The Hertfordshire Naturalist 2022 (Transactions of the Hertfordshire Natural History Society, Vol. 54 (1), pp. 1-88) was mailed to members in October  2022

Contents: Long-term monitoring at Heartwood forest - 2022 update  (Tim Wright et al.)

The influence of habitat quality and habitat availability on British bat (Chiroptera) activities across the north Thames river basis  (Bethan Finn Leeming, Sarah J. Scott & Judy England)

The hoverflies of Nunnery Allotments (Will Scarratt)

Crayfish in Hertfordshire: 2022 Update (Edward Willis-Jones)

A summary of some spider (Arachnida, Araneae) recording activity in Hertfordshire during 2021 and details of two new county records (David Carr)

Fat duckweed (Lemna gibba) might be much more widespread in Hertfordshire than previously thought (Alla Mashanova, Javier Espinsoa Montiel & Cristina Berrero Sicilia)

The growth of some veteran trees in Hertfordshire (Stuart Warrington)

The mysterious case of the green-bodied cranefly (George Fowler)

What controls stream flow in the Bourne Gutter? (Nicholas Pierpoint)

Two riverfly discoveries in the River Mimram in 2021 (Robin Cole)

Recorders' reports on:

Higher plants (Ian Denholm & Alla Mashanova)
Geology (Michael Howgate)

Obituary: Charles Gordon Hanson