Volume 6. Biological and nutrient chemistry data
from principal participating ships,
second survey cruise, August-September 1967

 
Love, C. M. (Ed.) (1972). Biological and nutrient chemistry data from principal participating ships, second survey cruise, August-September 1967. EASTROPAC Atlas, vol. 6. Washington, D. C.: National Marine Fisheries Service.

Front cover
Inside front cover
Errata
Title page, cont.

INTRODUCTION By Cuthbert M. Love

List of Figures iv, v, vi

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 40-TC-a. Locations of stations occupied by participating ships in the main portion of the EASTROPAC area during the second survey period, August-September 1967.
FIGURE 40-TC-b. Locations of stations occupied by participating ships in the southern coastal portion of the EASTROPAC area during the second survey period, August-September 1967.

Nutrient chemistry

FIGURE 40-P-10. Phosphate-phosphorus (g-at/l) at 10 meters, August-September 1967.
FIGURE 40-Si-10. Silicate-silicon (g-at/l) at 10 meters, August-September 1967.
FIGURE 40-NO3-10. Nitrate-nitrogen (g-at/l) at 10 meters, August-September 1967.
FIGURE 40-NO2-10. Nitrite-nitrogen (g-at/l) at 10 meters, August-September 1967.
FIGURE 40-NH3-10. Ammonia-nitrogen (g-at/l) at 10 meters, August-September 1967.
FIGURE 40-P-100. Phosphate-phosphorus (g-at/l) at 100 meters, August-September 1967.
FIGURE 40-Si-100. Silicate-silicon (g-at/l) at 100 meters, August-September 1967.
FIGURE 40-NO3-100. Nitrate-nitrogen (g-at/l) at 100 meters, August-September 1967.
FIGURE 40-NH3-100. Ammonia-nitrogen (g-at/l) at 100 meters, August-September 1967.

Phytoplankton

FIGURE 40-Ch-S. Chlorophyll-a (mg/m3) at the sea surface, August-September 1967.
FIGURE 40-Ch-ei. Chlorophyll-a (mg/m2) integrated over the euphotic layer, August-September 1967.
FIGURE 40-Ch-150i. Chlorophyll-a (mg/m2) integrated from the sea surface to 150 meters depth, August-September 1967.
FIGURE 40-Ph-150i. Phaeophytin (mg/m2) integrated from the sea surface to 150 meters depth, August-September 1967.
FIGURE 40-PP-S. Primary production (mgC/m3/day) at the sea surface, August-September 1967.
FIGURE 40-PP-ei. Primary production (mgC/m2/day) integrated over the euphotic layer, August-September 1967.
FIGURE 40-EL. Thickness of the euphotic layer in meters, August-September 1967.

Sightings of birds and marine mammals

FIGURE 40-BP. Relative abundance of plankton-feeding birds (birds/mile), August-September 1967.
FIGURE 40-BF. Relative abundance of fish and cephalopod-feeding birds (birds/mile), August-September 1967.
FIGURE SP-2. Sightings of porpoise made aboard EASTROPAC ships during the months April through September.
FIGURE SW-2. Sightings of whales made aboard EASTROPAC ships during the months April through September.

Zooplankton and micronekton

FIGURE 40-FCp. Distribution of standing stock (ml/1000m3) of total fish and cephalopods taken in night micronekton hauls during August-September 1967.
FIGURE 40-Cr. Distribution of standing stock (ml/1000m3) of total crustaceans taken in night micronekton hauls during August-September 1967.
FIGURE 40-Nk. Distribution of standing stock (ml/l000m3) of total micronekton taken in night micronekton hauls during August-September 1967.
FIGURE 40-ZhN. Distribution of standing stock (ml/1000m3) of zooplankton taken in 50-cm net hauls at night, August-September 1967.
FIGURE 40-Z1N. Distribution of standing stock (ml/1000m3) of zooplankton taken in 1-m net hauls at night, August-September 1967.
FIGURE 40-ZhD. Distribution of standing stock (ml/1000m3) of zooplankton taken in 50-cm net hauls during the day, August-September 1967.
FIGURE 40-Z1D. Distribution of standing stock (ml/1000m3) of zooplankton taken in 1-m net hauls during the day, August-September 1967.

