Volume 10. Biological and nutrient chemistry data
from principal participating ships,
third survey cruise, February-March 1968

 
Love, C. M. (Ed.) (1975). Biological and nutrient chemistry data from principal participating ships, third survey cruise, February-March 1968. EASTROPAC Atlas, vol. 10. Washington, D. C.: National Marine Fisheries Service.

Front cover
Inside front cover
Title page, cont.

INTRODUCTION. By Cuthbert M. Love

List of Figures iv, v, vi

Literature Cited
, cont.

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 70-TC-a. Locations of stations occupied by participating ships in the main portion of the EASTROPAC area during the third survey period, February-March 1968.
FIGURE 70-TC-b. Locations of stations occupied by participating ships in the southern coastal portion of the EASTROPAC area during the third survey period, February-March 1968.

Nutrient chemistry

FIGURE 70-P-10. Phosphate-phosphorus (g-at/l) at 10 meters, February-March 1968.
FIGURE 70-Si-10. Silicate-silicon (g-at/l) at 10 meters, February-March 1968.
FIGURE 70-NO3-10. Nitrate-nitrogen (g-at/l) at 10 meters, February-March 1968.
FIGURE 70-NO2-10. Nitrite-nitrogen (g-at/l) at 10 meters, February-March 1968.
FIGURE 70-NH3-10. Ammonia-nitrogen (g-at/l) at 10 meters, February-March 1968.
FIGURE 70-P-100. Phosphate-phosphorus (g-at/l) at 100 meters, February-March 1968.
FIGURE 70-Si-100. Silicate-silicon (g-at/l) at 100 meters, February-March 1968.
FIGURE 70-NO3-100. Nitrate-nitrogen (g-at/l) at 100 meters, February-March 1968.
FIGURE 70-NH3-100. Ammonia-nitrogen (g-at/l) at 100 meters, February-March 1968.

Phytoplankton

FIGURE 70-Ch-S. Chlorophyll-a (mg/m3) at the sea surface, February-March 1968.
FIGURE 70-Ch-ei. Chlorophyll-a (mg/m2) integrated over the euphotic layer, February-March 1968.
FIGURE 70-Ch-150i. Chlorophyll-a (mg/m2) integrated from the sea surface to 150 meters depth, February-March 1968.
FIGURE 70-Ph-150i. Phaeophytin (mg/m2) integrated from the sea surface to 150 meters depth, February-March 1968.
FIGURE 70-PP-S. Primary production (mg C/m3/day) at the sea surface, February-March 1968.
FIGURE 70-PP-ei. Primary production (mgC/m2/day) integrated over the euphotic layer, February-March 1968.
FIGURE 70-EL. Thickness of the euphotic layer in meters, February-March 1968.

Sightings of birds and marine mammals

FIGURE 70-BP. Relative abundance of plankton-feeding birds (birds/mile), February-March 1968.
FIGURE 70-BF. Relative abundance of fish and cephalopod-feeding birds (birds/mile), February-March 1968.

Zooplankton and micronekton

FIGURE 70-FCp. Distribution of standing stock (ml/1000m3) of total fish and cephalopods taken in night micronekton hauls during February-March 1968.
FIGURE 70-Cr. Distribution of standing stock (ml/1000m3) of total crustaceans taken in night micronekton hauls during February-March 1968.
FIGURE 70-Nk. Distribution of standing stock (ml/l000m3) of total micronekton taken in night micronekton hauls during February-March 1968.
FIGURE 70-ZhN. Distribution of standing stock (ml/1000m3) of zooplankton taken in 50-cm net hauls at night, February-March 1968.
FIGURE 70-Z1N. Distribution of standing stock (ml/1000m3) of zooplankton taken in 1-m net hauls at night, February-March 1968.
FIGURE 70-ZhD. Distribution of standing stock (ml/1000m3) of zooplankton taken in 50-cm net hauls during the day, February-March 1968.
FIGURE 70-Z1D. Distribution of standing stock (ml/1000m3) of zooplankton taken in 1-m net hauls during the day, February-March 1968.

