Volume 2. Biological and nutrient chemistry data
 from principal participating ships,
first survey cruise, February-March 1967

Love, C. M. (Ed.) (1971). Biological and nutrient chemistry data from principal participating ships, first survey cruise, February-March 1967. EASTROPAC Atlas, vol. 2. Washington, D. C.: National Marine Fisheries Service.

Front cover
Inside front cover
Notice to recipients
Errata
Errata 2, cont.
Title page, cont.

INTRODUCTION. By Cuthbert M. Love
List of Figures iv, v, vi, vii

Reference maps and track charts

FIGURE RM-a. Reference map of the main portion of the EASTROPAC area.
FIGURE RM-b. Reference map of the southern coastal portion of the EASTROPAC area.
FIGURE 10-TC-a. Locations of stations occupied by participating ships in the main portion of the EASTROPAC area during the first survey period, February-March 1967.
FIGURE 10-TC-b. Locations of stations occupied by participating ships in the southern coastal portion of the EASTROPAC area during the first survey period, February-March 1967.

Nutrient chemistry

FIGURE 10-P-10. Phosphate-phosphorus (µg-at/l) at 10 meters, February-March 1967.
FIGURE 10-Si-10. Silicate-silicon (µg-at/l) at 10 meters, February-March 1967.
FIGURE 10-NO₃-10. Nitrate-nitrogen (µg-at/l) at 10 meters, February-March 1967.
FIGURE 10-NO₂-10. Nitrite-nitrogen (µg-at/l) at 10 meters, February-March 1967.
FIGURE 10-NH₃-10. Ammonia-nitrogen (µg-at/l) at 10 meters, February-March 1967.
FIGURE 10-P-100. Phosphate-phosphorus (µg-at/l) at 100 meters, February-March 1967.
FIGURE 10-Si-100. Silicate-silicon (µg-at/l) at 100 meters, February-March 1967.
FIGURE 10-NO₃-100. Nitrate-nitrogen (µg-at/l) at 100 meters, February-March 1967.
FIGURE 10-NH₃-100. Ammonia-nitrogen (µg-at/l) at 100 meters, February-March 1967.

Phytoplankton

FIGURE 10-Ch-S. Chlorophyll-a (mg/m^₃) at the sea surface, February-March 1967.
FIGURE 10-Ch-ei. Chlorophyll-a (mg/m^₂) integrated over the euphotic layer, February-March 1967.
FIGURE 10-Ch-150i. Chlorophyll-a (mg/m^₂) integrated from the sea surface to 150 meters depth, February-March 1967.
FIGURE 10-Ph-150i. Phaeophytin (mg/m^₂) integrated from the sea surface to 150 meters depth, February-March 1967.
FIGURE 10-PP-S. Primary production (mgC/m^₃/day) at the sea surface, February-March 1967.
FIGURE 10-PP-ei. Primary production (mgC/m^₂/day) integrated over the euphotic layer, February-March 1967.
FIGURE 10-EL. Thickness of the euphotic layer in meters, February-March 1967.

Sightings of birds, tuna schools, and mammals

FIGURE 10-BP. Relative abundance of plankton-feeding birds (birds/mile), February-March 1967.
FIGURE 10-BF. Relative abundance of fish and cephalopod-feeding birds (birds/mile), February-March 1967.
FIGURE SP-1. Sightings of porpoise made aboard EASTROPAC ships during the months October through March.
FIGURE SW-1. Sightings of whales made aboard EASTROPAC ships during the months October through March.
FIGURE ST. Sightings of surface tuna schools made during all EASTROPAC cruises.

Zooplankton and micronekton

FIGURE 10-FCp. Distribution of standing stock (ml/1000m^₃) of total fish and cephalopods taken in night micronekton hauls during February-March 1967.
FIGURE 10-Cr. Distribution of standing stock (ml/1000m^₃) of total crustaceans taken in night micronekton hauls during February-March 1967.
FIGURE 10-Nk. Distribution of standing stock (ml/1000m^₃) of total micronekton taken in night micronekton hauls during February-March 1967.
FIGURE 10-ZhN. Distribution of standing stock (ml/1000m^₃) of zooplankton taken in 50-cm net hauls at night, February-March 1967.
FIGURE 10-Z1N. Distribution of standing stock (ml/1000m^₃) of zooplankton taken in 1-m net hauls at night, February-March 1967.
FIGURE 10-ZhD. Distribution of standing stock (ml/1000m^₃) of zooplankton taken in 50-cm net hauls during the day, February- March 1967.
FIGURE 10-Z1D. Distribution of standing stock (ml/1000m^₃) of zooplankton taken in 1-m net hauls during the day, February-March 1967.

