This Blog covers nature sightings and related news in the Calderdale area.
It includes all groups - Plants, animals and fungi with links to specialist sites.
Anyone wishing to become a member of this Blog and post sightings please contact us.
If you would like to join the Halifax Scientific Society either email me or come along to the next meeting.
All welcome:
Please contact us about any sensitive records before posting on the blog

Tuesday, 7 February 2017

Soil is the key to healthy woodland

In one acre of a typical British woodland system there are:
• 110 tons of trees
• 1 lb of birds
• 21 lb of large animals
• ½ ton of plants
• 1½ tons of fungi
• 4½ lb of small mammals
• 500 lb of earthworms
• 9 lb of beetles
• 50 lb of spiders
• 90 lb of slugs & snails
• 4 tons of bacteria
• 340 lb of protozoa

Or: “Each shovel of soil holds more living things than all the human beings ever born.”

“Soils often have between 1,000,000 to 10,000,000 bacteria per gramme.”

“A teaspoon of forest soil may hold more than 10 miles of fungi and 1 gramme of garden soil can contain around one million fungi.”


  1. This is astonishing, Philip! I'll spread the word. I absolutely adore reading your posts, they are always intriguing, fascinating and informative. When I saw you briefly at the Woodland Strategy Meeting the other day, you said you wondered if anyone read your posts - believe me, THEY DO!!!!!

  2. Thank you Charlotte, it was good to say 'hello' even if it was brief. You are most encouraging.