and decreased water quality. Local extinction is due to changes in Tolerance to anthropogenic water quality (dissolved oxygen, Tolerance alterations: low, moderate1, high temperature) associated with changing discharge. Colonization streamlined fishes that are cruiser: generally found swimming in the The effect of discharge on Locomotion water column, colonization is related to fish morphology2 fishes that are generally in swimming ability as indexed by hugger: contact with the stream bottom, morphology. other1 The effect of discharge on Adult body size (total length): colonization is related to fish Body size mm, small ≤100 swimming ability as indexed by > 100mm and < 200 mm, medium1 body size. >200 mm large Colonization is primarily due to Spawning Number of months devoted to spawning migration so the effect of duration spawning in a given year discharge on colonization is related to spawning duration. Reproduction species that complex spawning: build and guard nests, Complex spawners devote greater species that broadcast spawning: Spawning physiological resources to spawning broadcast eggs into the water behavior activities (e.g., nest building) and are column or over substrate during more vulnerable to variable flows spawning, other1 Species with protracted spawning durations have greater spawning Spawning Number of months devoted to opportunities and are less influenced duration spawning in a given year by discharge during the spawning period (spring). streamlined fishes that are cruiser: generally found swimming in the Young-of-year fishes are vulnerable Locomotion water column, to changing discharge conditions morphology2 fishes that are generally in during juvenile rearing period hugger: contact with the stream bottom, (summer). other1. 1Category used as baseline in binary coding. 2Terminology is from Goldstein and Meador (2004) and hugger is combined hugger and creeper morphology of Goldstein and Meador (2004).
and decreased water quality. Tolerance Tolerance to anthropogenic alterations: low, moderate1, high Local extinction is due to changes in water quality (dissolved oxygen, temperature) associated with changing discharge. Colonization Locomotion morphology2 cruiser: streamlined fishes that are generally found swimming in the water column, hugger: fishes that are generally in contact with the stream bottom, other1 The effect of discharge on colonization is related to fish swimming ability as indexed by morphology. Body size Adult body size (total length): small ≤100 mm, medium1 > 100mm and < 200 mm, large >200 mm The effect of discharge on colonization is related to fish swimming ability as indexed by body size. Spawning duration Number of months devoted to spawning in a given year Colonization is primarily due to spawning migration so the effect of discharge on colonization is related to spawning duration. Reproduction Spawning behavior complex spawning: species that build and guard nests, Complex spawners devote greater physiological resources to spawning activities (e.g., nest building) and are more vulnerable to variable flows broadcast spawning: species that broadcast eggs into the water column or over substrate during spawning, other1 Spawning duration Number of months devoted to spawning in a given year Species with protracted spawning durations have greater spawning opportunities and are less influenced by discharge during the spawning period (spring). Locomotion morphology2 cruiser: streamlined fishes that are generally found swimming in the water column, hugger: fishes that are generally in contact with the stream bottom, other1. Young-of-year fishes are vulnerable to changing discharge conditions during juvenile rearing period (summer). 1Category used as baseline in binary coding. 2Terminology is from Goldstein and Meador (2004) and hugger is combined hugger and creeper morphology of Goldstein and Meador (2004).
Peterson%20and%20Shea%20final%20draft-1.docx