Now showing items 1-20 of 38

  • Behaviour of sea urchin Strongylocentrotus droebachiensis grazing fronts: food-mediated aggregation and density-dependent facilitation 

    Lauzon-Guay, Jean-Sebastien, and Robert E. Scheibling. 2007. "Behaviour of sea urchin Strongylocentrotus droebachiensis grazing fronts: food-mediated aggregation and density-dependent facilitation." Marine Ecology Progress Series 329: 191-204. doi:10.3354/meps329191
    The occurrence of destructive grazing fronts is a common phenomenon in sea urchins, but mechanisms governing front formation and dynamics remain poorly understood. We experimentally examined the effect of kelp biomass ...
  • Community Dynamics on a Subtidal Cobble Bed Following Mass Mortalities of Sea Urchins 

    Scheibling, R. E., and B. G. Raymond. 1990. "Community Dynamics on a Subtidal Cobble Bed Following Mass Mortalities of Sea Urchins." Marine Ecology Progress Series 63(2-3): 127-146. doi:10.3354/meps063127
    The macrobenthic community of a shallow subtidal cobble bed at Eagle Head on the Atlantic coast of Nova Scotia [Canada] was monitored from ca 4 mo before to 41 mo after mass mortalities of sea urchins Strongylocentrotus ...
  • Community structure and organization of tidepools 

    Metaxas, Anna, and Robert E. Scheibling. 1993. "Community structure and organization of tidepools." Marine Ecology Progress Series 98(1-2): 187-198. doi:10.3354/meps098187
    Although tidepools are conspicuous components of rocky intertidal shores, their biotic communities have not been studied as extensively as those on emergent substrata. We examine processes regulating the structure of ...
  • Competitive interactions between the invasive green alga Codium fragile ssp tomentosoides and native canopy-forming seaweeds in Nova Scotia (Canada) 

    Scheibling, Robert E., and Patrick Gagnon. 2006. "Competitive interactions between the invasive green alga Codium fragile ssp tomentosoides and native canopy-forming seaweeds in Nova Scotia (Canada)." Marine Ecology Progress Series 325: 1-14. doi:10.3354/meps325001
    Two concurrent 2 yr experiments were conducted along the Atlantic coast of Nova Scotia (1) to examine competitive interactions between the invasive green alga Codium fragile ssp. tomentosoides and canopy-forming native ...
  • Detrital production in Nova Scotian kelp beds: patterns and processes 

    Krumhansl, Kira A., and Robert E. Scheibling. 2011. "Detrital production in Nova Scotian kelp beds: patterns and processes." Marine Ecology Progress Series 421: 67-+. doi:10.3354/meps08905
    Connectivity via the transport of detrital material from areas of high to low productivity may be an important determinant of secondary productivity and biodiversity in receiving communities. On the Atlantic coast of ...
  • Disease outbreaks associated with recent hurricanes cause mass mortality of sea urchins in Nova Scotia 

    Scheibling, R. E., C. Feehan, and J. -S Lauzon-Guay. 2010. "Disease outbreaks associated with recent hurricanes cause mass mortality of sea urchins in Nova Scotia." Marine Ecology Progress Series 408: 109-116. doi:10.3354/meps08579
    Field observations and laboratory experiments support the hypothesis that disease-induced mass mortality of the sea urchin Strongylocentrotus droebachiensis can be associated with hurricane events that introduce a ...
  • Estimating fertilization success in marine benthic invertebrates: A case study with the tropical sea star Oreaster reticulatus 

    Metaxas, Anna, Robert E. Scheibling, and Craig M. Young. 2002. "Estimating fertilization success in marine benthic invertebrates: A case study with the tropical sea star Oreaster reticulatus." Marine Ecology Progress Series 226: 87-101. doi:10.3354/meps226087
    Several factors can influence fertilization success, and for marine broadcast spawners, the main constraint is rapid dilution of gametes. Because the measurement of fertilization success in the field is logistically ...
  • Fatty acid profiles in the gonads of the sea urchin Strongylocentrotus droebachiensis on natural algal diets 

    Kelly, Jennifer R., Robert E. Scheibling, Sara J. Iverson, and Patrick Gagnon. 2008. "Fatty acid profiles in the gonads of the sea urchin Strongylocentrotus droebachiensis on natural algal diets." Marine Ecology Progress Series 373: 1-9. doi:10.3354/meps07746
    We examined fatty acid (FA) compositions of gonads of the green sea urchin Strongylocentrotus droebachiensis collected from a grazing aggregation (front) at the edge of a kelp bed and from barrens dominated by coralline ...
  • Fatty acids as dietary tracers in benthic food webs 

    Kelly, Jennifer R., and Robert E. Scheibling. 2011. "Fatty acids as dietary tracers in benthic food webs." Marine Ecology Progress Series 446: 1-22. doi:10.3354/meps09559
    Fatty acid (FA) analysis is a well-established tool for studying trophic interactions in marine habitats. However, its application to benthic food webs poses 2 particular challenges. First, unlike pelagic zooplankton, ...
  • Fatty acids tracers for native and invasive macroalgae in an experimental food web 

    Kelly, Jennifer R., Robert E. Scheibling, and Sara J. Iverson. 2009. "Fatty acids tracers for native and invasive macroalgae in an experimental food web." Marine Ecology Progress Series 391: 53-63. doi:10.3354/meps08234
    We assessed the potential of fatty acid (FA) markers for tracing primary production from an invasive green alga (Codium fragile ssp. fragile) and a native kelp (Saccharina longicruris) through 2 trophic levels in an ...
  • Fecal production by sea urchins in native and invaded algal beds 

