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  • 1
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    The cyst-theca relationship of the dinoflagellate cystTrinovantedinium pallidifulvum, with erection ofProtoperidinium lousianensissp. nov. and their phylogenetic position within theConicagroup (2016)
    In:  EPIC3Palynology, pp. 1-20, ISSN: 0191-6122
    Details
    Publication Date: 2016-10-25
    Description: We establish the cyst-theca relationship of the cyst species Trinovantedinium pallidifulvum Matsuoka 1987 based on germination experiments of specimens isolated from the Gulf of Mexico. We show that the motile stage is a new species, designated as Protoperidinium louisianensis. We also determine its phylogenetic position based on single-cell PCR of a single cell germinated from the Gulf of Mexico cysts. To further refine the phylogeny, we determined the LSU sequence through single-cell PCR of the cyst Selenopemphix undulata isolated from Brentwood Bay (Saanich Inlet, BC, Canada). The phylogeny shows that P. louisianensis is closest to P. shanghaiense, the motile stage of T. applanatum, and is consistent with the monophyly of the genus Trinovantedinium. Selenopemphix undulata belongs to a different clade than Selenopemphix quanta (alleged cyst of P. conicum), suggesting that the genus Selenopemphix is polyphyletic.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 2
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    Characterization of Hypoxia: Topic I Report for the Integrated Assessment on Hypoxia in the Gulf of Mexico (2021)
    NOAA/National Centers for Coastal Ocean Science | Silver Spring, MD
    In:  http://aquaticcommons.org/id/eprint/14643 | 403 | 2014-02-24 00:12:08 | 14643 | United States National Ocean Service
    Details
    Publication Date: 2021-06-30
    Description: Nutrient overenrichment from human activities is one of the major stresses affecting coastal ecosystems. There is increasing concern in many areas around the world that an oversupply of nutrients from multiple sources is having pervasive ecological effects on shallow coastal and estuarine areas. These effects include reduced light penetration, loss of aquatic habitat, harmfid algal blooms, a decrease in dissolved oxygen (or hypoxia), and impacts on living resources. The largest zone of oxygen-depleted coastal waters in the United States, and the entire western Atlantic Ocean, is found in the northern Gulf of Mexico on the Louisiana-Texas continental shelf. This zone is influenced by the freshwater discharge and nutrient flux of the Mississippi River system.This report describes the seasonal, interannual, and long-term variability in hypoxia in the northern Gulf of Mexico and its relationship to nutrient loading. It also documents the relative roles of natural and human-induced factors in determining the size and duration of the hypoxic zone.
    Keywords: Ecology ; Environment ; Fisheries ; Management
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 167
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  • 3
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    Hydrographic, biological, and nutrient characteristics of the water column in the Mississippi River Delta Bight, June, 1985 to December, 1985 (2021)
    Louisiana Universities Marine Consortium | Chauvin, LA
    In:  http://aquaticcommons.org/id/eprint/26966 | 30 | 2020-02-21 19:30:30 | 26966 | Louisiana Universities Marine Consortium (LUMCON)
    Details
    Publication Date: 2021-07-24
    Description: In June 1985, a focused study was initiated to assess the spatial and temporal extent, intensity, and potential causes of oxygen depletion in the northern Gulf of Mexico. Hypoxic bottom waters were studied along two transects (one off Cat Island Pass near Cocodrie and one off Belle Pass off Port Fourchon) in the Mississippi River Delta Bight area. Eight 2-day cruises were conducted aboard the R/V R.J. Russell or the R/V Pelican along these two transects between mid-June and mid-October. Sampling was most intense (bi-weekly) from mid-June through early September. A reduced sampling scheme (4 stations along the Cat Island Pass transect) was continued through the end of the year. In addition, two shelf-wide cruises were conducted from the Mississippi River to the Texas border during July and September.
    Description: Related data report: http://aquaticcommons.org/26970/
    Keywords: Oceanography ; Gulf of Mexico ; hypoxia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 146
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  • 4
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    Hydrographic, biological, and nutrient characteristics of the water column on the Louisiana shelf, July and September, 1985 (2021)
    Louisiana Universities Marine Consortium | Chauvin, LA
    In:  http://aquaticcommons.org/id/eprint/26970 | 30 | 2020-02-21 19:32:14 | 26970 | Louisiana Universities Marine Consortium (LUMCON)
    Details
    Publication Date: 2021-07-24
    Description: In June 1985, a focused study was initiated to assess the spatial and temporal extent, intensity, and potential causes of oxygen depletion in the northern Gulf of Mexico. Two shelf-wide, quasi-synoptic cruises were conducted from the Mississippi River to the Texas border during mid-July and early September, 1985. Cruises were conducted aboard the R/V Pelican on 15-20 July and 10-13 September. Stations were occupied along ten transects in 5 to 80 m water depth. Stations for Pelican Cruise I extended farther offshore and farther to the west than those for Pelican Cruise II. In addition to these shelf-wide cruises, hypoxic bottom waters were studied more frequently along two transects in the Mississippi River Delta Bight area.
