Physiology and Climate Change

Pörtner, Hans‐Otto; Farrell, Anthony P.

doi:10.1126/science.1163156

Cited by 1,998 publications

(1,713 citation statements)

References 22 publications

Supporting

Mentioning

1,644

Contrasting

Unclassified

Order By: Relevance

“…For others, especially cold-adapted stenotherms, increased physiological challenges may result in range contractions because warming waters affect the ability of poikilothermic organisms to cope with other stresses (Pörtner, 2010(Pörtner, , 2012. We know little about how these physiological responses will affect species interactions and, in turn, ecological function (e.g., Pörtner and Farrell, 2008;Pörtner and Peck, 2010). Changes in advection are likely to affect the rates and patterns of the poleward advance or retreat of fish populations, but are unlikely to halt the borealization of the Arctic.…”

Section: Resultsmentioning

confidence: 99%

Advection in polar and sub-polar environments: Impacts on high latitude marine ecosystems

Hunt

Drinkwater

Arrigo

et al. 2016

Progress in Oceanography

View full text Add to dashboard Cite

a b s t r a c tWe compare and contrast the ecological impacts of atmospheric and oceanic circulation patterns on polar and sub-polar marine ecosystems. Circulation patterns differ strikingly between the north and south. Meridional circulation in the north provides connections between the sub-Arctic and Arctic despite the presence of encircling continental landmasses, whereas annular circulation patterns in the south tend to isolate Antarctic surface waters from those in the north. These differences influence fundamental aspects of the polar ecosystems from the amount, thickness and duration of sea ice, to the types of organisms, and the ecology of zooplankton, fish, seabirds and marine mammals. Meridional flows in both the North Pacific and the North Atlantic oceans transport heat, nutrients, and plankton northward into the Chukchi Sea, the Barents Sea, and the seas off the west coast of Greenland. In the North Atlantic, the advected heat warms the waters of the southern Barents Sea and, with advected nutrients and plankton, supports immense biomasses of fish, seabirds and marine mammals. On the Pacific side of the Arctic, cold waters flowing northward across the northern Bering and Chukchi seas during winter and spring limit the ability of boreal fish species to take advantage of high seasonal production there. Southward flow of cold Arctic waters into sub-Arctic regions of the North Atlantic occurs mainly through Fram Strait with less through the Barents Sea and the Canadian Archipelago. In the Pacific, the transport of Arctic waters and plankton southward through Bering Strait is minimal.In the Southern Ocean, the Antarctic Circumpolar Current and its associated fronts are barriers to the southward dispersal of plankton and pelagic fishes from sub-Antarctic waters, with the consequent evolution of Antarctic zooplankton and fish species largely occurring in isolation from those to the north. The Antarctic Circumpolar Current also disperses biota throughout the Southern Ocean, and as a result, the biota tends to be similar within a given broad latitudinal band. South of the Southern Boundary of the ACC, there is a large-scale divergence that brings nutrient-rich water to the surface. This divergence, along with more localized upwelling regions and deep vertical convection in winter, generates elevated nutrient levels throughout the Antarctic at the end of austral winter. However, such elevated nutrient levels do not support elevated phytoplankton productivity through the entire Southern Ocean, as iron concentrations are rapidly removed to limiting levels by spring blooms in deep waters. However, coastal http://dx

show abstract

Section: Resultsmentioning

confidence: 99%

Advection in polar and sub-polar environments: Impacts on high latitude marine ecosystems

Hunt

Drinkwater

Arrigo

et al. 2016

Progress in Oceanography

View full text Add to dashboard Cite

show abstract

“…On the other hand, under limiting energy conditions, an increased metabolism is associated with a reduced scope for growth as demonstrated in sea urchin larvae exposed to ocean acidification conditions (Stumpp et al, 2011). We can also hypothesize that under extreme stress, larvae are unable to compensate for the environmental challenge through increased metabolism and experience metabolic depression (Pörtner and Farrell, 2008). In theory, different combinations of increased temperature and pH can then lead to different sublethal biological responses.…”

Section: Impact Of Ocean Acidification and Warming On Larval Growthmentioning

confidence: 99%

“…In seastar Meridiastra calcar larval growth rate decreased while temperature increased although there was not any effect from acidification treatment (Nguyen et al, 2012). Based on the theoretical framework developed by Pörtner and Farrell (2008) it was predicted that (i) response to ocean acidification is modulated by temperature and, (ii) ocean acidification can only drive negative response in animals. For example, it is predicted that warming can increase resilience to ocean acidification on the cold side of a species optimal temperature, but enhances sensitivity when a species experiences both drivers close to its upper limits of thermal tolerance.…”

