139 posts · 114,001 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
- 3,868 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
- May 21, 2009
- 02:56 PM
- 1,657 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
- February 11, 2009
- 09:55 PM
- 1,607 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
- March 30, 2009
- 12:15 AM
- 1,532 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 20, 2010
- 12:00 PM
- 1,408 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:/
- April 3, 2009
- 07:47 AM
- 1,386 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
- April 13, 2009
- 09:50 PM
- 1,370 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 23, 2009
- 06:25 PM
- 1,337 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
- May 21, 2009
- 11:57 PM
- 1,280 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
- April 23, 2009
- 10:00 AM
- 1,258 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 8, 2009
- 09:20 AM
- 1,250 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
- March 22, 2010
- 12:00 PM
- 1,190 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/
- December 15, 2010
- 11:31 PM
- 1,173 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
- March 12, 2009
- 09:52 PM
- 1,163 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
- April 21, 2009
- 11:33 AM
- 1,139 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
- February 19, 2009
- 09:29 AM
- 1,131 views
Seamount Life Is Unique Just Not In the Way We Thought
by Dr. M in Deep Sea News
About a month ago, I published my first paper at PLoS One. I believed an open access journal was the most appropriate place for the work so the group’s findings would be accessible to the public, scientists, conservationists, and policy makers. I am delighted to say that this work, and the major finding of connectedness [...]... Read more »
Craig R. McClain, Lonny Lundsten, Micki Ream, James Barry, & Andrew DeVogelaere. (2009) Endemicity, Biogeography, Composition, and Community Structure On a Northeast Pacific Seamount. PLoS ONE, 4(1). DOI: 10.1371/journal.pone.0004141
- March 25, 2009
- 11:10 AM
- 1,131 views
Deep-corals are world’s oldest animal
by Peter Etnoyer in Deep Sea News
It hasn’t been too long since Brendan Roark first reported that deep-sea corals off Hawaii are clocking in as the world’s oldest animal. At four thousand years old, the Leiopathes sp. black corals beat the quahog clams, which live to be four hundred, and they beat the tortoise Jonathon, who’s 176. Of course, these deep-sea [...]... Read more »
Roark, E., Guilderson, T., Dunbar, R., Fallon, S., & Mucciarone, D. (2009) Extreme longevity in proteinaceous deep-sea corals. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.0810875106
Noé, S., & Dullo, W. (2006) Skeletal morphogenesis and growth mode of modern and fossil deep-water isidid gorgonians (Octocorallia) in the West Pacific (New Zealand and Sea of Okhotsk). Coral Reefs, 25(3), 303-320. DOI: 10.1007/s00338-006-0095-8
Roark, E., Guilderson, T.P., Flood-Page, S., Dunbar, R.B., Ingram, B.L., Fallon, S.J., & McCulloch, M. (2005) Radiocarbon-based ages and growth rates of bamboo corals from the Gulf of Alaska. Geophysical Research Letters, 32(4). DOI: 10.1029/2004GL021919
- February 9, 2010
- 10:32 PM
- 1,123 views
LSDG: An Acronym Consuming A Field
by Dr. M in Deep Sea News
You may never heard of LSDG (although some of you may have heard of LSD but I make no judgement here) but a lot scientific thought and time is spent contemplating it. In fact Google Scholar returns 113,000 published papers on the subject. Why are there millions of pages dedicated to this subject? Because it [...]... Read more »
Rex, M., Stuart, C., Hessler, R., Allen, J., Sanders, H., & Wilson, G. (1993) Global-scale latitudinal patterns of species diversity in the deep-sea benthos. Nature, 365(6447), 636-639. DOI: 10.1038/365636a0
Hillebrand, H. (2004) On the Generality of the Latitudinal Diversity Gradient. The American Naturalist, 163(2), 192-211. DOI: 10.1086/381004
Yasuhara, M., Hunt, G., Cronin, T., & Okahashi, H. (2009) Temporal latitudinal-gradient dynamics and tropical instability of deep-sea species diversity. Proceedings of the National Academy of Sciences, 106(51), 21717-21720. DOI: 10.1073/pnas.0910935106
- June 3, 2009
- 09:00 AM
- 1,116 views
Reflections on the Johnson Sea-link: Dr. Cordes
by Peter Etnoyer in Deep Sea News
Dr. Erik Cordes is an Assistant Professor at Temple University specializing in the ecology of cold-seep and deep coral communities. He was Chief Scientist on the MMS sponsored Lophelia II cruise in Gulf of Mexico 2008 aboard the RV Nancy Foster, and he will lead this summer’s expedition with the Jason ROV aboard the NOAA [...]... Read more »
CORDES, E., BERGQUIST, D., PREDMORE, B., JONES, C., DEINES, P., TELESNICKI, G., & FISHER, C. (2006) Alternate unstable states: Convergent paths of succession in hydrocarbon-seep tubeworm-associated communities. Journal of Experimental Marine Biology and Ecology, 339(2), 159-176. DOI: 10.1016/j.jembe.2006.07.017
- October 28, 2009
- 12:22 AM
- 1,090 views
(Sieve) Size Matters
by Kevin Zelnio in Deep Sea News
Enter the sieve. It is a marine biologists best friend, saving hours of sorting and enabling quantification of fauna. In fact you can get these miracle workers at McMaster-Carr for a mere $40-50. You take good care of these puppies and they will last several graduate student’s lifetimes! I prefer the 500 micron mesh size [...]... Read more »
Gage, J., Hughes, D., & Gonzalez Vecino, J. (2002) Sieve size influence in estimating biomass, abundance and diversity in samples of deep-sea macrobenthos. Marine Ecology Progress Series, 97-107. DOI: 10.3354/meps225097
Breea Govenar, Derk C. Bergquist, Istvan A. Urcyuo, James T. Eckner, & Charles R. Fisher. (2002) Three Ridgeia piscesae assemblages from a single Juan de Fuca sulphide edifice: structurally different and functionally similar. Cahiers Biologie Marine , 247-252. info:/
Pavithran, S., Ingole, B., Nanajkar, M., & Goltekar, R. (2009) Importance of sieve size in deep-sea macrobenthic studies. Marine Biology Research, 5(4), 391-398. DOI: 10.1080/17451000802441285
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