scholarly journals Trophic niche partitioning in marine wood-borers revealed by stable isotope analysis

2020 ◽  
Vol 29 ◽  
pp. 33-43
Author(s):  
F Charles ◽  
P Riera ◽  
PG Sauriau ◽  
F Lantoine ◽  
B Lebreton ◽  
...  
Keyword(s):  
Isotope Analysis ◽  
Niche Partitioning ◽  
Nitrogen Sources ◽  
Nitrogen Isotope ◽  
Trophic Niche ◽  
Carbon And Nitrogen ◽  
Decaying Wood ◽  
The Impact ◽  
Wood Boring ◽  
Trophic Niches

Marine wood-borers often live in sympatry, sharing deadwood scattered at sea, both as food and habitat. In this study, carbon and nitrogen isotope compositions were determined to test the hypothesis that the trophic niches of Chelura terebrans, Limnoria quadripunctata, and Nototeredo norvagica obtained from softwood boards maintained in running, unfiltered seawater are different. Comparison of isotope compositions supports niche partitioning, with N. norvagica foraging primarily on wood, and crustaceans foraging on decaying wood. Needs and acquisition routes for nitrogen determine the trophic behavior of the species. Results presented here are valuable for assessing the impact of wood-boring species on each other, but also for evaluating the effect of the separation of carbon and nitrogen sources on the diversity of the interactions between co-existing species belonging to the same trophic guild.

scholarly journals Stable isotope analyses identify trophic niche partitioning between sympatric terrestrial vertebrates in coastal saltmarshes with differing oiling histories

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11392
Author(s):  
Sydney Moyo ◽  
Hayat Bennadji ◽  
Danielle Laguaite ◽  
Anna A. Pérez-Umphrey ◽  
Allison M. Snider ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Oil Spills ◽  
Foraging Ecology ◽  
Isotope Analysis ◽  
Niche Partitioning ◽  
Trophic Niche ◽  
Bioindicator Species ◽  
Terrestrial Vertebrates ◽  
Oryzomys Palustris ◽  
Trophic Niches

Bioindicator species are commonly used as proxies to help identify the ecological effects of oil spills and other stressors. However, the utility of taxa as bioindicators is dependent on understanding their trophic niche and life history characteristics, as these factors mediate their ecological responses. Seaside sparrows (Ammospiza maritima) and marsh rice rats (Oryzomys palustris) are two ubiquitous terrestrial vertebrates that are thought to be bioindicators of oil spills in saltmarsh ecosystems. To improve the utility of these omnivorous taxa as bioindicators, we used carbon and nitrogen stable isotope analysis to quantify their trophic niches at saltmarshes in coastal Louisiana with differing oiling histories. We found that rats generally had lower trophic positions and incorporated more aquatic prey relative to seaside sparrows. The range of resources used (i.e.,trophic niche width) varied based on oiling history. Seaside sparrows had wider trophic niches than marsh rice rats at unoiled sites, but not at oiled sites. Trophic niche widths of conspecifics were less consistent at oiled sites, although marsh rice rats at oiled sites had wider trophic niches than rats at unoiled sites. These results suggest that past oiling histories may have imparted subtle, yet differing effects on the foraging ecology of these two co-occurring species. However, the temporal lag between initial oiling and our study makes identifying the ultimate drivers of differences between oiled and unoiled sites challenging. Even so, our findings provide a baseline quantification of the trophic niches of sympatric seaside sparrows and marsh rice rats that will aid in the use of these species as indicators of oiling and other environmental stressors in saltmarsh ecosystems.

Carbon and nitrogen isotope analysis of atrazine and desethylatrazine at sub-microgram per liter concentrations in groundwater

2012 ◽  
Vol 405 (9) ◽  
pp. 2857-2867 ◽  
Author(s):  
Kathrin Schreglmann ◽  
Martina Hoeche ◽  
Sibylle Steinbeiss ◽  
Sandra Reinnicke ◽  
Martin Elsner
Keyword(s):  
Isotope Analysis ◽  
Nitrogen Isotope ◽  
Carbon And Nitrogen ◽  
Nitrogen Isotope Analysis

The Use of Carbon and Nitrogen Stable Isotope Analysis to Characterize Food Web Changes in Aquatic Systems for Reclamation of Oil Sands Process-Affected Materials

2009 ◽  
Vol 44 (4) ◽  
pp. 313-322 ◽  
Author(s):  
Monalisa Elshayeb ◽  
Michael D. MacKinnon ◽  
D. George Dixon ◽  
Michael Power
Keyword(s):  
Food Web ◽  
Oil Sands ◽  
Isotope Analysis ◽  
Naphthenic Acid ◽  
Carbon Sources ◽  
Nitrogen Isotope ◽  
Isotopic Signatures ◽  
Carbon And Nitrogen ◽  
Aquatic Food ◽  
Northern Alberta

