{"product_id":"management-of-nutrition-in-forests-h-w-zzittl-9789401054348","title":"Management of Nutrition in Forests Under Stress: Proceedings of the International Symposium, Sponsored by the International Union of Forest Research O","description":"During the 1970s and 1980s, Sitka spruce (Picea sitchensis, Bong. Carr. ) was planted extensively on northern Vancouver Island (B. C., Canada) to regenerate slashburned clearcuts previously occupied by old-growth Thuja p1icata, Donn, Tsuga heterophy11a, Raf. Sarg., and an ericaceous unders tory shrub salal (Gaul ther ia sha11on, Pursh [CH sites 1 ) . The planted Sitka spruce grew well initially on these sites, but experienced nutritional stress and reduced growth 8 to 14 yr after planting (Germain, 1985; Weetman et a1., 1990a, b). Accompanying the onset of the nutritional stress was the reestablishment of a complete ground cover of salal, and it has been suggested that there is a causal connection between these two temporally synchronous events (Weetman et al., 1990a, b). Other ericaceous species have been implicated in nutritional stress in conifer plantations (Mallik, 1987; Robinson, 1972; Handley, 1963; Rose et a1., 1983). Three hypotheses to explain this nutritional stress were tested in the study reported in this paper: (1) that salal competition for N can provide an adequate explanation for the observed nutritional stress; (2) that salal inhibits the availability of nutrients to seedlings by interfering with their mycorrhizae; and (3) that the fertility of these CH sites declines after 8 yr following clearcutting and slashburning due to the termination of the flush of nutrients (or \"assart effect\") associated with this disturbance. A series of pot and field experiments was carried out to test these hypotheses. 1 2.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e H. W. Zöttl\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 9401054347\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9789401054348\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Springer\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 12\/16\/2012\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 676\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 2.10lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.21h x 6.14w x 1.39d","brand":"H. W. Zöttl","offers":[{"title":"Paperback","offer_id":48519898693887,"sku":"9789401054348","price":219.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_3d2783ee-b69b-4b29-8ccf-4703efedd33a.jpg?v=1778739496","url":"https:\/\/www.whiterainbookhouse.com\/products\/management-of-nutrition-in-forests-h-w-zzittl-9789401054348","provider":"WR Book House","version":"1.0","type":"link"}