Recent Projects

Ellrich, J. A., S. Furukuma & S. M. Ehlers (2023) Plasticrust generation and degeneration in rocky intertidal habitats
contribute to microplastic pollution. Science of the Total Environment 876: 162787.
https://doi.org/10.1016/j.scitotenv.2023.162787

Furukuma, S., J. A. Ellrich & S. M. Ehlers (2022) Frequent observations of novel plastic forms in the Ariho River estuary, Honshu, Japan. Science of the Total Environment 848: 157638. https://doi.org/10.1016/j.scitotenv.2022.157638

Ehlers, S. M., J. A. Ellrich & J. H. E. Koop (2022) Microplastic load and polymer type composition in European rocky intertidal snails: Consistency across locations, wave exposure and years. Environmental Pollution 292: 118280.
doi: 10.1016/j.envpol.2021.118280

Ellrich, J. A. & S. M. Ehlers (2022) Field observations in pebble beach habitats link plastiglomerate to pyroplastic
via pebble clasts. Marine Pollution Bulletin 174: 113187. doi: 10.1016/j.marpolbul.2021.113187

Ehlers, S. M., J. A. Ellrich & I. Gestoso (2021) Plasticrusts derive from maritime ropes scouring across raspy rocks.
Marine Pollution Bulletin 172: 112841. doi: 10.1016/j.marpolbul.2021.112841

Ehlers, S. M. & J. A. Ellrich (2020) First record of 'plasticrusts' and 'pyroplastic' from the Mediterranean Sea. Marine Pollution Bulletin 151: 110845. doi: 10.1016/j.marpolbul.2019.110845 - MICRO 2020 Poster

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. Doi: 10.7717/peerj.9190 - ESA 2020 Poster

See also: Ellrich, J. A., T. Yorisue & K. Momota (2020) Predator snails fend off the invasion of barnacles in Japan. The Conversation, 2 June 2020

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. (link)

Scrosati, R. A., M. J. Freeman & J. A. Ellrich (2020) The subhabitat dependence of biogeographic pattern.
Frontiers in Ecology and Evolution 8: 550612. (link)

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 12: 2695-2703. https://doi.org/10.5194/essd-12-2695-2020

Daily maximum temperature (red line), minimum temperature (blue line) and sea surface temperature (black line) at nine intertidal locations (L1 to L9, from north to south) surveyed between April 2014 and October 2019.

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 (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

An example of barnacle (Semibalanus balanoides) size differences from the Atlantic coast of Nova Scotia: barnacles from (A) Glasgow Head and (B) Western Head (see map below for locations). Pictures: R. A. Scrosati (August 2018)

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

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 (link)

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

Ellrich, J. A. (2018) Mesh scourers measuring mussel recruitment in Tor Bay Provincial Park, Nova Scotia, Canada.
Figshare https://doi.org/10.6084/m9.figshare.6261965.v1

Scrosati, R. A. & J. A. Ellrich (2018) Thermal moderation of the intertidal zone by seaweed canopies in winter. Marine Biology 165:115. https://doi.org/10.1007/s00227-018-3374-3 (link)

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 https://doi.org/10.1111/jzo.12555

Ellrich, J. A. (2018) Installing experimental cages to examine predator cue effects on mussel recruitment.
Figshare https://doi.org/10.6084/m9.figshare.5877408.v1

Ellrich, J. A. (2018) Submerged experimental cages to examine predator cue effects on on mussel recruitment.
Figshare https://doi.org/10.6084/m9.figshare.6263090.v1

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 (link)

Ellrich, J. A. (2017) Installation of experimental cages to examine predator nonconsumptive effects on prey. Figshare
https://doi.org/10.6084/m9.figshare.5480476.v1

Ehlers, S. M. & J. A. Ellrich (2017) First visual record of rare purple-colored dogwhelks (Nucella lapillus) on the Atlantic coast of Nova Scotia, Canada. F1000Research 5:2435. DOI 10.12688/f1000research 5:2435. (link)

Ellrich, J. A. (2017) Collecting dogwhelks (Nucella lapillus) for field experiments.
Figshare https://doi.org/10.6084/m9.figshare.5497060.v1

see also: Ehlers, S. M. & J. A. Ellrich 2017. Purple is possible, but rare. F1000Research blog (link)

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 (link)

Typical view of a wave-exposed, high-intertidal habitat on the Gulf of St. Lawrence coast of Nova Scotia in June, showing barnacle adults (a) and recruits (r). The sampling quadrat is 10 cm × 10 cm (picture: R. A. Scrosati).

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 (link)

Pictures of the studied habitat taken in June in different years. (A) View showing several adult barnacles that survived the previous winter and many recruits that appeared during the spring. (B) View showing a higher abundance of recruits and only one adult barnacle (pictures: R. A. Scrosati).

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 (link)

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 (link) (pictures)

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 (pictures) (link)

Ellrich J. A., R. A. Scrosati & M. Molis (2015) Predator nonconsumptive effects on prey recruitment weaken with recruit density. Ecology 96(3): 611-616 (link) (picture download)

Check out the construction of our cages: (picture download)

Lab work during winter (picture download)

Completed cages, Winter 2012

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 (link)
(picture download)

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 (link)

Sampling biodiversity in Atlantic Nova Scotia, summer 2015 (see more)

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 (link) (picture download)

Ellrich, J. A. (2017) Wire sensors measuring whiplash by a seaweed (Ascophyllum nodosum) canopy.
Figshare https://doi.org/10.6084/m9.figshare5480479.v1

Co-authors, from left to right: R. A. Scrosati, J. A. Ellrich, M. Molis, A. J. Beermann, Atlantic coast, Spring 2012 (picture: R. A. Scrosati)

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 (link) (picture download)

2008 Freshwater mussel conservation project, Westerwald, Germany (picture download)

Ellrich, J. A. (2018) Freshwater pearl mussel (Margaritifera margaritifera) glochidium. Figshare https://doi.org/10.6084/mp.figshare.6233552.v1

This video was included in the Dutch documentary Ernst's OnderWaterWereld #9 zoetwatermosselen by the Hoogheemraadschap van Delfland.

2007 Comparative studies of radular morphology in trochids (Gastropoda), BSc thesis (picture download)