Dr Arnaud Gruss

Fisheries Population Modeller

+64-4-386-0580

Qualifications:

* Master 2 in fisheries and aquatic sciences, Ecole National Supérieure d’Agronomie de Rennes (ENSAR), Agrocampus Ouest, Rennes, France * PhD in fisheries sciences, Centre de Recherche Halieutique Méditerranéenne et Tropicale (CRH), Sète, France

Biography:

Overview

I am a fisheries scientist based at NIWA Wellington.

My area of expertise is spatial and spatio-temporal modelling. I use a variety of modelling tools for my work, including primarily the vector autoregressive spatio-temporal (VAST) modelling platform and software packages created at NIWA such as CASAL, Casal2 and the Spatial Population Model (SPM). My projects support stock, habitat, climate-vulnerability, ecosystem and risk assessments and various resource management efforts.

Background

My background is in fisheries science. After completing my Masters at the Ecole National Supérieure d’Agronomie de Rennes (ENSAR; Agrocampus Ouest) in France, I did my Ph.D. at the Centre de Recherche Halieutique Méditerranéenne et Tropicale (CRH), in Sète, also in France.

Following this, I spent eight years in the USA at the University of Miami and then at the University of Washington School of Aquatic and Fishery Sciences as a postdoctoral research associate, then an Assistant Scientist, then an Acting Instructor. My research activities in the USA have mainly involved ecosystem modelling, species distribution modelling, and investigations with the VAST modelling platform.

I started work at NIWA Wellington, in the Population Modelling group, in September 2020.

Articles:

Hoyle SD, Campbell RA, Ducharme-Barth ND, Grüss A, Moore BR, Thorson JT, Tremblay-Boyer L, Winker H, Zhou S, Maunder MN (2024). Catch per unit effort modelling for stock assessment: a summary of good practices. Fisheries Research, 269: 106860.
Grüss A, Charsley AR, Thorson JT, Anderson OF, O’Driscoll RL, Wood B, Breivik ON, O’Leary CA (2023). Integrating survey and observer data improves the predictions of New Zealand spatio-temporal models. ICES Journal of Marine Science, 80: 1991-2007.
Grüss A, Thorson JT, Anderson OF, O’Driscoll RL, Heller-Shipley M, Goodman, S (2023). Spatially varying catchability for integrating research survey data with other data sources: case studies involving observer samples, industry cooperative surveys, and predators-as-samplers. Canadian Journal of Fisheries and Aquatic Sciences, 10.1139/cjfas-2023-0051.
Grüss A, McKenzie JR, Lindegren M, Bian R, Hoyle SD, Devine JA (2023). Supporting a stock assessment with spatio-temporal models fitted to fisheries-dependent data. Fisheries Research, 262: 106649.
Grüss A, Moore BR, Pinkerton MH, Devine JA (2023). Understanding the spatio-temporal abundance patterns of the major bycatch species groups in the Ross Sea region Antarctic toothfish (Dissostichus mawsoni) fishery. Fisheries Research, 262: 106647.
Charsley AR, Grüss A, Thorson JT, Rudd M, Craw S, David B, Williams E, Hoyle S (2023). Catchment-scale stream-network spatio-temporal models, applied to the freshwater stages of a diadromous fish species, longfin eel (Anguilla dieffenbachii). Fisheries Research, 259: 106583.
Goodman MC, Carroll G, Brodie S, Grüss A, Thorson JT, Kotwicki S, Holsman K, Selden B, Hazen EL, De Leo GA (2022). Shifting fish distributions impact predation intensity in a sub-Arctic ecosystem. Ecography, e06084.
Lavin CP, Gordó-Vilaseca C, Costello MJ, Shi Z, Stephenson F, Grüss A (2022). Warm and cold temperatures limit the maximum body length of teleost fishes across a latitudinal gradient in Norwegian waters. Environmental Biology of Fishes, 105: 1415-1429.
Ducharme-Barth ND, Grüss A, Vincent MT, Kiyofuji H, Aoki Y, Pilling G, Hampton J, Thorson JT (2022). Impacts of fisheries-dependent spatial sampling patterns on catch-per-unit-effort standardization: A simulation study and fishery application. Fisheries Research, 246: 106169.
Bolser DG, Egerton JP, Grüss A, Erisman BE (2021). Optic-acoustic analysis of fish assemblages at petroleum platforms. Fisheries, 46(11): 552-553.
Grüss A, Thorson JT, Stawitz CC, Reum JCP, Rohan SK, Barnes CL (2021). Synthesis of interannual variability in spatial demographic processes supports the strong influence of cold-pool extent on eastern Bering Sea walleye pollock (Gadus chalcogrammus). Progress in Oceanography, 194: 102569.
Grüss A, Pirtle JL, Thorson JT, Lindeberg MR, Neff AD, Lewis SG, Essington TE (2021). Modeling nearshore fish habitats using Alaska as a regional case study. Fisheries Research, 238: 105905.
Ng EL, Deroba JJ, Essington TE, Grüss A, Smith BE, Thorson JT (2021). Predator stomach contents can provide accurate indices of prey biomass. ICES Journal of Marine Science, 78(3): 1146-1159.
Reum JCP, Townsend H, Gaichas S, Sagarese S, Kaplan IC, Grüss A (2021). It’s not the destination, it’s the journey: multispecies model ensembles for ecosystem approaches to fisheries management, 8: 631839.

