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Fig. 14. The provannid gastropod Provanna antiqua Squires, 1995 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 14. The provannid gastropod Provanna antiqua Squires, 1995, from early Oligocene seep deposits at Cerro La Salina (block 1, A, F; block 4, H; block 6, B, C, D, G; block 8, E), Talara Basin, northern Peru. A. NRM Mo187044, specimen with distinctive axial and spiral sculpture, in abapertural view. B. NRM Mo187045, specimen with distinctive sculpture and showing the basal groove, in apertural view. C. NRM Mo187046, specimen with weak axial sculpture in the upper whorl, in apertural view. D. NRM Mo187047, fragmentary specimen with mainly spiral sculpture, in apertural view. E. NRM Mo187048, nearly smooth specimen showing slightly sinuous growth lines, in apertural view. F. NRM Mo187049, specimen with small shoulder and sculpture mainly in upper part of whorls, in apertural view. G. NRM Mo187050, specimen with faint axial and spiral sculpture, in apertural view. H. NRM Mo187051, two specimens with small shoulder and sculpture mainly in upper part of whorls..

Fig. 13 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 13. Neritimorpha indet. (PRI 80015) from the early Cenozoic Lomitos cherts seep deposits near Negritos, Talara Basin, northern Peru.

Fig. 17 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 17. Neogastropod and opisthobranch gastropods from early Oligocene seep deposits at Cerro La Salina (block 2, A; block 4, B; block 6, E; block 7, D) and Belén seep site (C), Talara Basin, northern Peru. A, B. The buccinid Colus sekiuensis Kiel and Goedert, 2007. A. Large specimen (NRM Mo187062), showing shape of last whorl. B. NRM Mo187063, fragment of an early whorl. C. Buccinidae indet. (NRM Mo187064), fragmentary specimen. D. NRM Mo187065, the opisthobranch "Acteon" sp. in apertural (D1) and lateral (D2) views. E. The opisthobranch Cylichna sp. (NRM Mo187066).

Fig. 10 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 10. The possible neomphalid Retiskenea? sp. (PRI 80014) from the early Cenozoic Lomitos cherts seep deposits near Negritos, Talara Basin, northern Peru.

Fig. 7 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 7. The vesicomyid Pleurophopsis talarensis sp. nov., from early Oligocene seep deposits at Cerro La Salina (block 6, A, D, F–H; block 7, E; block 9, B, C), Talara Basin, northern Peru. A. Holotype (NRM Mo187019), right valve showing shell outline. B. Paratype (NRM Mo187022), posteriorly damaged, articulated specimen; view on dorsal side (B1) and on right valve (B2). C. Paratype (NRM Mo187020), right valve with posterior tip missing. D. Paratype (NRM Mo187023), internal mold of left valve showing anterior adductor muscle scar and pallial line (D1), arrow indicates onset of pallial; close-up on hinge area (D2. E. Paratype (NRM Mo187021), semi-articulated specimen, view on incomplete right valve). F. Paratype (NRM Mo187024), anterior part of fight valve. G. Paratype (NRM Mo187026), anterior part of right valve (G1), view on hinge area (G2). H. Paratype (NRM Mo187025), hinge area of right valve.

Fig. 12 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 12. Vetigastropoda from early Oligocene seep deposits at Cerro La Salina (block 1, A, D; block 2, C; block 9, B) Talara Basin, northern Peru. A, B. The colloniid Cantrainea sp. A. NRM Mo187040, specimen with base embedded in rock matrix in lateral (A1), oblique (A2) and apical (A3) views. B. NRM Mo187041, specimen with exposed base in lateral (B1) and basal (B2) views. C, D. The trochoid incertae sedis. C. NRM Mo187042. D. NRM Mo187043.

