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Julius A. Ellrich

Marine Ecologist (Biological sciences)

Alfred Wegener Institute for Polar and Marine Research, Helgoland, Germany

I am examining predator-prey interactions, predator nonconsumptive effects on prey populations, trait-mediated indirect interactions and the function of bioengineering species in benthic communities by using intertidal and subtidal organisms as model systems. I have been investigating benthic-pelagic coupling along the Canadian Atlantic coast, biological invasions on the Japanese Pacific coast and plastic pollution on European coasts. Currently, I am working on oyster (Ostrea edulis) restoration in the project RESTORE on Helgoland island, Germany. Contact: julius.ellrich@awi.de Website: http://juliusaellrich.weebly.com/

Publications

  • Sherker, Z. T., J. A. Ellrich & R. A. Scrosati (2017) Predator-induced shell plasticity in mussels hinders predation by drilling snails. Marine Ecology Progress Series 573: 167-175. DOI 10.3354/meps12194
  • Ehlers, S. M. & J. A. Ellrich (2017) First visual record or rare purple-colored dogwhelks (Nucella lapillus) on the Atlantic coast of Nova Scotia, Canada. F1000Research 5:2435. DOI 10.12688/f1000research 5:2435.
  • Scrosati, R. A. & J. A. Ellrich (2017) Unimodal relationship between small-scale barnacle recruitment and the density of pre-existing barnacle adults. PeerJ 5: e3444. DOI 10.7717/peerj.3444
  • Scrosati, R. A. & J. A. Ellrich (2016) A 12-year record of intertidal barnacle recruitment in Atlantic Canada (2005-2016): relationships with sea surface temperature and phytoplankton abundance. PeerJ 4: e2623. DOI 10.7717/peerj.2623
  • Ellrich, J. A. & R. A. Scrosati (2016) Water motion modulates predator nonconsumptive limitation of prey recruitment. Ecosphere 7(7):e01402. DOI 10.1002/ecs2.1402
  • Ellrich, J. A., R. A. Scrosati, C. Bertolini & M. Molis (2016) A predator has nonconsumptive effects on different life-history stages of a prey. Marine Biology 163:5 DOI 10.1007/s00227-015-2778-6
  • Ellrich, J. A., R. A. Scrosati, K. Romoth & M. Molis (2016) Adult prey neutralizes predator nonconsumptive limitation of prey recruitment. PLOS ONE 11(4): e0154572. DOI 10.1371/journal.pone.0154572
  • Ellrich J. A., R. A. Scrosati & M. Molis (2015) Predator nonconsumptive effects on prey recruitment weaken with recruit density. Ecology 96(3): 611-616. DOI 10.1890/14-1856.1
  • Ellrich J. A., R. A. Scrosati & W. Petzold (2015) Predator density affects nonconsumptive predator limitation of prey recruitment field experimental evidence. Journal of Experimental Marine Biology and Ecology 472: 72-76. DOI 10.1016/j.jembe.2015.07.005
  • Ellrich J. A., R. A. Scrosati & M. Molis (2015) Predator nonconsumptive effects on prey recruitment. Bulletin of the Ecological Society of America 96(3): 478-480. DOI 10.1890/0012-9623-96.3.478
  • Beermann A. J., J. A. Ellrich, M. Molis & R. A. Scrosati (2013) Effects of seaweed canopies and adult barnacles on barnacle recruitment: the interplay of positive and negative influences. Journal of Experimental Marine Biology and Ecology 448: 162-170. DOI 10.1016/j.jembe.2013.07.001
  • Molis M., I. Preuss, A. Firmenich & J. Ellrich (2011) Predation risk indirectly enhances survival of seaweed recruits but not intra-specific competition in an intermediate herbivore species. Journal of Ecology 99(3): 807-817. DOI 10.1111/j.1365-2745.2011.01800.x
  • Ehlers, S. M., R. A. Scrosati & J. A. Ellrich (2017) Nonconsumptive predator effects on prey demography: Dogwhelk cues decrease benthic mussel recruitment. BioRxiv, doi: https://doi.org/10.1101/172692