Egerton JP, Bolser DG, Grüss A, Erisman BE (2021). Understanding patterns of fish backscatter, size and density around petroleum platforms of the U.S. Gulf of Mexico using hydroacoustic data. Fisheries Research, 233: 105752.
Han Q, Grüss A, Shan X, Jin X, Thorson JT (2021). Understanding patterns of distribution shifts and range expansion/contraction for small yellow croaker (Larimichthys polyactis) in the Yellow Sea. Fisheries Oceanography, 30(1): 69-84.
Grüss A, Bolser DG, Erisman BE (2020). Modelling pulse fishery systems in data-limited situations. ICES Journal of Marine Science, 77(7-8): 69-84.
Hernvann P-Y, Gascuel D, Grüss A, Druon J-N, Kopp D, Perez I, Piroddi C, Robert M (2020). The Celtic Sea through space and time: ecosystem modeling to unravel fishing and climate change impacts on food-web structure and dynamics. Frontiers in Marine Science, 7: 1018.
Fu C, Xu Y, Guo C, Olsen N, Grüss A, Liu H, Barrier N, Verley P, Shin Y-J (2020). The cumulative effects of fishing, plankton productivity, and marine mammal consumption in a marine ecosystem. Frontiers in Marine Science, 7: 565699.
Grüss A, Rose KA, Justić D, Wang L (2020). Making the most of available monitoring data: A grid-summarization method to allow for the combined use of monitoring data collected at random and fixed sampling stations. Fisheries Research, 229: 105623.
Winship AJ, Thorson JT, Clarke ME, Coleman HM, Costa B, Georgian S, Gillett D, Grüss A, Henderson M, Hourigan TF, Huff D, Kreidler N, Pirtle J, Olson JV, Poti M, Rooper C, Sigler MF, Viehman S, Whitmire C (2020). Good practices for species distribution modeling of deep-sea corals and sponges: data collection, analysis, validation, and communication. Frontiers in Marine Science, 7: 303.
Bolser DG, Egerton JP, Grüss A, Loughran T, Beyea T, McCain K, Erisman BE (2020). Environmental and structural drivers of fish distributions among petroleum platforms across the U.S. Gulf of Mexico. Marine and Coastal Fisheries, 12: 142-163.
Grüss A, Thorson JT, Carroll G, Ng EL, Holsman KK, Aydin K, Kotwicki S, Morzaria-Luna HM, Ainsworth CH, Thompson KA (2020). Spatio-temporal analyses of marine predator diets from data-rich and data-limited systems. Fish and Fisheries, 21: 718-739.
Grüss A, Gao J, Thorson JT, Rooper CN, Thompson G, Boldt JL, Lauth R (2020). Estimating synchronous changes in condition and density in eastern Bering Sea fishes. Marine Ecology Progress Series, 635: 169-185.
Guo C, Fu C, Olsen N, Xu Y, Grüss A, Liu H, Verley Y, Shin Y-J (2020). Incorporating environmental forcing in developing ecosystem-based fisheries management strategies. ICES Journal of Marine Science, 77: 500-514.
Perryman HA, Tarnecki JH, Grüss A, Babcock EA, Sagarese SR, Ainsworth CH, Gray diLeone AM (2020). A revised diet matrix to improve the parameterization of a West Florida Shelf Ecopath model for understanding harmful algal bloom impacts. Ecological Modelling, 416: 108890.
Erisman B, Grüss A, Lícon-González H, Johnson AF, López-Sagástegui C (2020). Balancing conservation and utilization in spawning aggregation fisheries: A trade-off analysis of an overexploited marine fish. ICES Journal of Marine Science, 77: 148-161
Fu C, Xu Y, Grüss A, Bundy A, Shannon L, Heymans JJ, Halouani G, Akoğlu E, Lynam CP, Coll M, Fulton EA, Velez L, Shin Y-J (2020). Responses of ecological indicators to fishing pressure under environmental change: Exploring nonlinearity and thresholds. ICES Journal of Marine Science, 77(4): 1516-1531.