Fish larvae

FIGURE 10-FLN. Total fish larvae (number/haul) taken in 1-m oblique plankton hauls at night during February-March 1967.
FIGURE 10-FLD. Total fish larvae (number/haul) taken in 1-m oblique plankton hauls during the day, February-Match 1967.
FIGURE 10-FE. Total fish eggs (number/haul) taken in 1-m oblique plankton hauls during February-March 1967.
FIGURE 10-FS. Total skipjack tuna, Katsuwonus pelamis, larvae (number/haul) taken in 1-m oblique plankton hauls during February-March 1967.
FIGURE 10-FA. Total frigate mackerel, Auxis, larvae (number/haul) taken in 1-m oblique plankton hauls during February-March 1967.
FIGURE 10-FC. Total dolphin (fish), Coryphaena, larvae (number/haul) taken in 1-m oblique plankton hauls during February-March 1967.
FIGURE 10-FMN. Total myctophid larvae (number/haul) taken in 1-m oblique plankton hauls at night during February-March 1967.
FIGURE 10-FMD. Total myctophid larvae (number/haul) taken in 1-m oblique plankton hauls during the day, February-March 1967.
FIGURE 10-FGN. Total gonostomatid and sternoptychid larvae (number/haul) taken in 1-m oblique plankton hauls at night during February-March 1967.
FIGURE 10-FGD. Total gonostomatid and sternoptychid larvae (number/haul) taken in 1-m oblique plankton hauls during the day, February-March 1967.

Nutrient chemistry

FIGURE 11-P-vl. Vertical distribution of phosphate-phosphorus (µg-at/l) along 119° W from 28°36' N to 6°21' S, January 25-February 9, 1967.
FIGURE 11-Si-vl. Vertical distribution of silicate-silicon (µg-at/l) along 119° W from 28°36' N to 6°21' S, January 25-February 9, 1967.
FIGURE 11-P-v2. Vertical distribution of phosphate-phosphorus (µg-at/l) along 119° W from 1°14' S to 20°00' S, February 7-14, 1967.
FIGURE 11-Si-v2. Vertical distribution of silicate-silicon (µg-at/l) along 119° W from 1°14' S to 20°00' S, February 7-14, 1967.
FIGURE 11-P-v3. Vertical distribution of phosphate-phosphorus (µg-at/l) along 20° S, February 14-16, 1967.
FIGURE 11-Si-v3. Vertical distribution of silicate-silicon (µg-at/l) along 20° S, February 14-16, 1967.
FIGURE 11-P-v4. Vertical distribution of phosphate-phosphorus (µg-at/l) along 126° W from 19°59' S to 6°38' S, February 16-21, 1967.
FIGURE 11-Si-v4. Vertical distribution of silicate-silicon (µg-at/l) along 126° W from 19°59' S to 6°38' S, February 16-21, 1967.
FIGURE 11-P-v5. Vertical distribution of phosphate-phosphorus (µg-at/l) along 126° W from 12°42' S to 20°01' N, February 19-March 2, 1967.
FIGURE 11-Si-v5. Vertical distribution of silicate-silicon (µg-at/l) along 126° W from l2°42' S to 20°01' N, February 19-March 2, 1967.

