Consulta: creatorFacets:"Mcquaid, Christopher D."
Registros recuperados: 7
Data/hora: 05/06/2024 01:12:35

Long-term, high frequency in situ measurements of intertidal mussel bed temperatures using biomimetic sensors
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Helmuth, Brian; Choi, Francis; Matzelle, Allison; Torossian, Jessica L.; Morello, Scott L.; Mislan, K. A. S.; Yamane, Lauren; Strickland, Denise; Szathmary, P. Lauren; Gilman, Sarah E.; Tockstein, Alyson; Hilbish, Thomas J.; Burrows, Michael T.; Power, Anne Marie; Gosling, Elizabeth; Mieszkowska, Nova; Harley, Christopher D. G.; Nishizaki, Michael; Carrington, Emily; Menge, Bruce; Petes, Laura; Foley, Melissa M.; Johnson, Angela; Poole, Megan; Noble, Mae M.; Richmond, Erin L.; Robart, Matt; Robinson, Jonathan; Sapp, Jerod; Sones, Jackie; Broitman, Bernardo R.; Denny, Mark W.; Mach, Katharine J.; Miller, Luke P.; O'Donnell, Michael; Ross, Philip; Hofmann, Gretchen E.; Zippay, Mackenzie; Blanchette, Carol; Macfarlan, J. A.; Carpizo-ituarte, Eugenio; Ruttenberg, Benjamin; Pena Mejia, Carlos E.; Mcquaid, Christopher D.; Lathlean, Justin; Monaco, Cristian; Nicastro, Katy R.; Zardi, Gerardo.
At a proximal level, the physiological impacts of global climate change on ectothermic organisms are manifest as changes in body temperatures. Especially for plants and animals exposed to direct solar radiation, body temperatures can be substantially different from air temperatures. We deployed biomimetic sensors that approximate the thermal characteristics of intertidal mussels at 71 sites worldwide, from 1998-present. Loggers recorded temperatures at 10-30 min intervals nearly continuously at multiple intertidal elevations. Comparisons against direct measurements of mussel tissue temperature indicated errors of similar to 2.0-2.5 degrees C, during daily fluctuations that often exceeded 15 degrees-20 degrees C. Geographic patterns in thermal stress based...
Tipo: Text
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00605/71693/70134.pdf

Applicability of Dynamic Energy Budget (DEB) models across steep environmental gradients
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Monaco, Cristian; Mcquaid, Christopher D.
Robust ecological forecasting requires accurate predictions of physiological responses to environmental drivers. Energy budget models facilitate this by mechanistically linking biology to abiotic drivers, but are usually ground-truthed under relatively stable physical conditions, omitting temporal/spatial environmental variability. Dynamic Energy Budget (DEB) theory is a powerful framework capable of linking individual fitness to environmental drivers and we tested its ability to accommodate variability by examining model predictions across the rocky shore, a steep ecotone characterized by wide fluctuations in temperature and food availability. We parameterized DEB models for co-existing mid/high-shore (Mytilus galloprovincialis) and mid/low-shore (Perna...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00605/71690/70130.pdf

Biogeographical Patterns of Endolithic Infestation in an Invasive and an Indigenous Intertidal Marine Ecosystem Engineer
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Ndhlovu, Aldwin; Mcquaid, Christopher D.; Nicastro, Katy; Marquet, Nathalie; Gektidis, Marcos; Monaco, Cristian; Zardi, Gerardo.
By altering the phenotypic properties of their hosts, endolithic parasites can modulate the engineering processes of marine ecosystem engineers. Here, we assessed the biogeographical patterns of species assemblages, prevalence and impact of endolithic parasitism in two mussel species that act as important ecosystem engineers in the southern African intertidal habitat, Perna perna and Mytilus galloprovincialis. We conducted large-scale surveys across three biogeographic regions along the South African coast: the subtropical east coast, dominated by the indigenous mussel, P. perna, the warm temperate south coast, where this species coexists with the invasive Mediterranean mussel, M. galloprovincialis, and the cool temperate west coast dominated by M....
Tipo: Text
Palavras-chave: Biogeographical region; Mytilus galloprovincialis; Perna perna; Rocky shores; Parasite.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00605/71689/70129.pdf

First oceanographic survey of the entire continental shelf adjacent to the northern Agulhas Current
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lutjeharms, Johann; Durgadoo, Jonathan V.; Schapira, Mathilde; Mcquaid, Christopher D.
Tipo: Text
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00174/28534/26917.pdf

Influence of respiratory mode on the thermal tolerance of intertidal limpets
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Kankondi, Sebbi L.; Mcquaid, Christopher D.; Tagliarolo, Morgana.
Predicting ecological responses to climate change requires an understanding of the mechanisms that influence species' tolerances to temperature. Based on the idea that air and water breathing animals are differentially suited to life in either medium due to differences in their respiratory morphology, we examined the possibility that the thermal tolerances of coexisting intertidal pulmonate and patellogastropod limpets may differ in different breathing media. We tested this by determining each species' median lethal temperature (LT50) and cardiac Arrhenius breakpoint temperature (ABT) as measures of upper thermal tolerance limits, in air and water. Although all these species can survive in air and water, we hypothesised that the pulmonate limpets,...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00454/56602/58263.pdf

Free-living and particle-associated prokaryote metabolism in giant kelp forests: Implications for carbon flux in a sub-Antarctic coastal area
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Schapira, Mathilde; Mcquaid, Christopher D.; Froneman, Pierre W.
Extensive beds of large subtidal kelps are characteristic of many temperate and subpolar coastlines. They provide habitats for a wide range of other species and are sites of high primary production that generate large quantities of water-borne particles and dissolved organic compounds that support distinctive communities of prokaryotes. We measured prokaryotic metabolism along transects from the shore to the outside of three giant kelp forests (Macrocystis pyrifera) located in the shelf waters of the Prince Edward Islands (Southern Ocean). Abundance, heterotrophic production (PHP), respiration rates (R-ETS) and growth efficiencies (PGE) were investigated within the particle-associated (PA) and the free-living (FL) communities. Temperature, salinity and...
Tipo: Text
Palavras-chave: Prokaryotes; Free-living; Particle-associated; Growth efficiency; Kelp; Sub-Antarctic island.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00088/19939/17760.pdf

Predicting the performance of cosmopolitan species: dynamic energy budget model skill drops across large spatial scales
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Monaco, Cristian; Porporato, Erika M. D.; Lathlean, Justin A.; Tagliarolo, Morgana; Sara, Gianluca; Mcquaid, Christopher D.
Individual-based models are increasingly used by marine ecologists to predict species responses to environmental change on a mechanistic basis. Dynamic Energy Budget (DEB) models allow the simulation of physiological processes (maintenance, growth, reproduction) in response to variability in environmental drivers. High levels of computational capacity and remote-sensing technologies provide an opportunity to apply existing DEB models across global spatial scales. To do so, however, we must first test the assumption of stationarity, i.e., that parameter values estimated for populations in one location/time are valid for populations elsewhere. Using a validated DEB model parameterized for the cosmopolitan intertidal mussel Mytilus galloprovincialis, we ran...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00475/58679/61303.pdf