I think in the colder regions the difference in changes of the temperature is more than in warmer regions.

Usually tropical organism are used (or need) high temperatures and so are their foodstock (vegetal or animal), so climate change won't have a high impact on most of them (but some of them will need to move to more temperate area to survive)

in comparison, temperate species are use to temperate climate and can't really handle high temperature, so most of them will need to move to new temperate area to follow their foodstock and to avoid, high temperature effect

For birds at least there is increasing evidence against this idea. Have a look at some of the work by Çağan H Şekercioğlu.

Actually I would have say that tropical organisms would be more impacted by climate change, according to the litterature on it. See Araujo et al., 2013, they say that equatorial and tropical species have an upper thermal tolerance very close to the maximal temperatures in the environment. And these species can not increase this thresholdtoo much.

Here is a link for a paper you might find useful:

http://bioweb.biology.utah.edu/sekercioglu/PDFs/Sekercioglu%202012%20BiolConserv_The%20effects%20of%20climate%20change.pdf

It talks about how tropical birds have lower basal metabolic rates, and are less likely to have the phenotypic flexibility necessary to adapt to climate change.

In marine animals I understand that the tolerance limits of species living in warm waters are very close to temperature observations in the wild, and therefore this species would have less ability to increase their tolerances. Yo can have a look at Somero 2010 (The Journal of Experimental Biology 213, 912-920), which explains differences in latitudinal distribution of animals and thermal tolerance, and how adaptation will play a fundamental role in determining which species live or go extinct.

http://www.fao.org/3/a-i0670e/i0670e05.pdf

http://www.lincoln.ac.nz/PageFiles/6750/WeatherLitReview.pdf

Article Impacts of Climate Change on Marine Organisms and Ecosystems

http://ec.europa.eu/environment/forests/pdf/EU_Forests_annex1.pdf

http://www.ifaw.org/sites/default/files/education-publications/us/us-aae-climate-change-series-intro-life-on-earth.pdf

http://www.cgd.ucar.edu/staff/trenbert/books/ChangingClimate.pdf

http://www.who.int/globalchange/publications/climatechangechap6.pdf