FIGURE 11-NO₃-v1. Vertical distribution of nitrate-nitrogen (µg-at/l) along 119° W from 28°36' N to 6°21' S, January 25-February 9, 1967.
FIGURE 11-NO₂-v1. Vertical distribution of nitrite-nitrogen (µg-at/l) along 119° W from 28°36' N to 6°21' S, January 25-February 9, 1967.
FIGURE 11-NO₃-v2. Vertical distribution of nitrate-nitrogen (µg-at/l) along 119° W from 1°14' S to 20°00' S, February 7-14, 1967.
FIGURE 11-NO₂-v2. Vertical distribution of nitrite-nitrogen (µg-at/1) along 119° W from 1°14' S to 20°00' S, February 7-14, 1967.
FIGURE 11-NO₃-v3. Vertical distribution of nitrate-nitrogen (µg-at/l) along 20° S, February 14-16, 1967.
FIGURE 11-NO₂-v3. Vertical distribution of nitrite-nitrogen (µg-at/l) along 20° S, February 14-16, 1967.
FIGURE 11-NO₃-v4. Vertical distribution of nitrate-nitrogen (µg-at/l) along 126° W from 19°59' S to 6°38' S, February 16-21, 1967.
FIGURE 11-NO₂-v4. Vertical distribution of nitrite-nitrogen (µg-at/l) along 126° W from 19°59' S to 6°38' S, February 16-21, 1967.
FIGURE 11-NO₃-v5. Vertical distribution of nitrate-nitrogen (µg-at/l) along 126° W from 12°42' S to 20°01' N, February 19-March 2, 1967.
FIGURE 11-NO₂-v5. Vertical distribution of nitrite-nitrogen (µg-at/l) along 126° W from 12°42' S to 20°01' N, February 19-March 2, 1967.

Phytoplankton

FIGURE 11-Ch-vl. Vertical distribution of chlorophyll-a (mg/m^₃) along 119° W, from 20°00' N to 6°21' S, January 28-February 9, 1967.
FIGURE 11-Ph-v1. Vertical distribution of phaeophytin (mg/m^₃) along 119° W, from 20°00' N to 6°21' S, January 28-February 9, 1967.
FIGURE 11-PP-v1. Vertical distribution of primary production (mgC/m^₃/day) along 119° W, from 20°00' N to 6°21' S, January 28-February 9, 1967.
FIGURE 11-Ch-v2. Vertical distribution of chlorophyll-a (mg/m^₃) along 119° W, from 1°14' S to 20°00' S, February 7-14, 1967.
FIGURE 11-Ph-v2. Vertical distribution of phaeophytin (mg/m^₃) along 119° W, from 1°14' S to 20°00' S, February 7-14, 1967.
FIGURE 11-PP-v2. Vertical distribution of primary production (mgC/m^₃/day) along 119° W, from 1°14' S to 20°00' S, February 7-14, 1967.
FIGURE 11-Ch-v3. Vertical distribution of chlorophyll-a (mg/m^₃) along 20° S, February 14-16, 1967.
FIGURE 11-Ph-v3. Vertical distribution of phaeophytin (mg/m^₃) along 20° S, February 14-16, 1967.
FIGURE 11-PP-v3. Vertical distribution of primary production (mgC/m^₃/day) along 20° S, February 14-16,1967.
FIGURE 11-Ch-v4. Vertical distribution of chlorophyll-a (mg/m^₃) along 126° W, from 19°59' S to 6°38' S, February 16-21, 1967.
FIGURE 11-Ph-v4. Vertical distribution of phaeophytin (mg/m^₃) along 126° W, from 19°59' S to 6°38' S, February 16-21, 1967.
FIGURE 11-PP-v4. Vertical distribution of primary production (mgC/m^₃/day) along 126° W, from 19°59' S to 6°38' S, February 16-21, 1967.
FIGURE 11-Ch-v5. Vertical distribution of chlorophyll-a (mg/m^₃) along 126° W, from 12°42' S to 20°01' N, February 19-March 2, 1967.
FIGURE 11-Ph-v5. Vertical distribution of phaeophytin (mg/m^₃) along 126° W, from 12°42' S to 20°01' N, February 19-March 2, 1967.
FIGURE 11-PP-v5. Vertical distribution of primary production (mgC/m^₃/day) along 126° W, from 12°42' S to 20°01' N, February 19-March 2, 1967.

