Re: [ECOLOG-L] Used a tablet for field work?

2012-05-16 Thread Abraham de Alba A.
That is the central issue, to be able to see under clear skies (I work mostly in grasslands) I tryied an Ipak many years ago, it transparently could use excel worksheets, it was a pain to move in the small screen but doable. with no canopy you had to pull something overyou to actually see what

Re: [ECOLOG-L] Agriculture in a Steady State Economy

2010-10-10 Thread Abraham de Alba A.
Although I am not against "worldwatch" writings, I do Well said Matt, Although I am not against "worldwatch" writings, I do find them sometimes exceedingly general, is not that cows are not producing methane, I have not yet found any studies of "measurements" under grass-fed conditions (let

[ECOLOG-L] Fw: [ECOLOG-L] worlds authorities in sustainable ag/meat/ag ecology

2010-06-27 Thread Abraham de Alba A.
David Pimentel comes to mind, and I would strongly recommend to include some of the "heroes" of carbon farmers, maybe Dr. Christine Jones from Australia ? i do second tha motion that transwhatever companies do have their own agenda, not necessarily a so called sustainable (I for one think that

[ECOLOG-L] stats for undergrads -

2010-04-30 Thread Abraham de Alba A.
Does seem like a bit heavy expectations Nathan and fellow ecologgers, Does seem like a bit heavy expectations for undergrads, but most definitely back the review of Hulbert's paper on pseudoreplication, and perhaps add one or two on "multiple testing" if I remember correctly there was one by Ch

Re: [ECOLOG-L] 10 years without warming

2009-10-02 Thread Abraham de Alba A.
http://ams.allenpress.com/archive/1520-047 The original article is in: http://ams.allenpress.com/archive/1520-0477/90/8/pdf/i1520-0477-90-8-S1.pdf I think the authors are actually answering the claim that no upward trend has been detected globally, and yes it's too bad this is before the Copenha

Re: [ECOLOG-L] Population control

2009-09-22 Thread Abraham de Alba A.
I thought this argument was done fore a long time ago, I mean, the sociologists found that "enpowering" women was more profitable, that is, women that find that can contribute to their well-being WILL use concraception, otherwise it doesn`t matter if all the drug stores are full of contraceptive

Re: [ECOLOG-L] Are ecologists the problem?

2009-09-09 Thread Abraham de Alba A.
My 2 cents on the other side of the coin: As you mention, Kevin, My 2 cents on the other side of the coin: As you mention, eating lower on the food web is very important, EXCEPT when you use grass-fed beef, because to my knowledge that's the only and best way to trasform grasslands into sothi

[ECOLOG-L] C Seq Grass vs Wood

2009-09-07 Thread Abraham de Alba A.
mptuous "management" has trashed a lot of "range" in both the USA and Mexico.) - Original Message - From: "Abraham de Alba A." To: Sent: Thursday, September 03, 2009 12:45 PM Subject: [ECOLOG-L] C Seq Grass vs Wood I am trying to settle an interesting argum

[ECOLOG-L] C Seq Grass vs Wood

2009-09-03 Thread Abraham de Alba A.
I am trying to settle an interesting argument and my dear ecologgers: I am trying to settle an interesting argument and my library resources are quite limited, I hope you can direct me to reputable references. There is the general belief (even academic) that forests or woodlands in general can

Re: [ECOLOG-L] simulate grazing with mowing treatments

2009-05-08 Thread Abraham de Alba A.
You are NOT going to simulate grazing by large herbivore like that, you are going to simulate cutting-removal of whatever. That type of experiments have been totally obliterated in practice since they are quite misleading. There is evidence that animal's saliva can be affecting the leaves, the a

[ECOLOG-L] Soil Hyd corers ?

2009-03-26 Thread Abraham de Alba A.
Could I ask your experiences with hydraulic soil core Dear Ecologgers, Could I ask your experiences with hydraulic soil corers ? I am thinking of a contraption that can be plugged into the fender of a pickup or thereof, for say 50 cm cores in semiarid grassland sites, any input would be greatly

[ECOLOG-L] Book recom

2009-02-06 Thread Abraham de Alba A.
For my  part I would recommend "One River" by Wade Davis, the theme is the work and spinoff of Richard Evans Schultes a great ethnobotanist   Abraham de Alba Avila Terrestrial Plant Ecology INIFAP-Ags Ap. postal 20, Pabellón Arteaga, 20660 Aguascalientes, MEXICO  Tel: (465) 95-801-67, & 801-86 ex

Re: [ECOLOG-L] Penetrometers (Pesola Spring Scales??)

2008-04-14 Thread Abraham de Alba A.
Cone penetrometers are fairly simple to construct in a sho Dear Sarah, Cone penetrometers are fairly simple to construct in a shop, at La jornada web page they have a link to a paper by Hendricks from a soil science paper (I think) that has instructions on building one, the down side is that you

Re: [ECOLOG-L] Environmental gradients

2008-04-10 Thread Abraham de Alba A.
I 'm not sure about the "latest" but I do remember Dean L. Urba Wayne, I 'm not sure about the "latest" but I do remember Dean L. Urban on his work on Classification Trees (CART) in the Sequoia-Kings Canyon N.P. quite an elegant work, interfaced with SIG, but don`t have access to a descent libra

Re: She will not have babies

2007-11-29 Thread Abraham de Alba A.
Another third world, but with the knowledge from science Noone to quote, but it is a well researched area in sociology, it is the empowering of women which actually lowers conception rates, not the minimum wage as most of us thought in the 70's My one cent Abraham de Alba Avila

Re: downscaled climate data

2007-11-21 Thread Abraham de Alba A.
I wouldn`t advice using any climate variable after 1995 as baseline, it is generally considered biased towards "climate change" C Ravenscroft <[EMAIL PROTECTED]> wrote: One approach to downscaling GCM data is to add projected changes to baseline climatology derived from historic averages. 30

slope as dependant var

2007-10-01 Thread Abraham de Alba A.
Dear Ecologgers: I have been doing some regressions with temperature means across time series on about 80 stations in a rather small region (less than 2 degrees lat), contrasting before and after 1991, and not surprisingly I have found quite significant slopes in many stations. But in tryi

Fwd: [ECOLOG-L] DDT question

2007-08-27 Thread Abraham de Alba A.
Dear Kelly: Don´t know about the revutal to R. Carson's allegations, but there are tons of info (I am in the middle of México, a bit far from a library, and so I am at a disadvantage to give you relevant references ) on estrogen-like compounds that result from the breakdown of DDT, and