  • Ellrich, J. A. & R. A. Scrosati (2017) Maximum water velocities in wave-exposed rocky intertidal habitats from Deming Island, Atlantic coast of Nova Scotia, Canada. Pangaea. doi: https://doi.pangaea.de/10.1594/PANGAEA.880722
  • Scrosati, R. A. & J. A. Ellrich (2017) Unimodal relationship between small-scale barnacle recruitment and the density of pre-existing barnacle adults. PeerJ 5: e3444 doi:10.771/peerj.3444/supp-1
  • Scrosati R. A. & J. A. Ellrich (2016) Intertidal barnacle recruitment in Nova Scotia (Canada) between 2005-2016: relationships with sea surface temperature and phytoplankton abundance. PeerJ Preprints. doi:10.7287/peerj.preprints.2355v1/supp-1 
  • Ellrich J. A., R. A. Scrosati, K. Romoth & M. Molis (2016) Barnacle recruit density (individuals dm-2) in the presence and absence of dogwhelks and adult barnacles. PLOS ONE. doi:10.1371/journal.pone.0154572.s001
  • Ellrich J. A., R. A. Scrosati & M. Molis (2016) Predator nonconsumptive effects on prey recruitment weaken with recruit density, supplementary material. Pangaea. doi:10.1594/PANGAEA.857409
  • Ellrich, J. A., R. A. Scrosati, C. Bertolini & M. Molis (2016) A predator has nonconsumptive effects on different life-history stages of a prey, supplementary material. Pangaea. doi:10.1594/PANGAEA.857351
  • Scrosati, R. A., Z. T. Sherker, S. M. Ehlers & J. A. Ellrich (2017) Nonconsumptive predator effects on prey: Dogwhelk cues limit mussel recruitment and trigger mussel shell plasticity that hinders predation. F1000Research 2017, 6:1425 (slides) DOI 10.7490/f1000research.1114677.1
  • Ellrich, J. A. & R. A. Scrosati (2016) Flushing away the stink of predators: The modulation of predator chemical cues by water motion. F1000Research 2016, 5:2079 (slides) DOI 10.7490/f1000research.1112922.1
  • Ellrich, J. A., R. A. Scrosati, C. Bertolini & M. Molis (2016) A predator has nonconsumptive effects on different life-history stages of a prey. F1000Research 2016, 5:909 (slides) DOI 10.7490/f1000research.1111901.1
  • Ellrich, J. A., R. A. Scrosati & M. Molis (2016) Predator non-consumptive effects on prey recruitment weaken with prey density. F1000Research 2016, 5:801 (slides) DOI 10.7490/f1000research.1111811.1
  • Beermann, A. J., J. A. Ellrich, M. Molis & R. A. Scrosati (2014) Effects of algal canopies and adult barnacles on intertidal barnacle recruitment. F1000Posters 2014, 5:122 (slides)
  • Scrosati, R. A. & J. A. Ellrich (2018) Nonconsumptive predator effects on prey demography. Gordon Research Conference on Predator-Prey Interactions, Ventura, California, USA. F1000Research 7:118. doi: 10.7490/f1000research.1115236.1
  • Ehlers, S. M., R. A. Scrosati & J. A. Ellrich (2018) Nonconsumptive predator effects on prey demography; dogwhelk cues decrease benthic mussel recruitment. Journal of Zoology 305: 240-245. DOI 10.111/jzo.12555
  • Scrosati, R. A. & J. A. Ellrich (2018) Ecological determinants of intertidal recruitment and metacommunity structure on the Atlantic coast of Nova Scotia. 4th World Conference on Marine Biodiversity, Montreal, Quebec, Canada
  • Scrosati, R. A. & J. A. Ellrich (2018) Benthic-pelagic coupling and bottom-up forcing in rocky intertidal communities along the Atlantic Canadian coast. Ecosphere 9(5): e02229 https://doi.org/10.1002/ecs2.2229
  • Scrosati, R. A. & J. A. Ellrich (2018) Thermal moderation of the intertidal zone by seaweed canopies in winter. Marine Biology 165:115.
  • Scrosati, R. A. & J. A. Ellrich (2018) Data on sea surface temperature, winds, and upwelling for the Atlantic coast of Nova Scotia, Canada. Figshare. Dataset. https://doi.org/10.6084/m9.figshare.6871571.v1
