. Bulletin. Science. Species Richness Species Richness 70^ iHâ 60 fk 50 in f* 40 !-â â 30 20 i> â 10 â â > j i y 2 3 4 Station. Fig. 12. Number of species (species richness) and Shannon-Weiner Diversity (H') of fishes in San Diego Bay by station and sampling month, July 1994-April 1999. resident (Shortfin corvina, Cynoscion parvipinnis and bat rays, Myliobatis cali- fornicus) and summer seasonal (yellowfin croaker, Umbrina roncadof) species. Species Group XLâThis group included four species of resident, benthic, flat- fish species which occurred throughout the bay primarily in the channe
. Bulletin. Science. Species Richness Species Richness 70^ iHâ 60 fk 50 in f* 40 !-â â 30 20 i> â 10 â â > j i y 2 3 4 Station. Fig. 12. Number of species (species richness) and Shannon-Weiner Diversity (H') of fishes in San Diego Bay by station and sampling month, July 1994-April 1999. resident (Shortfin corvina, Cynoscion parvipinnis and bat rays, Myliobatis cali- fornicus) and summer seasonal (yellowfin croaker, Umbrina roncadof) species. Species Group XLâThis group included four species of resident, benthic, flat- fish species which occurred throughout the bay primarily in the channels. Included in this group were the larger juveniles and adults of California halibut (Paralich- thys californicus) and diamond turbot (Hypsopsetta guttulata) which were dis- tributed in all depth strata. The remaining two species (spotted turbot (Pleuronich- thys ritteri) and California tonguefish {Symphurus atricauda)) mainly occupied the channels of the north bay. Relationship of PC factors to Fish Distribution and Abundance Canonical correlation was utilized to estimate the relationship of the four prom- inent PC factors of station (as a surrogate for distance from the mouth of the bay), depth, temperature, and salinity to the individual station abundances (log10(x + 1)) of the 35 most abundant species. These four PC factors accounted for nearly 88% (R2 = ) of the variance in individual species abundance among stations over sampling month (Table 10). This extremely high R2 value served to under- score the great influence which relatively few environmental factors can have on the distribution and abundance of fishes over time. As a result of this highly significant relationship, the eleven species groups determined through cluster analysis discriminated very well among the first three, significant discriminate roots (Figure 15).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectscience
