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Ichthyoplankton composition and plankton volumes from inland coastal waters of southeastern Alaska, April-November 1972



Details

  • Personal Author:
  • Corporate Authors:
    United States. National Marine Fisheries Service.
  • NOAA Program & Office:
    NMFS (National Marine Fisheries Service)
  • Description:
    Eighteen families of flsh were represented in 119 plankton samples taken on monthly cruises from April to November 1972 in southeastern Alaska. Fifteen kinds of larval fish were identified to species. Abundance of larval fish, fish eggs, and total plankton biomass peaked in May and declined through the summer. Walleye pollock (family Gadidae) were the most abundant larvae in May and June and were more concentrated in large channels than in small bays. Osmeridae and Bathylagidae were the second and third most abundantly represented families; peak abundance for both was in June and July. Other families with distinct peaks in abundance were Agonidae and Ammodytidae in May; Cottidae, Cyclopteridae, Stichaeidae, and Pleurnnectidae in June; and Scorpaenidae in July. Small numbers of Bathymasteridae were present from May through July. Myctophidae, Zoarcidae, and Hexagrammidae did not show distinct changes in seasonal abundance. Clupeidae, Gasterosteidae, Pholidae, and Ptilichthyidae were too rare in the catches to exhibit seasonal abundance. Calanoid copepods and phytoplankton made up most of the plankton retained by 0.333-mm mesh nets.
  • Keywords:
  • Series:
    NOAA Technical Report NMFS SSRF   723
  • Format:
    PDF
  • Publisher:
    NOAA National Marine Fisheries Service
  • Document Type:
    Technical Report
  • Place as Subject:
    Alaska
  • License:
  • Rights Information:
    CC0 Public Domain
  • Compliance:
    Library
  • Main Document Checksum:
    urn:sha-512:efb482d5e32b80b905579e8f364eea98479025fea0a104eaf1cefd661015d824be34a6cabef4d6cfddb3080ba3b6f587239096eadc8f809b800871770aeacba9
  • Download URL:
  • File Type:
    Filetype[PDF - 821.82 KB ]
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