An Annotated List of Auchenorrhyncha and Heteroptera Collected in the Coastal Salt Marshes of the Mississippi Delta in Louisiana

Sokolov, I. M.; Chen, X.; Strecker, Rachel M.; Hooper‐Bùi, Linda M.

doi:10.1155/2018/1808370

Cited by 4 publications

(3 citation statements)

References 107 publications

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“…Re-mobilization of buried oil can cause chronic exposure of saltmarsh organisms, including terrestrial arthropods, which can adversely affect their abundances and community compositions [ 23 , 27 ]. Arthropods have a main role in food webs, which affect ecosystem functions as arthropods inhabit high diversity of micro-habitats and niches [ 10 , 28 ]. The Exxon Valdez oil spill in Prince William Sound had significant long-term negative impacts on the saltmarsh birds, intertidal arthropods and their habitat [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Coupled effects of oil spill and hurricane on saltmarsh terrestrial arthropods

et al. 2018

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Terrestrial arthropods play an important role in saltmarsh ecosystems, mainly affecting the saltmarsh’s primary production as the main consumers of terrestrial primary production and decomposition. Some of these arthropods, including selected insects and spiders, can be used as ecological indicators of overall marsh environmental health, as they are differentially sensitive to ecological stressors, such as land loss, erosion, oil spills, and tropical storms. In the present study, we used terrestrial arthropods collected from seven (three lightly-oiled, four heavily-oiled) sites in Barataria Bay and from three unoiled reference sites in Delacroix, Louisiana, to determine the impacts of the distribution and re-distribution of Deepwater Horizon (DWH) oil on these saltmarsh ecosystems. A total of 9,476 and 12,256 insects were collected in 2013 and 2014, respectively. The results show that the terrestrial arthropods were negatively affected by the re-distribution of DWH oil by Hurricane Isaac in 2012, although the level of impacts varied among the arthropod groups. Moreover, the mean diversity index was higher (>1.5) in 2014 than in 2013 (<1.5) for all sites, suggesting a recovery trajectory of the saltmarsh arthropod population. The higher taxonomic richness observed in the reference sites compared to the oiled sites for both years also indicated long-term impacts of DWH oil to the saltmarsh arthropod community. Whereas a slow recovery of certain terrestrial arthropods was observed, long-term monitoring of arthropod communities would help better understand the recovery and succession of the marsh ecosystems.

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Section: Introductionmentioning

confidence: 99%

Coupled effects of oil spill and hurricane on saltmarsh terrestrial arthropods

et al. 2018

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“…Terrestrial arthropods were affected by oiling (Bik et al, 2012) and redistribution of oil after hurricanes (Bam et al, 2018) even in regions where plants were unaffected; therefore, arthropods have been suggested to be useful indicators of oil spill impacts on marsh habitats (Pennings et al, 2014). Several insect inventories and biodiversity studies were conducted after the DHOS, mostly at higher taxonomic levels from families to orders (Adams et al, 2017; Aker, 2020; Bam et al, 2018) or consisting of species within a single order (Sokolov et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Was the decline of saltmarsh tabanid populations after the 2010 oil spill associated with change in the larval food web?

2022

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Horse flies of the species Tabanus nigrovittatus and Tabanus acutus are native to coastal marshlands. Their larvae are apex invertebrate predators, and their development is dependent on the food web in the marsh sediment. Surveillance of T. nigrovittatus after the 2010 Deepwater Horizon Oil Spill in the Gulf of Mexico showed population crashes of adult flies in southeast Louisiana marshes near oil landfall, but not in southwest Louisiana where oil did not reach. Sediment collection in 2011 from Louisiana marshes showed a near‐complete absence of larvae in the southeast yet high numbers in the southwest. We hypothesized that oil contamination destroyed critical components of the larval food web and/or residual toxicity led to larval death. We used 18S rRNA gene metagenomics to identify components of the food web in larval guts and sediment from southeast and southwest Louisiana marshes. Sediment oil contamination, biochemistry, and toxicity could not explain the lack of larvae in the southeast, because oiling at our high‐tide mark sites was low at the time of the study and toxicity was independent of sediment biochemistry. Hexapods were the main food web components in tabanid larval guts. Abundance of stink bug, vinegar fly, and mosquito species in the sediment was positively associated with the presence of larvae. However, these taxa were enriched in southeastern (near oil) versus southwestern (unoiled reference) sediment, and thus, lack of major food web components due to oiling could not explain lack of larva in the east. We conclude that the immediate crash in adult populations in oiled regions was the main cause for the absence of larvae the following year. While most saltmarsh arthropod groups had rebounded within a year after the oil spill, recovery of saltmarsh horse flies was ongoing for 5 years.

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“…The majority of studies focusing on insects within Gulf Coast marshes primarily explore the effects of large-scale disasters such as the 2010 Deepwater Horizon oil spill or hurricanes (Bam et al, 2018;Husseneder et al, 2016Husseneder et al, , 2018McCall & Pennings, 2012). Others either had limited sampling periods (Adams et al, 2017;Bam et al, 2018;McCall & Pennings, 2012), many taxa that were not identified below the ordinal level (Bam et al, 2018;McCall & Pennings, 2012), focused on populations of a single species (Husseneder et al, 2016(Husseneder et al, , 2018, or inventoried species within a single order (Sokolov et al, 2018). Although Sokolov et al (2018) made note of known host plants for selected taxa, no study of Gulf Coast tidal marsh insects has directly explored how the plant texture and underlying salinity gradient affect both the distribution of insects and the ecological roles that they fulfill.…”

Section: Introductionmentioning

confidence: 99%

The influence of salinity and vegetation texture on the ecological roles of insects in tidal marshes in Louisiana

Aker,

Husseneder,

Foil

2023

Ecosphere

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Tidal marsh insect communities are influenced by both salinity and aspects of vegetation texture (vegetation diversity, plant density, and architectural structure). These factors affect the abundances and intra‐ and interguild interactions of these insects and should result in broad‐scale variation in the distribution and ecological functioning of tidal marsh insect communities along these gradients. However, this assumption has not been tested within Gulf Coast marshes, and the insect communities and their ecological roles are not well known. This study identifies how family‐level insect biodiversity varies by salinity and which factors are most important in affecting the distribution of insect functional feeding groups within Louisiana's coastal marshes. Insect family diversity was found to decrease as salinity increased for several indices. Vegetation texture and the underlying salinity gradient were found to be important factors affecting the distribution of free‐living sucking, stem‐boring, parasitic, and filtering functional feeding groups.

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An Annotated List of Auchenorrhyncha and Heteroptera Collected in the Coastal Salt Marshes of the Mississippi Delta in Louisiana

Cited by 4 publications

References 107 publications

Coupled effects of oil spill and hurricane on saltmarsh terrestrial arthropods

Coupled effects of oil spill and hurricane on saltmarsh terrestrial arthropods

Was the decline of saltmarsh tabanid populations after the 2010 oil spill associated with change in the larval food web?

The influence of salinity and vegetation texture on the ecological roles of insects in tidal marshes in Louisiana

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