Oak Savanna on a dry hilltop in Shiloh Ranch Regional Park, Sonoma County, California.
Second in the Water Series
Try to imagine life without water….No matter how dry it may seem to be here, the soil cracked open in supplication, the lawns toasted and tan, Rhododendrons with their leaves curled and burnt along their margins, Vine and Japanese Maples, their leaves crisped blowing down curbs in late summer’s heat, there is water…everywhere, locked deeply in tissues, bound tightly to soil particles. Like most things, there are no absolutes with water. It is not simply here then gone, but on a continuum of availability. Biological scientists and agronomists will often speak of ‘dry weight’ when looking at growth trying to minimize the variability of water weight in living organisms. They bake the subject in autoclaves reducing water weight to zero without igniting and burning the carbon and more ‘solid’ structure to ash. There is water throughout the structure of plants, hydrating their cells, making possible the many processes at work within them. There is water in the atmosphere even on a blistering hot and clear day in the form of vapor effecting everything from the Evapotranspiration Rate, (ET), to how hot or cold we may feel beyond what the thermometer reads; and there is water in the soil though our plants be wilting or dead of desiccation, and it effectively sucks the moisture from our skin when we work bare handed in it. Water is everywhere even in the dry periods within the desert and, nature is okay with that and has in fact adjusted to it. Our gardens, however, are anomalies we’ve created. We are invested in them and as gardeners we do what we can to assure their survival, and more, their success! Continue reading
Water, beautiful and essential. The fountain in the Peninsula Park Rose Garden, a frosty February morning
First in the Water Series
Water is essential to all life on Earth. It comprises a very significant percentage of the mass of every life form. It is the vehicle without which the various metabolic processes would cease. It dissolves and carries in solution the many elements organisms require to build their tissues. It helps produce the conditions necessary for other supporting life forms. In it’s heating and cooling it creates the weather that helps define the parameters and limits to life in any given place. It works as an erosive medium breaking down landscapes and helping create new ones upon which life adapts and grows. Water moves across and through the surfaces of the Earth in a dynamic yet stable manner helping create the conditions within which life may evolve. It fills that sweet spot moving readily from gaseous form to liquid to solid where our water/carbon based life forms can take advantage of its transformations. Without it life as we know it would end. With our disruption, we have altered the pathways and cycling of water across the landscape and so have altered the conditions under which life must live, cutting down forests, draining wetlands, channelizing streams, grading and paving the Earth’s surface. Our actions have directly impacted every habitat, every landscape, on Earth. We are even changing the weather patterns themselves, changing the conditions within which it operates driven by the sun’s energy. We are massively altering the Earth’s landscapes and its atmosphere in which all of this happens. It is taking on a ‘life’ of its own as we accelerate the rates of deforestation, desertification, expanding urban heat islands, while we continue the mining and burning of carbon previously sequestered for millions of years pressing us on into massive perturbations in our climate patterns. Everything is connected to water. Continue reading