KW - beneficial acclimation hypothesis

Uncertainty arises because the hypothesis focuses on the relative performance of organisms exposed to one environment versus another, whereas the raw material available to evolution is variation in acclimation responses of individual traits.

Testing the beneficial acclimation hypothesis - …

Abstract: The beneficial acclimation hypothesis (BAH) is controversial

The detrimental acclimation hypothesis (Letter to …

With coral reefs impacted by climate change, attention is turning to the extent to which scleractinian corals can acclimatize to new physical conditions. The implicit assumption that acclimatization is beneficial has not been tested for scleractinians, although it has been investigated in other systems and has been referred to as the beneficial acclimation hypothesis (BAH). This study tests this hypothesis for scleractinians in experiments on massive Porites spp. from Moorea, French Polynesia (17° 28.564S, 149° 49.018 W). Corals were acclimated for 15–21 days to three temperatures within the range experienced in the collection habitat and then transferred to each of the same temperatures for a treatment period of 14–15 days. The response of the holobiont was measured as growth, the response of the Symbiodinium populations as maximum photochemical efficiency of open reaction centers II (F v/F m). An ANOVA with polynomial contrasts was used to distinguish among the BAH, three alternative hypotheses and a null hypothesis describing the consequences of acclimation. In the first experiment (2009), massive Porites spp. were unresponsive to temperature. In the second experiment (2013), the BAH was not supported, but growth of the holobiont conformed to the “hotter is better” (HIB) hypothesis; the response of Symbiodinium populations conformed to developmental buffering. These results suggest that acclimation by massive Porites spp. to temperatures experienced routinely in the natural environment does not have clear beneficial value for growth or photochemical efficiency (i.e., BAH was not supported), but they reveal that acclimation to increased temperature can have value in responding to a variety of subsequent temperatures (i.e., support for HIB).

The detrimental acclimation hypothesis: Trends in …

Here, we tested the hypothesis that enhanced mitochondrial respiratory function is part of the acclimatory repertoire and that the 30-day regimen is required for protection via HACT.

Testing the beneficial acclimation hypothesis: temperature effects on mating success in a butterfly
Browse beneficial acclimation hypothesis pictures, photos, images, GIFs, and videos on Photobucket

hypothesis that photosynthetic acclimation ..

SYNOPSIS. Acclimation is a common phenotypic response to environmental change. Acclimation is often thought to enhance performance and thus to be adap-tive. This view has recently been formalized as the "Beneficial Acclimation Hy-pothesis " and predicts that individuals acclimated to one environment perform better in that environment than do individuals acclimated to a different environ-ment. Although Beneficial Acclimation is appealing and widely supported, recent studies with E. coli and Drosophila have challenged its general validity. Although these challenges could be dismissed as mere exceptions, they encourage a re-eval-uation of the adaptive significance of acclimation. Our philosophical approach dif-fers from that of most previous studies of acclimation, in which the prediction derived from a Beneficial Acclimation perspective (e.g., heat tolerance is positively correlated with acclimation temperature) is tested against the null hypothesis ("sin-gle hypothesis approach"). Instead, we follow Huey and Berrigan (1996) in advo-cating a strong inference approach (sensu Platt, 1964), which recognizes that Ben-eficial Acclimation is actually one of a set of competing hypotheses that make

07/05/2007 · Based on the beneficial acclimation hypothesis, ..

Homo sapiens sapiens, the true, modern human. - Ecotao

An ANOVA with polynomial contrasts was used to distinguish among the BAH, three alternative hypotheses and a null hypothesis describing the consequences of acclimation.

This is an expected outcome of short-term plasticity and of the beneficial acclimation hypothesis

UFO occupants - Reptilian and grey alien pictures

The implicit assumption that acclimatization is beneficial has not been tested for scleractinians, although it has been investigated in other systems and has been referred to as the beneficial acclimation hypothesis (BAH).