Hilary Neckles, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 39
A monitoring protocol to assess tidal restoration of salt marshes on local and regional scales A monitoring protocol to assess tidal restoration of salt marshes on local and regional scales
Assessing the response of salt marshes to tidal restoration relies on comparisons of ecosystem attributes between restored and reference marshes. Although this approach provides an objective basis for judging project success, inferences can be constrained if the high variability of natural marshes masks differences in sampled attributes between restored and reference sites. Furthermore...
Authors
H.A. Neckles, M.D. Dionne, D.M. Burdick, C. T. Roman, R. Buchsbaum, E. Hutchins
Determining the trophic guilds of fishes and macroinvertebrates in a seagrass food web Determining the trophic guilds of fishes and macroinvertebrates in a seagrass food web
We established trophic guilds of macroinvertebrate and fish taxa using correspondence analysis and a hierarchical clustering strategy for a seagrass food web in winter in the northeastern Gulf of Mexico. To create the diet matrix, we characterized the trophic linkages of macroinvertebrate and fish taxa. present in Hatodule wrightii seagrass habitat areas within the St. Marks National...
Authors
J.J. Luczkovich, G.P. Ward, James C. Johnson, R.R. Christian, D. Baird, H. Neckles, W.M. Rizzo
The effects of global climate change on seagrasses The effects of global climate change on seagrasses
The increasing rate of global climate change seen in this century, and predicted to accelerate into the next, will significantly impact the Earth's oceans. In this review, we examine previously published seagrass research through a lens of global climate change in order to consider the potential effects on the world's seagrasses. A primary effect of increased global temperature on...
Authors
Frederick T. Short, Hilary A. Neckles
Impacts of elevated inorganic carbon concentrations of the autotrophic components of coastal submersed macrophyte communities Impacts of elevated inorganic carbon concentrations of the autotrophic components of coastal submersed macrophyte communities
No abstract available.
Authors
William M. Rizzo, Hilary A. Neckles, Ronald G. Boustany, David R. Meaux, Martha R. Griffis
Hydrologic control of litter decomposition in seasonally flooded prairie marshes Hydrologic control of litter decomposition in seasonally flooded prairie marshes
The effect of seasonal inundation on the decomposition of emergent macrophyte litter (Scolochloa festucacea) was examined under experimental flooding regimes in a northern prairie marsh. Stem and leaf litter was subjected to six aboveground inundation treatments (ranging from never flooded to flooded April through October) and two belowground treatments (nonflooded and flooded April to...
Authors
Hilary A. Neckles, Christopher Neill
Global climate change: Implications for submerged aquatic vegetation Global climate change: Implications for submerged aquatic vegetation
No abstract available.
Authors
William M. Rizzo, Hilary A. Neckles
Non-USGS Publications**
Moore, K. A., H. A. Neckles, and R. J. Orth.1996. Zostera marina (eelgrass) growth and survival along a gradient of nutrients and turbidity in the lower Chesapeake Bay. Marine Ecology Progress Series 142:247-259. DOI: 10.3354/meps142247
Neckles, H. A. (ed). 1994. Indicator development: seagrass monitoring and research in the Gulf of Mexico. EPA/620/R-94/029. 64pp.
Neckles, H. A., E. T. Koepfler, L. W. Haas, R. L. Wetzel, and R. J. Orth. 1994. Dynamics of epiphytic photoautotrophs and heterotrophs in Zostera marina L. (eelgrass) microcosms: responses to nutrient enrichment and grazing. Estuaries 17:597-605. DOI: 10.2307/1352407
Neckles, H. A., H. R. Murkin, and J. A. Cooper. 1990. Influences of seasonal flooding on macroinvertebrate abundance in wetland habitats. Freshwater Biology 23:311-322. DOI: 10.1111/j.1365-2427.1990.tb00274.x
Neckles, H. A. and R. L. Wetzel. 1989. Effects of forage harvest in seasonally flooded prairie marshes: simulation model experiments. pp. 975-990 in R. R. Sharitz and J. W. Gibbons (eds). Freshwater Wetlands and Wildlife. DOE Symposium Series No. 61, USDOE Office of Scientific and Technical Information, Oak Ridge, TN.