Nutrient chemistry

FIGURE 12-P-v2. Vertical distribution of phosphate-phosphorus (µg-at/l) along a section from 12° N, 112° W to Manzanillo, February 12-16, 1967.
FIGURE 12-Si-v2. Vertical distribution of silicate-silicon (µg-at/l) along a section from 12° N, 112° W to Manzanillo, February 12-16, 1967.
FIGURE 12-P-v3. Vertical distribution of phosphate-phosphorus (µg-at/l) along a section from Acapulco to 12° N, 105° W, February 19-21, 1967.
FIGURE 12-Si-v3. Vertical distribution of silicate-silicon (µg-at/l) along a section from Acapulco to 12° N, 105° W, February 19-21, 1967.
FIGURE 12-P-v4. Vertical distribution of phosphate-phosphorus (µg-at/l) along 105° W, February 21-March 6, 1967.
FIGURE 12-Si-v4. Vertical distribution of silicate-silicon (µg-at/l) along 105° W, February 21-March 6, 1967.
FIGURE 12-P-v6. Vertical distribution of phosphate-phosphorus (µg-at/l) along 112° W, March 9-21, 1967.
FIGURE 12-Si-v6. Vertical distribution of silicate-silicon (µg-at/l) along 112° W, March 9-21, 1967.

FIGURE 12-NO₃-v2. Vertical distribution of nitrate-nitrogen (µg-at/l) along a section from 12° N, 112° W to Manzanillo, February 12-16, 1967.
FIGURE 12-NO₂-v2. Vertical distribution of nitrite-nitrogen (µg-at/l) along a section from 12° N, I12° W, to Manzanillo, February 12-16, 1967.
FIGURE 12-NO₃-v3. Vertical distribution of nitrate-nitrogen (µg-at/l) along a section from Acapulco to 12° N, 105° W, February 19-21, 1967.
FIGURE 12-NO₂-v3. Vertical distribution of nitrite-nitrogen (µg-at/l) along a section from Acapulco to 12° N, 105° W, February 19-21, 1967.
FIGURE 12-NO₃-v4. Vertical distribution of nitrate-nitrogen (µg-at/I) along 105° W, February 21-March 6, 1967.
FIGURE 12-NO₂-v4. Vertical distribution of nitrite-nitrogen (µg-at/l) along 105° W, February 21-March 6, 1967.
FIGURE 12-NO₃-v6. Vertical distribution of nitrate-nitrogen (µg-at/l) along 112° W, March 9-21, 1967.
FIGURE 12-NO₂-v6. Vertical distribution of nitrite-nitrogen (µg-at/l) along 112° W, March 9-21, 1967.

Phytoplankton

FIGURE 12-Ch-v2. Vertical distribution of chlorophyll-a (mg/m^₃) along a section from 12 N, 112° W to Manzanillo, February 12-16, 1967.
FIGURE 12-Ph-v2. Vertical distribution of phaeophytin (mg/m^₃) along a section from 12° N, 112° W, to Manzanillo, February 12-16, 1967.
FIGURE 12-Ch-v3. Vertical distribution of chlorophyll-a (mg/m^₃) along a section from Acapulco to 12° N, 105° W, February 19-21, 1967.
FIGURE 12-Ph-v3. Vertical distribution of phaeophytin (mg/m^₃) along a section from Acapulco to 12° N, 105° W, February 19-21, 1967.
FIGURE 12-Ch-v4. Vertical distribution of chlorophyll-a (mg/m^₃) along 105° W, February 21-March 6, 1967.
FIGURE 12-Ph-v4. Vertical distribution of phaeophytin (mg/m^₃) along 105° W, February 21-March 6, 1967.
FIGURE 12-Ch-v6. Vertical distribution of chlorophyll-a (mg/m^₃) along 112° W, March 9-21, 1967.
FIGURE 12-Ph-v6. Vertical distribution of phaeophytin (mg/m^₃) along 112° W, March 9-21, 1967.

