Matches in SemOpenAlex for { <https://semopenalex.org/work/W809764710> ?p ?o ?g. }
- W809764710 endingPage "68" @default.
- W809764710 startingPage "50" @default.
- W809764710 abstract "A two-dimensional (2-D) ecosystem model, set within the De Soto Canyon ecotone of the Northern Gulf of Mexico (NGOM) and driven by 3-D flow fields from decoupled water and air circulation models, explores the daily food web and sedimentary consequences, as well as potential public health implications, of oil-, nutrient-, and overfishing-induced transitions of dominant particle transports to the sea floor: from changing vectors of copepod fecal pellets to those of marine snow over the annual period of 2010–2011. Recent spilled petrochemicals are found to minimally impact already decimated zooplankton populations on the West Florida shelf (WFS). They facilitate instead formation of marine snow macroaggregates. These recent oil effects just exacerbate other results of prior overfishing in the absence of major eutrophication along the eastern side of this ecotone. East of the De Soto Canyon ecotone, overly optimistic removals of piscivore fish stocks over the last half-century had already caused a trophic cascade, with ~95% of WFS marine pelagic herbivore losses occurring by 2010, before the Deepwater Horizon [DWH] blowout. By contrast, west of De Soto Canyon, zooplankton on the eutrophic Louisiana shelf were less impacted by overfishing, retaining order of magnitude more stocks of the same genera of copepods. Yet, during descent of modeled marine snow to the ~1200-m isobath of the upper slope, ~98% of the particulate import to the benthos is now mainly clay minerals of Mississippi River origin along the ecotone. The lithogenic particles are scavenged by aggregates from the whole water column, not only biotic plankton from just the near-surface euphotic zone. The model results here replicate concurrent time series of: 1) annual sediment accumulations, measured at the sea floor; 2) bimonthly onshore nutrient supplies, due to upwelling, forced remotely by the Loop Current; and 3) near-surface weekly phytoplankton changes, seen by satellite. Because of such minimal grazing stresses, after the most recent DWH oil reductions to ~50% of the remaining few WFS copepods, their decreased herbivory amounts to only an 8% fecal pellet contribution to the model's particle fluxes, with 92% settling as marine snow to the sea bottom of the continental slope in 2010–2011 By contrast, 12% of the biotic particle exports, entrained within marine snow, result from increased loadings of Mississippi River nutrients via opened flood gates, while 50% of the ungrazed sinking phytoplankton are fueled by decadal anomalies of increased nutrient supplies from greater upwelling by the Loop Current. Finally, of the exiting phytodetritus embedded within marine snow from the 2010–2011 water columns, 38% are due to uptake of autocthonous nutrients in the slope waters. But, explicit upward fluxes of nutrient-poor, petrochemical dissolved organic carbon [DOC] substrates for use by aphotic chemolithoautotrophic bacterial bioremediators, responding to DWH oil releases and external dissolved nutrients, are now ignored in the present model. These model results also relate downstream, wind-borne trajectories of evaded potential marine aerosolized toxins to both human asthma episodes and total mercury amounts in coastal soils, without explicit sea-air exchanges of initial aerosols. Thus, future simulation analyses, with instead extant numerical descriptions of breaking wave exports of oil, harmful algal bloom [HAB], and Hg aerosol poisons, must fully couple onshore 3-D aerial imports of this suite of marine toxins to direct causal factors of adjacent human health impacts, constrained by known surrogate asthma hospitalization rates. They must next deconvolve net multiyear oil and top-down NGOM indirect losses of herbivores, within now unbalanced marine food webs of an overfishing-induced trophic cascade, from other concurrent anthropogenic forcings, due to in situ mercury, pesticide, and radionuclide poisonings, within linked habitats of both water and air, subject to continued climate and biotic changes of the southeastern U.S. seaboard." @default.
- W809764710 created "2016-06-24" @default.
- W809764710 creator A5008247878 @default.
- W809764710 creator A5015912354 @default.
- W809764710 creator A5019389307 @default.
- W809764710 creator A5020634639 @default.
- W809764710 creator A5031036380 @default.
- W809764710 creator A5039329031 @default.
