Gardens are also habitats, domesticated but at the same time with potential to be wild. They are very diverse and cover a large area when totalled together, but they are also dynamic, styles of gardening change over time and with changes of ownership. So however good for wildlife they might become they are individually precarious places for wildlife. An example of this is the change that happened to the garden of my former home, after twenty years something of a wildlife haven with breeding grass snake and slow worm, the new owners filled the pond, laid the whole to grass and fenced it to allow their dogs to roam safely. This is not to say that having a wildlife garden for twenty years was a waste of time. Lots of species will have benefited and most will have spread out to new homes and they will mostly have been species that are good at moving around to have got to my garden in the first place.
The more people that can find space for wildlife in their gardens the more “stepping stone” patches that wildlife can use to move about, potentially connecting populations and reducing local extinctions.
Such little patches of grassland will not make a huge difference on their own but when added to other nearby patches in other gardens, on road verges and playing field edges might add up to enough to support populations of many insects such as this robberfly.
Robberflies are predators, so if the habitat can support a predator it must also be supporting populations of its prey, the presence of predators is a positive sign.
It has been for sometime a mantra of conservationists that we need a countryside that has habitats that are “Bigger, Better and more Joined-up”. Larger areas will support more species and be more resilient to species loss. It is useful if the patches actually join, so are contiguous, but if not then as close as possible with stepping stones or, better still, corridors between them. Contiguity, or if you prefer continuity of area is important as is continuity in time. Very short-lived bits of habitat will hold fewer species than ancient sites with very little change. Some specialists thrive on change and to do well need bare, new sites, rapidly being ousted by other species once things settle down, but even these species need a continuous supply of new sites, so continuity is still vital to their survival. Looking at habitat in this way, seeking the continuities can allow you to spot where the valuable sites are, even in the absence of wildlife records. It might also suggest what are the key habitats on which to concentrate management for the most positive outcomes.