Fish larvae

FIGURE 70-FL. Total fish larvae (number/haul) taken in 1-m oblique plankton hauls, February-March 1968.
FIGURE 70-FE. Total fish eggs (number/haul) taken in 1-m oblique plankton hauls during February-March 1968.

Nutrient chemistry

FIGURE 75-P-v1. Vertical distribution of phosphate-phosphorus (g-at/l) along 119 W from 2146' N to 934' N, February 18-22, 1968.
FIGURE 75-P-v2. Vertical distribution of phosphate-phosphorus (g-at/l) along 119 W from 1505' N to 2001' S, February 20-March 4, 1968.
FIGURE 75-P-v4/76-P-v3. Vertical distribution of phosphate-phosphorus (g-at/l) along 112 W, March 1968.
FIGURE 75-P-v5. Vertical distribution of phosphate-phosphorus (g-at/l) along 98 W, March 21-April 8, 1968.

FIGURE 75-Si-v1. Vertical distribution of silicate-silicon (g-at/l) along 119 W from 2146' N to 934' N, February 18-22, 1968.
FIGURE 75-Si-v2. Vertical distribution of silicate-silicon (g-at/l) along 119 W from 1505' N to 2001' S, February 20-March 4, 1968.
FIGURE 75-Si-v4/76-Si-v3. Vertical distribution of silicate-silicon (g-at/l) along 112 W, March 1968.
FIGURE 75-Si-v5. Vertical distribution of silicate-silicon (g-at/l) along 98 W, March 21-April 8, 1968.

FIGURE 75-NO3-v1. Vertical distribution of nitrate-nitrogen (g-at/l) along 119 W from 2146' N to 934' N, February 18-22, 1968.
FIGURE 75-NO3-v2. Vertical distribution of nitrate-nitrogen (g-at/l) along 119 W from 1505' N to 2001' S, February 20-March 4, 1968.
FIGURE 75-NO3-v4/76-NO3-v3. Vertical distribution of nitrate-nitrogen (g-at/l) along 112 W, March 1968.
FIGURE 75-NO3-v5. Vertical distribution of nitrate-nitrogen (g-at/l) along 98 W, March 21-April 8, 1968.

FIGURE 75-NO2-v1. Vertical distribution of nitrite-nitrogen (g-at/l) along 119 W from 2146' N to 934' N, February 18-22, 1968.
FIGURE 75-NO2-v2. Vertical distribution of nitrite-nitrogen (g-at/l) along 119 W from 1505' N to 2001' S, February 20-March 4, 1968.
FIGURE 75-NO2-v4/76-NO2-v3. Vertical distribution of nitrite-nitrogen (g-at/l) along 112 W, March 1968.
FIGURE 75-NO2-v5. Vertical distribution of nitrite-nitrogen (g-at/l) along 98 W, March 21-April 8, 1968.

Phytoplankton

FIGURE 75-Ch-v1. Vertical distribution of chlorophyll-a (mg/m3) along 119 W from 2146' N to 934' N, February 18-22, 1968.
FIGURE 75-Ch-v2. Vertical distribution of chlorophyll-a (mg/m3) along 119 W from 1505' N to 2001' S, February 20-March 4, 1968.
FIGURE 75-Ch-v3. Vertical distribution of chlorophyll-a (mg/m3) along 20 S, March 4-7, 1968.
FIGURE 75-Ch-v4/76-Ch-v3. Vertical distribution of chlorophyll-a (mg/m3) along 112 W, March 1968.
FIGURE 75-Ch-v5. Vertical distribution of chlorophyll-a (mg/m3) along 98 W, March 21-April 8, 1968.

FIGURE 75-Ph-v1. Vertical distribution of phaeophytin (mg/m3) along 119 W from 2146' N to 934' N, February 18-22, 1968.
FIGURE 75-Ph-v2. Vertical distribution of phaeophytin (mg/m3) along 119 W from 1505' N to 2001' S, February 20-March 4, 1968.
FIGURE 75-Ph-v3. Vertical distribution of phaeophytin (mg/m3) along 20 S, March 4-7, 1968.
FIGURE 75-Ph-v4/76-Ph-v3. Vertical distribution of phaeophytin (mg/m3) along 112 W, March 1968.
FIGURE 75-Ph-v5. Vertical distribution of phaeophytin (mg/m3) along 98 W, March 21-April 8, 1968.

