Hello
I think that the interesting debate generated by the issue of "evolutionary progress" is exactly why it's a good topic for this panel. It makes people think carefully about definitions and the processes. I also think that Chris Edge just hit the nail on the head about our misuse of the word "progress." "Progress" or "advancement" suggests teleology, which has been largely rejected by evolutionary biologists.

One of the reasons why we stumble over the question, "Do organisms advance over time?" is that we confuse complexity with progress. Yes, on average, organisms become more complex over time, because the process of evolution is the accumulation of changes in traits of individuals in populations over time. Although losses are part of this process, gains are added on top of previous gains, resulting in more complexity (especially in the multi-celled organisms that more frequently catch our eye).

Is complexity progress? As humans, our intuition tell us, "yes" because we like shiny complex things (perception bias, perhaps?). If we are handed two tablets, one that is a chalkboard and one that is an iPad, we know which one we think is better. But when the flood comes, which one is still functional afterwards? Adaptation results in organisms fitting their environment better, but the more adapted we are to a particular environment, the less flexible we are to change. In a large time scale, flexibility should trump complexity. Sometimes more complex things are better able to adjust to changes in the environment, sometimes they aren't. In a "stable" environment (if it exists) what organism is best able to survive and reproduce may be complex or may be simple.

What is "better" is largely subjective- is it complexity, adaptation (resistant microbes!), size (currently, blue whales!), intelligence (humans!), ability to produce the most offspring and biomass possible (fungi!), ability to persist relatively unchanged across epochs (sponges!)... ?

As an interrelated topic (the previous one is mostly evolutionary, with ecology included as part of the process of adaptation), it might be fun to include the changing ideas of forest succession (getting back to the issue of "Do communities evolve?"). Previously, it was thought that forest communities progressed towards climax stages, but now we realize how patchwork, stochastic, and cyclical this process is.

Rachel Bolus
Ph.D. Candidate
Organismic & Evolutionary Biology
University of Massachusetts Amherst

On 12/6/2012 10:03 AM, Chris B. Edge wrote:
Hello all,
I have spent some time thinking about this topic over the last several
years. As a relatively 'green' evolutionary ecologist I rarely enter these
debates in public forums.
My opinion's are heavily influenced by Jared Diamond's writing on the
topic. In not as eloquent words 'progress' implies that there is a goal or
target that evolution is moving towards. Of course we can define the goal
or target post hoc, complexity, invasion of terrestrial habitats, etc. and
conclude that evolution has made progress. However non of these
goals/targets apply to all organisms or habitats, and non of them can be
defined a priori.
'Progress' may capture the essence of the message we want to get across it
is not a good word to use to describe major evolutionary trajectories
unless the statement it is used in also includes the axis or scale progress
is to be measured on. Instead major trajectories should be described as
they are, observed trajectories/trends. For example, consider these two
statements; 1) 'evolution has resulted in a trend of increasing
complexity', and 2) 'evolution has made progress towards increasing
complexity'. The two statements convey the same message, but statement 2
implies that complexity is always good. In my opinion statement 1 is much
better.
Regards,
Chris Edge

On Wed, Dec 5, 2012 at 11:40 PM, Wayne Tyson <landr...@cox.net> wrote:

Ecolog:

Pryde is right on. But the reality is that evolution is misunderstood by a
lot of people, and clarity on this subject would go a long way toward
resolving some of the conflict arising therefrom. That will require clear
statements from evolutionary biologists for starters, and perhaps a lot of
article-writing and TV production that not only is more careful about the
semantics used,* but actually getting the ball rolling toward rolling back
the misconceptions.

But first, you catch the rabbit--and even make the stew. Then serve it
until it is found delicious. (As long as it's not bushmeat.) That is, get
this matter thoroughly discussed by evolutionary biologists and others who
understand the merits and deficiencies of the two "sides," then "make it
news."

WT

*advancement, progress . . .
   ----- Original Message -----
   From: Liz Pryde
   To: Wayne Tyson
   Cc: ECOLOG-L@LISTSERV.UMD.EDU
   Sent: Wednesday, December 05, 2012 9:00 PM
   Subject: Re: [ECOLOG-L] Discussion Panel Topic Suggestions


   In Darwin's "Origin" the theory was one of adaptation, not advancement.
   Unfortunately Spencer coined the "fittest" remark and that was a popular
mode of thinking at the time - when people were rather self-congratulatory
about their scientific understandings of the natural world (how clever!).
   So, evolution was originally meant as an adaptation to the chance
environment. It may or may not have been 'better' than the previous model,
but it survived through chance, and we assume, advantage. This doesn't
necessarily make it advantageous throughout time.


   I'm sure we can all come up with improvements to the human body ;).
   Liz






   On 06/12/2012, at 2:47 PM, Wayne Tyson <landr...@cox.net> wrote:


     Joey and Ecolog

     I am the author of question 3, and the point is exactly the one made
by Smokey, with which I fully agree. There do seem to be people who seem to
be of the opinion that evolution IS progress, however. I posted this
question to a well-known evolutionary biology forum and Richard Dawkins
replied in the affirmative; when I asked for further clarification, there
was no response (except one which agreed with my point; several others were
outraged, and I ended up having to issue an "apology." David Attenborough,
in one of his excellent TV programs used the term "advance," in discussing
the matter with one of the world's top paleontologists, whom I emailed the
raw question; he responded in the affirmative, that the creatures he was
most famous for studying did "advance." When I responded by asking if he
would then conclude that the genus Homo would then be an example of
"evolutionary advance," the correspondence was terminated.

