Yup. And there's industry/combustion engines as well. All happily releasing nitrogen in one form or another. It's sad that a lot of nature conservation organiza

Yup. And there's industry/combustion engines as well. All happily releasing nitrogen in one form or another. It's sad that a lot of nature conservation organizations' work is simply just mowing/removing mowed substance/repeat and then after a years of countering the influence of nitrogen they get a meadow which looks sort of 'natural', i.e. typical vegetation for specific type of soil which used to be common decades ago. And beautiful too. On a related note: where I live a millimetered lawn without any kind of plant which isn't grass still seems to be considered the summum of gardening. But as far as nature and biodiversity goes it's almost as dead as concrete. Still a lot which could be gained in those areas as well.