Honorable Forum:
Re: "I think these general surveys are valuable, but they don't overtly
involve hypotheses and testing. However, it can and does include
assumptions/hypotheses; as one of the posters on the topic pointed out there
are always assumptions made. One doesn't walk every square inch of a site,
rather picks areas (from aerials, maps, knowledge, observations when out
there) places that are most likely to be different/interesting (have rare
things)." --Pat Swain (Monday, March 07, 2011 6:03 AM)
I don't want to appear to jump to conclusions, so I would be interested in
Swain's expansions upon this issue. I wonder if Pat would have funded a
survey which was based upon random sampling/mapping that would provide a
baseline dataset and provide another level of scrutiny of the
different/interesting as well as an opportunity to discover that which one's
present state of knowledge might otherwise overlook.
Please describe the theoretical foundation for "walking" the site rather
than randomly sampling it, and how one approaches gaining knowledge of a
site without a (statistically) valid inventory.
WT
----- Original Message -----
From: "Swain, Pat (FWE)" <pat.sw...@state.ma.us>
To: <ECOLOG-L@LISTSERV.UMD.EDU>
Sent: Monday, March 07, 2011 6:03 AM
Subject: Re: [ECOLOG-L] Hypothesis Testing in Ecology
Ecolog-L,
Way back when the question about hypothesis testing in ecology was first
posed to the group, one of the questions was whether anyone had rejected
projects or grant proposals for lack of hypotheses. The discussion has
gone on while I thought about posting a response to that, but with Jane
Shevtsov's prodding, I offer the following thoughts on hypothesis testing
and research.
For some years I was on a committee to review and select graduate student
research proposals for grant support for a regional botanical organization
at the same time that I was involved in evaluating proposals for small
contracts from my office which is focused on rare species and uncommon
natural communities in the state. (I stress the research grants vs.
contracts; and I am no longer on the committee which no doubt has
different biases from mine, and my office doesn't have money for small
contracts like we used to).
On the grad research committee, I was far more likely to approve proposals
for consideration if a hypothesis was stated, and I tended to veto
projects that didn't do that. For example, I think that pure survey of a
property for species (making a list of all the species of some taxonomic
group) encountered isn't research, but such a project can be developed and
proposed in ways that has research in it (effects of land use history,
recreation, management...). If a student wanted to inventory a property as
a research project, as someone funding grants I wanted the reasons given
for why that property is worth the effort and what will be done with the
results. I recall one otherwise quite good proposal I didn't consider
because it just said that the property was interesting and the nonprofit
owning it should know what was on it. I wanted to be shown what
assumptions are being made (those should be stated as hypotheses to be
tested in a proposal for a research grant), predictions!
of where differences might be and why and expectations that post
inventory analyses would be undertaken.
However, some of the projects that I rejected as not being research might
well have been fundable (I think some were) by my office where we want to
know what rare species are in particular places, and what is rare. We have
funded contracts for surveys for particular taxonomic groups in general as
well others focused on rare species/natural communities along rivers, on
particular properties, and so on. I think these general surveys are
valuable, but they don't overtly involve hypotheses and testing. However,
it can and does include assumptions/hypotheses; as one of the posters on
the topic pointed out there are always assumptions made. One doesn't walk
every square inch of a site, rather picks areas (from aerials, maps,
knowledge, observations when out there) places that are most likely to be
different/interesting (have rare things).
So my thinking back when I was on the grad research committee was that for
an inventory to be research and worth funding with a grant, the proposal
had to clearly state hypotheses to be tested, and better, to discuss (yes,
in only 2 pages) underlying assumptions going into the project. Maybe some
of what I was after was an overt awareness of the questions and
assumptions involved in setting up the project. And some idea of expected
analysis of the results.
My convoluted discussion summarizes to 'yes, I rejected proposals that
didn't have hypotheses stated'.
Pat
----------------------------------------------------------
Patricia Swain, Ph.D.
Community Ecologist
Natural Heritage & Endangered Species Program
Massachusetts Division of Fisheries & Wildlife
1 Rabbit Hill Road
Westborough, MA 01581
508-389-6352 fax 508-389-7891
http://www.nhesp.org
-----
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