Survey Trends
Longitudinal comparison — Matukutureia - Aerovista
Change Since Previous Survey
+95
Items per catchpit
59% increase
-5%
Plastic percentage
Slight decrease in plastic share
6 mo
Survey interval
Sep 2025 → Mar 2026
+2
Citizen scientists
7 vs 5 in previous survey
Items per Catchpit Over Time
Litter Quantity Trend
Items per catchpit — Matukutureia - Aerovista
Plastics Percentage Trend
Plastic Share of Total Litter
Percentage of items that are plastic materials
Survey Comparison
Interpretation Note
The 59% increase in items per catchpit between September 2025 and March 2026 warrants attention. While the plastics percentage decreased slightly (89% → 84%), the overall volume of litter has risen significantly. This may reflect seasonal patterns, increased activity in the catchment area, or changes in upstream litter sources. Continued monitoring by Te Pu-a-nga Maara will help determine whether this represents a trend or a one-off event.