Kaan Özgencil

11 Questions 15 Answers 0 Followers

Questions related from Kaan Özgencil

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...

09 September 2018 3,788 0 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...

07 July 2018 8,714 10 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...

07 July 2018 8,577 5 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...

05 May 2018 621 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...

04 April 2018 9,732 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...

04 April 2018 8,419 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...

02 February 2018 5,362 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...

05 May 2017 5,972 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...

05 May 2017 6,881 7 View

Is there any tool I can use to create grids in Google Earth Pro?

I want to divide some polygons I created in GE into grids of 5x5m. I don't know how to use GIS softwares, so please keep that in mind while you're answering. Still, if you suggest an easy-to-use...

10 October 2014 545 2 View

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

How can I study ground coverage of lawn, non-organic substrate, water bodies etc. and tree cover of small sized urban parks (no larger than 80x80 metres)?

07 July 2014 5,511 6 View