    Description: Related data report: http://aquaticcommons.org/26966/
    Keywords: Oceanography ; Gulf of Mexico ; hypoxia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 150
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  • 5
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    Hydrographic, biological, and nutrient characteristics of the water column on the southeastern Louisiana coast, January, 1986 to November, 1986 (2021)
    Louisiana Universities Marine Consortium | Chauvin, LA
    In:  http://aquaticcommons.org/id/eprint/26995 | 30 | 2020-02-28 19:12:07 | 26995 | Louisiana Universities Marine Consortium (LUMCON)
    Details
    Publication Date: 2021-07-24
    Description: In June 1985, a focused study was initiated to assess the spatial and temporal extent, intensity, and potential causes of oxygen depletion in the northern Gulf of Mexico. Hypoxic bottom waters were studied along two transects (one off Cat Island Pass near Cocodrie and one off Belle Pass near Port Fourchon). The number of transects was reduced to one in 1986 (Transect C off Cat Island Pass) and the number of sample periods increased. Sixteen cruises were conducted aboard the R/V Acadiana or the R/V Pelican between late January and mid-November, 1986. Sampling was most intense (bi-weekly) from mid-April through late September. A reduced sampling scheme (four stations) was followed for the first two cruises. In addition a shelf-wide cruise was conducted from the Mississippi River to the Texas border during July, 1986.
    Description: Related data report: http://aquaticcommons.org/26996/
    Keywords: Oceanography ; hypoxia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 162
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  • 6
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    Hydrographic, biological, and nutrient characteristics of the water column on the Louisiana shelf, July, 1986 (2021)
    Louisiana Universities Marine Consortium | Chauvin, LA
    In:  http://aquaticcommons.org/id/eprint/26996 | 30 | 2020-02-28 19:09:46 | 26996 | Louisiana Universities Marine Consortium (LUMCON)
    Details
    Publication Date: 2021-07-24
    Description: In June 1985, a focused study was initiated to assess the spatial and temporal extent, intensity, and potential causes of oxygen depletion in the northern Gulf of Mexico. Hypoxic bottom waters were studied along two transects (one off Cat Island Pass near Cocodrie and one off Belle Pass near Port Fourchon). These cruises were continued in 1986 but on a single transect (see LUMCON Data Report No. 6). In addition, a shelf-wide cruise was conducted from the Mississippi River to the Texas border during July, 1986. Stations occupied during this cruise were similar to those sampled during shelf-wide cruises in 1985. The intent of these cruises was to provide comparative information on the temporal variability of oxygen-depleted bottom waters on the Louisiana shelf.The first part of the cruise was conducted on the R/V Acadiana between July 7 and July 10. Rough seas prevented continuation on the smaller ship. The remaining stations were sampled from on board the R/V Pelican between July 16 and July 17. While not synoptic in coverage, a few mid-depth stations were reoccupied during the second leg and hydrographic conditions were similar on the two dates.
    Description: Related data report: http://aquaticcommons.org/26995/
    Keywords: Oceanography ; hypoxia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 107
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  • 7
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    Hydrographic, biological, and nutrient characteristics of the water column on the Louisiana shelf during 1988 (2021)
    Louisiana Universities Marine Consortium | Chauvin, LA
    In:  http://aquaticcommons.org/id/eprint/27003 | 30 | 2020-03-05 18:38:41 | 27003 | Louisiana Universities Marine Consortium (LUMCON)
    Details
    Publication Date: 2021-07-24
    Description: Since 1985, several research cruises were conducted by our research team to assess the spatial and temporal extent, intensity, and potential causes of oxygen depletion in the northern Gulf of Mexico. Hypoxic bottom waters were studied along two transects in and near the Mississippi River Delta Bight in 1985 and 1986. In addition, shelf-wide cruises were conducted from the Mississippi River to the Texas border during July of 1985, 1986, and 1987. These cruises have provided us with exhaustive information concerning the temporal and spatial variability associated with the phenomenon of hypoxia on the Louisiana shelf. It was not our intent to continue assessment-type cruises during 1988. Opportunities existed, however, in conjunction with other research cruises and the LUMCON summer program to re-occupy stations along Transect C off Cat Island Pass near Cocodrie. In addition, the drought conditions in the upper Mississippi River basin during the spring and summer of 1988 resulted in a significant reduction in the flow rate of the Mississippi River. We were therefore compelled to conduct a shelf-wide cruise during mid-summer of 1988 to document the hydrographic conditions of the Louisiana shelf under low flow conditions of the Mississippi River and to assess the effects of this low flow on the phenomenon of hypoxia.The cruises along Transect C were conducted on board the R/V Pelican as part of a research effort named LaSER for data in April and as part of the LUMCON summer program for the remainder. The shelf-wide cruise was conducted on board the R/V Acadiana from August 12 through August 16, 1988.
