A Comparison of the Fish Populations and Habitat in Open and Closed Salt Marsh Impoundments in East-Central Florida

Gilmore, R. Grant; Cooke, Douglas; Donohoe, Christopher J.

doi:10.18785/negs.0502.02

Cited by 65 publications

(47 citation statements)

References 2 publications

(13 reference statements)

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“…This is evident in the species compositions and densities of nekton in closed and open impoundments examined in Florida wetlands (e.g. Gilmore et al 1982, Rey et al 1990, Vose & Bell 1994. These studies have shown that closed impoundments, while dominated by small resident nekton, rarely contain estuarine transient species, but when these impoundments are open, usage by transient species increases while densities of residents may decline.…”

Section: Physical Access To Intertidal Resourcesmentioning

confidence: 94%

Bioenergetic and landscape considerations for scaling expectations of nekton production from intertidal marshes

Kneib¹

2003

Mar. Ecol. Prog. Ser.

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Section: Physical Access To Intertidal Resourcesmentioning

confidence: 94%

Bioenergetic and landscape considerations for scaling expectations of nekton production from intertidal marshes

Kneib¹

2003

Mar. Ecol. Prog. Ser.

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“…Weinstein 1979, Bozeman & Dean 1980, Gilmore et al 1982, Boesch & Turner 1984, Rogers et al 1984, Rozas & Hackney 1984, Lipcius & Subrahmanyam 1986). In the last decade emergent vegetation structure has been recognized to be of direct use to juvenile and small adult fishes (Kneib & Stiven 1978).…”

Section: Introductionmentioning

confidence: 99%

Nekton use of regularly-flooded salt-marsh cordgrass habitat in North Carolina, USA

Hettler¹

1989

Mar. Ecol. Prog. Ser.

168

111

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Species composition, numbers and biornass of the nekton comn~unity on a regularlyflooded Spartina marsh near Beaufort, North Carolina, USA, was estimated for 1 yr using modified 10 m block nets. Thirty-five fish species dominated by mummichog Fundulus heteroclitus, spot Leiostomus xanthurus and pinfish Lagodon rhornboides were captured from the marsh surface. Numbers were greatest in April (1300 per 10 m of marsh edge); biomass was greatest in September (900 g per 10 m). Stream Order 1 (rivulet) marsh was occupied by fewer species, but contained greater numbers and biomass than Stream Order 3 (channel) marsh.

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“…Another 20% (n ϭ 957) were collected in a salt-marsh impoundment of the Indian River Lagoon, Florida, during the period extending from 1980 to 1987 (i.e., impoundment No. 12, as described in Harrington and Harrington [1961], Gilmore et al [1982], and Rey et al [1991]). These fish were collected with pull nets and culvert traps on spring tides.…”

Section: Methodsmentioning

confidence: 99%

“…In the Indian River Lagoon, the strongly bimodal pattern of myomeres and vertebrae and corresponding lack of intermediates does not suggest interbreeding between E. saurus and Elops sp. To some extent the Indian River Lagoon is a unique estuary, with very high species diversity and a recognized flow of larvae via tropical currents from the Caribbean Sea (Gilmore 1995). Nonetheless, a strongly bimodal meristic pattern for Elops is also evident in the eastern and northern Gulf of Mexico (Thompson and Deegan 1982).…”

Section: Geographic Areamentioning

confidence: 99%

Mechanisms maintaining sympatric distributions of two ladyfish (Elopidae: é) morphs in the Gulf of Mexico and western North Atlantic Ocean

McBride

Horodysky

2004

Limnology & Oceanography

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Two morphs of ladyfish exist in the western North Atlantic and adjacent waters: Elops saurus, a high-count morph (79-87 myomeres or vertebrae) in the north, and Elops sp., a low-count morph (73-78 myomeres or vertebrae) in the south. It has been proposed that these morphs are two allopatric species, but significant questions about their ecology remain. We examined 4,597 specimens and found that E. saurus was distributed principally in the western North Atlantic and Gulf of Mexico, whereas Elops sp. was distributed principally in the Caribbean Sea. Mixing of both morphs occurred along the east coast of the United States and the gulf coast of Mexico. Our results are consistent with the hypothesis that these meristic differences arise from latitudinal differences in temperature between spawning areas (i.e., Jordan's rule). Dispersal via the Gulf Stream System and associated mesoscale features appear sufficient to explain all areas of sympatric distribution. Elops larvae were found nearly year-round in Florida estuaries, but E. saurus larvae were dominant in winter and spring collections, and Elops sp. larvae were dominant in summer and autumn. Thus, juvenile Elops sp. experience a shorter growing season and a different suite of estuarine conditions than juvenile E. saurus. The low initial abundance and high mortality of Elops sp. reduce the potential for interbreeding with E. saurus where they are sympatric. Such ecological data uphold the postulation that the two morphs are different species and support the existence of macroscale biotic connectivity between the Caribbean region and North America.Many marine larvae are capable of dispersing widely throughout the global oceans, affecting the zoogeographic patterns and population dynamics of marine species. Large 1 Corresponding author (richard.mcbride@fwc.state.fl.us).

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A Comparison of the Fish Populations and Habitat in Open and Closed Salt Marsh Impoundments in East-Central Florida

Cited by 65 publications

References 2 publications

Bioenergetic and landscape considerations for scaling expectations of nekton production from intertidal marshes

Bioenergetic and landscape considerations for scaling expectations of nekton production from intertidal marshes

Nekton use of regularly-flooded salt-marsh cordgrass habitat in North Carolina, USA

Mechanisms maintaining sympatric distributions of two ladyfish (Elopidae: é) morphs in the Gulf of Mexico and western North Atlantic Ocean

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