Fish larvae

FIGURE 40-FLN. Total fish larvae (number/haul) taken in 1-m oblique plankton hauls at night during August-September 1967.
FIGURE 40-FLD. Total fish larvae (number/haul) taken in 1-m oblique plankton hauls during the day, August-September 1967.
FIGURE 40-FE. Total fish eggs (number/haul) taken in 1-m oblique plankton hauls during August-September 1967.
FIGURE 40-FS. Total skipjack tuna, Katsuwonus pelamis, larvae (number/haul) taken in 1-m oblique plankton hauls during August-September 1967.
FIGURE 40-FA. Total frigate mackerel, Auxis, larvae (number/haul) taken in 1-m oblique plankton hauls during August-September 1967.
FIGURE 40-FC. Total dolphin (fish), Coryphaena, larvae (number/haul) taken in 1-m oblique plankton hauls during August-September 1967.
FIGURE 40-FMN. Total myctophid larvae (number/haul) taken in 1-m oblique plankton hauls at night during August-September 1967.
FIGURE 40-FMD. Total myctophid larvae (number/haul) taken in 1-m oblique plankton hauls during the day, August-September 1967.
FIGURE 40-FGN. Total gonostomatid and sternoptychid larvae (number/haul) taken in 1-m oblique plankton hauls at night during August-September 1967.
FIGURE 40-FGD. Total gonostomatid and sternoptychid larvae (number/haul) taken in 1-m oblique plankton hauls during the day, August-September 1967.

Nutrient chemistry

FIGURE 45-P-vl. Vertical distribution of phosphate-phosphorus (g-at/l) along 119 W, August 7-20, 1967.
FIGURE 45-P-v3. Vertical distribution of phosphate-phosphorus (g-at/l) along 112 W, August 23-September 7, 1967.
FIGURE 45-P-v5. Vertical distribution of phosphate-phosphorus (g-at/l) along a section from 12 N 112 W to Manzanillo, September 7-10, 1967.
FIGURE 45-P-v6. Vertical distribution of phosphate-phosphorus (g-at/l) along 1930' N from Manzanillo to 11125' W, September 13-15, 1967.

FIGURE 45-Si-v1. Vertical distribution of silicate-silicon (g-at/l) along 119 W, August 7-20, 1967.
FIGURE 45-Si-v3. Vertical distribution of silicate-silicon (g-at/l) along 112 W, August 23-September 7, 1967.
FIGURE 45-Si-v5. Vertical distribution of silicate-silicon (g-at/l) along a section from 12 N, 112 W to Manzanillo, September 7-10, 1967.
FIGURE 45-Si-v6. Vertical distribution of silicate-silicon (g-at/l) along 1930' N, from Manzanillo to 11125' W, September 13-15, 1967.

FIGURE 45-NO3-v1. Vertical distribution of nitrate-nitrogen (g-at/l) along 119 W, August 7-20, 1967.
FIGURE 45-NO3-v3. Vertical distribution of nitrate-nitrogen (g-at/l) along 112 W, August 23-September 7, 1967.
FIGURE 45-NO3-v5. Vertical distribution of nitrate-nitrogen (g-at/l) along a section from 12 N, 112 W to Manzanillo, September 7-10, 1967,
FIGURE 45-NO3-v6. Vertical distribution of nitrate-nitrogen (g-at/l) along 1930' N from Manzanillo to 11125' W, September 13-15, 1967.

FIGURE 45-NO2-v1. Vertical distribution of nitrite-nitrogen (g-at/l) along 119 W, August 7-20, 1967.
FIGURE 45-NO2-v3. Vertical distribution of nitrite-nitrogen (g-at/I) along 112W, August 23-September 7, 1967.
FIGURE 45-NO2-v5. Vertical distribution of nitrite-nitrogen (g-at/l) along a section from 12 N, 112 W to Manzanillo, September 7-10, 1967.
FIGURE 45-NO2-v6. Vertical distribution of nitrite-nitrogen (g-at/l) along 1930' N from Manzanillo to 11125' W, September 13-15,1967.

Phytoplankton

FIGURE 45-Ch-vl. Vertical distribution of chlorophyll-a (mg/m3) along 119 W, August 7-20, 1967.
FIGURE 45-Ph-vl. Vertical distribution of phaeophytin (mg/m3) along 119 W, August 7-20, 1967.
FIGURE 45-PP-v1. Vertical distribution of primary production (mgC/m3/day) along 119 W, August 7-20, 1967.
FIGURE 45-Ch-v3. Vertical distribution of chlorophyll-a (mg/m3) along 112 W, August 23-September 7, 1967.       
FIGURE 45-Ph-v3. Vertical distribution of phaeophytin (mg/m3) along 112 W, August 23-September 7, 1967.       
FIGURE 45-PP-v3. Vertical distribution of primary production (mgC/m3/day) along 112 W, August 23-September 7, 1967.
FIGURE 45-Ch-v5. Vertical distribution of chlorophyll-a (mg/m3) along a section from 12 N, 112 W to Manzanillo, September 7-10, 1967.
FIGURE 45-Ph-v5. Vertical distribution of phaeophytin (mg/m3) along a section from 12 N, 112 W to Manzanillo, September 7-10, 1967.
FIGURE 45-PP-v5. Vertical distribution of primary production (mgC/m3/day) along a section from 12 N, 112 W to Manzanillo, September 7-10, 1967.
FIGURE 45-Ch-v6. Vertical distribution of chlorophyll-a (mg/m3) along 1930' N, from Manzanillo to 11125' W, September 13-15, 1967.
FIGURE 45-Ph-v6. Vertical distribution of phaeophytin (mg/m3) along 1930' N, from Manzanillo to 11125' W, September 13-15, 1967.
FIGURE 45-PP-v6. Vertical distribution of primary production (mgC/m3/day) along 1930' N, from Manzanillo to 11125' W, September 13-15, 1967.

