Should I use Structural Equation Models (SEM) for my Functional Diversity (FD) Study?

Hello everyone, I'm trying to calculate various functional diversity measures (Fric, Feve and Fdiv) for bird communities by using count data which is collected annually. My ultimate aim is to...

08 September 2018 3,715 0 View

Calculating Functional Diversity (FD) as in Petchey & Gaston, 2002 in R?

My workspace objects: http://www.filedropper.com/workspace1_1 Hello everyone. I need help calculating FD as stated in Petchey & Gaston 2002 in R. I have a series of communities with present/absent...

06 July 2018 8,123 5 View

How to use Generalized Linear Models to compare means in R?

Hello everyone, I'm having hard time using Generalized Linear Models in hypothesis testing in community ecology. I'm trying to figure out whether a certain treatment has resulted in higher counts...

06 July 2018 8,606 10 View

How is generalized Linear Model (GLM) used to compare means of two count data?

Hello people, I want to know how to use GLM to compare mean number of granivore birds for "high water level" years and "low water level" years as shown in the picture provided below. This is an...

04 May 2018 515 5 View

How is "rarefy" function in R used to calculate rarefied species richness?

I'm trying to calculate rarefied species richness for data set which looks something like https://ibb.co/bZeALk this. I read the .csv file into R and it was converted to a data frame. Now when I...

03 April 2018 9,665 2 View

Any research ideas relating ornithology and plant ecology?

Hello everyone, I'm currently a PhD student at the Department of Biological Sciences at METU, Turkey and I need some research ideas relating ornithology/avian ecology/avian conservation to plant...

03 April 2018 8,351 2 View

Is there a more powerful alternative to Mann-Whitney U-test?

I'm having hard time choosing the right statistical method for my study. The data that I have is summarized below. - Waterbird count data (absolute counts). Non-standard, varying effort but...

01 February 2018 5,255 5 View

How can I calculate rarefied/rarefaction richness index in Excel or R or any other software?

I have Mid-winter Waterfowl Survey data for a lake (counts that are done in mid-winter every year - species and individuals from each species are counted). The data looks something like...

04 May 2017 5,823 12 View

Mid-winter Waterfowl Survey Data: which biodiversity Indices should be used?

I have a 27-year Mid-winter Waterfowl Survey Data (species list and abundances) for a lake and I want to compare the years and groups of years in terms of their avian diversity. The counts are...

04 May 2017 6,827 7 View

How can I study ground coverage of lawn, non-organic substrate, water bodies and tree cover of small sized urban parks?

06 July 2014 5,460 6 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View

Can you share me how teacher education is managed in your respective national educational system?

I feel that the practice in teacher education in my country is below the expected performance level due to very poor management system. Hope I will learn something from your experiences.

02 March 2021 1,516 4 View

How Download/Extract citations of 1 given year ALL my publications in Google Scholar?

If you google this you find a lot of smart guys explaining you how to download 1 year of citations of 1 single paper of yours (or anyone else). I mean 1 year of ALL my papers. or ... ALL years or...

01 March 2021 1,121 9 View

Where can I find atmospheric measurement profiles (temperature, density, etc.) between 300-800 km altitude?

I am investigating thermospheric mass density profiles between 300-800 km altitude. I would like to compare the variability with other parameters, including temperature, electron content,...

01 March 2021 5,902 3 View

Any suggestions for a website that allows you to create questionnaires and gather unlimited data (Totally free)?

I have found only four of them; www.surveyplanet.com www.online-anket.gen.tr www.surveey.com and of course google forms. Expecting to see your suggestions if there is any. Thank you

28 February 2021 3,237 3 View

High aspect ratio hexahedral mesh optimization solver?

I am interested in evaluating mesh optimization solvers that converge to high aspect ratio unstructured hexahedral grids. In other words, I am interested in a solver that optimizes warpage,...

26 February 2021 7,279 2 View

How to add missing citation?

Dear colleagues, I have found that many authors have a concern regarding their missing citation in RG because often citation in RG is lower than google scholars. I also missed some citation...

26 February 2021 928 6 View