Dove D, Weijerman M, Grüss A, Acoba T, Smith JR (2020). Substrate mapping to inform ecosystem science and marine spatial planning around the Main Hawaiian Islands. In: Harris P, Baker E (Eds), Seafloor Geomorphology as Benthic Habitat: GeoHab Atlas of seafloor geomorphic features and benthic habitat, 2nd Edition. Elsevier, London, UK, pp. 619-640.
Weijerman M, Grüss A, Dove D, Asher J, Williams ID, Kelley C, Drazen J (2019). Shining a light on the composition and distribution patterns of mesophotic and subphotic fish communities in Hawai’i. Marine Ecology Progress Series, 630: 161-182.
Heyman WD, Grüss A, Biggs C, Kobara S, Farmer N, Karnaukas M, Lowerre-Barbieri S, Erisman B (2019). Cooperative monitoring, assessment and management of fish spawning aggregations and associated fisheries in the U.S. Gulf of Mexico. Marine Policy, 109: 103689
Grüss A, Biggs CR, Heyman WD, Erisman B (2019). Protecting juveniles, spawners or both: A practical statistical modelling approach for the design of marine protected areas. Journal of Applied Ecology, 56: 2328-2339.
Fu C, Xu Y, Bundy A, Grüss A, Coll M, Heymans JJ, Fulton EA, Shannon L, Halouani G, Velez L, Akoğlu E, Lynam CP, Shin Y-J (2019). Making ecological indicators management ready: Assessing the specificity, sensitivity, and threshold response of ecological indicators. Ecological Indicators, 105: 16-28.
Grüss A, Thorson JT (2019). Developing spatio-temporal models using multiple data types for evaluating population trends and habitat usage. ICES Journal of Marine Science, 76(6): 1748-1761.
Grüss A, Palomares ML, Poelen JH, Barile JR, Aldemita CD, Ortiz SR, Barrier N, Shin Y-J, Simons J, Pauly D (2019). Building bridges between global information systems on marine organisms and ecosystem models. Ecological Modelling, 398: 1-19.
Grüss A, Walter III JF, Babcock EA, Forrestal FC, Thorson JT, Lauretta MV, Schirripa MJ (2019). Evaluation of the impacts of different treatments of spatio-temporal variation in catch-per-unit-effort standardization models. Fisheries Research, 213: 75-93.
Grüss A, Drexler MD, Chancellor E, Ainsworth CH, Gleason JS, Tirpak JM, Love MS, Babcock EA (2019). Representing species distributions in spatially-explicit ecosystem models from presence-only data. Fisheries Research, 210: 89-105.
Bolser DG, Grüss A, Lopez MA, Reed EM, Mascareñas-Osorio I, Erisman BE (2018). The influence of sample distribution on growth model output for a highly-exploited marine fish, the Gulf corvina (Cynoscion othonopterus). PeerJ, 6: e5582.
Grüss A, Perryman HA, Babcock EA, Sagarese SR, Thorson JT, Ainsworth CH, Anderson EJ, Brennan K, Campbell MD, Christman MC, Cross S, Drexler MD, Drymon JM, Gardner CL, Hanisko DS, Hendon J, Koenig CC, Love M, Martinez-Andrade F, Morris J, Noble BT, Nuttall MA, Osborne J, Pattengill-Semmens C, Pollack AG, Sutton TT, Switzer TS (2018). Monitoring programs of the U.S. Gulf of Mexico: inventory, and development and use of a large monitoring database for mapping fish and invertebrate spatial distributions. Reviews in Fish Biology and Fisheries, 28: 667-691.
Harford WJ, Grüss A, Schirripa MJ, Sagarese SR, Bryan M, Karnauskas M (2018). Handle with care: establishing catch limits for fish stocks experiencing episodic natural mortality events. Fisheries, 43: 463-471.
Grüss A, Biggs C, Heyman WD, Erisman B (2018). Prioritizing monitoring and conservation efforts for fish spawning aggregations in the U.S. Gulf of Mexico. Scientific Reports, 8: 8473.
