746 reputation
215
bio website sites.google.com/site/…
location Urbana, IL
age
visits member for 2 years, 10 months
seen Aug 26 at 3:24

To support my research on ecosystem functioning, my collaborators and I are developing PEcAn, a model-data synthesis framework (www.pecanproject.org) and BETYdb, its underlying database (www.betydb.org).

Source Code:


May
3
comment Does the use of “var”, “x”, and/or “ssp” in a scientific name provide specific information?
thank you for taking the time to do so.
May
2
comment How do plants intake minerals through their leaves?
A nice review by Wocjik (2004)
May
2
comment Does the use of “var”, “x”, and/or “ssp” in a scientific name provide specific information?
I don't dislike your answer, and the recent changes did provide additional information, but it doesn't answer my questions, For example: is the term varietal used only for cultivated plants? i.e. does use of "var" indicate that a species has been cultivated? Also, is there meaning to the different uses of "x", e.g. "Genus x species" vs "Genus species x otherspecies" vs "Genus xspecies"? Finally, is there a biological definition of 'subspecies' - e.g. can subspecies interbreed? Does subspecies have a consistent biological definition, or is it just used to describe distinct populations?
Apr
29
comment Why is 'Grudger' an evolutionary stable strategy?
great question. I hope one or all answers address group selection. Which I don't think was widely accepted at the time that the selfish gene was published.
Apr
26
comment Does the use of “var”, “x”, and/or “ssp” in a scientific name provide specific information?
are there definitions of "var.", "ssp", and "x" available? are they used consistently in the ICZN approved list of plant names?
Apr
26
comment Does the use of “var”, “x”, and/or “ssp” in a scientific name provide specific information?
I know what words are being abbreviated, and what they generally mean. I am wondering if the uses have clear definitions and consistent use
Apr
25
revised Does the use of “var”, “x”, and/or “ssp” in a scientific name provide specific information?
edited title
Apr
25
asked Does the use of “var”, “x”, and/or “ssp” in a scientific name provide specific information?
Apr
24
comment Effects of beer on muscle recovery after exercise
The reference is not relevant - the title says "acute" but the question refers to "even just one beer"
Apr
11
comment Why do plants have green leaves and not red?
@TobiasKienzler green leaves stay cool via transpiration, not because they efficiently use solar radiation.
Apr
8
comment Why do plants have green leaves and not red?
If leaves were black, they would get too hot.
Apr
8
comment How will rising carbon dioxide levels in the troposphere affect photosynthetic producers?
+1 the network of FACE sites answers this exact question comprehensively. Still, providing referenced in std format rather than links would make the answer more useful.
Apr
7
comment Why do the sick and unhealthy trees leaf out first in spring?
Can you be more specific than "I have kept careful track of it"? Have you kept records? How do you quantify tree health? How many trees? Are they all approximately the same size? Do they grow in similar soil and light environments?
Apr
5
awarded  Scholar
Apr
5
accepted Is there a standard format for plant community composition data?
Apr
4
comment Why do the sick and unhealthy trees leaf out first in spring?
Be cautious about drawing conclusions from casual observation. There may be within-species variability in the timing of leaf-out. It is possible that trees that leaf out first are more likely to be infected (or to have been infected in previous years).
Apr
4
comment Why do the sick and unhealthy trees leaf out first in spring?
-1 for use of the ambiguous (and unscientific) term "trashy trees"
Apr
3
awarded  Quorum
Apr
3
awarded  Commentator
Apr
3
comment Why do some fruits have a much wider range of acceptable sizes than others?
@chm maybe a good answer could address "R vs K selected species"