1979 Ecological study of fishes and the water quality characteristics of Florida Bay, Everglades National Park, Florida
Fish collections under varying ecological conditions were made by trawling and seining, monthly and quarterly in depths of <1 m to depths of 3 m of the Florida Bay portion of Everglades National Park, Florida. From May 1973 through September 1976, a total of 182,530 fishes representing 128 species and 50 families were taken at 27 stations. An additional 21 species were identified from sportfish-creel surveys and supplemental observations. Most of the species collected were juveniles of species that occur as adults in the Florida Bay creel census survey, or were small species that were seasonal residents.Marked temporal and spatial abundance of the catches was observed. The greatest numbers and biomass of the fishes occurred in the wet season (summer/fall), whereas lowest numbers and biomass appeared during the dry season (winter/spring) The greatest abundance and diversityof fishes was found in western Florida Bay followed by eastern and central Bay regions respectively.Overall, five species comprised 75% of the numerical total while eleven species made up 75% of the total biomass. Collections were dominated numerically by anchovies (Engraulidae), especially Anchoa mitchilli, in western Florida Bay. Mojarras (Gerridae), mostly silver jennyEucinostomus gula, and porgies (Sparidae), especially pinfish Lagodon rhomboides, dominated numerically in central and eastern portions of the Bay, respectively.Except for salinity, other measured physico-chemical parameters (water temperature, pH, dissolved oxygen, and turbidity) showed no variation beyond ranges considered normal for shallow, tropical marine environments. Salinity varied from 0 to 66 ppt near the mainland. Nearshore hypersaline conditions (>45 ppt) persisted for nearly 2 years during the 1974 - 1975 severe drought period. Significant reductions in fish abundance/diversity were observed in relation to hypersaline conditions.Bay-wide macrobenthic communities were mapped (presence/absence) and were primarily comprised of turtle grass (Thalassia), shoalgrass [(Diplanthera = (Halodule)], and/or green algae Penicillus. Seasonal dieoff of seagrasses was observed in north-central Florida Bay. (PDF contains 107 pages)
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NOAA/National Ocean Service/National Centers for Coastal Ocean Science
2002
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Subjects: | Ecology, Management, Fisheries, |
Online Access: | http://hdl.handle.net/1834/19983 |
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dig-aquadocs-1834-199832021-07-12T02:34:27Z 1979 Ecological study of fishes and the water quality characteristics of Florida Bay, Everglades National Park, Florida Schmidt, Thomas W. Ecology Management Fisheries Fish collections under varying ecological conditions were made by trawling and seining, monthly and quarterly in depths of <1 m to depths of 3 m of the Florida Bay portion of Everglades National Park, Florida. From May 1973 through September 1976, a total of 182,530 fishes representing 128 species and 50 families were taken at 27 stations. An additional 21 species were identified from sportfish-creel surveys and supplemental observations. Most of the species collected were juveniles of species that occur as adults in the Florida Bay creel census survey, or were small species that were seasonal residents.Marked temporal and spatial abundance of the catches was observed. The greatest numbers and biomass of the fishes occurred in the wet season (summer/fall), whereas lowest numbers and biomass appeared during the dry season (winter/spring) The greatest abundance and diversityof fishes was found in western Florida Bay followed by eastern and central Bay regions respectively.Overall, five species comprised 75% of the numerical total while eleven species made up 75% of the total biomass. Collections were dominated numerically by anchovies (Engraulidae), especially Anchoa mitchilli, in western Florida Bay. Mojarras (Gerridae), mostly silver jennyEucinostomus gula, and porgies (Sparidae), especially pinfish Lagodon rhomboides, dominated numerically in central and eastern portions of the Bay, respectively.Except for salinity, other measured physico-chemical parameters (water temperature, pH, dissolved oxygen, and turbidity) showed no variation beyond ranges considered normal for shallow, tropical marine environments. Salinity varied from 0 to 66 ppt near the mainland. Nearshore hypersaline conditions (>45 ppt) persisted for nearly 2 years during the 1974 - 1975 severe drought period. Significant