error message in package "FD", function dbFD ()

Dear R community,



I  have some trouble with the dbFD function in the FD package.

str(a)

'data.frame':    150 obs. of  48 variables:

str(x)

'data.frame':    48 obs. of  9 variables:



ex1 <- dbFD(x,a)

Error in dbFD(x, a) :

  Species labels in 'x' and 'a' need to be identical and ordered alphabetically (or simply in the same order).



I have checked multiple time the data set but this message keeps on appearing. The names of the species are identical in both data.frames.



I was wondering if you could help me by giving me an example of an excel trait and species matrix table to upload for this package. Below is a snapshop of my data. I have also checked that there are no NA's problems and that there is no species abundance = 0 or no community with 0 species.



Thank you for any advice!

Best

Laura



Species table (a)
Agonum_assimile

Agonum_dorsale

Agonum_gracile

Agonum_gracilipes

2

3

0

0

0

6

0

0

1

10

0

0

1

5

0

0

0

8

0

0

2

7

0

0

1

6

0

0






Trait table(x)


Species

SizeCategoy

Ecology

Reproduction

Diet

Wing

Agonum_assimile

C

nocturnal

spring

Carnivorous

Brachypterous

Agonum_dorsale

B

nocturnal

spring

Carnivorous

Macropterous

Agonum_gracile

B

diurnal

spring

Carnivorous

Macropterous

Agonum_gracilipes

B

both

spring

Carnivorous

Macropterous