Scandinavia / en Canadian and European boreal forests differ but neither is immune to climate change, says 老司机直播 researcher /news/boreal-forest-research <span class="field field--name-title field--type-string field--label-hidden">Canadian and European boreal forests differ but neither is immune to climate change, says 老司机直播 researcher</span> <div class="field field--name-field-featured-picture field--type-image field--label-hidden field__item"> <img loading="eager" srcset="/sites/default/files/styles/news_banner_370/public/2016-11-08-borealforest.jpg?h=afdc3185&amp;itok=LM9O2d5g 370w, /sites/default/files/styles/news_banner_740/public/2016-11-08-borealforest.jpg?h=afdc3185&amp;itok=_1YmHpLA 740w, /sites/default/files/styles/news_banner_1110/public/2016-11-08-borealforest.jpg?h=afdc3185&amp;itok=YkCxR1zo 1110w" sizes="(min-width:1200px) 1110px, (max-width: 1199px) 80vw, (max-width: 767px) 90vw, (max-width: 575px) 95vw" width="740" height="494" src="/sites/default/files/styles/news_banner_370/public/2016-11-08-borealforest.jpg?h=afdc3185&amp;itok=LM9O2d5g" alt="Photo of Canada's Yukon"> </div> <span class="field field--name-uid field--type-entity-reference field--label-hidden"><span>ullahnor</span></span> <span class="field field--name-created field--type-created field--label-hidden"><time datetime="2016-11-11T15:38:13-05:00" title="Friday, November 11, 2016 - 15:38" class="datetime">Fri, 11/11/2016 - 15:38</time> </span> <div class="clearfix text-formatted field field--name-field-cutline-long field--type-text-long field--label-above"> <div class="field__label">Cutline</div> <div class="field__item">Boreal forest near Kluane Lake Research Station in Yukon (photo by Sophia Lavergne)</div> </div> <div class="field field--name-field-author-reporters field--type-entity-reference field--label-hidden field__items"> <div class="field__item"><a href="/news/authors-reporters/don-campbell" hreflang="en">Don Campbell</a></div> </div> <div class="field field--name-field-author-legacy field--type-string field--label-above"> <div class="field__label">Author legacy</div> <div class="field__item">Don Campbell</div> </div> <div class="field field--name-field-topic field--type-entity-reference field--label-above"> <div class="field__label">Topic</div> <div class="field__item"><a href="/news/topics/global-lens" hreflang="en">Global Lens</a></div> </div> <div class="field field--name-field-story-tags field--type-entity-reference field--label-hidden field__items"> <div class="field__item"><a href="/news/tags/forests" hreflang="en">Forests</a></div> <div class="field__item"><a href="/news/tags/u-t-scarborough" hreflang="en">老司机直播 Scarborough</a></div> <div class="field__item"><a href="/news/tags/canada" hreflang="en">Canada</a></div> <div class="field__item"><a href="/news/tags/scandinavia" hreflang="en">Scandinavia</a></div> </div> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><p><strong>Rudy Boonstra</strong> has been doing field research in Canada鈥檚 north for more than 40 years.</p> <p>Working mostly out of the Arctic Institute鈥檚 Kluane Lake Research Station in Yukon, the 老司机直播 Scarborough biology professor has become intimately familiar with Canada鈥檚 vast and unique boreal forest ecosystem.</p> <p>But it was during a trip to Finland in the mid-1990s to help a colleague with field research that he began to think long and hard about why the boreal forest there differed so dramatically from its Canadian cousin. This difference was crystallized by follow-up trips to Norway.</p> <p>鈥淪uperficially they look the same. Both are dominated by coniferous trees with similar low density deciduous trees like aspen. But that鈥檚 where the similarities end,鈥 he says. &nbsp;</p> <p>The real differences are most obvious on the ground, notes Boonstra. In Canada, the ground is dominated by tall shrubs like willow and birch but in the northwestern European forests found in Norway, Finland and Sweden the ground is dominated by dwarf shrubs like bilberry.</p> <p>鈥淭he reason for the difference comes down to different climates,鈥 he says.</p> <p>It also goes without saying that global warming will have an effect on vegetation and the species that rely on the boreal forest, adds Boonstra.</p> <p>鈥淭he data is still coming in but there are indications that this ecosystem is shifting and it could potentially be a massive shift,鈥 he says, pointing to changes in the global carbon cycle and the predator-prey dynamics.</p> <p>Boreal forest covers an incredible 50 per cent of Canada鈥檚 land mass and has evolved quite differently from the boreal forests of Northwestern Europe say Boonstra, who co-authored&nbsp;the book&nbsp;<a href="http://www.oupcanada.com/catalog/9780195133936.html">Ecosystem Dynamics of the Boreal Forest</a>.</p> <p>The winters in the Canadian boreal forest are drier and 15 to 20C colder, with snow that is soft and shallow. In Northwestern Europe the winter is more mild and wet by comparison with deep snow that packs harder. The milder European winters are driven mainly by westerly winds from North America that dip into the Caribbean and carry warm air across the Atlantic.</p> <p>The difference in climate means the plant and animal species in both forests have evolved along two very different paths. The Canadian system is dominated by the extreme cold tolerant tall shrubs and the 10-year snowshoe hare and Canadian lynx cycle.</p> <p>On the other hand, the forests in northwestern Europe are dominated by cold intolerant dwarf shrubs and a three to four-year cycle of small rodent and weasels that live below the snow. It also has a higher density of larger animals like Moose.</p> <p><img alt="head shot photo of Boonstra" class="media-image attr__typeof__foaf:Image img__fid__2430 img__view_mode__media_large attr__format__media_large" src="/sites/default/files/styles/large/public/Boonstra-1.jpg?itok=pAR0QCZ0" style="width: 339px; height: 453px; float: left; margin: 10px;" typeof="foaf:Image">鈥淧redators have evolved to the prey, and the prey have evolved to the vegetation in both places,鈥 adds Boonstra.</p> <p>Boonstra and his colleagues looked at a host of other potential factors to explain the differences between these forests including human activity, density of large mammals and other predators, but the deciding factor came down to climate.</p> <p>The research, which included collaboration from researchers across Canada and Norway, was published in the journal <em>BioScience</em> and received funding from the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Norwegian Science Council.</p> <p>Boreal forests are important ecological zones because they cover 11 per cent of the Earth鈥檚 total land surface and make up 25 per cent of the Earth鈥檚 closed canopy forests, which are continuous, uninterrupted forest systems.</p> <p>These forests play a key role in the global carbon cycle that allows the Earth to be capable of sustaining life.</p> <p>鈥淭here鈥檚 no question that a shift in snow consistency and temperature will impact this immense ecosystem,鈥 adds Boonstra.&nbsp; &nbsp;</p> <p>&nbsp;</p> </div> <div class="field field--name-field-news-home-page-banner field--type-boolean field--label-above"> <div class="field__label">News home page banner</div> <div class="field__item">Off</div> </div> Fri, 11 Nov 2016 20:38:13 +0000 ullahnor 102379 at