Table 2 Effort performed by platform type and Beaufort sea-state per sector in the North Atlantic Ocean.

From: Deep ocean drivers better explain habitat preferences of sperm whales Physeter macrocephalus than beaked whales in the Bay of Biscay

 

Total survey effort (km and %)

Total aerial effort (km)

Total shipboard effort (km)

Total effort by Beaufort sea-state class (km)

0–1

1–2

2–3

3–4

4–7

Study area

150,400

79,100

53%

71,250

47%

35,400

24%

41,400

27%

37,500

25%

23,500

16%

12,600

8%

  1. This table presents the total effort conducted in each sector broken down by platform type and Beaufort sea-state. Beaufort sea-state values reported with decimals in the surveys were rounded up. For the analyses, all segments with Beaufort sea-state > 4 were excluded.
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