Howard Jelks (Former Employee)
Science and Products
Filter Total Items: 31
Abiotic and biotic controls of cryptobenthic fish assemblages across a Caribbean seascape
The majority of fish studies on coral reefs consider only non-cryptic species and, despite their functional importance, data on cryptic species are scarce. This study investigates inter-habitat variation in Caribbean cryptobenthic fishes by re-analysing a comprehensive data set from 58 rotenone stations around Buck Island, U.S. Virgin Islands. Boosted regression trees were used to associate the de
Authors
A.R. Harborne, H.L. Jelks, W. F. Smith-Vaniz, L.A. Rocha
Population genetic structure and conservation genetics of threatened Okaloosa darters (Etheostoma okaloosae)
Imperiled Okaloosa darters (Etheostoma okaloosae) are small, benthic fish limited to six streams that flow into three bayous of Choctawhatchee Bay in northwest Florida, USA. We analyzed the complete mitochondrial cytochrome b gene and 10 nuclear microsatellite loci for 255 and 273 Okaloosa darters, respectively. Bayesian clustering analyses and AMOVA reflect congruent population genetic structure
Authors
James D. Austin, Howard L. Jelks, Bill Tate, Aria R. Johnson, Frank Jordan
Weapons testing and endangered fish coexist in Florida
Okaloosa darters (Etheostoma okaloosae) are small fish found only in a few streams in the Florida panhandle. This species has been listed since 1973 as endangered due to habitat alteration resulting from erosion, the potential competition from brown darters (E. edwini), and a limited geographic distribution. In recent years, however, Okaloosa darters have benefited from improved resource managemen
Authors
Howard Jelks, Bill Tate, Frank Jordan
The black carp in North America: an update
No abstract available.
Authors
Leo G. Nico, Howard L. Jelks
Fish as major carbonate mud producers and missing components of the tropical carbonate factory
Carbonate mud is a major constituent of recent marine carbonate sediments and of ancient limestones, which contain unique records of changes in ocean chemistry and climate shifts in the geological past. However, the origin of carbonate mud is controversial and often problematic to resolve. Here we show that tropical marine fish produce and excrete various forms of precipitated (nonskeletal) calciu
Authors
C.T. Perry, M.A. Salter, A.R. Harborne, S.F. Crowley, Howard L. Jelks, R.W. Wilson
The decline of North American freshwater fishes
North America has a broad array of freshwater ecosystems because of the continent's complex geography and geological history. Within a multitude of habitats—that include streams, large rivers, natural lakes, springs, and wetlands—rich assemblages of fishes reside, representing diverse taxonomic groups with unique ecological requirements. They face an unprecedented conservation crisis.1 In the last
Authors
Stephen J. Walsh, Howard L. Jelks, Noel M. Burkhead
Modeling unobserved sources of heterogeneity in animal abundance using a Dirichlet process prior
In surveys of natural populations of animals, a sampling protocol is often spatially replicated to collect a representative sample of the population. In these surveys, differences in abundance of animals among sample locations may induce spatial heterogeneity in the counts associated with a particular sampling protocol. For some species, the sources of heterogeneity in abundance may be unknown or
Authors
R.M. Dorazio, B. Mukherjee, L. Zhang, M. Ghosh, H.L. Jelks, F. Jordan
Comparison of visual survey and seining methods for estimating abundance of an endangered, benthic stream fish
We compared visual survey and seining methods for estimating abundance of endangered Okaloosa darters, Etheostoma okaloosae, in 12 replicate stream reaches during August 2001. For each 20-m stream reach, two divers systematically located and marked the position of darters and then a second crew of three to five people came through with a small-mesh seine and exhaustively sampled the same area. Vis
Authors
F. Jordan, H.L. Jelks, S.A. Bortone, R.M. Dorazio
Effects of fin clipping on survival and position-holding behavior of brown darters, Etheostoma edwini
Advent of the polymerase chain reaction (PCR) has allowed conservation biologists to use small portions of tissue to obtain genetic material for population genetic and taxonomic study. Fin clips are used extensively in large-sized fishes, but it is unclear how clipping enough fin tissue for genetic analysis will affect survival of smaller fishes such as minnows and darters, which are among the mos
Authors
C.E. Champagne, J.D. Austin, H.L. Jelks, F. Jordan
Conservation status of imperiled north American freshwater and diadromous fishes
This is the third compilation of imperiled (i.e., endangered, threatened, vulnerable) plus extinct freshwater and diadromous fishes of North America prepared by the American Fisheries Society's Endangered Species Committee. Since the last revision in 1989, imperilment of inland fishes has increased substantially. This list includes 700 extant taxa representing 133 genera and 36 families, a 92% inc
Authors
H.L. Jelks, S. J. Walsh, N.M. Burkhead, Salvador Contreras-Balderas, E. Diaz-Pardo, D.A. Hendrickson, J. Lyons, N.E. Mandrak, F. McCormick, Joseph S. Nelson, Steven P. Platania, B.A. Porter, C.B. Renaud, J. J. Schmitter-Soto, E.B. Taylor, M.L. Warren
Molecular systematics of Serrasalmidae: Deciphering the identities of piranha species and unraveling their evolutionary histories
Piranhas and their relatives have proven to be a challenging group from a systematic perspective, with difficulties in identification of species, linking of juveniles to adults, diagnosis of genera, and recognition of higher-level clades. In this study we add new molecular data consisting of three mitochondrial regions for museum vouchered and photo-documented representatives of the Serrasalmidae.
