Reading path: Underwater images and evidence →
State the claim clearly
A useful evidence note begins with the specific claim you are evaluating, written in your own words. Avoid broad labels such as “ocean change” or “species behavior.” A focused claim might describe a measured difference between two sampled stations or a proposed relationship between an environmental condition and an organism’s presence.
Keep the claim separate from your reaction to it. If you think a result may matter for conservation or monitoring, record that as a question or implication after documenting the evidence. This separation helps prevent a plausible concern from being mistaken for something the paper directly tested.
Record the supporting result
Next, summarize the result that supports the claim and point to where it appears. Include the relevant figure, table, or section if possible. Use the paper’s units and define the measured quantity in plain language. For example, say whether values are counts, proportions, sensor readings, or model estimates, rather than using a vague phrase like “levels increased.”
Name the evidence type and study setting. Was the result based on field observations, an experiment, a model, or a combination? Include the place, period, and sample scale that matter for interpretation. “Three stations sampled in late season” gives a reader a better sense of scope than “coastal observations.” These details also help you judge whether a finding applies to the question you have in mind.
Add limits and qualifications
Record the authors’ uncertainty language and stated limitations. Note whether the result is described as a possible explanation, a recurring pattern, or a direct measurement. If the study did not test a proposed mechanism, say that. Also distinguish the paper’s own limitations from questions you noticed while reading, so your note does not attribute your evaluation to the authors.
A compact example might read: “Claim: counts differed between the two sampled sites. Result: image-based observations showed more detections at the outer site during the survey period. Context: two stations, one season. Limit: visibility differed and the paper does not establish why counts varied.” The structure stays brief while preserving the boundaries of the evidence.
Make the source retraceable
Finish with enough citation information to find the source again: authors, year, title, journal or publisher, and a stable link or identifier when available. If your note relies on a particular figure or cited study, record that location too. Avoid depending on a browser tab, saved quote, or vague memory of where you encountered the result.
A concise evidence note should let you answer four questions later: What was claimed? What result supports it? Under what conditions was it obtained? What limits the interpretation? Keep the wording plain and the record consistent across papers. This small habit makes comparisons more reliable and helps you communicate marine research without turning a narrow observation into a broader conclusion.
Have a correction or a source to suggest? Send a note →