Chronicles: Page 3

A Southern Lugworm seen in the coastal substrate helped reinterpret earlier gelatinous egg sacs that had once been suspected to belong to ragworms. The observation suggests the worm, or others like it, may have been present since the original local substrate was added more than two years earlier.

Daphnia are already present, but their numbers differ between the protected Lakeshore vegetation and the open Freshwater Lake. Flagfish predation and limited cover keep open-water populations low, so Tapegrass growth may be the real prerequisite for any larger Daphnia response to suspended algae.

After the large worm disappeared, its tunnel remained as a lighter track through darker Seagrass Meadow substrate. The burrow likely pulled oxygenated water into the sediment, creating small zones where nitrogen transformations could shift around the tunnel wall.

A large dark green worm appeared against the glass in the Seagrass Meadow after years of hidden activity. Its visible deposit-feeding behavior raised a new question about how long it has been processing the substrate and why it only became visible now.

The Freshwater Lake has carried a persistent green haze without becoming opaque or collapsing. The working interpretation is that suspended algae are using nutrients released during the plant transition while young Tapegrass roots and builds enough biomass to pull more of those nutrients back out of the water column.

The Freshwater Lake has maintained a consistent green tint in the water column since closure. After weeks of observation, this wasn't classified as a bloom event. Visibility held, the biological community stayed stable, and the suspended algae appeared to be part of the lake's nutrient cycling rather than a sign of trouble. This entry documents the reasoning behind leaving it alone.

In the Seagrass Meadow, egg-laying behavior revealed that two cerith-type snail patterns may be present. One snail was observed laying single dots in a clean semicircle, connecting a mystery egg pattern to a specific animal even though successful recruitment still appears unlikely in a plankton-feeding biome.

A Smokey Oak Millipede has been repeatedly observed feeding across the terrestrial biomes since August 2025, and a second individual was added about a month before this record. Their persistence matters because they are breaking down dead plant matter and pushing nutrients back into the closed system.

Twenty days after closure, the water cycle is working but not efficiently enough. Humidity lingers on the glass, condensation forms slower than expected, and the atmosphere needs testing before more complexity is added. This entry documents an insulation experiment designed to isolate one variable and learn whether temperature control at the atmosphere level can improve rainfall efficiency inside the sealed system.

White mycelium-like clusters along the Lowland Meadow soil line have stayed stable for about three months instead of disappearing quickly. If the patch remains balanced, it may represent a more permanent decomposer network moving nutrients through meadow soil.

A legume is spreading through the Lowland Meadow, adding a potential nitrogen-fixing pathway to the closed soil food web. At the same time, brown freckling and patchy leaf color show that the plant is under stress, making it a live test of whether growth or decline will dominate.

Tiny unidentified flies appeared on Tapegrass leaves above the waterline after river-edge plants were collected for the Freshwater Lake. Their role is still unknown: they may become spider prey, establish their own niche, or disappear as the sealed system filters accidental arrivals.

Ramshorn snail shells are showing a clear boundary between older eroded growth from a more acidic lake phase and smoother new growth after conditions improved. The shells preserve a physical record of the Freshwater Lake moving toward healthier pH balance even while algae and haze remain visible.

At about 50 F inside miniBIOTA, a sluggish Florida woods cockroach became an easy target. A Mangrove Tree Crab approached but walked around it to collect nearby leaf litter instead, suggesting the cockroach repellent or prior experience may help this roach persist despite opportunistic predators.

Red House Spiders are reproducing throughout the terrestrial areas even though no new insects are being added and prey remains are rarely visible. Their success points to a hidden flow of small arthropods and micro-prey moving through the closed food web.

Florida woods cockroaches moved into the atmosphere tank after the system was sealed and began leaving waste where rainwater collects. The concern is mechanical: future rain events could carry particles into the rain lines and slowly clog the distribution system, so the fix needs to protect the plumbing without blocking organism movement.

Slough Crayfish are stirring the Freshwater Lake detritus layer, especially along the glass where buildup tends to compact. Their digging keeps nutrients mobile between the sediment and water column, while the newly planted Tapegrass is deep enough to withstand their attempts to reach the roots.

The Slough Crayfish's digging behavior isn't just foraging. It's the primary mechanism preventing sediment compaction and surface biofilm buildup in the sealed lake. Their activity at the glass and substrate keeps the detritus cycle active and the water column from stratifying. Without them, the lake's surface begins to seal over.

Before sealing the system, the Freshwater Lake needed a plant reset. Creeping primrose-willow had made the water clear by absorbing nutrients aggressively, but it also locked the lake into a dense tangle. Replacing it with Tapegrass reopened the water column and revealed active microcrustaceans moving through the new nutrient haze.

In the days before the Freshwater Lake was sealed, Creeping Primrose Willow was replaced with a species better suited to closed-system conditions. This entry records the decision and the lake's plant baseline on the day of closure, the starting point from which the sealed system would build its ecology.