FIGURE 75-PP-v1. Vertical distribution of primary production (mgC/m3/day) along 119 W from 2146' N to 934' N, February 18-22, 1968.
FIGURE 75-PP-v2. Vertical distribution of primary production (mgC/m3/day) along 119 W from 1505' N to 2001' S, February 20-March 4, 1968.
FIGURE 75-PP-v3. Vertical distribution of primary production (mgC/m3/day) along 20 S, March 4-7, 1968.
FIGURE 75-PP-v4/76-PP-v3. Vertical distribution of primary production (mgC/m3/day) along 112 W, March 1968.
FIGURE 75-PP-v5. Vertical distribution of primary production (mgC/m3/day) along 98 W, March 21-April 8, 1968.

Nutrient chemistry

FIGURE 76-P-v1. Vertical distribution of phosphate-phosphorus (g-at/l) along a section from Acapulco to 12 N, 105 W, February 26-28, 1968.
FIGURE 76-P-v2. Vertical distribution of phosphate-phosphorus (g-at/l) along 105 W, February 28-March 14, 1968.
FIGURE 76-P-v4. Vertical distribution of phosphate-phosphorus (g-at/l) along a section from 12 N, 112 W to Manzanillo, March 26-30, 1968.

FIGURE 76-Si-v1. Vertical distribution of silicate-silicon (g-at/l) along a section from Acapulco to 12 N, 105 W, February 26-28, 1968.
FIGURE 76-Si-v2. Vertical distribution of silicate-silicon (g-at/l) along 105 W, February 28-March 14, 1968.
FIGURE 76-Si-v4. Vertical distribution of silicate-silicon (g-at/l) along a section from 12 N, 112 W to Manzanillo, March 26-30, 1968.

FIGURE 76-NO3-v1. Vertical distribution of nitrate-nitrogen (g-at/l) along a section from Acapulco to 12 N, 105 W, February 26-28, 1968.
FIGURE 76-NO3-v2. Vertical distribution of nitrate-nitrogen (g-at/l) along 105 W, February 28-March 14, 1968.
FIGURE 76-NO3-v4. Vertical distribution of nitrate-nitrogen (g-at/l) along a section from 12 N, 112 W to Manzanillo, March 26-30, 1968.

FIGURE 76-NO2-v1. Vertical distribution of nitrite-nitrogen (g-at/l) along a section from Acapulco to 12 N, 105 W, February 26-28, 1968.
FIGURE 76-NO2-v2. Vertical distribution of nitrite-nitrogen (g-at/l) along 105 W, February 28-March 14, 1968.
FIGURE 76-NO2-v4. Vertical distribution of nitrite-nitrogen (g-at/l) along a section from 12 N, 112 W to Manzanillo, March 26-30, 1968.

Phytoplankton
FIGURE 76-Ch-v1. Vertical distribution of chlorophyll-a (mg/m3) along a section from Acapulco to 12 N, 105 W, February 26-28, 1968.
FIGURE 76-Ph-v1. Vertical distribution of phaeophytin (mg/m3) along a section from Acapulco to 12 N, 105 W, February 26-28, 1968.
FIGURE 76-PP-v1. Vertical distribution of primary production (mgC/m3/day) along a section from Acapulco to 12 N, 105 W, February 26-28, 1968.
FIGURE 76-Ch-v2. Vertical distribution of chlorophyll-a (mg/m3) along 105 W, February 28-March 14, 1968.
FIGURE 76-Ph-v2. Vertical distribution of phaeophytin (mg/m3) along 105 W, February 28-March 14, 1968.
FIGURE 76-PP-v2. Vertical distribution of primary production (mgC/m3/day) along 105 W, February 28-March 14, 1968.
FIGURE 76-Ch-v4. Vertical distribution of chlorophyll-a (mg/m3) along a section from 12 N, 112 W to Manzanillo, March 26-30, 1968.
FIGURE 76-Ph-v4. Vertical distribution of phaeophytin (mg/m3) along a section from 12 N, 112 W to Manzanillo, March 26-30, 1968.
FIGURE 76-PP-v4. Vertical distribution of primary production (mgC/m3/day) along a section from 12 N, 112 W to Manzanillo, March 26-30, 1968.