Nutrient chemistry

FIGURE 46-P-v1. Vertical distribution of phosphate-phosphorus (g-at/l) along a section from Acapulco to 12N, 105 W, August 16-19, 1967.
FIGURE 46-Si-vl. Vertical distribution of silicate-silicon (g-at/l) along a section from Acapulco to 12 N, 105 W, August 16-19, 1967.
FIGURE 46-P-v2. Vertical distribution of phosphate-phosphorus (g-at/l) along 105 W, August 19-28, 1967.
FIGURE 46-Si-v2. Vertical distribution of silicate-silicon (g-at/l) along 105 W,, August 19-28, 1967.
FIGURE 46-P-v3. Vertical distribution of phosphate-phosphorus (g-at/l) along 98 W, August 31-September 6, 1967.
FIGURE 46-Si-v3. Vertical distribution of silicate-silicon (g-at/l) along 98 W, August 31-September 6, 1967.
FIGURE 46-P-v4. Vertical distribution of phosphate-phosphorus (g-at/l) along 92 W, September 15-22, 1967.
FIGURE 46-Si-v4. Vertical distribution of silicate-silicon (g-at/l) along 92 W, September 15-22, 1967.

FIGURE 46-NO3-vl. Vertical distribution of nitrate-nitrogen (g-at/l) along a section from Acapulco to 12 N, 105 W, August 16-19, 1967.
FIGURE 46-NO2-vl. Vertical distribution of nitrite-nitrogen (g-at/l) along a section from Acapulco to 12 N, 105 W, August 16-19, 1967.
FIGURE 46-NO3-v2. Vertical distribution of nitrate-nitrogen (g-at/l) along 105 W, August 19-28, 1967.
FIGURE 46-NO2-v2. Vertical distribution of nitrite-nitrogen (g-at/l) along 105 W, August 19-28, 1967.
FIGURE 46-NO3-v3. Vertical distribution of nitrate-nitrogen (g-at/I) along 98 W, August 31-September 6, 1967.
FIGURE 46-NO2-v3. Vertical distribution of nitrite-nitrogen (g-at/l) along 98 W, August 31-September 6, 1967.
FIGURE 46-NO3-v4. Vertical distribution of nitrate-nitrogen (g-at/l) along 92 W, September 15-22, 1967.
FIGURE 46-NO2-v4. Vertical distribution of nitrite-nitrogen (g-at/l) along 92 W, September 15-22, 1967.   

Phytoplankton
FIGURE 46-Ch-v1. Vertical distribution of chlorophyll-a (mg/m3) along a section from Acapulco to 12 N, 105 W, August 16-19, 1967.
FIGURE 46-Ph-v1. Vertical distribution of phaeophytin (mg/m3) along a section from Acapulco to 12 N, 105 W, August 16-19, 1967.
FIGURE 46-PP-v1. Vertical distribution of primary production (mgC/m3/day) along a section from Acapulco to 12 N, 105 W, August 16-19, 1967.
FIGURE 46-Ch-v2. Vertical distribution of chlorophyll-a (mg/m3) along 105 W, August 19-28, 1967.
FIGURE 46-Ph-v2. Vertical distribution of phaeophytin (mg/m3) along 105 W, August 19-28, 1967.   
FIGURE 46-PP-v2. Vertical distribution of primary production (mgC/m3/day) along 105 W, August 19-28, 1967.
FIGURE 46-Ch-v3. Vertical distribution of chlorophyll-a (mg/m3) along 98 W, August 31-September 6, 1967.
FIGURE 46-Ph-v3. Vertical distribution of phaeophytin (mg/m3) along 98 W, August 31-September 6, 1967.
FIGURE 46-PP-v3. Vertical distribution of primary production (mgC/m3/day) along 98 W, August 31- September 6, 1967.
FIGURE 46-Ch-v4. Vertical distribution of chlorophyll-a (mg/m3) along 92 W, September 15-22, 1967.
FIGURE 46-Ph-v4. Vertical distribution of phaeophytin (mg/m3) along 92 W, September 15-22, 1967.
FIGURE 46-PP-v4. Vertical distribution of primary production (mgC/m3/day) along 92 W, September 15-22, 1967.

