Monitoring Native Bees

1. How far into the field should one monitor?

  • If the goal of the study is to look at (1) which pollinators are visiting the crop or (2) which pollinators are found in both the enhanced area and the crop, then sampling should occur at both the edge and the center of the field. (Studies in almonds found that there is a dramatic drop off in the abundance and diversity of native bees in the interior of the orchard (100m in from the edge) compared against the edge of the orchard. Studies in tomato fields saw a smaller drop off.)
  • Prediction = Fields near natural habitat will have more bees at the edge and fewer in the interior of the field. Fields far from natural habitat will have few bees at the edge and few to no bees in the interior.

2. Should monitoring occur if weather conditions are not ideal?

  • You will only be able to compare data from similar sampling conditions. If you are sampling in a season when weather is often overcast or rainy (e.g. during the almond bloom) look at the weather forecast and plan to sample on the best days. If there are no ideal weather days sample in sub-optimal conditions. Always note weather conditions.

3. Are there free aerial photos that can be used to view a study site and mark transect locations?


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