My activity
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Jon Norenburg commented on "Does species A interact with more organisms than species B? Are the organisms in ecosystem A more interconnected than organisms in ecosystem B?":
Need to define "interaction" and probably break it down to categories that people would select - e.g., predator-prey, parasite-host (this exists), commensal (various), habitat...
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Jon Norenburg commented on "How many unknown (not yet described) species there are in world's biological collections?":
But most unnamed species in collections are not imaged. That needs to be solved first. After that, I'm not convinced that this comparison of images will be effective.
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Jon Norenburg commented on "Do the number of descriptions of taxa, at verious ranks, follow a mathematical curve? As in species per genus, per family? Are recently described taxa following a curve more closely?":
EoL may eventually be a good source for this information but for years to come this information could be gathered much more efficiently from databased sources.
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Jon Norenburg commented on "What are the requirements for, and the limitations to, the existence of life forms?":
I'm not daunted by this. We already know some of the answers from extremophiles. Seems to me this is more interesting and relevant at focused clade levels.
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Jon Norenburg commented on "Did phytophagous insects evolve after plants? What decides whether a species is monophagous or polyphagous?":
I don't see how EoL data would get at this.
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Jon Norenburg commented on "Approximately how many coral reef associated marine invertebrate species are widespread across the tropical Indo-Pacific?":
For many of the difficult invertebrate phyla most of the species are known only from the type locality, often from single specimens. In many cases it seems to be because we haven't looked elsewhere adequately, but reconciling old species descriptions with newly collected material can be very difficult as well. This wish is one reason why I want to switch to Scratchpads, so I can start collecting specimen-based data and have it available for others to use.
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Jon Norenburg commented on "What is the distribution of the ability to regenerate lost body parts across animal phyla?":
This is a great idea! Naturally, I'm totally biased, because some nemerteans are among the best regenerators out there.
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Jon Norenburg commented on an older version of Image of :
cf australiensis Sunberg, Gibson & Olsson, 2003
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Jon Norenburg commented on an older version of Red ribbon worm (Nemertea):
Possibly a Palaeonemertea.
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Jon Norenburg commented on an older version of Red ribbon worm (Nemertea):
Probably Cerebratulus sp.
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Jon Norenburg commented on an older version of Whelks gathering around a ribbon worm:
Correct spelling: Cerebratulus sp.
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Jon Norenburg commented on an older version of Whelks gathering around a ribbon worm:
Cerbratulus sp
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Jon Norenburg commented on an older version of Image of :
Micrura cf. callima Sundberg and Gibson, 1995
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Jon Norenburg commented on an older version of Image of :
Balionemertes cf australiensis Sunberg, Gibson & Olsson, 2003
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Jon Norenburg commented on an older version of Brief Summary:
Cyndy, coming. I am finally getting my feet wet here.
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Jon Norenburg commented on an older version of Brief Summary:
Terrestrial nemerteans generally live in moist conditions, such as moss, leaf litter, and crevices, in tropical to temperate high-humidity habitats.
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Jon Norenburg commented on an older version of Brief Summary:
They do feed primarily "on other invertebrates," but these need not be small, and our best guess is that most of the members of the Hoplonemertea (currently the second largest group of nemerteans) feed on crustaceans. Many nemerteans will consume (or attempt to do so) animals that are several times their own mass or natural body diameter. We have data (mostly anecdotal) for only a few tens of species for actual food preferences, and these range from species specific to omnivorous.