Nutrient chemistry

FIGURE 13-P-vl. Vertical distribution of phosphate-phosphorus (µg-at/l) along 88° W, February 1-4, 1967.
FIGURE 13-P-v6. Vertical distribution of phosphate-phosphorus (µg-at/l) along 95° W, March 17-20, 1967.
FIGURE 13-Si-v6. Vertical distribution of silicate-silicon (µg-at/l) along 95° W, March 17-20, 1967.
FIGURE 13-P-v2. Vertical distribution of phosphate-phosphorus (µg-at/l) along 92° W, February 7-21, 1967.
FIGURE 13-Si-v2. Vertical distribution of silicate-silicon (µg-at/l) along 92° W, February 18-21, 1967.
FIGURE 13-P-v3. Vertical distribution of phosphate-phosphorus (µg-at/l) along 20° S, February 21-23, 1967.
FIGURE 13-Si-v3. Vertical distribution of silicate-silicon (µg-at/l) along 20° S, February 21-23, 1967.
FIGURE 13-P-v5. Vertical distribution of phosphate-phosphorus (µg-at/l) along a section from Acapulco to 12° N, 105° W, March 13-15, 1967.
FIGURE 13-Si-v5. Vertical distribution of silicate-silicon (µg-at/l) along a section from Acapulco to 12° N, 105° W, March 13-15, 1967.
FIGURE 13-P-v4. Vertical distribution of phosphate-phosphorus (µg-at/l) along 98° W, February 23-March 8, 1967.
FIGURE 13-Si-v4. Vertical distribution of silicate-silicon (µg-at/l) along 98° W, February 23-March 8, 1967.

FIGURE 13-NO₃-vl. Vertical distribution of nitrate-nitrogen (µg-at/l) along 88° W, February 1-4, 1967.
FIGURE 13-NO₃-v6. Vertical distribution of nitrate-nitrogen (µg-at/l) along 95° W, March 17-20, 1967.
FIGURE 13-NO₂-v6. Vertical distribution of nitrite-nitrogen (µg-at/l) along 95° W, March 17-20, 1967.
FIGURE 13-NO₃-v2. Vertical distribution of nitrate-nitrogen (µg-at/l) along 92° W, February 7-21, 1967.
FIGURE 13-NO₃-v3. Vertical distribution of nitrate-nitrogen (µg-at/l) along 20° S, February 21-23, 1967.
FIGURE 13-NO₃-v5. Vertical distribution of nitrate-nitrogen (µg-at/l) along a section from Acapulco to 12° N, 105° W, March 13-15, 1967.
FIGURE 13-NO₂-v5. Vertical distribution of nitrite-nitrogen (µg-at/l) along a section from Acapulco to 12° N, 105° W, March 13-15, 1967.
FIGURE 13-NO₃-v4. Vertical distribution of nitrate-nitrogen (µg-at/l) along 98° W, February 23-March 8, 1967.
FIGURE 13-NO₂-v4. Vertical distribution of nitrite-nitrogen (µg-at/l) along 98° W, February 27-March 8, 1967.

Phytoplankton

FIGURE 13-Ch-v1. Vertical distribution of chlorophyll-a (mg/m^₃) along 88° W, February 1-4, 1967.
FIGURE 13-Ph-vl. Vertical distribution of phaeophytin (mg/m^₃) along 88° W, February 1-4, 1967.
FIGURE 13-Ch-v6. Vertical distribution of chlorophyll-a (mg/m^₃) along 95° W, March 17-20, 1967.
FIGURE 13-Ph-v6. Vertical distribution of phaeophytin (mg/m^₃) along 95° W, March 17-20, 1967.
FIGURE 13-Ch-v2. Vertical distribution of chlorophyll-a (mg/m^₃) along 92° W, February 7-21, 1967.
FIGURE 13-Ph-v2. Vertical distribution of phaeophytin (mg/m^₃) along 92° W, February 7-21, 1967.
FIGURE 13-Ch-v3. Vertical distribution of chlorophyll-a (mg/m^₃) along 20° S, February 21-23,1967.
FIGURE 13-Ph-v3. Vertical distribution of phaeophytin (mg/m^₃) along 20° S, February 21-23, 1967.
FIGURE 13-Ch-v5. Vertical distribution of chlorophyll-a (mg/m^₃) along a section from Acapulco to 12° N, 105° W, March 13-15, 1967.
FIGURE 13-Ph-v5. Vertical distribution of phaeophytin (mg/m^₃) along a section from Acapulco to 12° N, 105° W, March 13-15, 1967.
FIGURE 13-Ch-v4. Vertical distribution of chlorophyll-a (mg/m^₃) along 98° W, February 23-March 8, 1967.
FIGURE 13-Ph-v4. Vertical distribution of phaeophytin (mg/m^₃) along 98° W, February 23-March 8, 1967.

