Budd, G., Caron, J., Edgecombe, G., & Collins, D. (2009) The Burgess Shale Anomalocaridid Hurdia and Its Significance for Early Euarthropod Evolution. Science, 323(5921), 1597-1600. DOI: 10.1126/science.1169514
- February 24, 2011
- 08:13 PM
- 1,403 views
Tide Pool: Cephalopods, Ash, and Sulphur Are to Blame
by Dr. M in Deep Sea News
An occasional series where we briefly report 3 new studies and tell you why they are cool!
Heightened biodiversity may make an ecosystem more stabile and robust. One of the reasons for this is that high biodiversity may create redundant species, i.e. species that serve a similar ecological role in the ecosystem. A loss of one species may not perturb . . . → Read More: Tide Pool: Cephalopods, Ash, and Sulphur Are to Blame... Read more »
Whiteside, J., & Ward, P. (2011) Ammonoid diversity and disparity track episodes of chaotic carbon cycling during the early Mesozoic. Geology, 39(2), 99-102. DOI: 10.1130/G31401.1
Gill, B., Lyons, T., Young, S., Kump, L., Knoll, A., & Saltzman, M. (2011) Geochemical evidence for widespread euxinia in the Later Cambrian ocean. Nature, 469(7328), 80-83. DOI: 10.1038/nature09700
Grasby, S., Sanei, H., & Beauchamp, B. (2011) Catastrophic dispersion of coal fly ash into oceans during the latest Permian extinction. Nature Geoscience, 4(2), 104-107. DOI: 10.1038/ngeo1069
- April 23, 2009
- 10:00 AM
- 1,372 views
Gigantothermy: Size Matters
by Peter Etnoyer in Deep Sea News
by Bryan Wallace for Deep Sea News
When you think of cold marine environments, you probably think of blubber-wrapped seals, whales, and walruses, big, furry bears, or a huddled mass of penguins. What do those animals have in common? They are endotherms, their body temperature maintenance depends on consistently high levels of heat generated (and retained) [...]... Read more »
WALLACE, B., & JONES, T. (2008) What makes marine turtles go: A review of metabolic rates and their consequences. Journal of Experimental Marine Biology and Ecology. DOI: 10.1016/j.jembe.2007.12.023
- May 21, 2009
- 11:57 PM
- 1,372 views
Trilobites Ride the Crazy Train
by Kevin Zelnio in Deep Sea News
A new paper published recently in the journal Geology reports on peculiar conga party lines of our paleo-friend, the Trilobite. Gutierrez-Marco and colleagues discovered a quarry replete with marine invertebrate fossil, including potentially some of the largest trilobite specimens ever found. Curiously though, these capricious little critters were found exhibiting some rather gregarious behavior! They [...]... Read more »
Gutierrez-Marco, J., Sa, A., Garcia-Bellido, D., Rabano, I., & Valerio, M. (2009) Giant trilobites and trilobite clusters from the Ordovician of Portugal. Geology, 37(5), 443-446. DOI: 10.1130/G25513A.1
- August 30, 2010
- 03:30 PM
- 1,364 views
Yicaris – Progenitor of the Crustacea
by Kevin Zelnio in Deep Sea News
Finding any new fossil is rare. Finding invertebrate fossils is made even more rare because of the squishy nature of most invertebrates. Sometimes the wandering paleontologist, toiling away with utmost care through dust and debris, can find parts of squishy invertebrates like scolodonts (polychaete jaws), coral rubble, carbonate shell cement, or maybe sea star or sponge . . . → Read More: Yicaris – Progenitor of the Crustacea... Read more »
Zhang, X., Siveter, D., Waloszek, D., & Maas, A. (2007) An epipodite-bearing crown-group crustacean from the Lower Cambrian. Nature, 449(7162), 595-598. DOI: 10.1038/nature06138
- May 8, 2009
- 09:20 AM
- 1,341 views
Friday Deep-sea Picture: Basking Shark
by Peter Etnoyer in Deep Sea News
Basking sharks can measure 35 feet or longer, are known to live in temperate waters around the world, but their wintering grounds were unknown until very recently. Discovery News reports that satellite tags placed by Greg Skomal of Massachusetts Marine Fisheries are bringing new revelations about these mysterious animals. Five basking sharks swam more than [...]... Read more »
Gregory B. Skomal, Stephen I. Zeeman, John H. Chisholm, Erin L. Summers, Harvey J. Walsh, Kelton W. McMahon, & Simon R. Thorrold. (2009) Transequatorial Migrations by Basking Sharks in the Western Atlantic Ocean. Current Biology. DOI: 10.1016/j.cub.2009.04.019
- January 21, 2011
