Create Thread-Fall-20\"X EAssignmentl 1-ClimateVaria MetL Resource Descripti + e
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Create Thread-Fall-20"X EAssignmentl 1-ClimateVaria MetL Resource Descripti + eale&requestType-uhread;&wurse; id-O7206,1&nav-group; Inum8 go up id- 221770 1&sur; l Weloome Indicates a required field. FORUM DESCRIPTION Course Information Syllabus & Schedule Q& A In December 2011, the summertime of Southem Hemisphere, a group of scientists arrived at the Palmer Station in Antarctica for a month-long research funded by the US National Scienoe Foundation lhe research team, cons st ng of bologists, prysicsts, and mathematicians, tollowed the very strict schedulend env ronmental stety guidelines in the sem-militery research station. I hey studied the behaviors of marine orgarisms such as pteropcds and krill withirn their rnatural habilats as well as in a fluid-low laboratory o site. The fellowina video is ariong their research outcomes The Swimming of Antarctica 'Sea-Butterflies' Duration: (2:51) User. na-Addad: 1173AM5 Course Moduks Metbd Ink Course Calendar eText Link (Optional) YouTube URL:l.owww.wulute. conriwcht SWI Watch Video pause tor a moment tha k about wy th scientists are anven to study these alien-looking creatures hen, watch the next wdeo Track Your Grades Calculale Fial Grade My Grades Sea Butterflies in Danger | NOVA Duration: 1:45) User.n'a Added: 5121 YouTube URL:tlle.owww.waulute.corde2 I511AREL watch ndea 1. Discuss in your pot tmportance of ploods and he sludy uf plcpods in te big picluie of global bicdiversily, coisilo expand your discussion to wy biodivcrsily mallers o humn survival and prosperily 2. Then, reply to one of your group members' post with constructive feedback. My Groups Grading Criteria: Advanced (AD): Express ng ndMdual thoughts and opinions with cntical thinking In one thread·AND replying at least to another person with thoughtul and constructrve comments or discussions Overthinking Discussion Forum 4 Group Discussion Board Group Homepape Competent (CP) Fxpresing individual thoights an pinions wih ntical thinking in one threa, not replying to others threads or only replhying with "l agree with yoL Nol Cumpelenl (NC).Only elalin clheteads (wilul deisrslaridiror ividual thinkinu)oronly roplyig wll agree wilh you. MESSAGE Jik Sae Draft to se a drafr of this nessnge. ick Submif to submit the past. ick Caneel to quit. Submit :30 PM 11/16/2017Explanation / Answer
Pteropods – or sea butterflies – are tiny sea snails which play a serious role in a range of ocean ecosystems. since of this critical role there is great alarm about the probable impact of inclusive change and predominantly ocean acidification on these organisms. Ocean acidification is likely to make the manufacture of calcium carbonate structures such as pteropod shells more challenging. Global warming is also expected to affect pteropod populations by modifying the geographical allocation of optimal species-specific temperatures.
Pteropods are of meticulous apprehension for the scientific locality as they have an outside shell that is conventional to be highly approachable to changes in ecological conditions. prominently, changes in pteropod profusion could have strong impact, as they play a critical role as a food source for fish, birds, whales and other zooplanktonic organisms. This position is primarily dangerous in high latitude oceans, where pteropods can stand for a large quantity of the diet of commercially important fish such as salmon. Their role in food chains at lower latitudes has received less attention, but a reduction in pteropod profusion in lower latitudes would also be likely to modify food webs.
In order to model the impact of ocean acidification and global warming on pteropods, risk indicator have been intended for chief pteropod species. These were designed for three particularly central species, in high latitudes, temperate waters and warm waters in that order. To generate the indicator, untried data on pteropod shell manufacture under ocean acidification scenario was mutual with models recitation chemical circumstances of the oceans at present, in 2030 and 2050, under both optimistic and pessimistic carbon dioxide release scenario projections. For pteropod shell manufacture, five risk levels were calculated.
Main results
Of particular concern is the high latitude pteropod Limacina helicina, which is found in both the Arctic Ocean and the Southern Ocean. These results substantiate a danger for this species. Under the pessimistic CO2 emissions scenario, it is likely that by 2050 the chemical setting of the water in most of the Arctic Ocean will limit the configuration of pteropod shells, connotation they will not be able to flourish in most of the Arctic Ocean. In totaling, the area in which environmental setting will suspend about optimal for Limacina helicina will also be abridged under global warming. With warming, it is likely that the most favorable ocean areas for high latitudes pteropods will agreement towards the poles, while ocean acidification is likely to push them in the direction of lower latitudes.
The temperate water species examine here (Limacina retroversa) will also very likely be affected by global change, with only 26% of the ocean on behalf of low risk for them by 2050. Warm water species almost certainly will not be as strongly affected by ocean acidification by 2050, but excessive temperatures will likely decrease their area of allocation, particularly in the equatorial Pacific.
Recommendations and future human survival
The progress of these indicators confirm the threat represent by global change for pteropods. Ocean acidification in particular represents a major threat for the bionetwork critical high latitudes pteropods. As ocean acidification is directly linked to carbon dioxide emission, only a strong decrease in emissions will limit the belongings of acidification on these organisms. The collision of failing pteropods is hard to enumerate at present, but it is likely that several ecosystems will be exaggerated with possible impacts for fisheries. In order to better charge these effects, further studies on both the crash of warming and ocean acidification on pteropods – structure on the imperfect number of empirical datasets used here – are dangerously needed.