Nutrient chemistry

FIGURE 47-P-v1. Vertical distribution of phosphate-phosphorus (g-at/l) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, Panama, August 1-2, 1967.
FIGURE 47-Si-v1. Vertical distribution of silicate-silicon (g-at/l) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, Panama, August 1-2, 1967,
FIGURE 47-P-v2. Vertical distribution of phosphate-phosphorus (g-at/l) along a northwest-southeast section in the central portion of the Panama Bight from Peninsula de Azuero, Panama, to the coast of Colombia, August 3-4,1967.
FIGURE 47-Si-v2. Vertical distribution of silicate-silicon (g-at/l) along a northwest-southeast section in the central portion of the Panama Bight from Peninsula de Azuero, Panama, to the coast of Colombia, August 3-4, 1967.
FIGURE 47-P-v7. Vertical distribution of phosphate-phosphorus (g-at/l) along a northeast-southwest section from the coast of Peru to 15 S, 85 W, August 17-19, 1967.
FIGURE 47-Si-v7. Vertical distribution of silicate-silicon (g-at/l) along a northeast-southwest section from the coast of Peru to 15 S, 85 W, August 17-19, 1967.
FIGURE 47-P-v4. Vertical distribution of phosphate-phosphorus (g-at/l) along 82 W, August 6-12, 1967.
FIGURE 47-Si-v4. Vertical distribution of silicate-silicon (g-at/l) along 82 W, August 6-12, 1967.
FIGURE 47-P-v5. Vertical distribution of phosphate-phosphorus (g-at/l) along a southwest-northeast section from 1009' S, 8209' W to the coast of Peru, August 12, 1967.
FIGURE 47-Si-v5. Vertical distribution of silicate-silicon (g-at/l) along a southwest-northeast section from 1009' S, 8209' W to the coast of Peru, August 12, 1967.
FIGURE 47-P-v8. Vertical distribution of phosphate-phosphorus (g-at/l) along 85 W, August 19-28, 1967.
FIGURE 47-Si-v8. Vertical distribution of silicate-silicon (g-at/l) along 85 W, August 19-28, 1967.
FIGURE 47-P-v10. Vertical distribution of phosphate-phosphorus (g-at/l) along 88 W, August 31-September 10, 1967.
FIGURE 47-Si-v10. Vertical distribution of silicate-silicon (g-at/l) along 88 W, August 31-September 10, 1967.
FIGURE 47-P-v12. Vertical distribution of phosphate-phosphorus (g-at/l) along 95 W, September 12-23, 1967.
FIGURE 47-Si-v12. Vertical distribution of silicate-silicon (g-at/l) along 95 W, September 12-23, 1967.

FIGURE 47-NO3-v1. Vertical distribution of nitrate-nitrogen (g-at/l) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, Panama, August 1-2, 1967.
FIGURE 47-NO2-v1. Vertical distribution of nitrite-nitrogen (g-at/l) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, Panama, August 1-2, 1967.
FIGURE 47-NO3-v2. Vertical distribution of nitrate-nitrogen (g-at/l) along a northwest-southeast section in the central portion of the Panama Bight from Peninsula de Azuero, Panama, to the coast of Colombia, August 3-4, 1967.
FIGURE 47-NO2-v2. Vertical distribution of nitrite-nitrogen (g-at/l) along a northwest-southeast section in the central portion of the Panama Bight from Peninsula de Azuero, Panama, to the coast of Colombia, August 3-4, 1967.
FIGURE 47-NO3-v7. Vertical distribution of nitrate-nitrogen (g-at/l) along a northeast-southwest section from the coast of Peru to 15 S, 85 W, August 17-19, 1967.
FIGURE 47-NO2-v7. Vertical distribution of nitrite-nitrogen (g-at/I) along a northeast-southwest section from the coast of Peru to 15 S, 85 W, August 17-19, 1967.
FIGURE 47-NO3-v4. Vertical distribution of nitrate-nitrogen (g-at/l) along 82 W, August 6-12, 1967.
FIGURE 47-NO2-v4. Vertical distribution of nitrite-nitrogen (g-at/I.) along 82 W, August 6-12, 1967.
FIGURE 47-NO3-v5. Vertical distribution of nitrate-nitrogen (g-at/l) along a southwest-northeast section from 1009' S, 8209' W to the coast of Peru, August 12, 1967.
FIGURE 47-NO2-v5. Vertical distribution of nitrite-nitrogen (g-at/l) along a southwest-northeast section from 1009' S, 8209' W to the coast of Peru, August 12, 1967.
FIGURE 47-NO3-v8. Vertical distribution of nitrate-nitrogen (g-at/l) along 85 W, August 19-28, 1967.
FIGURE 47-NO2-v8. Vertical distribution of nitrite-nitrogen (g-at/l) along 85 W, August 19-28, 1967.
FIGURE 47-NO3-v10. Vertical distribution of nitrate-nitrogen (g-at/l) along 88 W, August 31-September 10, 1967.
FIGURE 47-NO2-v10. Vertical distribution of nitrite-nitrogen (g-at/l) along 88 W, August 31-September 10, 1967.
FIGURE 47-NO3-v12. Vertical distribution of nitrate-nitrogen (g-at/l) along 95 W, September 12-23, 1967.
FIGURE 47-NO2-v12. Vertical distribution of nitrite-nitrogen (g-at/l) along 95 W, September 12-23, 1967.