Grüss A, Drexler MD, Ainsworth CH, Roberts JJ, Carmichael RH, Putman NF, Richards PM, Chancellor E, Babcock EA, Love, MS (2018). Improving the spatial allocation of marine mammal and sea turtle biomasses in spatially-explicit ecosystem models. Marine Ecology Progress Series, 602: 255-274.
Morzaria Luna, HM, Ainsworth CH, Tarnecki JH, Grüss A (2018). Diet composition uncertainty determines impacts on fisheries following an oil spill. Ecosystem Services, 33: 187-198.
Grüss A, Drexler MD, Ainsworth CH, Babcock EA, Tarnecki JH, Love M (2018). Producing distribution maps for a spatially-explicit ecosystem model using large monitoring and environmental databases and a combination of interpolation and extrapolation. Frontiers in Marine Science, 5: 16.
Fu C, Travers-Trolet M, Velez L, Grüss A, Bundy A, Shannon LJ, Fulton EA, Akoglu E, Houle J, Coll M, Verley P, Heymans JJ, John E, Shin Y-J (2018). Risky business: the combined effects of fishing and changes in primary productivity on fish communities. Ecological Modelling, 368: 265-276.
Grüss A, Chagaris DD, Babcock EA, Tarnecki JH (2018). Assisting ecosystem-based fisheries management efforts using a comprehensive survey database, a large environmental database and generalized additive models. Marine and Coastal Fisheries, 10: 40-70.
Grüss A, Thorson, JT, Babcock EA, Tarnecki JH (2018). Producing distributions maps for informing ecosystem-based fisheries management using a comprehensive survey database and spatio-temporal models. ICES Journal of Marine Science, 75(1): 158-177.
Robinson, J, Graham NAJ, Grüss A, Gerry C, Bijoux J (2017). Fishery benefits from exploiting spawning aggregations not solely dependent on enhanced fish density. African Journal of Marine Science, 39(3): 269-278.
O’Farrell H, Grüss A, Sagarese SR, Babcock EA, Rose KA (2017). Ecosystem modeling efforts in the Gulf of Mexico: current status and future needs to address ecosystem-based fisheries management and restoration activities. Reviews in Fish Biology and Fisheries, 27(3): 587-614.
Grüss A, Rose KA, Simons J, Ainsworth CH, Babcock EA, Chagaris DD, de Mutsert K, Froeschke J, Himchak P, Kaplan IC, O’Farrell H, Zetina Rejon MJ (2017). Recommendations on the use of ecosystem modeling for informing ecosystem-based fisheries management and restoration outcomes in the Gulf of Mexico. Marine and Coastal Fisheries, 9(1): 281-295.
Grüss A, Thorson, JT, Babcock EA, Sagarese SR, Karnauskas M, Walter JF, Drexler MD (2017). Ontogenetic spatial distributions of red grouper (Epinephelus morio) and gag grouper (Mycteroperca microlepis) in the U.S. Gulf of Mexico. Fisheries Research, 193: 129-142.
Fu C, Olsen N, Taylor N, Grüss A, Batten S, Liu H, Verley P, Shin Y-J (2017). Spatial and temporal dynamics of predator-prey species interactions off western Canada. ICES Journal of Marine Science, 74(8): 2107-2119.
Reed J, Shannon L, Velez L, Akoglu E, Bundy A, Coll M, Fu C, Fulton EA, Grüss A, Halouani G, Heymans JJ, Houle J, John E, Le Loc’h F, Salihoglu B, Verley P, Shin Y-J (2017). Ecosystem indicators – accounting for variability in species’ trophic levels. ICES Journal of Marine Science, 74 (1): 158-169.
Grüss A, Harford WJ, Schirripa MJ, Velez L, Sagarese SR, Shin Y-J, Verley P (2016). Management strategy evaluation using the individual-based, multi-species modeling approach OSMOSE. Ecological Modelling, 340: 86-105.
Grüss A, Babcock EA, Sagarese SR, Drexler M, Chagaris DD, Ainsworth CH, Penta B, deRada S, Sutton TT (2016). Improving the spatial allocation of functional group biomasses in spatially-explicit ecosystem models: Insights from three Gulf of Mexico models. Bulletin of Marine Science, 92(4): 473-496.