Fig. 6. The vesicomyid Pleurophopsis lithophagoides Olsson, 1931 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 6. The vesicomyid Pleurophopsis lithophagoides Olsson, 1931, from the early Oligocene Belén seep site, Talara Basin, northern Peru. A. Specimen with strongly sloping posterodorsal margin (NRM Mo187014), left valve (A1), right valve (A2), and dorsal view (A3). B. Specimen with rather straight posterodorsal margin (NRM Mo187015), left valve (B1), right valve (B2), and dorsal view (B3). C. Large specimen (NRM Mo187016), left valve (C1), right valve (C2), and dorsal view (C3). D. Close-up on anterior side of left valve (NRM Mo187018), showing anterior adductor muscle scar and onset of pallial line. E. Internal mold showing hinge and anterior muscle scars (NRM Mo187017). Abbreviations: aams, anterior adductor muscle scar; aprm, anterior pedal retractor scar; cg, connecting grove between aams and aprs.

Fig. 8 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 8. The vesicomyids "Vesicomya" tschudi Olsson, 1931 (A–C, E) and "Vesicomya" ramondi Olsson, 1931 (D), from early Oligocene seep deposits in the Talara Basin, northern Peru. A. Small specimen (NRM Mo187029) from Cerro La Salina block 1, view on left valve (A1), dorsal view (A2), view on anterodorsal side showing lunular incision (A3, arrow). B. Medium-sized specimen (NRM Mo187030) from Cerro La Salina block 5, view on left valve (B1) and dorsal view (B2). C. Holotype (PRI 1965) from Pajarabobo, view on left valve showing posterior end of pallial line (arrow). D. Holotype (PRI 1962) from Pajarabobo, view on right valve. E. Large left valve (NRM Mo187031) from Cerro La Salina block 5, view of the outer side.

Fig. 5 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 5. The lucinid Lucinoma zapotalensis (Olsson, 1931) from early Oligocene seep deposit at Cerro La Salina (block 1, C; block 9, A) and Cerros El Pelado (block 2, B), Talara Basin, northern Peru. A. Internal mold of large left valve (NRM Mo187011), left valve showing anterior adductor muscle scar (arrow). B. NRM Mo187012, external sculpture on right valve. C. Articulated specimen (NRM Mo187013), showing external sculpture on left valve (C1) and lunule and ligament in dorsal view (C2).

Fig. 2 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 2. Protobranch and pteriomorph bivalves from early Oligocene seep deposits from the Cerro La Salina (block 1, A; block 6, D; block 9, C) and Belén seep deposit (B), Talara Basin, northern Peru. A. Malletiid Neilo altamirano sp. nov. (NRM Mo187001, holotype), internal mold in lateral view (A1); external mold in lateral view (A2), arrows indicating the posterior ridge; view on the dorsal side (A3); close-up on the taxodont hinge dentition (A4). B. The possible nuculid Acila? sp. (NRM Mo187002), external mold of outer shell surface. C. The bathymodiolin Idas sp. (NRM Mo187003), internal mold of the entire specimen (C1), arrow indicating the taxondont teeth; close-up on taxodont teeth on posterodorsal shell margin (C2). D. Propeamussiidae indet. (NRM Mo187004), uncoated specimen showing internal radial ridges (D1); specimen coated with ammonium-chloride, highlighting external sculpture (D2).

Fig. 1 in Mollusks and a crustacean from early Oligocene methane-seep deposits in the Talara Basin, northern Peru

Fig. 1. Locality map of the seep deposits in the Talara Basin in northern Peru, where the here described mollusk and crustacean taxa were found adopted from Kiel et al. 2019).

FIGURE 4 in Internal anatomy of a brachyuran crab from a Late Cretaceous methane seep and an overview of internal soft tissues in fossil decapod crustaceans

FIGURE 4. MicroCT (µCT) scan results of the crab Secretanella sp. (ALMNH:Paleo:6522) from an upper Campanian methane seep limestone in Pennington County, South Dakota. The external surface of the crab is translucent to show the position of the preserved internal structures that the scan detected. Blue: cardiac stomach; yellow: esophagus; red: apodemes and mandibles. A, dorsal view. B, frontal view. C, right lateral view. D, closeup of dorsal view. E, closeup of frontal view. F, closeup of right lateral view. G, closeup of left lateral view.

