Nature is constantly communicating. Together they form the language of the living system.
Observe where water enters. Where does it accelerate? Where does it pool? Where does erosion occur? Where does it disappear? Existing watercourses should be understood before they are altered. Every drop retained in the landscape during the wet season may become valuable during the long Mediterranean summer.
Colour alone cannot diagnose soil health, but darkening topsoil can indicate increasing organic matter. We look for structure, smell, aggregation, moisture, root penetration, biological activity and evidence of compaction.
Earthworms are particularly useful biological indicators. Charles Darwin devoted years to studying their role in soil formation [REF]. Their burrowing, feeding and casting can improve soil structure, aeration, organic-matter incorporation and water movement. Their abundance tells us something important about the conditions below our feet.
Since becoming custodians of Quinta Picapau, we have witnessed an encouraging increase in songbirds. Birds search our land for earthworms and insects, including many insects capable of damaging vegetable crops. Their return is not simply pleasant. It is evidence that ecological relationships are being rebuilt.
Animals constantly provide feedback. We observe where they choose to graze or browse, which plants they select, where they rest, where they seek shade and water, and how their behaviour changes. Their condition and behaviour can reveal things that might otherwise be overlooked.
Trees are the long-term memory of the landscape. Their growth records drought, fire, disease and previous management. Premature leaf loss, dieback, poor flowering, weak growth or a lack of regeneration may indicate problems extending far beyond the tree itself. Tree health can reflect soil condition, water availability, fungal relationships and wider ecological stress.
Soil temperature is easily overlooked. Vegetation, mulch and organic matter provide natural insulation. Bare soil exposed to intense Mediterranean sunlight can become considerably hotter than the surrounding air. As the surface heats and dries, conditions become increasingly difficult for roots, earthworms, fungi and microorganisms. Moisture evaporates faster and biological activity can decline.
We regard ground cover not merely as vegetation but as part of the landscape's climate-control system.
Intervention should follow understanding, not precede it.