Section: Impact Of Ocean Acidification and Warming On Larval Growthmentioning

confidence: 99%

“…Warming seemed to diminish the negative effect of acidification on Tripneustes gratilla larval growth (Sheppard Brennand et al, 2010). Pörtner and Farrell (2008) developed a theoretical framework to predict the combined impact of temperature and ocean acidification. All organisms live within a limited range of body temperatures, due to optimized structural and kinetic coordination of molecular, cellular, and systemic processes, and functional constraints result at temperature extremes.…”

Section: Introductionmentioning

confidence: 99%

“…The selected temperatures cover the upper part of today and near-future environmental variability. Based on Pörtner and Farrell (2008), we predicted an overall negative impact of pH on the tested parameters (fertilization, larval survival and developmental rate).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Temperature modulates the response of the thermophilous sea urchin Arbacia lixula early life stages to CO2-driven acidification

Gianguzza

Visconti

Gianguzza

et al. 2014

Marine Environmental Research

View full text Add to dashboard Cite

a b s t r a c tThe increasing abundances of the thermophilous black sea urchin Arbacia lixula in the Mediterranean Sea are attributed to the Western Mediterranean warming. However, few data are available on the potential impact of this warming on A. lixula in combination with other global stressors such as ocean acidification. The aim of this study is to investigate the interactive effects of increased temperature and of decreased pH on fertilization and early development of A. lixula. This was tested using a fully crossed design with four temperatures (20, 24, 26 and 27 C) and two pH levels (pH NBS 8.2 and 7.9). Temperature and pH had no significant effect on fertilization and larval survival (2d) for temperature <27 C. At 27 C, the fertilization success was very low (<1%) and all larvae died within 2d. Both temperature and pH had effects on the developmental dynamics. Temperature appeared to modulate the impact of decreasing pH on the % of larvae reaching the pluteus stage leading to a positive effect (faster growth compared to pH 8.2) of low pH at 20 C, a neutral effect at 24 C and a negative effect (slower growth) at 26 C. These results highlight the importance of considering a range of temperatures covering today and the future environmental variability in any experiment aiming at studying the impact of ocean acidification.

show abstract

Seasonal cycle of N:P:TA stoichiometry as a modulator of CO₂ buffering in eastern boundary upwelling systems

Gregor

Monteiro

2013

Geophysical Research Letters

View full text Add to dashboard Cite

In this study we use the southern Benguela upwelling system to investigate the role of nutrient and carbon stoichiometry on carbonate dynamics in eastern boundary upwelling systems. Six months in 2010 were sampled along a cross‐shelf transect. Data were classified into summer, autumn, and winter. Nitrate, phosphate, dissolved inorganic carbon, and total alkalinity ratios were used in a stoichiometric reconstruction model to determine the contribution of biogeochemical processes on a parcel of water as it upwelled. Deviations from the Redfield ratio were dominated by denitrification and sulfate reduction in the subsurface waters. The N:P ratio was lowest (7.2) during autumn once anoxic waters had formed. Total alkalinity (TA) generation by anaerobic remineralization decreased pCO2 by 227 μatm. Ventilation during summer and winter resulted in elevated N:P ratios (12.3). We propose that anaerobic production of TA has an important regional effect in mitigating naturally high CO2 and making upwelled waters less corrosive.

show abstract

Physiology and Climate Change

Cited by 1,998 publications

References 22 publications

Advection in polar and sub-polar environments: Impacts on high latitude marine ecosystems

Advection in polar and sub-polar environments: Impacts on high latitude marine ecosystems

Temperature modulates the response of the thermophilous sea urchin Arbacia lixula early life stages to CO2-driven acidification

Seasonal cycle of N:P:TA stoichiometry as a modulator of CO₂ buffering in eastern boundary upwelling systems

Contact Info

Product

Resources

About

Physiology and Climate Change

Cited by 1,998 publications

References 22 publications

Advection in polar and sub-polar environments: Impacts on high latitude marine ecosystems

Advection in polar and sub-polar environments: Impacts on high latitude marine ecosystems

Temperature modulates the response of the thermophilous sea urchin Arbacia lixula early life stages to CO2-driven acidification

Seasonal cycle of N:P:TA stoichiometry as a modulator of CO2 buffering in eastern boundary upwelling systems

Contact Info

Product

Resources

About

Seasonal cycle of N:P:TA stoichiometry as a modulator of CO₂ buffering in eastern boundary upwelling systems