Wetzel, R. L. and H. A. Neckles. 1986. A model of Zostera marina L. photosynthesis and growth: simulated effects of selected physical-chemical variables and biological interactions. Aquatic Botany 26:307-323. DOI: 10.1007/BF00317683
**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: 39
A monitoring protocol to assess tidal restoration of salt marshes on local and regional scales A monitoring protocol to assess tidal restoration of salt marshes on local and regional scales
Assessing the response of salt marshes to tidal restoration relies on comparisons of ecosystem attributes between restored and reference marshes. Although this approach provides an objective basis for judging project success, inferences can be constrained if the high variability of natural marshes masks differences in sampled attributes between restored and reference sites. Furthermore...
Authors
H.A. Neckles, M.D. Dionne, D.M. Burdick, C. T. Roman, R. Buchsbaum, E. Hutchins
Determining the trophic guilds of fishes and macroinvertebrates in a seagrass food web Determining the trophic guilds of fishes and macroinvertebrates in a seagrass food web
We established trophic guilds of macroinvertebrate and fish taxa using correspondence analysis and a hierarchical clustering strategy for a seagrass food web in winter in the northeastern Gulf of Mexico. To create the diet matrix, we characterized the trophic linkages of macroinvertebrate and fish taxa. present in Hatodule wrightii seagrass habitat areas within the St. Marks National...
Authors
J.J. Luczkovich, G.P. Ward, James C. Johnson, R.R. Christian, D. Baird, H. Neckles, W.M. Rizzo
The effects of global climate change on seagrasses The effects of global climate change on seagrasses
The increasing rate of global climate change seen in this century, and predicted to accelerate into the next, will significantly impact the Earth's oceans. In this review, we examine previously published seagrass research through a lens of global climate change in order to consider the potential effects on the world's seagrasses. A primary effect of increased global temperature on...
Authors
Frederick T. Short, Hilary A. Neckles
Impacts of elevated inorganic carbon concentrations of the autotrophic components of coastal submersed macrophyte communities Impacts of elevated inorganic carbon concentrations of the autotrophic components of coastal submersed macrophyte communities
No abstract available.
Authors
William M. Rizzo, Hilary A. Neckles, Ronald G. Boustany, David R. Meaux, Martha R. Griffis
Hydrologic control of litter decomposition in seasonally flooded prairie marshes Hydrologic control of litter decomposition in seasonally flooded prairie marshes
The effect of seasonal inundation on the decomposition of emergent macrophyte litter (Scolochloa festucacea) was examined under experimental flooding regimes in a northern prairie marsh. Stem and leaf litter was subjected to six aboveground inundation treatments (ranging from never flooded to flooded April through October) and two belowground treatments (nonflooded and flooded April to...
Authors
Hilary A. Neckles, Christopher Neill
Global climate change: Implications for submerged aquatic vegetation Global climate change: Implications for submerged aquatic vegetation
No abstract available.
Authors
William M. Rizzo, Hilary A. Neckles
Non-USGS Publications**
Moore, K. A., H. A. Neckles, and R. J. Orth.1996. Zostera marina (eelgrass) growth and survival along a gradient of nutrients and turbidity in the lower Chesapeake Bay. Marine Ecology Progress Series 142:247-259. DOI: 10.3354/meps142247
Neckles, H. A. (ed). 1994. Indicator development: seagrass monitoring and research in the Gulf of Mexico. EPA/620/R-94/029. 64pp.
Neckles, H. A., E. T. Koepfler, L. W. Haas, R. L. Wetzel, and R. J. Orth. 1994. Dynamics of epiphytic photoautotrophs and heterotrophs in Zostera marina L. (eelgrass) microcosms: responses to nutrient enrichment and grazing. Estuaries 17:597-605. DOI: 10.2307/1352407
Neckles, H. A., H. R. Murkin, and J. A. Cooper. 1990. Influences of seasonal flooding on macroinvertebrate abundance in wetland habitats. Freshwater Biology 23:311-322. DOI: 10.1111/j.1365-2427.1990.tb00274.x
Neckles, H. A. and R. L. Wetzel. 1989. Effects of forage harvest in seasonally flooded prairie marshes: simulation model experiments. pp. 975-990 in R. R. Sharitz and J. W. Gibbons (eds). Freshwater Wetlands and Wildlife. DOE Symposium Series No. 61, USDOE Office of Scientific and Technical Information, Oak Ridge, TN.
Wetzel, R. L. and H. A. Neckles. 1986. A model of Zostera marina L. photosynthesis and growth: simulated effects of selected physical-chemical variables and biological interactions. Aquatic Botany 26:307-323. DOI: 10.1007/BF00317683
**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.