    Keywords: Oceanography
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 112
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  • 8
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    Hydrographic, biological, and nutrient characteristics of the water column on the Louisiana shelf, July, 1987 (2021)
    Louisiana Universities Marine Consortium | Chauvin, LA
    In:  http://aquaticcommons.org/id/eprint/27002 | 30 | 2020-03-05 18:35:01 | 27002 | Louisiana Universities Marine Consortium (LUMCON)
    Details
    Publication Date: 2021-07-24
    Description: Beginning in 1985, several research cruises were conducted by our research team to assess the spatial and temporal extent, intensity, and potential causes of oxygen depletion in the northern Gulf of Mexico. Hypoxic bottom waters were studied along two transects in and near the Mississippi River Delta Bight in 1985 and 1986. In addition, shelf-wide cruises were conducted from the Mississippi River to the Texas border during July of both years. The intent of these cruises was to provide comparative information on the temporal variability of oxygen-depleted bottom waters on the Louisiana shelf.The bi-weekly cruises along the southeastern Louisiana shelf were discontinued in 1987. A shelf-wide cruise, however, was conducted in July, 1987 to continue the studies of temporal variability on the Louisiana shelf. The cruise was conducted on the R/V Pelican from July 1 through July 5.
    Keywords: Oceanography ; hypoxia
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 110
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  • 9
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    Managing coastal resources in the 21st century (2007)
    Ecological Society of America
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © Ecological Society of America, 2007. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Frontiers in Ecology and the Environment 5 (2007): 43-48, doi:10.1890/1540-9295(2007)5[43:MCRITS]2.0.CO;2.
    Description: Coastal ecosystems are increasingly dominated by humans. Consequently, the human dimensions of sustainability science have become an integral part of emerging coastal governance and management practices. But if we are to avoid the harsh lessons of land management, coastal decision makers must recognize that humans are one of the more coastally dependent species in the biosphere. Management responses must therefore confront both the temporal urgency and the very real compromises and sacrifices that will be necessary to achieve a sustainable coastal ecosystem, one that is economically feasible, socially just, and ecologically sound.
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 10
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    Supporting Spartina: Interdisciplinary perspective shows spartina as a distinct solid genus (2019)
    Ecological Society of America
    Details
    Publication Date: 2022-10-27
    Description: Author Posting. © Ecological Society of America, 2019. This article is posted here by permission of Ecological Society of America for personal use, not for redistribution. The definitive version was published in Ecology (2019): e02863, doi:10.1002/ecy.2863.
    Description: In 2014, a DNA‐based phylogenetic study confirming the paraphyly of the grass subtribe Sporobolinae proposed the creation of a large monophyletic genus Sporobolus, including (among others) species previously included in the genera Spartina, Calamovilfa, and Sporobolus. Spartina species have contributed substantially (and continue contributing) to our knowledge in multiple disciplines, including ecology, evolutionary biology, molecular biology, biogeography, experimental ecology, biological invasions, environmental management, restoration ecology, history, economics, and sociology. There is no rationale so compelling to subsume the name Spartina as a subgenus that could rival the striking, global iconic history and use of the name Spartina for over 200 yr. We do not agree with the subjective arguments underlying the proposal to change Spartina to Sporobolus. We understand the importance of both the objective phylogenetic insights and of the subjective formalized nomenclature and hope that by opening this debate we will encourage positive feedback that will strengthen taxonomic decisions with an interdisciplinary perspective. We consider that the strongly distinct, monophyletic clade Spartina should simply and efficiently be treated as the genus Spartina.
    Description: We are grateful to the many colleagues, students and eight anonymous expert taxonomists from Argentina, United States, Spain, UK, and Uruguay for sharing their opinions, perspectives, and ideas, improving our reasoning and encouraging us to initiate this debate. The authors’ positions are personal, and do not necessarily reflect the organizations or networks they represent or with which they are affiliated. We are also deeply grateful to two anonymous reviewers as well as to the Editor‐in‐Chief Don Strong who supplied excellent insight that truly improved our work.
    Keywords: Botanical nomenclature ; Coastal ecology ; Cordgrass ; Integrative analysis ; Interdisciplinary decisions ; Salt marsh
    Repository Name: Woods Hole Open Access Server
    Type: Article
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