Implications of early life stages in the natural history of the Gulf of Mexico sturgeon, Acipenser oxyrinchus de sotoi

Chapman, Frank A.; Carr, Stephen Howard

doi:10.1007/bf00001178

Cited by 42 publications

(59 citation statements)

References 8 publications

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“…Spring spawning migrations by sturgeon in the Suwannee River were first reported by Huff (1975) and more recently by Chapman and Carr (1995). Our observations and collection ofYOYin the field confirm that Gulf of Mexico sturgeon spawn during the spring.…”

Section: Materials and Methods-we Attempted To Locatesupporting

confidence: 82%

“…Suwannee River natural spring areas are known to consist primarily of deep trenches and outcroppings of hard limestone (Rosenau et al, 1977). In addition, Chapman and Carr (1995) indicated that cool water temperatures (15-22 C) are necessary for optimal spawning and larval survival of Gulf of Mexico sturgeon. Water temperatures of the Suwannee River springs are stable at around 18-21 C (Rosenau et al, 1977), and adult sturgeon are often found in proximity to these springs (Chapman and Carr, 1995).…”

Section: Materials and Methods-we Attempted To Locatementioning

confidence: 99%

“…Most important, our observations also suggest that YOY sturgeon remain in the river after they hatch. Chapman and Carr (1995) suggested that natural springs of cool water (18-21 C) flowing into the Suwannee River provide an essential habitat for adult Gulf of Mexico sturgeon in summer months. Our observations indicate that these spring areas also provide suitable habitat for the YOY sturgeon.…”

Section: Materials and Methods-we Attempted To Locatementioning

confidence: 99%

“…Movement and surfacing behavior patterns of loggerhead sea turtles in and near Canaveral Channel, Florida (September and October 1981 (Huff, 1975;Chapman and Carr, 1995). The adult sturgeon remain in the river until the fall, when they migrate into the Gulf of Mexico (Huff, 1975;.…”

mentioning

confidence: 99%

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First Observations of Young-of-Year Gulf of Mexico Sturgeon (Acipenser oxyrinchus de sotoi) in the Suwannee River, Florida

Carr

Chapman

1996

goms

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Section: Materials and Methods-we Attempted To Locatesupporting

confidence: 82%

Section: Materials and Methods-we Attempted To Locatementioning

confidence: 99%

Section: Materials and Methods-we Attempted To Locatementioning

confidence: 99%

mentioning

confidence: 99%

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First Observations of Young-of-Year Gulf of Mexico Sturgeon (Acipenser oxyrinchus de sotoi) in the Suwannee River, Florida

Carr

Chapman

1996

goms

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“…Age at sexual maturity ranges from 8 to 17 years for females and 7 to 21 years for males (Huff 1975). Chapman and Carr (1995) estimated that mature female Gulf sturgeon weighing between 64 and 112 lb (29-51 kg) produce an average of 400,000 eggs. Spawning intervals range from 1 to 5 years for males, while females require longer intervals ranging from 3 to 5 years (Fox et al 2000;Huff 1975).…”

Section: Life Historymentioning

confidence: 99%

Kemp's Ridley Sea Turtle Saga and Setback: Novel Analyses of Cumulative Hatchlings Released and Time-Lagged Annual Nests in Tamaulipas, Mexico

Caillouet¹,

Gallaway

Putman

2016

Chelonian Conservation and Biology

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Design of a naturalized flow regime—an example from the Lower Missouri River, USA

Jacobson

Galat

2008

Ecohydrology

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A group of river managers, stakeholders, and scientists met during summer 2005 to design a more naturalized flow regime for the Lower Missouri River (LMOR). The objective was to comply with requirements under the U.S. Endangered Species Act to support reproduction and survival of threatened and endangered species, with emphasis on the endangered pallid sturgeon (Scaphirhynchus albus), while minimizing negative effects to existing social and economic benefits of prevailing river management. Specific hydrograph requirements for pallid sturgeon reproduction are unknown, hence much of the design process was based on features of the natural flow regime. Environmental flow components (EFCs) extracted from the reference natural flow regime were used to design and assess performance of alternative flow regimes.The design process incorporated a primary stage in which conceptual hydrographs were developed and assessed for their general ecological and social-economic performance. The second stage accounted for hydroclimatic variation by coding the conceptual hydrographs into reservoir release rules, adding constraints for downstream flooding and low-storage precludes, and running the rules through 100 years of hydroclimatic simulation. The output flow regimes were then evaluated for presumed ecological benefits based on how closely they resembled EFCs in the reference natural flow regime. Flow regimes also were assessed for social-economic cost indicators, including days of flooding of low-lying agricultural land, days over flood stage, and storage levels in system reservoirs.Our experience with flow-regime design on the LMOR underscored the lack of confidence the stakeholders place in the value of the natural flow regime as a measure of ecosystem benefit in the absence of fundamental scientific documentation. Stakeholders desired proof of ecological benefits commensurate with the certainty of economic losses. We also gained insight into the processes of integrating science into a collaborative management exercise. Although the 2005 collaborative effort failed to reach a consensus among stakeholders on a naturalized flow regime, the process was successful in pilot-testing a design approach; it helped focus scienctific efforts on key knowledge gaps; and it demonstrated the potential for collaborations among scientists, stakeholders, and managers in river management decision making.

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Implications of early life stages in the natural history of the Gulf of Mexico sturgeon, Acipenser oxyrinchus de sotoi

Cited by 42 publications

References 8 publications

First Observations of Young-of-Year Gulf of Mexico Sturgeon (Acipenser oxyrinchus de sotoi) in the Suwannee River, Florida

First Observations of Young-of-Year Gulf of Mexico Sturgeon (Acipenser oxyrinchus de sotoi) in the Suwannee River, Florida

Kemp's Ridley Sea Turtle Saga and Setback: Novel Analyses of Cumulative Hatchlings Released and Time-Lagged Annual Nests in Tamaulipas, Mexico

Design of a naturalized flow regime—an example from the Lower Missouri River, USA

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