Does phthalic acid ester (PAE) have any toxic effect on plant tissues?

Apart from the endocrine distruption of PAE in humans, does it have any toxic effect on plant tissues? I would also appreciate if some can provide a brief protocol to determine PAE content in...

11 December 2017 6,205 0 View

Why is some scholarly articles published (though not open access) not shared with colleagues, even on a private level?

I have noticed that some requests for scholarly articles from colleagues on RG and some by private emails (though published mostly not on open access status), are always turned down stating that...

09 October 2017 3,082 4 View

What differentiate the XRD pattern of pure metallic Cu nanoparticles from Cu nanoparticles with impurities?

I have two XRD patterns of Cu nanoparticles of different sizes (

07 August 2017 8,940 18 View

What is the conversion factor of enzyme activity of ascorbate peroxidase and Glutathione reductase from U/L (SI Unit) to Umol/L

Please colleagues, I need to know how to convert the measure of enzyme activities in plants (Ascorbate peroxidase and Glutathione reductase) from the SI unit of U/L to umol/L. I found that most...

05 June 2017 871 2 View

What is the appropriate matrix (covariance or correlation) in principal component analysis?

05 June 2017 4,606 9 View

What is the environmental relevance of carbon black in the soil?

Firstly, I want to know the role of carbon black in soil restoration, perhaps it is effective in soil conditioning (fertility increase etc). Also, i would like to know if there is any empirical...

31 December 2016 9,208 13 View

What particle size is appropriate for the determination of total and bioavailable soil metal?

I want to know the precise range of particle sizes that are considered appropriate when determining total and bio-available metal concentrations in agricultural soils. I understand most scholarly...

31 December 2015 8,983 16 View

What method can be employed to determine the toxicity potential of extractable trace metal (e.g. Cu, Pb) in soil?

I want to determine the activity of extractable Cu (pCu2+) and Pb (pPb2+) in the soil to evaluate their toxicity potential after some period of aging. Can someone provide a detail protocol to go...

10 November 2015 6,020 5 View

What is the difference between canonical and detrended correspondence?

I want to know the main differences between canonical correspondence and Detrended correspondence in term of their applications to data in statistics.

05 June 2015 2,319 0 View

What is the true measure of academic productivity in an academia?

Recently in developing countries, there have been series of debate on the measure of productivity of researchers/academics. Many advocate the use of metric method like impact factor of...

05 June 2015 1,092 1 View

Where to find data on trees in tropical agroforestry?

Hi, I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry. Have you ever heard about...

28 February 2021 7,356 8 View

The Shannon's index is inversely proportional to Simpson's index (1-D)?

I'm having a problem with my bloxplot with Shannon's and Simpson's indexs. The value of Shannon for my Community 1 indicating higher diversity (in relation of the Community 2), but have lower...

26 February 2021 3,033 9 View

Any recommendations for methods to analyze elephant space-use (using GPS) and correlating this with changes in NDVI?

For my Masters I am looking into elephant space-use and its effect on vegetation change. I have elephant GPS collar data and was going to use Google Earth Engine to obtain NDVI values. I would...

16 February 2021 7,097 3 View

How to consider effects of rapid warm adaptation in modeling of ecological impacts of warming?

I would highly appreciate it if my fellow ecologists (biologists) provide their opinion on the thoughts below [esp., shortly tell us which path may be more effective, if they know another way, if...

15 February 2021 3,642 6 View

What is the magnitude of yearly rhizopdeposition in tropical forests?

Hi all, I am trying to find reference values on annual soil rhizodeposition rates for different kinds of forests, with a particular interest for tropical rainforests. Do we have an idea of the...

26 January 2021 4,278 4 View

Can you recommend a good book on analytical chemistry for non-chemists?

Dear colleagues, I am asking for you recommendation: I need a book on analytical chemistry in environmental sciences. As a non-chemist (a biologist) I have some basic chemistry knowledge but not...

25 January 2021 8,486 8 View

Why are my Maxent SDM projections coming up almost entirely blue?

Hello Maxent Community, I have been generating SDM models and projections in Maxent. I have had some success with one set of variables (some Hydroshed variables mixed with World CLIM variables);...

19 January 2021 3,994 7 View

How deep into the sediment do marine/riverine oligochaetes live?

I am working with intertidal muddy sediments. In one of my sites the sediment was extremely muddy (high % of silt), oxic layer was shallow, and there were a lot of oligochaetes. I would like to...

14 January 2021 7,269 4 View

How to make open-top chambers?

Hi, I wonder if someone would share experience with building open-top chambers for surface heating of soil. My main question is what material can be used to build them? I found researchers using...

05 January 2021 5,396 6 View

R package for multivariate dispersion as a measure of beta diversity?

Hello, everyone: I've been reading some old and new papers on how to compute beta diversity using incidence or abundance data from several assemblages/communities. For my data, I am interested...

03 January 2021 9,293 1 View