Which Mediterranean Sea regions have the highest primary production?

In the Mediterranean Sea, primary production is generally limited by a scarcity of plant nutrients such as nitrates, nitrites, and phosphates. While the Levant and the Ionian Basin exhibit the lowest levels of productivity, the highest primary-production values are observed during the spring months (March–May) off the Egyptian coast. This increased productivity in that specific region is attributed to the influence of the Nile River's outflow, which provides necessary nutrients to the local waters.1