Nutrient chemistry

FIGURE 14-NO₃-v1. Vertical distribution of nitrate-nitrogen (µg-at/l) along a southwest-northeast section in the northern portion of the Panama Bight from 79°44' W to 78°43' W, January 31, 1967.
FIGURE 14-NO₃-v2. Vertical distribution of nitrate-nitrogen (µg-at/l) along a section in the Panama Bight near the coasts of Panama and Colombia from 7°35' N to 6°58' N, January 31-February 1, 1967.
FIGURE 14-P-v3. Vertical distribution of phosphate-phosphorus (µg-at/l) along a northeast-southwest section in the Panama Bight from the coast of Colombia to 5°43' N, 79°22' W, February 1, 1967.
FIGURE 14-NO₃-v3. Vertical distribution of nitrate-nitrogen (µg-at/l) along a northeast-southwest section in the Panama Bight from the coast of Colombia to 5°43' N, 79°22' W, February 1, 1967.
FIGURE 14-P-v4. Vertical distribution of phosphate-phosphorus (µg-at/l) along a northwest-southeast section in the central portion of the Panama Bight from 5°43' N, 79°22' W to the coast of Colombia, February 1-2, 1967.
FIGURE 14-NO₃-v4. Vertical distribution of nitrate-nitrogen (µg-at/l) along a northwest-southeast section in the central portion of the Panama Bight from 5°43' N, 79°22' W to the coast of Colombia, February 1-2, 1967.
FIGURE 14-P-v5. Vertical distribution of phosphate-phosphorus (µg-at/l) along a section in the Panama Bight near the coast of Colombia from 4°10' N to 2°45' N, February 2-3, 1967.
FIGURE 14-NO₃-v5. Vertical distribution of nitrate-nitrogen (µg-at/l) along a section in the Panama Bight near the coast of Colombia from 4°10' N to 2°45' N, February 2-3, 1967.
FIGURE 14-NO₃-v6. Vertical distribution of nitrate-nitrogen (µg-at/l) along a southeast-northwest section across the Panama Bight from the coast of Colombia to Peninsula de Azuero, Panama, February 3-5, 1967.
FIGURE 14-NO₃-v7. Vertical distribution of nitrate-nitrogen (µg-at/l) along a northeast-southwest section from Isla Coiba, Panama to 5°03' N, 82°18' W, February 5-6, 1967.
FIGURE 14-NO₃-v8. Vertical distribution of nitrate-nitrogen (µg-at/l) along a northwest-southeast section from 5°03' N, 82°18' W to the coast of Ecuador, February 6-8, 1967.
FIGURE 14-NO₃-v9. Vertical distribution of nitrate-nitrogen (µg-at/l) along the Equator from the coast of Ecuador to 81°54' W, February 8-9, 1967.
FIGURE 14-NO₃-v10. Vertical distribution of nitrate-nitrogen (µg-at/l) along 82° W from 0°18' S to 7°27' S, February 9-11, 1967.
FIGURE 14-P-v13. Vertical distribution of phosphate-phosphorus (µg-at/l) along 81°46' W from 11°02' S to 14°37' S, February 14-15, 1967.
FIGURE 14-NO3-v13. Vertical distribution of nitrate-nitrogen (µg-at/l) along 81°46' W from 11°02' S to 14°37' S, February 14-15, 1967.
FIGURE 14-P-v19. Vertical distribution of phosphate-phosphorus (µg-at/l) along 92° W, west of the Galapagos Islands, March 8-9, 1967.
FIGURE 14-NO₃-v19. Vertical distribution of nitrate-nitrogen (µg-at/l) along 92° W, west of the Galapagos Islands, March 8-9, 1967.
FIGURE 14-P-v11. Vertical distribution of phosphate-phosphorus (µg-at/l) along 7°15' S from 81°50' W to the coast of Peru, February 11-12, 1967.
FIGURE 14-NO₃-v11. Vertical distribution of nitrate-nitrogen (µg-at/l) along 7°15' S from 81°50' W to the coast of Peru, February 11-12, 1967.
