Coupled effects of oil spill and hurricane on saltmarsh terrestrial arthropods
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 indic...
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| creator | Bam, Wokil Hooper-Bui, Linda M Strecker, Rachel M Adhikari, Puspa L Overton, Edward B |
| description | 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 ( |
| doi_str_mv | 10.1371/journal.pone.0194941 |
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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.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0194941</identifier><identifier>PMID: 29641552</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Analysis ; Animals ; Arthropoda ; Arthropods ; Arthropods - physiology ; Biodiversity ; Biology and Life Sciences ; Birds ; Coasts ; Computer and Information Sciences ; Crude oil ; Cyclonic Storms ; Ecology ; Ecology and Environmental Sciences ; Ecosystem biology ; Ecosystems ; Engineering and Technology ; Environmental aspects ; Environmental health ; Environmental Monitoring ; Environmental science ; Geography ; Hurricanes ; Insecta ; Insects ; Louisiana ; Oil spills ; Petroleum ; Petroleum Pollution ; Primary production ; Principal Component Analysis ; Public health ; Recovery ; Reference Values ; Shoreline protection ; Software ; Spartina alterniflora ; Spiders ; Terrestrial environments ; Tropical storms ; Water Pollutants, Chemical ; Wetlands</subject><ispartof>PloS one, 2018-04, Vol.13 (4), p.e0194941-e0194941</ispartof><rights>COPYRIGHT 2018 Public Library of Science</rights><rights>2018 Bam et al. 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Vanesa</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coupled effects of oil spill and hurricane on saltmarsh terrestrial arthropods</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2018-04-11</date><risdate>2018</risdate><volume>13</volume><issue>4</issue><spage>e0194941</spage><epage>e0194941</epage><pages>e0194941-e0194941</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>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.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>29641552</pmid><doi>10.1371/journal.pone.0194941</doi><tpages>e0194941</tpages><orcidid>https://orcid.org/0000-0002-7320-3496</orcidid><oa>free_for_read</oa></addata></record> |
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| source | MEDLINE; DOAJ Directory of Open Access Journals; Public Library of Science (PLoS) Journals Open Access; EZB-FREE-00999 freely available EZB journals; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Analysis Animals Arthropoda Arthropods Arthropods - physiology Biodiversity Biology and Life Sciences Birds Coasts Computer and Information Sciences Crude oil Cyclonic Storms Ecology Ecology and Environmental Sciences Ecosystem biology Ecosystems Engineering and Technology Environmental aspects Environmental health Environmental Monitoring Environmental science Geography Hurricanes Insecta Insects Louisiana Oil spills Petroleum Petroleum Pollution Primary production Principal Component Analysis Public health Recovery Reference Values Shoreline protection Software Spartina alterniflora Spiders Terrestrial environments Tropical storms Water Pollutants, Chemical Wetlands |
| title | Coupled effects of oil spill and hurricane on saltmarsh terrestrial arthropods |
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