Derry City and Strabane — county
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 14,679
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 13,008
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 12,273
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 11,799
- Group
- Fish
- Peak month
- March
- Records since 2000
- 10,786
- Group
- Liverworts
- Peak month
- April
- Records since 2000
- 9,606
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 8,188
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 7,753
- Group
- Mosses
- Peak month
- July
- Records since 2000
- 6,519
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 6,465
- Group
- Liverworts
- Peak month
- July
- Records since 2000
- 5,999
- Group
- Fish
- Peak month
- September
- Records since 2000
- 4,325
- Group
- Mosses
- Peak month
- August
- Records since 2000
- 2,861
- Group
- Fish
- Peak month
- September
- Records since 2000
- 2,526
- Group
- Fish
- Peak month
- September
- Records since 2000
- 1,459
- Group
- Seaweeds and algae
- Peak month
- August
- Records since 2000
- 1,314
- Group
- Fish
- Peak month
- September
- Records since 2000
- 790
- Group
- Fish
- Peak month
- September
- Records since 2000
- 684