FIGURE 3 in Internal anatomy of a brachyuran crab from a Late Cretaceous methane seep and an overview of internal soft tissues in fossil decapod crustaceans

FIGURE 3. Exposed gills of the crab Secretanella sp. (ALMNH:Paleo:6522) from an upper Campanian methane seep limestone in Pennington County, South Dakota and an interpretative drawing. 1-4: inferred number of gills;?af: possible afferent vessel.

FIGURE 1 in Internal anatomy of a brachyuran crab from a Late Cretaceous methane seep and an overview of internal soft tissues in fossil decapod crustaceans

FIGURE 1. Location of study area in South Dakota. A, paleobiogeographic map of most of North America during the Late Cretaceous (late Campanian) with the locality indicated by a red dot (modified from Sampson et al., 2010, figure 1). B, photo of the locality in Pennington County, South Dakota, USA, where the studied crab specimen was discovered. A massive limestone from the upper Campanian Didymoceras cheyennense ammonite Zone is located at the top of the hill on the right and many limestone pieces are found downslope.

FIGURE 2 in Internal anatomy of a brachyuran crab from a Late Cretaceous methane seep and an overview of internal soft tissues in fossil decapod crustaceans

FIGURE 2. The crab Secretanella sp. (ALMNH:Paleo:6522) from an upper Campanian methane seep limestone in Pennington County, South Dakota. A, carapace in dorsal view. B, closeups of the preserved gills in left branchial chamber. C, carapace in ventral view. D, carapace in frontal view.

FIGURE S3 in Internal anatomy of a brachyuran crab from a Late Cretaceous methane seep and an overview of internal soft tissues in fossil decapod crustaceans

FIGURE S3. Rotating illustration of the microCT (µCT) scan results of the crab Secretanella sp. (ALMNH:Paleo:6522) from an upper Campanian methane seep limestone in Pennington County, South Dakota. Blue: cardiac stomach; yellow: esophagus; red: apodemes and mandibles; purple-pink: possible anterior gastric muscles. See online version for rotation (https://palaeo-electronica.org/content/2023/3973- soft-tissues-in-fossil-crab).

FIGURE 5 in Internal anatomy of a brachyuran crab from a Late Cretaceous methane seep and an overview of internal soft tissues in fossil decapod crustaceans

FIGURE 5. Rotating illustration (spin around the dorsal and ventral sides) of the microCT (µCT) scan results of the crab Secretanella sp. (ALMNH:Paleo:6522) from an upper Campanian methane seep limestone in Pennington County, South Dakota. Blue: cardiac stomach; yellow: esophagus; red: apodemes and mandibles. See online version for rotation (https://palaeo-electronica.org/content/2023/3973-soft-tissues-in-fossil-crab).

opencc-by-4.0Jun 2024View details →

Dataset for "Machine Learning Driven Sensitivity Analysis of E3SM Land Model Parameters for Wetland Methane Emissions"

This dataset is a part of the paper "Machine Learning Driven Sensitivity Analysis of E3SM Land Model Parameters for Wetland Methane Emissions", accepted for publication in the Journal of Advances in Modeling Earth Systems (JAMES). <h2>Contents</h2> This dataset includes: <ul> <li>lhs-gen-190.csv: Training input LHS samples generated by <code>lhsgen.py</code>.</li> <li>lhs-gen-50-test.csv: Test input LHS samples generated by <code>lhsgen.py</code>.</li> <li>190-elm-samples.csv: Training input perturbed parameter samples for performing ELM simulations.</li> <li>50-elm-test-samples.csv: Test input perturbed parameter samples for performing ELM simulations.</li> <li>train_CH-CHA.csv: Contains the five ELM simulation output flux values for 240 samples (190 train + 50 test).</li> <li>lhsgen.py: Script for generating Latin Hypercube Samples.</li> <li>gpr-fit-new.py: Script for fitting Gaussian Process Regression (GPR) models.</li> <li>sobol-new.py: Script for performing Sobol sensitivity analysis.</li> </ul> <h2>Usage</h2> <ol> <li>lhsgen.py: <ul> <li>Use this script to generate the Latin Hypercube Samples for parameter sampling.</li> </ul> </li> <li>gpr-fit-new.py: <ul> <li>This script fits GPR models using the training samples provided in <code>lhs-gen-190.csv</code>.</li> <li>It tests the models using the input testing samples in <code>lhs-gen-50-test.csv</code>.</li> <li>The fitted GPR models are stored as <code>.joblib</code> files in the <code>gpr_models</code> directory.</li> <li>Corresponding cross-validation and R-squared values are stored in <code>.xlsx</code> files.</li> </ul> </li> <li>sobol-new.py: <ul> <li>This script performs Sobol sensitivity analysis using the fitted GPR models by reading the .joblib files.</li> <li>The Sobol indices are written to <code>.xlsx</code> files in the <code>results</code> directory.</li> </ul> </li> </ol>