Grüss A, Yemane D, Fairweather TP (2016). Exploring the spatial distribution patterns of South African Cape hakes using generalised additive models. African Journal of Marine Science, 38: 395-409.
Grüss A, Schirripa MJ, Chagaris D, Velez L, Shin Y-J, Verley P, Oliveros-Ramos R, Ainsworth CH (2016). Evaluating natural mortality rates and simulating fishing scenarios for Gulf of Mexico red grouper (Epinephelus morio) using the ecosystem model OSMOSE-WFS. Journal of Marine Systems, 154: 269-279.
Grüss A (2015). The Present and the Future of World and U.S. Fisheries: Interview with Daniel Pauly. Fisheries, 40(1): 37-41.
Grüss A, Schirripa MJ, Chagaris D, Drexler MD, Simons J, Verley P, Shin Y-J, Karnauskas M, Oliveros-Ramos R, Ainsworth CH (2015). Evaluation of the trophic structure of the West Florida Shelf in the 2000s using the ecosystem model OSMOSE. Journal of Marine Systems, 144: 30-47.
Grüss A, Robinson J (2015). Fish populations forming transient spawning aggregations: Should spawners always be the targets of spatial protection efforts? ICES Journal of Marine Science, 72(2): 480-497.
Grüss A (2014). Modelling the impacts of marine protected areas for mobile exploited fish populations and their fisheries: what we recently learnt and where we should be going. Aquatic Living Resources, 27: 107-133.
Grüss A, Robinson J, Heppell SS, Heppell SA, Semmens BX. (2014). Conservation and fisheries effects of spawning aggregation marine protected areas: What we know, where we should go and what we need to get there. ICES Journal of Marine Science, 71(7): 1515-1534.
Grüss A (2014). Solid baselines for preparing for the future of the ocean. BioScience, 64: 156-158.
Grüss A, Kaplan DM, Robinson J (2014). Evaluation of the effectiveness of marine reserves for transient spawning aggregations in data-limited situation. ICES Journal of Marine Science, 71(3): 435-449.
Grüss A, Drexler MD, Ainsworth CH. (2014). Using delta generalized additive models to produce distribution maps for spatially-explicit ecosystem models. Fisheries Research, 159: 11-24.
Grüss A (2013). Mange tes méduses! Réconcilier les cycles de la vie et la flèche du temps - Analyse d’ouvrage. Cybium, 37(4): 280-280.
Robinson J, Grüss A, Kaplan DM (2013). Conservation and fisheries effects of protecting aggregative spawners using no-take reserves. In: Status and Management of Reef Fish Spawning Aggregations in the Western Indian Ocean’. WIOMSA/SIDA/SFA/CORDIO WIOMSA Book Series No. 13, pp. 113-122.
Grüss A. Evaluation of the effectiveness of marine protected areas for mobile exploited fish populations and their fisheries: modeling approaches (2012). Cybium, 36(4): 520-520.
Grüss A, Kaplan DM, Lett C (2012). Estimating local settler-recruit relationship parameters for complex spatially-explicit models. Fisheries Research, 127-128: 34-39.
Garavelli L, Grüss A, Grote B, Chang N, Smith M, Verley P, Stenevik EK, Kaplan DM, Lett C. (2012). Modeling the dispersal of Cape hake ichthyoplankton. Journal of Plankton Research, 34(8): 655-669.
Grüss A, Kaplan DM, Hart DR (2011). Relative impacts of adult movement, larval dispersal and harvester movement on the effectiveness of reserve networks. PLoS ONE, 6(5): e19960.
Grüss A, Kaplan DM, Guénette S, Roberts CM, Botsford LW. (2011). Consequences of adult and juvenile movement for marine protected areas. Biological Conservation, 144: 692-702.
Kaplan, DM, Chassot E, Grüss A, Fonteneau A. (2010). Pelagic MPAs: The devil is in the details. Trends in Ecology & Evolution, 25: 62-63.