Phytoplankton

FIGURE 47-Ch-v2. Vertical distribution of chlorophyll-a (mg/m3) along a northwest-southeast section in the central portion of the Panama Bight from Peninsula de Azuero, Panama, to the coast of Colombia, August 3-5, 1967.
FIGURE 47-Ph-v2. Vertical distribution of phaeophytin (mg/m3) along a northwest-southeast section in the central portion of the Panama Bight from Peninsula de Azuero, Panama, to the coast of Colombia, August 3-5, 1967.
FIGURE 47-Ch-v7. Vertical distribution of chlorophyll-a (mg/m3) along a northeast-southwest section from the coast of Peru to 15 S, 85 W, August 17-19, 1967.
FIGURE 47-Ph-v7. Vertical distribution of phaeophytin (mg/m3) along a northeast-southwest section from the coast of Peru to 15 S, 85 W, August 17-19, 1967.
FIGURE 47-PP-v7. Vertical distribution of primary production (mgC/m3/day) along a northeast-southwest section from the coast of Peru to 1S S, 85 W, August 17-18, 1967.
FIGURE 47-Ch-v4. Vertical distribution of chlorophyll-a (mg/m3) along 82 W, August 6-12, 1967.
FIGURE 47-Ph-v4. Vertical distribution of phaeophytin (mg/m3) along 82 W, August 6-12, 1967.
FIGURE 47-PP-v4. Vertical distribution of primary production (mgC/m3/day) along 82 W, August 6-12, 1967.
FIGURE 47-Ch-v5. Vertical distribution of chlorophyll-a (mg/m3) along a southwest-northeast section from 1009' S, 8209' W to the coast of Peru, August 12-13, 1967.
FIGURE 47-Ph-v5. Vertical distribution of phaeophytin (mg/m3) along a southwest-northeast section from 1009' S, 8209' W to the coast of Peru, August 12-13, 1967.
FIGURE 47-PP-v5. Vertical distribution of primary production (mgC/m3/day) along a southwest-northeast section from 1009' S, 8209' W to the coast of Peru, August 12-13, 1967.
FIGURE 47-Ch-v8. Vertical distribution of chlorophyll-a (mg/m3) along 85 W,, August 19-28, 1967.
FIGURE 47-Ph-v8. Vertical distribution of phaeophytin (mg/m3) along 85 W, August 19-28, 1967.
FIGURE 47-PP-v8. Vertical distribution of primary production (mgC/m3/day) along 85 W, August 19-27, 1967.
FIGURE 47-Ch-v10. Vertical distribution of chlorophyll-a (mg/m3) along 88 W, August 31-September 10, 1967.
FIGURE 47-Ph-v10. Vertical distribution of phaeophytin (mg/m3) along 88 W, August 31-September 10, 1967.
FIGURE 47-PP-v10. Vertical distribution of primary production (mgC/m3/day) along 88 W, August 31-September 10, 1967.
FIGURE 47-Ch-v12. Vertical distribution of chlorophyll-a (mg/m3) along 95 W, September 12-23, 1967.
FIGURE 47-Ph-v12. Vertical distribution of phaeophytin (mg/m3) along 95 W, September 12-23, 1967.
FIGURE 47-PP-v12. Vertical distribution of primary production (mgC/m3/day) along 95 W, September 12-22, 1967.