FIGURE 14-NO₃-v12. Vertical distribution of nitrate-nitrogen (µg-at/l) along a northeast-southwest section from the coast of Peru to 11° S, 81°46' W, February 13-14, 1967.
FIGURE 14-NO₃-v15. Vertical distribution of nitrate-nitrogen (µg-at/l) along the coast of Peru from 15°07' S to 12°27' S, February 17-24, 1967.
FIGURE 14-P-v16. Vertical distribution of phosphate-phosphorus (µg-at/l) along a northeast-southwest section from the coast of Peru to 14°30' S, 81°43' W, February 24-25, 1967.
FIGURE 14-NO₃-v16. Vertical distribution of nitrate-nitrogen (µg-at/l) along a northeast-southwest section from the coast of Peru to 14°30' S, 81°43' W, February 24-25, 1967.
FIGURE 14-P-v14. Vertical distribution of phosphate-phosphorus (µg-at/l) along 15° S from 81°46' W to the coast of Peru, February 15-17, 1967.
FIGURE 14-NO₃-v14. Vertical distribution of nitrate-nitrogen (µg-at/l) along 15° S from 81°46' W to the coast of Peru, February 15-17, 1967.
FIGURE 14-P-v17. Vertical distribution of phosphate-phosphorus (µg-at/l) along 14°30' S from 81°43' W to 88°17' W, February 26-27, 1967.
FIGURE 14-NO₃-v17. Vertical distribution of nitrate-nitrogen (µg-at/l) along 14°30' S from 81°43' W to 88°17' W, February 26-27, 1967.
FIGURE 14-P-v25. -Vertical distribution of phosphate-phosphorus (µg-at/l) along 12° S, March 25-26, 1967.
FIGURE 14-NO₃-v25. Vertical distribution of nitrate-nitrogen (µg-at/l) along 12° S, March 25-26, 1967.
FIGURE 14-P-v18. Vertical distribution of phosphate-phosphorus (µg-at/l) along 88°46' W, February 27-March 4, 1967.
FIGURE 14-NO₃-v18. Vertical distribution of nitrate-nitrogen (µg-at/l) along 88°46' W, February 27-March 4, 1967.
FIGURE 14-P-v22. Vertical distribution of phosphate-phosphorus (µg-at/l) along a southwest-northeast section from the Equator at 89°03' W to Puntarenas, March 11-15, 1967.
FIGURE 14-NO₃-v22. Vertical distribution of nitrate-nitrogen (µg-at/l) along a southwest-northeast section from the Equator at 89°03' W to Puntarenas, March 11-15, 1967.
FIGURE 14-P-v23. Vertical distribution of phosphate-phosphorus (µg-at/l) along a northeast-southwest section from the coast of Costa Rica to 3°52' N, 85°57' W, March 18-20, 1967.
FIGURE 14-NO₃-v23. Vertical distribution of nitrate-nitrogen (µg-at/l) along a northeast-southwest section from the coast of Costa Rica to 3°52' N, 85°57' W, March 18-20, 1967.
FIGURE 14-P-v24. Vertical distribution of phosphate-phosphorus (µg-at/l) along 86°19' W, March 20-25, 1967.
FIGURE 14-NO₃-v24. Vertical distribution of nitrate-nitrogen (µg-at/l) along 86°19' W, March 20-25, 1967.
FIGURE 14-P-v26. Vertical distribution of phosphate-phosphorus (µg-at/l) along 84° W, March 26-31, 1967.
FIGURE 14-NO₃-v26. Vertical distribution of nitrate-nitrogen (µg-at/l) along 84° W, March 26-31, 1967.
FIGURE 14-P-v27. Vertical distribution of phosphate-phosphorus (µg-at/l) along a southwest-northeast section from 3°45' N, 83°48' W to Punta Burica, Costa Rica-Panama, March 31-April 2, 1967.
FIGURE 14-NO₃-v27. Vertical distribution of nitrate-nitrogen (µg-at/l) along a southwest-northeast section from 3°45' N, 83°48' W to Punta Burica, Costa Rica-Panama, March 31-April 2, 1967.