Authors
B. Freeman, L.G. Nico, M. Osentoski, H.L. Jelks, T.M. Collins
Non-USGS Publications**
Nico, L.G., H.L. Jelks, and T. Tuten. 2009. Non-Native suckermouth armored catfishes in Florida: Description of nest burrows and burrow colonies with assessment of shoreline conditions. Aquatic Nuisance Species Research Bulletin 9: 1-30.
Australian trevallies of the genus Pseudocaranx (Teleostei: Carangidae), with description of a new species from Western Australia
Nico, L.G. and H.L. Jelks. 2006. Non-Native Armored Catfishes in Florida: Description of Nest Burrows and Burrow Colonies with Preliminary Assessment of Shoreline Conditions. Report to U.S. Army Engineer Research and Development Center, Waterways Experiment Station, Vicksburg, MS. 29 pp.
Baber, M. J., K.J. Babbitt, F. Jordan, H.L. Jelks, and W.M. Kitchens. 2005. Relationships among habitat type, hydrology, predator composition, and distribution of larval anurans in the Florida Everglades. pages 154-160 in W.E, Meshaka, Jr. and K.J. Babbitt (eds) Amphibians and Reptiles: status and conservation in Florida. Krieger Publishing Company, Malabar, Florida.
Nico, L.G., J.D. Williams, and H.L. Jelks. 2005. Black carp: Biological synopsis and risk assessment of an introduced fish. American Fisheries Society, Special Publication 32, Bethesda, Maryland. 337 pp.
U.S. Fish and Wildlife Service. 1998. Okaloosa darter (Etheostoma okaloosae) Recovery Plan (Revised). Atlanta, Georgia. 42 p. Jelks, H.L., and S. Alam authors.
Jordan, F., H.L. Jelks, and W.M. Kitchens. 1997. Habitat structure and plant community composition in a northern Everglades wetland landscape. Wetlands 17:275-283
Burkhead, N.M., H.L. Jelks, F. Jordan, D.C. Weaver, and J.D. Williams. 1994. The comparative ecology of Okaloosa and brown darters in Boggy and Rocky Bayou stream systems, Choctawhatchee Bay, Florida. Final Report to Eglin Air Force Base. 90 p.
Jordan, F., H.L. Jelks, and W.M. Kitchens. 1994. Habitat use by the fishing spider, Dolomedes triton in a northern everglades wetland. Wetlands 14:239-242
Jelks, H.L., F. Jordan, and W.M. Kitchens. 1992. Response of wading birds and aquatic macrofauna to hydrological conditions and vegetative structure of Loxahatchee National Wildlife Refuge. U.S. Fish and Wildlife Service Work Order 32 Final Report. 133 p.
Maffei, M.D., and H.L. Jelks. 1991. The first successful nesting of wood storks on Arthur R. Marshall Loxahatchee National Wildlife Refuge. Florida Field Naturalist 19(1):12-14
Collopy, M.W., and H.L. Jelks. 1987. Distribution of foraging wading birds in relation to the physical and biological characteristics of freshwater wetlands in southwest Florida. Report to Nongame Wildlife Program of the Florida Game and Fresh Water Fish Commission. 104 p.
Tuten, T, J.D. Austin, M.A. Barrett, J.S. Hargrove, H.L. Jelks, K.G. Johnson, and E.J. Nagid. 2013. Florida’s Southern Tessellated Darter: a rare case of a common fish. American Fisheries Society Genetics Section Newsletter 26(4): 2-5.