  • Scrosati, R. A. & J. A. Ellrich 2018 Photos of rocky intertidal locations along the Atlantic coast of Nova Scotia, Canada. Figshare https://doi.org/10.6084/m9.figshare.6937916.v1
  • Ellrich, J. A. & R. A. Scrosati 2018 Videos of rocky intertidal locations along the Atlantic coast of Nova Scotia, Canada. Figshare https://doi.org/10.6084/m9.figshare6936308.v1
  • Scrosati, R. A. & J. A. Ellrich 2018 Coastal winds, sea surface temperature, and upwelling in Atlantic Canada in two years differing in ENSO and NAO conditions. EarthArXiv Preprints. doi: 10.31223/osf.io/yfcp8
  • Scrosati, R. A. & J. A. Ellrich 2018 Benthic–pelagic links along the Atlantic Canadian coast. Bulletin of the Ecological Society of North America 99(4): e01422. https://doi.org/10.1002/bes2.1422
  • Yorisue, T., J. A. Ellrich & K. Momota 2019 Mechanisms underlying predator-driven biotic resistance against introduced barnacles on the Pacific coast of Hokkaido, Japan. Biological Invasions 21(7): 2345-2356. https://doi.org/10.1007/s10530-019-01980-4
  • Scrosati, R. A. & J. A. Ellrich 2019 A 5-year study (2014-2018) of the relationship between coastal phytoplankton abundance and intertidal barnacle size along the Atlantic Canadian coast. PeerJ 7: e6892. https://doi.org/10.7717/peerj.6892
  • Scrosati, R. A. & J. A. Ellrich 2020 Marked contrast in wind-driven upwelling on the southeastern Nova Scotia coast in July of two years differing in ENSO conditions. Oceanological and Hydrobiological Studies 49(1): 81-87. DOI: 10.1515/ohs-2020-0008
  • Ehlers, S. M. & J. A. Ellrich 2020 First record of 'plasticrusts' and 'pyroplastic' from the Mediterranean Sea. Marine Pollution Bulletin 151: 110845. http://doi.org/10.1016/j.marpolbul.2019.110845
  • Ellrich, J. A. 2020. Feeding for facilitation? Frontiers in Ecology and the Environment 18(8): 464. https://doi.org/10.1002/fee.2259
  • Scrosati, R. A., J. A. Ellrich & M. J. Freeman. 2020. Daily SST measured at 8 wave-exposed intertidal locations along the Nova Scotia coast (May 2015 to June 2017). Figshare. https://doi.org/10.6084/m9.figshare.12058962.v1
  • Scrosati, R. A. & J. A. Ellrich. 2020. Abundance of seaweeds and sessile invertebrates at the high and mid-intertidal zones in wave-exposed habitats along the Nova Scotia coast (2017). Figshare. https://doi.org/10.6084/m9.figshare.12058821.v1
  • Yorisue, T., J. A. Ellrich, K. Momota. 2019. Data from: Mechanisms underlying predator-driven biotic resistance against introduced barnacles on the Pacific coast of Hokkaido, Japan. Dryad Digital Repository. doi: https://doi.org/10.5061/dryad.g085g05
  • Ellrich, J. A., T. Yorisue & K. Momota. 2020. Limpet disturbance effects on barnacle recruitment are related to recruitment intensity but not recruit size. PeerJ 8: e9190. https://doi.org/10.7717/peerj.9190
  • Scrosati, R. A. & J. A. Ellrich. 2020. Latitudinal and seasonal changes in intertidal sea surface temperature along the Atlantic coast of Nova Scotia, Canada. Frontiers in Marine Science 7: 592. https://doi.org/10.3389/fmars.2020.00592
  • Scrosati, R. A., J. A. Ellrich & M. J. Freeman. 2020. Half-hourly changes in intertidal temperature at nine wave-exposed locations along the Atlantic Canadian coast: a 5.5 year study. Earth System Science Data Preprints https://doi.org/10.5194/essd-2020-161
  • Ellrich, J. A. 2020. Are Ascophyllum nodosum fronds a high tide refuge from benthic predators for mussels? Frontiers in Ecology and the Environment (in press)

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Co-workers & collaborators

Ricardo A. Scrosati

Full Professor - Antigonish, Nova Scotia, Canada

Ricardo A. Scrosati

Takefumi Yorisue

Takefumi Yorisue

Julius A. Ellrich's public data