Phytoplankton

FIGURE 14-Ch-v10. Vertical distribution of chlorophyll-a (mg/m^₃) along 82° W, from 0°18' S to 7°27' S, February 9-11, 1967.
FIGURE 14-Ph-v10. Vertical distribution of phaeophytin (mg/m^₃) along 82° W from 0°18' S to 7°27' S, February 9-11, 1967.
FIGURE 14-Ch-v16. Vertical distribution of chlorophyll-a (mg/m^₃) along a northeast-southwest section from the coast of Peru to 14°30' S, 81°43' W, February 24-25, 1967.
FIGURE 14-Ph-v16. Vertical distribution of phaeophytin (mg/m^₃) along a northeast-southwest section from the coast of Peru to 14°30' S, 81°43' W, February 24-25, 1967.
FIGURE 14-Ch-v19. Vertical distribution of chlorophyll-a (mg/m^₃) along 92° W, west of the Galapagos Islands, March 8-9, 1967.
FIGURE 14-Ph-v19. Vertical distribution of phaeophytin (mg/m^₃) along 92° W, west of the Galapagos Islands, March 8-9, 1967.
FIGURE 14-Ch-v14. Vertical distribution of chlorophyll-a (mg/m^₃) along 15° S from 81°46' W to the coast of Peru, February 15-17, 1967.
FIGURE 14-Ph-v14. Vertical distribution of phaeophytin (mg/m^₃) along 15° S from 81°46' W to the coast of Peru, February 15-17, 1967.
FIGURE 14-Ch-v17. Vertical distribution of chlorophyll-a (mg/m^₃) along 14°30' S from 81°43' W to 88°17' W, February 26-27, 1967.
FIGURE 14-Ph-v17. Vertical distribution of phaeophytin (mg/m^₃) along 14°30' S from 81°43' W, to 88°17' W, February 26-27, 1967.
FIGURE 14-Ch-v18. Vertical distribution of chlorophyll-a (mg/m^₃) along 88°46' W, February 27-March 4, 1967.
FIGURE 14-Ph-v18. Vertical distribution of phaeophytin (mg/m^₃) along 88°46' W, February 27-March 4, 1967.
FIGURE 14-Ch-v22. Vertical distribution of chlorophyll-a (mg/m^₃) along a southwest-northeast section from the Equator at 89°03' W, to Puntarenas, March 11-15, 1967.
FIGURE 14-Ph-v22. Vertical distribution of phaeophytin (mg/m^₃) along a southwest-northeast section from the Equator at 89°03' W to Puntarenas, March 11-15, 1967.
FIGURE 14-Ch-v23. Vertical distribution of chlorophyll-a (mg/m^₃) along a northeast-southwest section from the coast of Costa Rica to 3°52' N, 85°57' W, March 18-20, 1967,
FIGURE 14-Ph-v23. Vertical distribution of phaeophytin (mg/m^₃) along a northeast-southwest section from the coast of Costa Rica to 3°52' N, 85°57' W, March 18-20, 1967.
FIGURE 14-Ch-v24. Vertical distribution of chlorophyll-a (mg/m^₃) along 86°19' W, March 20-25, 1967.
FIGURE 14-Ph-v24. Vertical distribution of phaeophytin (mg/m^₃) along 86°19' W, March 20-25, 1967.
FIGURE 14-Ch-v26. Vertical distribution of chlorophyll-a (mg/m^₃) along 84° W, March 26-31, 1967.
FIGURE 14-Ph-v26. Vertical distribution of phaeophytin (mg/m^₃) along 84° W, March 26-31, 1967.
FIGURE 14-Ch-v27. Vertical distribution of chlorophyll-a (mg/m^₃) along a southwest-northeast section from 3°45' N, 83°48' W to Punta Burica, Costa Rica-Panama, March 31-April 2, 1967.
FIGURE 14-Ph-v27. Vertical distribution of phaeophytin (mg/m^₃) along a southwest-northeast section from 3°45' N, 83°48' W to Punta Burica, Costa Rica-Panama, March 31-April 2, 1967.