Seven-day weather gave no clear repeated change in insect catch temperature slopes in Sweden and Madagascar in 2019-2020

We tested whether a fixed seven-day weather window changed temperature slopes compared with the actual insect collection interval. Four models used 5,805 measured catches in Sweden and Madagascar in 2019-2020. All four corrected intervals for the paired slope change included zero. Mean absolute temperature differences were 0.15-0.18 C in Sweden and 0.01 C in Madagascar. Most collection intervals were seven integer days. A shorter time-block model gave a clear change in later Sweden. The results do not establish that windows are equivalent. One survey year per country, selected catches, coarse weather and few time clusters limit inference. We provide code, source hashes, aggregate results and direct window checks.

insect biomass · weather windows · observation bias · temperature · collection effort · regional replication