opencc-by-4.0Jul 2024View details →

On the relationship between methane production in anaerobic incubations of peat material and in-situ methane emissions

These files are meant to accompany the publication: On the relationship between methane production in anaerobic incubations of peat material and in-situ methane emissions  Alexandra B. Cory1, Rachel M. Wilson1*, Olivia C. Ogles1, Patrick M. Crill2, Zhen Li3, Kuang-Yu Chang3, Samantha Bosman1, EMERGE Project Coordinators4, Isogenie Field Team5, Virginia I. Rich3, and Jeffrey P. Chanton1 <a name="_Hlk72229759"></a>1Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, FL, <a name="_Hlk72229408"></a>USA 2Dept of Geological Sciences and Bolin Centre for Climate Research, Stockholm University; Stockholm, 106 91 Stockholm, Sweden <a name="_Hlk72229459"></a>3Department of Microbiology, The Ohio State University, Columbus, OH, USA 4Lawrence Berkeley National Laboratory; Berkeley, CA, USA. 5EMERGE Project Coordinators list of authors and affiliations appears in Acknowledgements.   Corresponding author: Rachel M. Wilson (rmwilson@fsu.edu) Key Points: ·         Laboratory incubations predict field methane emissions from a peatland ·         Interannual variation is best represented by the modeled results ·         Daily-scale variation is driven by processes other than temperature and water table depth   This paper is being submitted for consideration for publication and includes the following archived files: The file:   (1)    UPLOAD_chamber_CO2_and_CH4_with_T.xlsx contains 3 tabs of data measured from the field: (1) CH4 daily, (2) CO2 daily, (3) temp.   The first tab, CH4 daily contains the measured methane fluxes from the field auto chambers spanning 2012-2018. Column headers are             Date:  date of year measurement taken             DOY:  day of year measurement taken             seqday: sequential day of measurement since 01/01/2002 year: year of measurement site: indicates the autochamber site from which the data are measured cH4_flx (mg CH4/m2/d): measured methane emission in milligrams CH4 per m2 per day gC/m2/d: fluxes in grams of C per m2 per day gC/m2/y: fluxes in grams of C per m2 per year   The second tab, CO2 daily contains the measured CO2 fluxes from the field auto chambers spanning 2012-2018. Column headers are similar to the CH4 daily tab revised for CO2 when appropriate.   The third tab, temp provides the temperature in the peat below the surface at 50cm, 20cm and 10cm for 2012-2018.   (2)    UPLOAD_Incubation_All_Temp_Timesaeries_Data.xlsx contains the CO2 and CH4 production for the incubation vials at the various temperature treatments. The headers are: Habitat: indicates the habitat type from which the incubated peat was taken Depth: indicates shallow (9-19cm) peat vs. deep (25-35cm) peat Temp_C: indicates the temperature at which the incubation was conducted in °C Sample: gives a laboratory unique sample identification code Day: indicates day of incubation CH4_umoles_gDry: is the accumulated CH4 production in micromoles per g dry weight of peat CO2_umoles_gDry: is the accumulated CO2 production in micromoles per g dry weight of peat.   (3)    Fen Python Code and Bog Python Code contain all the files required to recreate the modeling results for the Fen and bog respectively.