reductions in fish abundance/diversity were observed in relation to hypersaline conditions.Bay-wide macrobenthic communities were mapped (presence/absence) and were primarily comprised of turtle grass (Thalassia), shoalgrass [(Diplanthera = (Halodule)], and/or green algae Penicillus. Seasonal dieoff of seagrasses was observed in north-central Florida Bay. (PDF contains 107 pages) Center for Coastal Monitoring and Assessment; NPS Special Report 01-02 2021-06-24T15:16:51Z 2021-06-24T15:16:51Z 2002 monograph http://hdl.handle.net/1834/19983 en NOAA Technical Memorandum NOS NCCOS CCMA http://www.aoml.noaa.gov/general/lib/cedar79.pdf application/pdf application/pdf NOAA/National Ocean Service/National Centers for Coastal Ocean Science Silver Spring, MD http://aquaticcommons.org/id/eprint/2165 403 2011-09-29 19:36:06 2165 United States National Ocean Service |
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Ecology Management Fisheries Ecology Management Fisheries Schmidt, Thomas W. 1979 Ecological study of fishes and the water quality characteristics of Florida Bay, Everglades National Park, Florida |
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Fish collections under varying ecological conditions were made by trawling and seining, monthly and quarterly in depths of <1 m to depths of 3 m of the Florida Bay portion of Everglades National Park, Florida. From May 1973 through September 1976, a total of 182,530 fishes representing 128 species and 50 families were taken at 27 stations. An additional 21 species were identified from sportfish-creel surveys and supplemental observations. Most of the species collected were juveniles of species that occur as adults in the Florida Bay creel census survey, or were small species that were seasonal residents.Marked temporal and spatial abundance of the catches was observed. The greatest numbers and biomass of the fishes occurred in the wet season (summer/fall), whereas lowest numbers and biomass appeared during the dry season (winter/spring) The greatest abundance and diversityof fishes was found in western Florida Bay followed by eastern and central Bay regions respectively.Overall, five species comprised 75% of the numerical total while eleven species made up 75% of the total biomass. Collections were dominated numerically by anchovies (Engraulidae), especially Anchoa mitchilli, in western Florida Bay. Mojarras (Gerridae), mostly silver jennyEucinostomus gula, and porgies (Sparidae), especially pinfish Lagodon rhomboides, dominated numerically in central and eastern portions of the Bay, respectively.Except for salinity, other measured physico-chemical parameters (water temperature, pH, dissolved oxygen, and turbidity) showed no variation beyond ranges considered normal for shallow, tropical marine environments. Salinity varied from 0 to 66 ppt near the mainland. Nearshore hypersaline conditions (>45 ppt) persisted for nearly 2 years during the 1974 - 1975 severe drought period. Significant reductions in fish abundance/diversity were observed in relation to hypersaline conditions.Bay-wide macrobenthic communities were mapped (presence/absence) and were primarily comprised of turtle grass (Thalassia), shoalgrass [(Diplanthera = (Halodule)], and/or green algae Penicillus. Seasonal dieoff of seagrasses was observed in north-central Florida Bay. (PDF contains 107 pages) |
format |
monograph |
topic_facet |
Ecology Management Fisheries |
author |
Schmidt, Thomas W. |
author_facet |
Schmidt, Thomas W. |
author_sort |
Schmidt, Thomas W. |
title |
1979 Ecological study of fishes and the water quality characteristics of Florida Bay, Everglades National Park, Florida |
title_short |
1979 Ecological study of fishes and the water quality characteristics of Florida Bay, Everglades National Park, Florida |
title_full |
1979 Ecological study of fishes and the water quality characteristics of Florida Bay, Everglades National Park, Florida |
title_fullStr |
1979 Ecological study of fishes and the water quality characteristics of Florida Bay, Everglades National Park, Florida |
title_full_unstemmed |
1979 Ecological study of fishes and the water quality characteristics of Florida Bay, Everglades National Park, Florida |
title_sort |
1979 ecological study of fishes and the water quality characteristics of florida bay, everglades national park, florida |
publisher |
NOAA/National Ocean Service/National Centers for Coastal Ocean Science |
publishDate |
2002 |
url |
http://hdl.handle.net/1834/19983 |
work_keys_str_mv |
AT schmidtthomasw 1979ecologicalstudyoffishesandthewaterqualitycharacteristicsoffloridabayevergladesnationalparkflorida |
_version_ |
1756077303284105216 |