- 09:33 AM
- 1,335 views
Scientist In Residence: Danny Richter on Diatoms and X-ray Whosamagidgets
by Dr. M in Deep Sea News
In a recent paper, de Jonge et al used x-ray fluorescence tomography to give us a new perspective on how diatoms put together those phenomenally intricate frustules of theirs. “X-ray whosamagidget” you say? My thoughts exactly. Let’s break it down. First: X-rays. High-energy waves that help doctors see our bones. Check. Second: fluorescence. Fluorescence is light . . . → Read More: Scientist In Residence: Danny Richter on Diatoms and X-ray Whosamagidgets... Read more »
de Jonge, M., Holzner, C., Baines, S., Twining, B., Ignatyev, K., Diaz, J., Howard, D., Legnini, D., Miceli, A., McNulty, I.... (2010) Quantitative 3D elemental microtomography of Cyclotella meneghiniana at 400-nm resolution. Proceedings of the National Academy of Sciences, 107(36), 15676-15680. DOI: 10.1073/pnas.1001469107
- July 15, 2010
- 02:05 PM
- 1,322 views
Determining the Fate of Carbon in a Mixotrophic Anemone
by Kevin Zelnio in Deep Sea News
It has been known for a long time that some anemones form symbiotic relationships with Zooxanthellae. For a while it was assumed that the anemones mainly persisted by utilizing carbon translocated from its symbionts, called autotrophy, but they can may supplement this by heterotrophic feeding on plankton. A study by . . . → Read More: Determining the Fate of Carbon in a Mixotrophic Anemone... Read more »
BACHAR, A., ACHITUV, Y., PASTERNAK, Z., & DUBINSKY, Z. (2007) Autotrophy versus heterotrophy: The origin of carbon determines its fate in a symbiotic sea anemone. Journal of Experimental Marine Biology and Ecology, 349(2), 295-298. DOI: 10.1016/j.jembe.2007.05.030
- April 21, 2009
- 11:33 AM
- 1,268 views
Deep-diving adaptations of Leatherback turtles
by Peter Etnoyer in Deep Sea News
An article by Bryan Wallace for Deep Sea News.
The deep-sea is as far removed from atmospheric oxygen as anyplace on Earth, but a select few air breathers are undeterred. (No, I’m not referring to intrepid deep-sea human researchers.) These extraordinary critters frequently venture into the deep-sea, despite their vital link to air the above the [...]... Read more »
Doyle, T., Houghton, J., OSúilleabháin, P., Hobson, V., Marnell, F., Davenport, J., & Hays, G. (2008) Leatherback turtles satellite-tagged in European waters. Endangered Species Research, 23-31. DOI: 10.3354/esr00076
Houghton, J., Doyle, T., Davenport, J., Wilson, R., & Hays, G. (2008) The role of infrequent and extraordinary deep dives in leatherback turtles (Dermochelys coriacea). Journal of Experimental Biology, 211(16), 2566-2575. DOI: 10.1242/jeb.020065
James, M., Myers, R., & Ottensmeyer, C. (2005) Behaviour of leatherback sea turtles, Dermochelys coriacea, during the migratory cycle. Proceedings of the Royal Society B: Biological Sciences, 272(1572), 1547-1555. DOI: 10.1098/rspb.2005.3110
- October 16, 2009
- 12:20 PM
- 1,259 views
Friday Freak 10/16/09 – Gersemia juliepackardae
by Kevin Zelnio in Deep Sea News
TGIF IS DEAD LONG LIVE TGIF!
Craig and I are making some changes around these parts. You’ll notice them soon enough. One change starts now. We are getting rid of one of our longest running and most successful (not very) commerical franchises. We are disbanding the traditional Friday Deep Sea Pic and TGIF. We will [...]... Read more »
G.C. Williams, & L. Lundsten. (2009) The nephtheid soft coral genus Gersemia Marenzeller, 1878, with the description of a new species from the northeast Pacific and a review of two additional species (Octocorallia: Alcyonacea). Zool. Med. Leiden, 83(34), 1067-1081. info:other/
- March 12, 2009
- 09:52 PM
- 1,247 views
Warfare Ecology
by Dr. M in Deep Sea News
Six months ago in the yesteryear of 2008, Machlis and Hanson outlined in Bioscience a new subfield of study titled warfare ecology. As the authors state “among human activities causing ecological change, ware is both intensive and far-reaching. Yet environmental research related to warfare is limited in depth and fragmented by discipline.” The paper is [...]... Read more »
Machlis, G., & Hanson, T. (2008) Warfare Ecology. BioScience, 58(8), 729. DOI: 10.1641/B580809
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