Walker, S., A. Dausman, and D. Lavoie, eds., 2012. Gulf of Mexico Ecosystem Science Assessment and Needs—A Product of the Gulf Coast Ecosystem Restoration Task Force Science Coordination Team (H.L. Jelks, member). 72 p.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 31
Abiotic and biotic controls of cryptobenthic fish assemblages across a Caribbean seascape
The majority of fish studies on coral reefs consider only non-cryptic species and, despite their functional importance, data on cryptic species are scarce. This study investigates inter-habitat variation in Caribbean cryptobenthic fishes by re-analysing a comprehensive data set from 58 rotenone stations around Buck Island, U.S. Virgin Islands. Boosted regression trees were used to associate the de
Authors
A.R. Harborne, H.L. Jelks, W. F. Smith-Vaniz, L.A. Rocha
Population genetic structure and conservation genetics of threatened Okaloosa darters (Etheostoma okaloosae)
Imperiled Okaloosa darters (Etheostoma okaloosae) are small, benthic fish limited to six streams that flow into three bayous of Choctawhatchee Bay in northwest Florida, USA. We analyzed the complete mitochondrial cytochrome b gene and 10 nuclear microsatellite loci for 255 and 273 Okaloosa darters, respectively. Bayesian clustering analyses and AMOVA reflect congruent population genetic structure
Authors
James D. Austin, Howard L. Jelks, Bill Tate, Aria R. Johnson, Frank Jordan
Weapons testing and endangered fish coexist in Florida
Okaloosa darters (Etheostoma okaloosae) are small fish found only in a few streams in the Florida panhandle. This species has been listed since 1973 as endangered due to habitat alteration resulting from erosion, the potential competition from brown darters (E. edwini), and a limited geographic distribution. In recent years, however, Okaloosa darters have benefited from improved resource managemen
Authors
Howard Jelks, Bill Tate, Frank Jordan
The black carp in North America: an update
No abstract available.
Authors
Leo G. Nico, Howard L. Jelks
Fish as major carbonate mud producers and missing components of the tropical carbonate factory
Carbonate mud is a major constituent of recent marine carbonate sediments and of ancient limestones, which contain unique records of changes in ocean chemistry and climate shifts in the geological past. However, the origin of carbonate mud is controversial and often problematic to resolve. Here we show that tropical marine fish produce and excrete various forms of precipitated (nonskeletal) calciu
Authors
C.T. Perry, M.A. Salter, A.R. Harborne, S.F. Crowley, Howard L. Jelks, R.W. Wilson
The decline of North American freshwater fishes
North America has a broad array of freshwater ecosystems because of the continent's complex geography and geological history. Within a multitude of habitats—that include streams, large rivers, natural lakes, springs, and wetlands—rich assemblages of fishes reside, representing diverse taxonomic groups with unique ecological requirements. They face an unprecedented conservation crisis.1 In the last
Authors
Stephen J. Walsh, Howard L. Jelks, Noel M. Burkhead
Modeling unobserved sources of heterogeneity in animal abundance using a Dirichlet process prior
In surveys of natural populations of animals, a sampling protocol is often spatially replicated to collect a representative sample of the population. In these surveys, differences in abundance of animals among sample locations may induce spatial heterogeneity in the counts associated with a particular sampling protocol. For some species, the sources of heterogeneity in abundance may be unknown or
Authors
R.M. Dorazio, B. Mukherjee, L. Zhang, M. Ghosh, H.L. Jelks, F. Jordan
Comparison of visual survey and seining methods for estimating abundance of an endangered, benthic stream fish
We compared visual survey and seining methods for estimating abundance of endangered Okaloosa darters, Etheostoma okaloosae, in 12 replicate stream reaches during August 2001. For each 20-m stream reach, two divers systematically located and marked the position of darters and then a second crew of three to five people came through with a small-mesh seine and exhaustively sampled the same area. Vis
Authors
F. Jordan, H.L. Jelks, S.A. Bortone, R.M. Dorazio
Effects of fin clipping on survival and position-holding behavior of brown darters, Etheostoma edwini
Advent of the polymerase chain reaction (PCR) has allowed conservation biologists to use small portions of tissue to obtain genetic material for population genetic and taxonomic study. Fin clips are used extensively in large-sized fishes, but it is unclear how clipping enough fin tissue for genetic analysis will affect survival of smaller fishes such as minnows and darters, which are among the mos
Authors
C.E. Champagne, J.D. Austin, H.L. Jelks, F. Jordan
Conservation status of imperiled north American freshwater and diadromous fishes
This is the third compilation of imperiled (i.e., endangered, threatened, vulnerable) plus extinct freshwater and diadromous fishes of North America prepared by the American Fisheries Society's Endangered Species Committee. Since the last revision in 1989, imperilment of inland fishes has increased substantially. This list includes 700 extant taxa representing 133 genera and 36 families, a 92% inc
Authors
H.L. Jelks, S. J. Walsh, N.M. Burkhead, Salvador Contreras-Balderas, E. Diaz-Pardo, D.A. Hendrickson, J. Lyons, N.E. Mandrak, F. McCormick, Joseph S. Nelson, Steven P. Platania, B.A. Porter, C.B. Renaud, J. J. Schmitter-Soto, E.B. Taylor, M.L. Warren
Molecular systematics of Serrasalmidae: Deciphering the identities of piranha species and unraveling their evolutionary histories
Piranhas and their relatives have proven to be a challenging group from a systematic perspective, with difficulties in identification of species, linking of juveniles to adults, diagnosis of genera, and recognition of higher-level clades. In this study we add new molecular data consisting of three mitochondrial regions for museum vouchered and photo-documented representatives of the Serrasalmidae.