- W809764710 creator A5043419872 @default.
- W809764710 creator A5053253345 @default.
- W809764710 creator A5071585078 @default.
- W809764710 creator A5073300594 @default.
- W809764710 creator A5081135377 @default.
- W809764710 creator A5087801712 @default.
- W809764710 creator A5088161478 @default.
- W809764710 creator A5089549570 @default.
- W809764710 date "2015-09-01" @default.
- W809764710 modified "2023-10-18" @default.
- W809764710 title "A simulation analysis of the plankton fate of the Deepwater Horizon oil spills" @default.
- W809764710 cites W1616087035 @default.
- W809764710 cites W1632351542 @default.
- W809764710 cites W1834253753 @default.
- W809764710 cites W1927876871 @default.
- W809764710 cites W1956997607 @default.
- W809764710 cites W1964019047 @default.
- W809764710 cites W1964267925 @default.
- W809764710 cites W1965574191 @default.
- W809764710 cites W1966616068 @default.
- W809764710 cites W1967684905 @default.
- W809764710 cites W1967919829 @default.
- W809764710 cites W1969730943 @default.
- W809764710 cites W1975578724 @default.
- W809764710 cites W1975708969 @default.
- W809764710 cites W1981516723 @default.
- W809764710 cites W1981894471 @default.
- W809764710 cites W1982360877 @default.
- W809764710 cites W1982461292 @default.
- W809764710 cites W1983026648 @default.
- W809764710 cites W1984297138 @default.
- W809764710 cites W1985818831 @default.
- W809764710 cites W1986870864 @default.
- W809764710 cites W1987140621 @default.
- W809764710 cites W1992084601 @default.
- W809764710 cites W1992176321 @default.
- W809764710 cites W1992529983 @default.
- W809764710 cites W1992730316 @default.
- W809764710 cites W1998952769 @default.
- W809764710 cites W1999308740 @default.
- W809764710 cites W2001534337 @default.
- W809764710 cites W2002904611 @default.
- W809764710 cites W2005413824 @default.
- W809764710 cites W2007442025 @default.
- W809764710 cites W2009121268 @default.
- W809764710 cites W2009215979 @default.
- W809764710 cites W2010024451 @default.
- W809764710 cites W2011300792 @default.
- W809764710 cites W2012414518 @default.
- W809764710 cites W2012433113 @default.
- W809764710 cites W2013373826 @default.
- W809764710 cites W2014461331 @default.
- W809764710 cites W2014944048 @default.
- W809764710 cites W2018229783 @default.
- W809764710 cites W2018550290 @default.
- W809764710 cites W2020920853 @default.
- W809764710 cites W2021915339 @default.
- W809764710 cites W2022404632 @default.
- W809764710 cites W2024184528 @default.
- W809764710 cites W2028466204 @default.
- W809764710 cites W2029124692 @default.
- W809764710 cites W2033666876 @default.
- W809764710 cites W2036918450 @default.
- W809764710 cites W2040693026 @default.
- W809764710 cites W2041717517 @default.
- W809764710 cites W2044267921 @default.
- W809764710 cites W2048603963 @default.
- W809764710 cites W2056224879 @default.
- W809764710 cites W2063447224 @default.
- W809764710 cites W2065545467 @default.
- W809764710 cites W2073933680 @default.
- W809764710 cites W2075455779 @default.
- W809764710 cites W2076040518 @default.
- W809764710 cites W2080850827 @default.
- W809764710 cites W2081537277 @default.
- W809764710 cites W2082697116 @default.
- W809764710 cites W2084570938 @default.
- W809764710 cites W2091885631 @default.
- W809764710 cites W2093456612 @default.
- W809764710 cites W2094038765 @default.
- W809764710 cites W2094359325 @default.
- W809764710 cites W2096175771 @default.
- W809764710 cites W2100420917 @default.
- W809764710 cites W2100737974 @default.
- W809764710 cites W2101289502 @default.
- W809764710 cites W2103012137 @default.
- W809764710 cites W2105687736 @default.
- W809764710 cites W2109863226 @default.
- W809764710 cites W2112259612 @default.
- W809764710 cites W2114897027 @default.