Detailed Lingcod Nest Census Protocol

EUWP Lingcod Nest Census Data

At each nest site, data is collected on the guard fish, on the physical characteristics of each egg mass, and on the location of each egg mass.

When an egg mass is first observed, the following data are collected about the nest:

  1. The number and location of the nest site identification tag (ID tag) placed on the site.
  2. Detailed description of the locations of the nest site and the egg mass that allows the site and egg mass to be located on subsequent surveys and on maps of the park. Where possible this description references trail and feature names.
  3. Information about the guard fish: presence, length in cm, color ( light, dark, brownish, mottled or a combinations of mottled and a color), behavior (passive- no aggressive action, aggressive - a single aggressive threat, very aggressive - repeated aggressive threats), and any identifying characteristics such as scars.
  4. Information on the egg mass: size of the rectangular box that would contain the mass (length, width, and depth in cm), color (pearl, pink, white, dull white, beige, gray), orientation of the long dimension of the egg mass (F-fragmented or loose; H-horizontal; K-kabob (clusters of eggs strung along a linear feature such as a rope); or V-vertical), and the geometric characteristics (shape) of the egg mass (sandwich, wedge, kebob), presence of broken egg shells, presence of diatom/fungal growth, indications of predation on the eggs.
  5. Information on the egg mass location: height off of the sea floor in cm and the type of material the eggs are deposited on.
  6. Comments and egg mass location and anything that is interesting or unusual about the egg mass, including the pressence of predators on the eggs.

On subsequent observations of an egg mass, information is collected on whether or not the egg mass is present and whether or not the guard fish is present. In addition, the subsequent observations may include information on any of the parameters observed in the initial observation as well as comments on the conditions of the egg mass and the fish.

Information is collected about the dive including: date of the survey, the names of the surveyors, areas surveyed, features surveyed, number of lingcod sighted, water conditions, weather conditions, general comments regarding the dive and unusual lingcod behavior.



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