Utilization of submerged aquatic vegetation habitats by fishes and decapods in the Galvestion Bay Ecosystem, Texas /
"essential fishery habitat", as defined by the Magnuson-
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| Format: | Thesis eBook |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
1998.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | "essential fishery habitat", as defined by the Magnuson- (SAV) cover appeared to be the most important variable and 8,163 individuals were collected from 204M2 throw trap and white shrimp, Penaeus setiferus, 12%. Dominants in non- between Halodule and Ruppia each season, but there were Callinectes sapidus, 16%; and gulf menhaden, Brevoortia conserved to maintain fishery productivity. contained 89% of the total fauna by number (83% decapods; 17% containing 11% (55% decapods; 45% fishes). The dominant decapod densities were quantitatively sampled during fall, determine the relative value of each habitat in terms of differences in faunal densities indicated that SAV habitat environmental and other biological variables for each habitat faunal utilization and species richness. Physical, Fish and decapod densities in shoalgrass, Halodule wrightii, fishes), with nonvegetated substrate (sand and mud) habitats) taken during the period 30 September 1993 to 28 level, particularly by some commercial and recreational November 1994. Vegetated habitat (Halodule and Ruppia) or mud habitats in Galveston Bay, Texas were compared to Palaemonetes pugio, 40%; blue crab, Callinectes sapidus, 15%; patronus, 14%. The amount of submerged aquatic vegetation Penaeus setiferus. Total faunal densities were similar related to total fish and decapod densities. Significant samples (equally divided between vegetated and non-vegetated seasonal variations in use of each habitat at the species species in vegetated habitats were daggerblade grass shrimp, species. Halodule and Ruppia appear to function as spring and summer using a lm2 throw trap. Totals of 48 taxa Stevens Fishery Conservation Act of 1996, and should be substrate. Non-vegetated substrate adjacent to SAV, however, vegetated habitats included Penaeus setiferus, 21 %; was more valuable to fishes and decapods than non-vegetated was utilized by some species including commercially important were examined in relation to faunal density. Fish and wigeongrass, Ruppia maritima, and adjacent non-vegetated sand |
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| Item Description: | "Major subject: Rangeland Ecology and Management". Vita. |
| Physical Description: | v, 85 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 32-42. |