Nutrient chemistry

FIGURE 77-P-v2. Vertical distribution of phosphate-phosphorus (g-at/l) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, January 31-February 1, 1968.
FIGURE 77-P-v4. 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, February 1-3, 1968.
FIGURE 77-P-v6. Vertical distribution of phosphate-phosphorus (g-at/l) along 82 W, February 4-9, 1968.
FIGURE 77-P-v7. Vertical distribution of phosphate-phosphorus (g-at/l) along a southwest-northeast section from 957' S, 8149' W to the coast of Peru, February 9, 1968.
FIGURE 77-P-v9. Vertical distribution of phosphate-phosphorus (g-at/l) along a northeast-southwest section from the coast of Peru to 1459' S, 8456' W, February 13-15, 1968.
FIGURE 77-P-v10. Vertical distribution of phosphate-phosphorus (g-at/l) along 85 W, February 15-25, 1968.
FIGURE 77-P-v11. Vertical distribution of phosphate-phosphorus (g-at/l) along 88 W, March 30-April 8, 1968.
FIGURE 77-P-v13. Vertical distribution of phosphate-phosphorus (g-at/l) along 95 W, March-April 1968.

FIGURE 77-Si-v2. Vertical distribution of silicate-silicon (g-at/l) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, January 31-February 1, 1968.
FIGURE 77-Si-v4. 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, February 1-3, 1968.
FIGURE 77-Si-v6. Vertical distribution of silicate-silicon (g-at/l) along 82 W, February 4-9, 1968.
FIGURE 77-Si-v7. Vertical distribution of silicate-silicon (g-at/l) along a southwest-northeast section from 957' S, 8149' W to the coast of Peru, February 9, 1968.
FIGURE 77-Si-v9. Vertical distribution of silicate-silicon (g-at/l) along a northeast-southwest section from the coast of Peru to 1459' S, 8456' W, February 13-15, 1968.
FIGURE 77-Si-v10. Vertical distribution of silicate-silicon (g-at/l) along 85 W, February 15-25, 1968.
FIGURE 77-Si-v11. Vertical distribution of silicate-silicon (g-at/l) along 88 W, March 30-April 8, 1968.
FIGURE 77-Si-v13. Vertical distribution of silicate-silicon (g-at/l) along 95 W, March-April 1968.

FIGURE 77-NO3-v2. Vertical distribution of nitrate-nitrogen (g-at/l) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, January 31-February 1, 1968.
FIGURE 77-NO3-v4. 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, February 1-3, 1968.
FIGURE 77-NO3-v6. Vertical distribution of nitrate-nitrogen (g-at/l) along 82 W, February 4-9, 1968.
FIGURE 77-NO3-v7. Vertical distribution of nitrate-nitrogen (g-at/l) along a southwest-northeast section from 957' S, 8149' W to the coast of Peru, February 9, 1968.
FIGURE 77-NO3-v9. Vertical distribution of nitrate-nitrogen (g-at/l) along a northeast-southwest section from the coast of Peru to 1459' S, 8456' W, February 13-15, 1968.
FIGURE 77-NO3-v10. Vertical distribution of nitrate-nitrogen (g-at/l) along 85 W, February 15-25, 1968.
FIGURE 77-NO3-v11. Vertical distribution of nitrate-nitrogen (g-at/l) along 88 W, March 30-April 8, 1968.
FIGURE 77-NO3-v13. Vertical distribution of nitrate-nitrogen (g-at/l) along 95 W, March-April 1968.

FIGURE 77-NO2-v2. Vertical distribution of nitrite-nitrogen (g-at/l) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, January 31-February 1, 1968.
FIGURE 77-NO2-v4. 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, February 1-3, 1968.
FIGURE 77-NO2-v6. Vertical distribution of nitrite-nitrogen (g-at/l) along 82 W, February 4-9, 1968.
FIGURE 77-NO2-v7. Vertical distribution of nitrite-nitrogen (g-at/l) along a southwest-northeast section from 957' S, 8149' W to the coast of Peru, February 9, 1968.
FIGURE 77-NO2-v9. Vertical distribution of nitrite-nitrogen (g-at/l) along a northeast-southwest section from the coast of Peru to 1459' S, 8456' W, February 13-15, 1968.
FIGURE 77-NO2-v10. Vertical distribution of nitrite-nitrogen (g-at/l) along 85 W, February 15-25, 1968.
FIGURE 77-NO2-v11. Vertical distribution of nitrite-nitrogen (g-at/l) along 88 W, March 30-April 8, 1968.
FIGURE 77-NO2-v13. Vertical distribution of nitrite-nitrogen (g-at/l) along 95 W, March-April 1968.

Phytoplankton

FIGURE 77-Ch-v2. Vertical distribution of chlorophyll-a (mg/m3) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, January 31-February 1, 1968.
FIGURE 77-Ph-v2. Vertical distribution of phaeophytin (mg/m3) across the northern portion of the Panama Bight from the coast of Colombia to Cabo Mala, January 31-February 1, 1968.
FIGURE 77-Ch-v4. 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, February 1-3, 1968.
FIGURE 77-Ph-v4. 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, February 1-3, 1968.
FIGURE 77-PP-v4. Vertical distribution of primary production (mgC/m3/day) along a northwest-southeast section in the central portion of the Panama Bight from Peninsula de Azuero, Panama, to the coast of Colombia, February 1-3, 1968.
FIGURE 77-Ch-v6. Vertical distribution of chlorophyll-a (mg/m3) along 82 W, February 4-9, 1968.
FIGURE 77-Ph-v6. Vertical distribution of phaeophytin (mg/m3) along 82 W, February 4-9, 1968.
FIGURE 77-PP-v6. Vertical distribution of primary production (mgC/m3/day) along 82 W, February 4-9, 1968.
FIGURE 77-Ch-v7. Vertical distribution of chlorophyll-a (mg/m3) along a southwest-northeast section from 957' S, 8149' W to the coast of Peru, February 9, 1968.
FIGURE 77-Ph-v7. Vertical distribution of phaeophytin (mg/m3) along a southwest-northeast section from 957' S, 8149' W to the coast of Peru, February 9, 1968.
FIGURE 77-PP-v7. Vertical distribution of primary production (mgC/m3/day) along a southwest-northeast section from 957' S, 8149' W to the coast of Peru, February 9, 1968.
FIGURE 77-Ch-v9. Vertical distribution of chlorophyll-a (mg/m3) along a northeast-southwest section from the coast of Peru to 1459' S, 8456' W, February 13-15, 1968.
FIGURE 77-Ph-v9. Vertical distribution of phaeophytin (mg/m3) along a northeast-southwest section from the coast of Peru to 1459' S, 8456' W, February 13-15, 1968.
FIGURE 77-PP-v9. Vertical distribution of primary production (mgC/m3/day) along a northeast-southwest section from the coast of Peru to 1459' S, 8456' W, February 13-15, 1968.
FIGURE 77-Ch-v10. Vertical distribution of chlorophyll-a (mg/m3) along 85 W, February 15-25, 1968.
FIGURE 77-Ph-v10. Vertical distribution of phaeophytin (mg/m3) along 85 W, February 15-25, 1968.
FIGURE 77-PP-v10. Vertical distribution of primary production (mgC/m3/day) along 85 W, February 15-25, 1968.
FIGURE 77-Ch-v11. Vertical distribution of chlorophyll-a (mg/m3) along 88 W, March 30-April 8, 1968.
FIGURE 77-Ph-v11. Vertical distribution of phaeophytin (mg/m3) along 88 W, March 30-April 8, 1968.
FIGURE 77-PP-v11. Vertical distribution of primary production (mgC/m3/day) along 88 W, March 30-April 8, 1968.
FIGURE 77-Ch-v13. Vertical distribution of chlorophyll-a (mg/m3) along 95 W, March-April 1968.
FIGURE 77-Ph-v13. Vertical distribution of phaeophytin (mg/m3) along 95 W, March-April 1968.
FIGURE 77-PP-v13. Vertical distribution of primary production (mgC/m3/day) along 95 W, March-April 1968.