Abstract One strategy for reclamation of oil sands leases in northern Alberta is the construction of lakes and wetlands by capping oil sands process-affected material (OSPM) with water. To assess this approach, experimental sites containing a range of OSPM have been constructed to monitor the evolution of the resulting aquatic habitats. Stable isotopes of carbon and nitrogen were used to assess the effects of OSPM on aquatic food webs. Carbon and nitrogen isotopic signatures of sediment, dissolved inorganic and organic carbon, particulate organic matter, periphyton, plants, plankton, aquatic invertebrates, and fish were used to assess differences related to the naphthenic acid (NA) concentration in OSPM and reference sites. NAs are a principal contaminant of concern in OSPM. Sites were grouped into low (0 to 4 mg/L), medium (4 to 15 mg/L), and high (>15 mg/L) NA concentrations. There were no significant differences in food web area or length among the three NA groupings. In most cases, carbon isotope analyses of samples from low, medium, and high NA concentration sites were not significantly different, suggesting that OSPM is not a significant contributor to food web carbon sources. Significant differences were found in nitrogen isotope signatures between low, medium, and high NA sites. Ammonia from OSPM is suggested as the main contributor to δ15N enrichment.

scholarly journals Interactions between earliest Linearbandkeramik farmers and central European hunter gatherers at the dawn of European Neolithization

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Alexey G. Nikitin ◽  
Peter Stadler ◽  
Nadezhda Kotova ◽  
Maria Teschler-Nicola ◽  
T. Douglas Price ◽  
...  
Keyword(s):  
Central Europe ◽  
Isotope Analysis ◽  
Nitrogen Isotope ◽  
Western Anatolia ◽  
Hunter Gatherers ◽  
Central European ◽  
Carbon And Nitrogen ◽  
Farming Communities ◽  
Non Local ◽  
Range Of Variation

AbstractArchaeogenetic research over the last decade has demonstrated that European Neolithic farmers (ENFs) were descended primarily from Anatolian Neolithic farmers (ANFs). ENFs, including early Neolithic central European Linearbandkeramik (LBK) farming communities, also harbored ancestry from European Mesolithic hunter gatherers (WHGs) to varying extents, reflecting admixture between ENFs and WHGs. However, the timing and other details of this process are still imperfectly understood. In this report, we provide a bioarchaeological analysis of three individuals interred at the Brunn 2 site of the Brunn am Gebirge-Wolfholz archeological complex, one of the oldest LBK sites in central Europe. Two of the individuals had a mixture of WHG-related and ANF-related ancestry, one of them with approximately 50% of each, while the third individual had approximately all ANF-related ancestry. Stable carbon and nitrogen isotope ratios for all three individuals were within the range of variation reflecting diets of other Neolithic agrarian populations. Strontium isotope analysis revealed that the ~50% WHG-ANF individual was non-local to the Brunn 2 area. Overall, our data indicate interbreeding between incoming farmers, whose ancestors ultimately came from western Anatolia, and local HGs, starting within the first few generations of the arrival of the former in central Europe, as well as highlighting the integrative nature and composition of the early LBK communities.

scholarly journals Evaluation of two lipid removal methods for stable carbon and nitrogen isotope analysis in whale tissue

2020 ◽  
Vol 34 (18) ◽  
Author(s):  
Kerri J. Smith ◽  
Clive N. Trueman ◽  
Christine A.M. France ◽  
Markus J. Peterson
Keyword(s):  
Isotope Analysis ◽  
Nitrogen Isotope ◽  
Stable Carbon ◽  
Carbon And Nitrogen ◽  
Nitrogen Isotope Analysis

Stable carbon and nitrogen isotope analysis at Neolithic Çatalhöyük: evidence for human and animal diet and their relationship to households

2015 ◽  
Vol 57 ◽  
pp. 69-79 ◽  
Author(s):  
Jessica A. Pearson ◽  
Amy Bogaard ◽  
Mike Charles ◽  
Simon W. Hillson ◽  
Clark Spencer Larsen ◽  
...  
Keyword(s):  
Isotope Analysis ◽  
Nitrogen Isotope ◽  
Stable Carbon ◽  
Carbon And Nitrogen ◽  
Nitrogen Isotope Analysis ◽  
Animal Diet

Stable carbon and nitrogen isotope analysis of avian uric acid

2008 ◽  
Vol 22 (21) ◽  
pp. 3393-3400 ◽  
Author(s):  
Michael I. Bird ◽  
Elaine Tait ◽  
Christopher M. Wurster ◽  
Robert W. Furness
Keyword(s):  
Uric Acid ◽  
Isotope Analysis ◽  
Nitrogen Isotope ◽  
Stable Carbon ◽  
Carbon And Nitrogen ◽  
Nitrogen Isotope Analysis
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