Circulation in the Gulf of Mexico induced by tides, wind and the Yucatan Current

Martínez‐López, Benjamín; Sierra, Alejandro Parés

doi:10.7773/cm.v24i1.740

Cited by 24 publications

(16 citation statements)

References 14 publications

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“…CB and LA haplotypes may outcompete FL alleles, locally, simply by outnumbering them so that their frequency remains too low to be detected with the relatively small sample sizes of this study; the same may occur in FL if haplotypes from CB and LA are outnumbered by migrant haplotypes. Such pattern of haplotype disparities appears consistent with the activity of three important oceanographic forces: (1) the Louisiana Coastal Current (Wiseman et al, 2004;Jarosz and Murray, 2005), (2) the GoMx Loop (Sturges and Leben, 2000;Oey et al, 2005), and the Westward Yucatan Current (Martínez-López and Parés-Sierra, 1998;Ochoa et al, 2001).…”

Section: Population Structure Of Botryocladia Occidentalis In the Gulsupporting

confidence: 59%

Population Structure of the Red Macroalga Botryocladia occidentalis (Børgesen) Kylin (Rhodymeniaceae, Rhodymeniales) in the Gulf of Mexico Before the Deepwater Horizon Oil Spill

2019

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Studies on the population structure of common widespread macroalgae in the Gulf of Mexico (GoMx) are scarce, and this knowledge gap limits our understanding on how disturbances affect the genetic diversity of macroalgae in this basin. The latter is due to the lack of a baseline that can be compared with allele frequency surveys conducted after a major disturbance such as the 2010 Deepwater Horizon oil spill (DWH), which leaked 780,000 m 3 of crude oil in the vicinity of highly diverse macroalgal communities. Fortunately, quantitative assessments of the population structure pre-DWH can be accomplished for several macroalgae with dried specimens collected from research cruises conducted before 2010 in the offshore GoMx. Based on three markers (cytochrome c oxidase subunit I, COX II-III intergenic spacer, and the RuBisCO large subunit), this study reconstructed the allele frequencies pre-DWH for a GoMxwidespread macroalga, Botryocladia occidentalis, and revealed the existence of distinct populations in each of three distant regions of the GoMx: Florida Middle Grounds (FL), Campeche Banks (CB), and offshore Louisiana (LA). Population structure was assessed with exact tests of population differentiation and Analyses of Molecular Variance. FL harbored the most differentiated and genetically diverse population due to the presence and abundance of unique haplotypes. Interestingly, FL haplotypes were not closely phylogenetically related to each other and included the most divergent lineages of the entire GoMx; this phylogeographic pattern suggests a strong influence of migrants from the Caribbean on the FL population. Additionally, likelihood ratio tests with a small sample collected post-DWH indicated that the LA population underwent strong changes, showing statistically significant differences before (LA) vs. after (L2) the disaster. Whereas the LA population had affinity to CB, L2 showed a FL haplotype

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Section: Population Structure Of Botryocladia Occidentalis In the Gulsupporting

confidence: 59%

Population Structure of the Red Macroalga Botryocladia occidentalis (Børgesen) Kylin (Rhodymeniaceae, Rhodymeniales) in the Gulf of Mexico Before the Deepwater Horizon Oil Spill

2019

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“…Located on the southeast Gulf of Mexico (GoM), the Yucatan Peninsula continental shelf (hereafter Yucatan Shelf), is an important economic area rich in fishing resources, gas, and oil deposits. It is a wide shallow marine region where the ocean floor frictions the ocean currents and detriments the height of the waves, characterized by low speeds (mean -20 cm/s, (Martínez-López and Pares-Sierra, 1998), (Ruíz-Castillo et al, 2016)) and low significant wave heights (0.63 m on average), respectively. Wind stress forcing and bottom friction are the main drivers of the ocean currents over the shelf, but also the water column stratification has been found to be an important factor ((Ruíz-Castillo et al, 2016), (Reyes-Mendoza et al, 2016), (Jouanno et al, 2018)).…”

Section: Introductionmentioning

confidence: 99%

On the advection of upwelled water on the western Yucatan Shelf

Kurczyn¹,

Duran²,

Beier³

et al. 2021

Preprint

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Upwelling events (2) Shelf processes (3) In-situ observations (4) Climatological Lagrangian Coherent StructuresWe are submitting for publication in your prestigious journal, the manuscript entitled "On the advection of upwelled water on the western Yucatan Shelf."We wish to confirm that there are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome. We confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship that are not listed. We further confirm that the order of authors listed in the manuscript has been approved by all of us. We confirm that we have given consideration to the protection of intellectual property associated with this work and that there are no impediments to publication. In so doing we confirm that we have followed the regulations of our institutions concerning intellectual property.