Authors
B. Freeman, L.G. Nico, M. Osentoski, H.L. Jelks, T.M. Collins
Non-USGS Publications**
Nico, L.G., H.L. Jelks, and T. Tuten. 2009. Non-Native suckermouth armored catfishes in Florida: Description of nest burrows and burrow colonies with assessment of shoreline conditions. Aquatic Nuisance Species Research Bulletin 9: 1-30.
Australian trevallies of the genus Pseudocaranx (Teleostei: Carangidae), with description of a new species from Western Australia
Nico, L.G. and H.L. Jelks. 2006. Non-Native Armored Catfishes in Florida: Description of Nest Burrows and Burrow Colonies with Preliminary Assessment of Shoreline Conditions. Report to U.S. Army Engineer Research and Development Center, Waterways Experiment Station, Vicksburg, MS. 29 pp.
Baber, M. J., K.J. Babbitt, F. Jordan, H.L. Jelks, and W.M. Kitchens. 2005. Relationships among habitat type, hydrology, predator composition, and distribution of larval anurans in the Florida Everglades. pages 154-160 in W.E, Meshaka, Jr. and K.J. Babbitt (eds) Amphibians and Reptiles: status and conservation in Florida. Krieger Publishing Company, Malabar, Florida.
Nico, L.G., J.D. Williams, and H.L. Jelks. 2005. Black carp: Biological synopsis and risk assessment of an introduced fish. American Fisheries Society, Special Publication 32, Bethesda, Maryland. 337 pp.
U.S. Fish and Wildlife Service. 1998. Okaloosa darter (Etheostoma okaloosae) Recovery Plan (Revised). Atlanta, Georgia. 42 p. Jelks, H.L., and S. Alam authors.
Jordan, F., H.L. Jelks, and W.M. Kitchens. 1997. Habitat structure and plant community composition in a northern Everglades wetland landscape. Wetlands 17:275-283
Burkhead, N.M., H.L. Jelks, F. Jordan, D.C. Weaver, and J.D. Williams. 1994. The comparative ecology of Okaloosa and brown darters in Boggy and Rocky Bayou stream systems, Choctawhatchee Bay, Florida. Final Report to Eglin Air Force Base. 90 p.
Jordan, F., H.L. Jelks, and W.M. Kitchens. 1994. Habitat use by the fishing spider, Dolomedes triton in a northern everglades wetland. Wetlands 14:239-242
Jelks, H.L., F. Jordan, and W.M. Kitchens. 1992. Response of wading birds and aquatic macrofauna to hydrological conditions and vegetative structure of Loxahatchee National Wildlife Refuge. U.S. Fish and Wildlife Service Work Order 32 Final Report. 133 p.
Maffei, M.D., and H.L. Jelks. 1991. The first successful nesting of wood storks on Arthur R. Marshall Loxahatchee National Wildlife Refuge. Florida Field Naturalist 19(1):12-14
Collopy, M.W., and H.L. Jelks. 1987. Distribution of foraging wading birds in relation to the physical and biological characteristics of freshwater wetlands in southwest Florida. Report to Nongame Wildlife Program of the Florida Game and Fresh Water Fish Commission. 104 p.
Tuten, T, J.D. Austin, M.A. Barrett, J.S. Hargrove, H.L. Jelks, K.G. Johnson, and E.J. Nagid. 2013. Florida’s Southern Tessellated Darter: a rare case of a common fish. American Fisheries Society Genetics Section Newsletter 26(4): 2-5.
Walker, S., A. Dausman, and D. Lavoie, eds., 2012. Gulf of Mexico Ecosystem Science Assessment and Needs—A Product of the Gulf Coast Ecosystem Restoration Task Force Science Coordination Team (H.L. Jelks, member). 72 p.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.