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| 03661nam 2200445zi 4500 |
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| 001 | 9.889785 |
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| 003 | CaOODSP |
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| 005 | 20221107172408 |
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| 006 | m o d f |
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| 007 | cr mn||||||||| |
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| 008 | 200727t20212021mbcab ob f000 0 eng d |
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| 020 | |a9780660356471 |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 041 | 0 |aeng|beng|bfre |
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| 043 | |ar------|an-cn-nt|an-cn-yk |
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| 045 | |ax7y1 |
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| 086 | 1 |aFs97-13/1313E-PDF |
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| 100 | 1 |aHoover, C. A. |q(Carie A.)|eauthor. |
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| 245 | 10|aCanadian Beaufort Sea Shelf food web structure and changes from 1970-2012 / |cby Carie Hoover, Wojciech Walkusz, Shannon MacPhee, Andrea Niemi, Andrew Majewski, and Lisa Loseto. |
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| 264 | 1|aWinnipeg, MB : |bCentral and Arctic Region, Fisheries and Oceans Canada, |c2021. |
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| 264 | 4|c©2021 |
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| 300 | |a1 online resource (viii, 97 pages) : |billustrations (some colour), colour map. |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 490 | 1 |aCanadian data report of fisheries and aquatic sciences, |x1488-5395 ; |v1313 |
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| 504 | |aIncludes bibliographical references (pages 66-85). |
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| 520 | 3 |a"In order to better understand the structure of the Canadian Beaufort Sea Shelf marine ecosystem and potential impacts of multiple stressors, an Ecopath with Ecosim food web model was created. Construction of the food web model was achieved by linking predators and prey through trophic interactions to identify the structure of the ecosystem and changes over time. The Ecopath (static) portion of the model contains 33 functional groups ranging from primary producers and detritus to whales and was set to the year 1970 to represent a past, stable ecosystem structure. The Ecopath model synthesizes existing data for the ecosystem, in addition to estimating unknown parameters such as conservative estimates of fish biomass in the system based on predator's dietary needs and ecosystem productivity. In addition, harvest mortality for all harvested fish and mammals within the model are identified and summarized. Changes to the ecosystem driven by reductions in sea ice and increases in sea surface temperature are considered large compared to harvest mortality impacts. While changes to individual species or species groups range (from -20% to +135% of starting biomass) over the 1970-2012 temporal simulation, total ecosystem biomass increases (~30%) over the historical simulation, with ecosystem trophic level remaining stable (<1% change)"--Abstract, page vii. |
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| 546 | |aIncludes abstracts in English and French. |
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| 650 | 0|aFood chains (Ecology)|zBeaufort Sea|xMathematical models. |
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| 650 | 0|aFood chains (Ecology)|zInuvialuit Settlement Region (N.W.T. and Yukon)|xMathematical models. |
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| 650 | 0|aMarine ecology|zBeaufort Sea|xMathematical models. |
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| 650 | 0|aMarine ecology|zInuvialuit Settlement Region (N.W.T. and Yukon)|xMathematical models. |
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| 650 | 6|aChaînes alimentaires (Écologie)|zBeaufort, Mer de|xModèles mathématiques. |
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| 650 | 6|aChaînes alimentaires (Écologie)|zInuvialuit (T.N.-O. et Yukon : Région)|xModèles mathématiques. |
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| 650 | 6|aÉcosystèmes marins|zBeaufort, Mer de|xModèles mathématiques. |
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| 650 | 6|aÉcosystèmes marins|zInuvialuit (T.N.-O. et Yukon : Région)|xModèles mathématiques. |
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| 710 | 1 |aCanada. |bDepartment of Fisheries and Oceans. |bCentral and Arctic Region, |eissuing body. |
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| 830 | #0|aCanadian data report of fisheries and aquatic sciences ;|v1313.|w(CaOODSP)9.505124 |
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| 856 | 40|qPDF|s2.00 MB|uhttps://publications.gc.ca/collections/collection_2021/mpo-dfo/Fs97-13-1313-eng.pdf |
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