He spread seeds and spores by hand, casting them away from bags or growth media dishes latched to his belt, feeling like a figure from Van Gogh or the Old Testament; it was a peculiar sensation of mixed power and helplessness, action and fate. He arranged for loads of topsoil to be trucked up and dumped on some of the little fields, and then he spread it out by hand, thinly. He brought in worms from the university farm at Sabishii. Worms in a bottle, Coyote had always called people in cities; observing the writhing mass of moist naked tubules, Nirgal shuddered. He released the worms onto his new little plots. Go, little worm, prosper on the land. He himself, walking around on the sunny mornings after a shower, was no more than moist linked naked tubules. Sentient worms, that’s what they were, in bottles or on the land.
After the worms it would be moles and voles. Then mice. Then snow rabbits, and ermine, and marmots; perhaps then some of the snow cats wandering the moors would drop by. Foxes. The basin was high, but the pressure they were hoping for at this altitude was four hundred millibars, with forty percent of that oxygen; they were already most of the way there. Conditions were somewhat as in the Himalayas. Presumably all of Earth’s high-altitude flora and fauna would be viable here, and all the new engineered variants; and with so many ecopoets stewarding small patches of the upland, the problem would be mostly a matter of prepping the ground, introducing the basic ecosystem desired, and then supporting it, and watching what came in on the wind, or walked in, or flew. These arrivals could be problematic of course, and there was a lot of talk on the wrist about invasion biology, and integrated microcline management; figuring out one’s locality’s connections to the larger region was a big part of the ongoing work of ecopoesis.
Nirgal got even more interested in this matter of dispersal the next spring, in first November when the snows melted, and poking out of the late slush on the flat terraces of the northern side of the basin were sprigs of snow alumroot. He hadn’t planted them, he had never heard of them, indeed he wasn’t even sure of his identification, until his neighbor Yoshi dropped by one week and confirmed it: Heuchera nivalis. Blown in on the wind, Yoshi said. There was a lot of it in Escalante Crater to the north. Not much of it in between; but that was jump dispersal for you.
Jump dispersal, spread dispersal, stream dispersaclass="underline" all three were common on Mars. Mosses and bacteria were spread dispersing; hydrophilic plants were stream-dispersing along the sides of glaciers, and the new coastlines; and lichen and any number of other plants were jump-dispersing on the strong winds. Human dispersion showed all three patterns, Yoshi remarked as they wandered over the basin discussing the concept — spreading through Europe and Asia and Africa, streaming down the Americas and along the Australian coasts, jumping out to the Pacific Islands (or to Mars). It was common to see all three methods used by highly adaptable species. And the Tyrrhena massif was up in the wind, catching the westerlies and also the summer trade winds, so that both sides of the massif got precipitation; nowhere more than twenty centimeters a year, which would have made it desert on Earth, but in the southern hemisphere of Mars, that was a precipitation island. In that way too a dispersion catchment, and so very invasible.
So. High barren rocky land, dusted with snow wherever shade predominated, so that the shadows tended to be white. Little sign of life except in basins, where the ecopoets helped along their little collections. Clouds surged in from west in the winter, east in the summer. The southern hemisphere had the seasons reinforced by the perihelion-aphelion cycle, so that they really meant something. On Tyrrhena the winters were hard.
Nirgal wandered the basin after storms, looking to see what had blown in. Usually it was only a load of icy dust, but once he found an unplanted clutch of pale blue Jacob’s ladders, tucked between the splits in a breadloaf rock. Check the botanicals to see how it might interact with what was already there. Ten percent of introduced species survived, then ten percent of those became pests; that was invasion biology’s ten-ten rule, Yoshi said, almost the first rule of the discipline. “Ten meaning five to twenty, of course.” Once Nirgal weeded out a springtime arrival of common street-grass, fearing it would take over everything. Same with tundra thistle. Another time a heavy dust load fell on an autumn wind. These dust storms were small compared to the old global southern-summer storms, but occasionally a hard wind would tear up the desert pavement somewhere and send the dust below flying. The atmosphere was thickening rapidly these days, fifteen millibars a year on average. Each year the winds had more force, and so thicker areas of pavement were at risk of being torn away. The dust that fell was usually a very thin layer, however, and often high in nitrates; so it was like a fertilizer, to be washed into the soil by the next rain.
Nirgal bought a position in the Sabishii construction coop he had looked into. He went in often to work on the town’s buildings. Up in the basin he did some assembly and testing of solo blimpgliders. His work cottage was a small building made of stone-stacked walls, with plates of sandstone for shingles. Between that work and the farming in the greenhouse and his potato patch, and the ecopoesis in the basin, his days were full.
He flew the completed blimpgliders down to Sabishii, and stayed in a little studio above in his old teacher Tariki’s rebuilt house in the old city, living there among ancient issei who looked and sounded very much like Hiroko. Art and Nadia lived there too, raising their daughter Nikki. Also in town were Vijjika, and Reull, and Annette, all old friends from his student days — and there was the university itself, no longer called the University of Mars, but simply Sabishii College — a small school that still ran in the amorphous style of the demimonde years, so that the more ambitious students went to Elysium or Sheffield or Cairo; those who came to Sabishii were those fascinated by the mystique of the demimonde years, or interested in the work of one of the issei professors.
All these people and activities made Nirgal feel strangely, even uncomfortably, at home. He put in long days as a plasterer and general laborer on various construction jobs his co-op had around town. He ate in rice bars and pubs. He slept in the loft in Tariki’s garage, and looked forward to the days he returned to the basin.
One night he was walking home late from a pub, asleep on his feet, when he passed a small man sleeping on a park bench: Coyote.
Nirgal stopped short. He walked over to the bench. He stared and stared. Some nights he heard coyotes howling up in the basin. This was his father. He remembered all those days hunting for Hiroko, without a clue where to look. But here his father slept on a city park bench. Nirgal could call him anytime, and always that bright cracked grin, Trinidad itself. Tears started to his eyes; he shook his head, composed himself. Old man lying on a park bench. One saw it fairly frequently. A lot of the issei had gotten here and gone off somehow, into the back country for good, so that when they came into a city they slept in the parks.
Nirgal went over and sat on the end of the bench, just beyond his father’s head. Gray tatty dreadlocks. Like a drunk. Nirgal just sat with him, looking at the undersides of the linden trees around the bench. It was a quiet night. Stars ticked through the leaves.