Read food webs in ManYue: follow energy arrows from food to consumer

Food-web arrows normally represent energy transfer, not which way an animal swims. Read an original simplified food web in ManYue, matching food and consumers from its legend before checking branches and paths. Nodes are teaching categories, not a survey of a real habitat. The app displays material without identifying organisms or guiding releases, fishing or ecosystem modification.

State what the arrows mean before tracing

Use an original or authorised page and copy title, location and legend. Here arrows point from eaten resource to consumer, with algae, zooplankton, small fish and large fish. Draw three chain links plus a stipulated algae-to-small-fish branch. This is a simplified teaching network, not every fish’s diet. Page height does not determine feeding relation. A source with a different arrow convention must be recorded and interpreted separately.

Translate each arrow into a full sentence

Read algae to zooplankton as zooplankton receiving energy by eating algae; zooplankton to small fish as small fish feeding on that group; and small to large fish as large fish eating small fish. Match each sentence to its edge, never reversing it into algae eating zooplankton. These stipulated links provide no universal species diet, frequency, dietary percentage or population count.

Treat a branch as another route, not a split animal

The algae-to-small-fish branch supplies another stipulated food route while the route through zooplankton remains. Do not delete one to force a single chain. A line fork without a node adds no organism, and two incoming links do not automatically create two populations. List four node categories and four edges before paths. One fish icon is not proof of one individual in nature.

Trace two different paths from the same source

From algae to large fish, the example has a three-edge route through zooplankton and small fish, and a two-edge route through small fish alone. Interpret each edge rather than erase intermediate nodes. Path length counts stipulated stages, not energy magnitude. Without efficiencies or flows, do not calculate percentages from unexplained line widths or transfer speed from spacing between nodes.

The two paths do not mean algae energy is duplicated identically and delivered twice. Branches specify relationships, not quantified contributions, losses or timing. A separate quantitative source would need matching units and time windows before addition. This diagram supports a path list, not an invented total-energy answer.

Keep trophic labels conditional on food sources

With multiple food sources, retain all edges before reading the author’s trophic classification; page rows are not fixed trophic levels. Producers create organic matter available to consumers, while a separately depicted solar input is not an animal eating algae. Omitted decomposers are an omission in this simplified diagram, not proof that decomposition is absent in reality or that energy circulates indefinitely without dissipation.

Check labels and visible links in the comic

Read the whole network in ManYue, then zoom each arrow’s tail and tip to verify labels and targets. A line crossing without a junction convention is not an added organism or route. An arrow obscured by a balloon remains unresolved. If dialogue claims a single food source while another edge exists, preserve both facts before deciding whether this is character error, simplification or a mistake. Paper numbering suffices without an in-app annotation tool.

Check chase arrows against energy arrows

A chase arrow from large fish toward small fish can oppose a food-web energy arrow because the diagrams serve different purposes. Check title, legend and captions before declaring an error. Correct unsupported individual counts or energy estimates from line lengths separately. Keep the source and checklist rather than delete the work. An original four-node diagram suffices for help, without unauthorised survey disclosure or claims of a real feeding experiment.

Leave and return to reconstruct four edges and two paths

Leave and return, independently reading all four edges and both algae-to-large-fish paths from the legend. Preserve arrow convention, node categories, feeding edges, paths, unspecified quantities and unknowns. Explain in full sentences which food supplies which consumer, and what real-world conclusions the model does not provide. Retrace after new nodes or conventions; these four categories are not a universal exhaustive inventory of every habitat.

Related guides and sources

ManYue pictured flowcharts: distinguish branches, merges and loops from page order; ManYue rooted-tree reading: trace branch relationships rather than tip order.

Checked on November 13, 2026: Apple public information lists ManYue 2.0.5, requiring iOS / iPadOS 15.0 or later. See the official App Store for published capabilities; verify specific controls in the installed version.

Method reference: NOAA: aquatic food webs and energy arrows. Samples, passages and controls are original exercises. Sources establish definitions and checking methods rather than new automatic analysis in the app. Manual records may be kept externally, and unknown fields should remain explicit. This article does not claim step-by-step testing on a physical device, private server or every output environment.