ECOLOGY physiology and climate change

Animal Ecophysiology, Alfred-Wegener-Institute for Polar and Marine Research, 27515 Bremerhaven, Germany.
Science (Impact Factor: 33.61). 11/2008; 322(5902):690-2. DOI: 10.1126/science.1163156
Source: PubMed


Studies of physiological mechanisms are needed to predict climate effects on ecosystems at species and community levels.

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Available from: Hans-Otto Pörtner, Mar 05, 2015
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    • "Experimental approaches combining temperature with other environmental stressors (e.g. salinity for aquatic organisms) are highly significant for evaluating the effect of their interactions on organisms' responses, especially in the context of global warming (Pörtner & Farrell, 2008; Williams et al., 2008). Here we use a standard experimental approach to explore the physiological tolerance (lethal and sublethal responses) of saline water beetles to heat and osmotic stress, by measuring mortality and two common behavioural avoidance responses displayed by aquatic beetles (i.e. "

    • "In turn, it influences many other environmental parameters, e.g. solubility of gases and ions, and in-stream biological processes (Vannote and Sweeney, 1980; P€ ortner and Farrell, 2008). Altered thermal regimes promoted by anthropogenic activities, such as forestry practices (Johnson and Jones, 2000; Moore et al., 2005), urbanization (Paul and Meyer, 2001; Nelson and Palmer, 2007), damming (Kinouchi, 2007; Olden and Naiman, 2010), discharge from power plants and wastewaters (Durance and Ormerod, 2009; Olden and Naiman, 2010), water abstraction or diversion (Meier et al., 2003; Poff et al., 2010), present prominent and dynamic threats for a large number of watercourses. "

    Fungal Ecology 10/2015; DOI:10.1016/j.funeco.2015.09.011 · 2.93 Impact Factor
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    • "These populations may temporally use deeper, cooler habitats to reduce metabolic costs. Thermal preference may therefore influence species' distribution patterns in several ways through habitat selection (Pörtner and Farrell 2008; Gardiner et al. 2010) and modification to depth and/or latitude ranges (Perry et al. 2005; Grebmeier et al. 2006; Pörtner and Peck 2010). Temperature preference has been investigated in some temperate fish species (Fry 1947; Brett 1952; Kelsch and Neill 1990; Johnson and Kelsch 1998; Killen 2014), but no study to date has explored this trait in tropical coral reef fish species. "
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    ABSTRACT: As global temperatures increase, fish populations at low latitudes are thought to be at risk as they are adapted to narrow temperature ranges and live at temperatures close to their thermal tolerance limits. Behavioural movements, based on a preference for a specific temperature (T pref), may provide a strategy to cope with changing conditions. A temperature-sensitive coral reef cardinalfish (Cheilodipterus quinquelineatus) was exposed to 28 °C (average at collection site) or 32 °C (predicted end-of-century) for 6 weeks. T pref was determined using a shut-tlebox system, which allowed fish to behaviourally manipulate their thermal environment. Regardless of treatment temperature, fish preferred 29.5 ± 0.25 °C, approximating summer average temperatures in the wild. However, 32 °C fish moved more frequently to correct their thermal environment than 28 °C fish, and daytime movements were more frequent than night-time movements. Understanding temperature-mediated movements is imperative for predicting how ocean warming will influence coral reef species and distribution patterns.
    Coral Reefs 09/2015; DOI:10.1007/s00338-015-1353-4 · 3.32 Impact Factor
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