     My straw polling amongst "the public" tilts strongly in favor of
"progress" or "advancement" with time, and while I'm not sure of all the
sources that have contributed to this impression, the Time-Life book "Human
Evolution," with its famous/infamous "March of Progress" illustration
beginning with a quadruped ape and ending with an upright, apparently Aryan
male. I know of no studies that have been done on this issue, and
attempting to raise the discussion on respected websites causes more
blowback than the kind of clarity that Smokey's concise statement brings to
the discussion.

     Ecolog is a respected and large listserv. Will there be further
comments, either in support or in refutation of Smokey's explanation, or is
this subject one of those academic "third rails" that no one dare touch?
Those who fear posting their comments here could send Smokey and me their
comments directly if they want to avoid reprisals (the subject of reprisals
for posts reared its ugly head several months ago, and believe it or not,
the emails I received were not limited to students; I got several from
professors).

     On the other hand, if this subject is considered unimportant, "proper"
actions can be taken, eh?

     WT

     ----- Original Message ----- From: "Joey Smokey" <
northwestbird...@gmail.com>
     To: <ECOLOG-L@LISTSERV.UMD.EDU>
     Sent: Tuesday, December 04, 2012 1:51 PM
     Subject: Re: [ECOLOG-L] Discussion Panel Topic Suggestions



       Jason,

       I strongly advise against the third question. Evolution is not
directional,
       and the question is worded to suggest that it is. If the point of the
       question is to dispel the idea of evolution being directional, then
it
       would be fine.

       There are many common misconceptions of organisms "progressing"
through
       evolution. The most common is the typical classroom image of human
       evolution moving from ape-like toward human-like over time.
Transition
       species in the fossil record do not suggest a progressive change
from one
       type of body form into another. The transition to terrestrial life
is the
       same way; transition species such as Tiktaalik, Eusthenopteron, and
       Ichthyostega did not "march along" until they were well-adapted for
life on
       land. Evolution does not craft "improved" species or "advanced"
species. It
       simply results in organisms being well-adapted for their environment
at a
       given time.

       In regards to the fourth question, ecological time refers to
immediate
       interactions between organisms and their environment. It does lead
into
       evolutionary time and the change in allelic frequencies through
       generations. So, ecological interactions can and do have meaningful
impact
       on evolutionary trajectories of species.

       I think the first two questions will lead into some good discussion.

       Best of luck on your discussion panel,

       Joey Smokey
       WSU Vancouver


       On Tue, Dec 4, 2012 at 8:37 AM, jason.strickland <
       jason.strickl...@knights.ucf.edu> wrote:


         Dear group,

         I have compiled some of the ideas that were given to me about my
         discussion panel. The response was much lower than I expected so
if you
         have any ideas, feel free to share those as well. Thank you to all
those
         that contributed.


         1.       Will most organisms be capable of adapting quickly enough
to
         respond to climate change/sea level rise to be evolutionarily
relevant?

         2.       What impact will Genetically Modified Organisms have on
the
         ecology and evolution of the modified species and other species?

         3.       Do organisms progress/improve/advance through evolution?

         4.       Do ecological processes/interactions last long enough to
have any
         meaningful impact on the evolutionary trajectory of a species?

         Please share your thoughts on these topics or suggest others.

         Cheers,
         Jason Strickland
         jason.strickl...@knights.ucf.edu

         From: jason.strickland
         Sent: Tuesday, October 30, 2012 3:59 PM
         To: ECOLOG-L@LISTSERV.UMD.EDU
         Subject: Discussion Panel Topic Suggestions

         Dear group,

         I am currently working on forming a discussion panel that will
include two
         ecologists and two evolutionary biologists to discuss topics that
involve
         merging ecology and evolution. The discussion will be in front of
150-200
         students ranging from undergraduates to post-docs (all in
biology). The
         panel will happen on a Saturday morning so it needs to be an
exciting
         discussion to hold the audience's interest and cause them to ask
questions.

         I am looking for topics/questions that the two fields do not
completely
         agree on. The goal is to have the panel disagree on topics to
allow the
         students to learn and be entertained. If anyone can suggest topics
or
         questions that ecologists and evolutionary biologists have
different
         viewpoints on, they would be greatly appreciated. I have a few
topics
         already, but wanted to ask a larger audience to suggest topics to
determine
         if there are certain topics/questions that come up frequently.
Feel free to
         email me directly (jason.strickl...@knights.ucf.edu<mailto:
         jason.strickl...@knights.ucf.edu>) or respond to this post with
your
         suggestions.

         Thank you in advance for your help,

         Jason Strickland
         jason.strickl...@knights.ucf.edu<mailto:
jason.strickl...@knights.ucf.edu>




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   Liz Pryde
   PhD Candidate (off-campus @ The University of Melbourne)
   School of Earth and Environmental Sciences
   James Cook University, QLD

   elizabethpr...@gmail.com
   epr...@unimelb.edu.au






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--
Ph.D. Candidate
Organismic & Evolutionary Biology
University of Massachusetts Amherst
219 Morrill Science Center South
Amherst, MA 01003

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