Evans Ehouman

23 Questions 34 Answers 0 Followers

Questions related from Evans Ehouman

Why do for soil sampling we go every 10 cm ?

I am involved in a research project related to soil organic carbon restauration. In littérature, it's recommended to sample at 0-10 ; 10-20 and 20-30 cm. I would like to know why these depths are...

06 April 2023 2,684 3 View

Is it possible to use FIV or IVI for grass like plants?

I am interested in using community index to characterize plant community. Most of the time, people use Family Importance Value (FIV) and IVI for macrophanerophytes plants. I would like to use it...

27 August 2016 4,814 5 View

For latex user, is there a way to put a page in a portrait document and keep the page numbering?

Dear, I am i new comer in the environment of latex I am interested to use it for a report. I have in my portrait document a landscape page. I tried different package and command in latex, to turn...

19 August 2016 530 3 View

How could export to .csv, information which are in a raster?

Hi all, I am using Qgis for map designing. I am interested to find the annual precipitation estimation in different study site. I have download a data GeoTiff -from Malaria Early Warning System...

23 June 2016 9,066 4 View

I am doing vegetation analysis, I would like to know if it is relevant to use PAST sofware for this goal?

Hi all, I am interested in ecological software for data analysis, I wish to know if it is efficient to use PAST software for this goal. I know a couple of software but I was looking for a free one...

15 June 2016 2,193 5 View

Is there a difference between Dryopteridaceae and Thelypteridaceae, talking about ferns?

A plant species on which I work has been identified as Cyclosorus oppositifolius? looking for information about its chorology and life form i found out a synonym on Global plants as Dryopteris...

18 April 2016 731 5 View

How to make analysis of Ecological Data with R, vegan Package?

Dear, I would like to use vegan package for analysis different releve made in different region in my country, if this different regions can be gather according to their compositions. How could I...

18 March 2016 9,386 4 View

Most of the Family importance Value that I se in paper are related trees studies, is it possible to compute it for grass, or herbaceous plants ?

Dear, I am interested in vegetation structure study, especially, herbaceous plants communities. I would like to find the Family Importance value for herbaceous plants family. however, most of the...

18 March 2016 6,167 7 View

Is there a French edition of this book ?

Hi all, happy Research year 2016. I am interested in numerical Ecology, I found out a very interesting book of P Legendre, L Legendre. I wish to know if there is a French Edition of this...

03 January 2016 3,421 2 View

How can I calculate the Shannon index or other biodiversity index when I only have cover classes of taxa instead of number of individuals per plot?

In my research, I would like to find the abundance of plants along water point in my region. In the literature, it is possible to find the abundance using the Braum Blanquet for example. There is...

25 November 2015 7,107 4 View

How can I estimate the percentage of plant covering a quadrat of 1 m sq in the case of liana mix with single plants in that quadrat ?

Hi all! I am interested in evaluating the number of plant along waterbodies. In my 1m sq quadrat that I use, it may be a mixture of rampant plant and single plants. Sometimes, rampant plants may...

27 October 2015 6,750 7 View

How can I accurately evaluate the abundance of herbaceous species in a plot ?

I would like to study herbaceous vegetation, especially, Among the grass species composing this vegetation, Know which one is the most abundant, I heard about Braun-Blanquet J.,(1932)...

03 July 2015 2,927 9 View

What size should be the best sampling area in a floristic inventory ?

I want to conduct a floristic inventory in my region. I would like to know what is the best area for sampling that I should choose. Sometimes, people talk about 1ha size. Could we do less than...

26 March 2015 6,028 5 View

How does one compute IC50 value?

How to compute IC50 value of a solution automatically I performed experimentation, determining the percentage of bacteria growth in presence of different plant extracts and at different...

01 August 2014 8,752 2 View

What does the R square coefficient mean and why is there different value when computing with Excel?

Computing the correlation between the concentration of plants extracts and the inhibitory percentage, I used excel software. When I make the Logarithm graph, in dialogue box, it is asked me if I...

21 May 2014 7,124 13 View

Why are there so many different methodologies for the MTT test?

I want to carry out the MTT Test, but in the literature, there is no standard test. The methodologies vary a lot from one another. Some people talk about shaking before optical reading, some...

23 April 2014 5,718 0 View

In an MTT viability test, what is the concentration of plant extracts that should be used?

I would like to study anti proliferative activity of plant extracts using the MTT test. I wonder which concentration of plant extracts I should used. What parameters should I take into account to...

19 April 2014 8,414 3 View

On a computer running Ubuntu 13.04 OS, how to perform an LHD Fisher/HSD statistical analyses with R?

Software procedures: Make ANOVA 1 Analysis data with R software. Find out "P" and "F" with values during an ANOVA 1 Analysis of experimental data.

15 January 2014 8,443 2 View

Why do people use sometimes 'mL' rather than 'ml' in order to talk about milliliter ?

02 December 2013 3,607 20 View

What are the different states of iron in the body and what are their relationships with oxidative stress?

Oxidative stress and iron.

31 July 2013 3,330 5 View

What is the usefulness of making the ferric reducing antioxidant power test?

FRAP test And antioxidants plants

30 July 2013 7,920 2 View

Is there a way to record personal datas in Brahms Herbarium management sofware?

Dear, I am interested in Brahms Herbarium management.However, I face difficulties to record my personal data, despite the fact that, i have load different database. I would like to record species...

01 January 1970 939 2 View

Please, is there a conventional way to shorten plant species names?

Dear, I am interested in shortening plant names that I have in my phyotosocialogical table. In fact, I would like to carry analyses with Vegan Package, but as the plants names are too long I have...

01 January 1970 9,068 5 View