    Sauchyn, Leah K., and Robert E. Scheibling. 2009. "Fecal production by sea urchins in native and invaded algal beds." Marine Ecology Progress Series 396: 35-48. doi:10.3354/meps08296
    To examine the role of fecal production by the sea urchin Strongylocentrotus droobachiensis in native and invaded algal assemblages in Nova Scotia, Canada, we examined the quantity (production rate by urchin feeding ...
  • Free-Space Availability and Larval Substratum Selection as Determinants of Barnacle Population-Structure in a Developing Rocky Intertidal Community 

    MINCHINTON, TE, and RE SCHEIBLING. 1993. "Free-Space Availability and Larval Substratum Selection as Determinants of Barnacle Population-Structure in a Developing Rocky Intertidal Community." Marine Ecology Progress Series 95(3): 233-244. doi:10.3354/meps095233
    Variation in settlement and recruitment of the barnacle Semibalanus balanoides (L.) was experimentally investigated in the high, mid and low intertidal zones at 2 adjacent sites (A and B) on a rocky shore in Nova Scotia, ...
  • Herbivory and community organization on a subtidal cobble bed 

    Scheibling, Robert E., Noreen E. Kelly, and Bruce G. Raymond. 2009. "Herbivory and community organization on a subtidal cobble bed." Marine Ecology Progress Series 382: 113-128. doi:10.3354/meps07965
    We examined the role of molluscan mesograzers (periwinkles Littorina littorea, limpets Testudinalia testudinalis and chitons Ischnochiton ruber) in mediating macroalgal succession after a mass mortality of sea urchins ...
  • Invasion-mediated shifts in the macrobenthic assemblage of a rocky subtidal ecosystem 

    Kelly, Jennifer R., Robert E. Scheibling, and Toby Balch. 2011. "Invasion-mediated shifts in the macrobenthic assemblage of a rocky subtidal ecosystem." Marine Ecology Progress Series 437: 69-78. doi:10.3354/meps09284
    We tracked changes in community composition that occurred with state shifts in the rocky subtidal ecosystem in Nova Scotia, Canada, from 1992 to 2008. At the beginning of our study, a dense aggregation of sea urchins was ...
  • Killer storms: North Atlantic hurricanes and disease outbreaks in sea urchins 

    Scheibling, Robert E., and Jean-Sebastien Lauzon-Guay. 2010. "Killer storms: North Atlantic hurricanes and disease outbreaks in sea urchins." Limnology and Oceanography 55(6): 2331-2338. DOI:10.4319/lo.2010.55.6.2331
    An increase in the incidence of disease in various marine organisms over the past few decades has been linked to ocean climate change. In Nova Scotia, Canada, mass mortalities of sea urchins, due to an amoebic disease, ...
  • Modelling phase shifts in a rocky subtidal ecosystem 

    Lauzon-Guay, Jean-Sebastien, Robert E. Scheibling, and Myriam A. Barbeau. 2008. "Modelling phase shifts in a rocky subtidal ecosystem." Marine Ecology Progress Series 375: 25-39. doi:10.3354/meps07758
    The rocky subtidal ecosystem of the Atlantic coast of Nova Scotia is characterised by 2 community states, kelp beds and urchin barrens that alternate on a decadal time scale. While the shift from barrens to a kelp bed ...
  • Modelling phase shifts in a rocky subtidal ecosystem 

    Lauzon-Guay, Jean-Sebastien, Robert E. Scheibling, and Myriam A. Barbeau. 2009. "Modelling phase shifts in a rocky subtidal ecosystem." Marine Ecology Progress Series 375: 25-39. doi:10.3354/meps07758
    The rocky subtidal ecosystem of the Atlantic coast of Nova Scotia is characterised by 2 community states, kelp beds and urchin barrens that alternate on a decadal time scale. While the shift from barrens to a kelp bed ...
  • Non-Occurrence of Free-Living Paramoeba-Invadens in Water and Sediments of Halifax Harbour Nova Scotia Canada 

    Jellett, J. F., J. A. Novitsky, J. A. Cantley, and R. E. Scheibling. 1989. "Non-Occurrence of Free-Living Paramoeba-Invadens in Water and Sediments of Halifax Harbour Nova Scotia Canada." Marine Ecology Progress Series 56(1-2): 205-209. doi:10.3354/meps056205
    Seawater and sediment samples from various sites in or near Halifax Harbour were cultured for Paramoeba as were tissues of the natural sea urchin host Stronglyocentrotus droebachiensis sampled from Halifax Harbour. An ...
  • Physical and biological factors influencing mussel (Mytilus trossulus, M. edulis) settlement on a wave-exposed rocky shore 

    Hunt, Heather L., and Robert E. Scheibling. 1996. "Physical and biological factors influencing mussel (Mytilus trossulus, M. edulis) settlement on a wave-exposed rocky shore." Marine Ecology Progress Series 142(1-3): 135-145. doi:10.3354/meps142135
    Settlement rates of mussels Mytilus trossulus and M. edulis on artificial collectors (aquarium filter wool) and natural substrata were measured in tidepools and on emergent rock in recently ice-scoured and non-scoured ...
  • Predicting wave dislodgment of mussels: variation in attachment strength with body size, habitat, and season 

    Hunt, HL, and RE Scheibling. 2001. "Predicting wave dislodgment of mussels: variation in attachment strength with body size, habitat, and season." Marine Ecology Progress Series 213: 157-164. doi:10.3354/meps213157
    Breaking waves impose large hydrodynamic forces which may dislodge mussels and other organisms living on exposed rocky shores. We examined the effect of variation in attachment strength with size, habitat and season on ...