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“…Spring/Summer Although eastward movement of discharged Mississippi River water away from the hypoxic zone can occur at all times of the year, the warm months are a special case where eastward movement is common and can predominate. For six months of the spring and summer the prevailing winds of the Bermuda High strengthen the eastward flow of the Boundary Current and act to drive nearshore waters, the Louisiana Coastal Current, eastward and away from the Mississippi Trough (Scruton, 1956;Linton, 1968;Murray, 1976;Blaha and Sturges, 1978;Oetking et al, 1979a;Bedinger et al, 1981;Sklar and Turner, 1981;Crout and Hamiter, 1981;Halper et al, 1988, Martinez-Lopez andPares-Sierra, 1998;Wang et al, 1998;Chen et al, 2000;Lugo-Fernandez et al, 2001;Welsh and Inoue, 2002). Its prevalent summertime eastward movement along the Louisiana shelf can be viewed on the hundreds of satellite images displayed by Krug and Merrifield (2006).…”

Section: Interaction With Mississippi River Inputsmentioning

confidence: 99%

“…This current also pulls in nutrientbearing water from the cyclonic and anticyclonic deeperwater gyres off the Louisiana/Texas coast (Bogdanov, 1965;Muller-Karger et al, 1991;Walsh, 1991;Sahl et al, 1993Sahl et al, , 1997Sturges, 1993;Oey, 1995;Biggs et al, 1996;Martinez-Lopez and Pares-Sierra, 1998;Chen et al, 2000;Sturges and Leben, 2000;Ohlmann et al, 2001;Belabbassi, 2001;Hamilton and Berger, 2002;Welsh and Inoue, 2002;Krug and Merrifield, 2006;Figs. 1 and 2).…”

Section: Marine and Marb Nitrogenmentioning

confidence: 99%

“…2 and too small to be seen on the scale of the Loop and Western Boundary Currents in Fig. 1 to the east (Kutkuhn, 1963;Blaha and Sturges, 1978;Temple and Martin, 1979;Bedinger et al, 1981;Crout and Hamiter, 1981;Halper et al, 1988;Dowgiallo, 1994;Martinez-Lopez and Pares-Sierra, 1998;Wang et al, 1998;Vidal et al, 1999;Chen et al, 2000;Ohlmann et al, 2001;Welsh and Inoue, 2002;Lee and Mellor, 2003;Zavala-Hidalgo et al, 2003).…”

Section: Marine and Marb Nitrogenmentioning

confidence: 99%

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Marine modification of terrestrial influences on Gulf hypoxia: Part II

Krug¹,

Merrifield²

2007

Hydrol. Earth Syst. Sci.

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This study examines potential marine modification of two classes of terrestrial influence on Gulf hypoxia: (1) the flow of nutrient-rich water from the Mississippi/Atchafalaya River Basin and (2) the massive physical, hydrological, chemical and biological change associated with the Atchafalayas partial capture of the Mississippi River. The latter involves repartitioning of a total flow of about 20 000 m 3 sec 1 , equal to that of 13 Nile Rivers, and a sediment load of 210 million metric tonnes yr 1 ,nearly 20 times that delivered by all of the rivers of the East Coast of the USA. Also involved is the loss of hundreds-to-thousands of years of stored nutrients and organic matter to the Gulf from enormous coastal wetland loss. This study found that the oceanography of the Gulf minimises the impact of both classes of terrestrial influence from the Mississippi River and its nearby estuaries on Gulf hypoxia. Oceanographic conditions give events associated with the Atchafalaya River a disproportionately large influence on Gulf hypoxia. A truly holistic environmental approach which includes the full effects of this highly dynamic coastal area is recommended to better understand and control Gulf hypoxia.

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Circulation in the Gulf of Mexico induced by tides, wind and the Yucatan Current

Cited by 24 publications

References 14 publications

Population Structure of the Red Macroalga Botryocladia occidentalis (Børgesen) Kylin (Rhodymeniaceae, Rhodymeniales) in the Gulf of Mexico Before the Deepwater Horizon Oil Spill

Population Structure of the Red Macroalga Botryocladia occidentalis (Børgesen) Kylin (Rhodymeniaceae, Rhodymeniales) in the Gulf of Mexico Before the Deepwater Horizon Oil Spill

On the advection of upwelled water on the western Yucatan Shelf

Marine modification of terrestrial influences on Gulf hypoxia: Part II

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