Fiŝoj: Malsamoj inter versioj

[kontrolita revizio][kontrolita revizio]
Enhavo forigita Enhavo aldonita
Linio 168:
Troa fiŝkaptado estas unu el la plej gravaj minacoj al manĝeblaj fiŝoj kiel moruo kaj [[tinuso]].<ref>{{cite news |url=http://news.bbc.co.uk/1/hi/scotland/highlands_and_islands/6234881.stm |title=Call to halt cod 'over-fishing' |accessdate=18a de januaro 2006 |work=BBC News |date=5a de januaro 2007 |url-status=live |archiveurl=https://web.archive.org/web/20070117142906/http://news.bbc.co.uk/1/hi/scotland/highlands_and_islands/6234881.stm |archivedate=17a de januaro 2007 |df=dmy-all }}</ref><ref>{{cite news |url=http://news.bbc.co.uk/1/hi/world/asia-pacific/6301187.stm |title=Tuna groups tackle overfishing |accessdate=18a de januaro 2006 |work=BBC News |date=26 January 2007 |url-status=live |archiveurl=https://web.archive.org/web/20090121111204/http://news.bbc.co.uk/1/hi/world/asia-pacific/6301187.stm |archivedate=21a de januaro 2009 |df=dmy-all }}</ref> Troa fiŝkaptado finfine okazigas populacimalpliigon (populacifalon) ĉar la survivantoj ne povas produkti sufiĉe junulojn por anstataŭigi la forigitojn. Tia '''komerca formorto''' ne supozigas, ke la specio estas formortinta, sed nur le ĝi ne plu pvoas elteni fiŝkaptadon.
 
OneBone well-studiedstudita exampleekzemplo ofde fisherypopulacifalo collapseestas istiu thede la [[PacificPacifika sardinesardino]] ''Sadinops sagax caerulues'' fisheryfiŝkaptita offĉe thela Californiamarbordo coast.de FromKalifornio. aEkde 1937 peakpinto ofde {{convert|790000|LT}}ĝis the800,000 catchtunoj steadilykaptitaj declinedtuj tofalis onlyal {{convert|24000|LT}}nur in24,000 t en 1968, afterpost kio whichla thetiea fisheryfiŝkaptado wasne noplu longerestis economicallyekonomie viableeltenebla.<ref>{{harvnb|Helfman|Collette|Facey|1997|p=462}}</ref>
 
TheLa mainĉefa tensionkonflikto betweeninter la [[fisheriesfiŝkapta sciencescienco]] andkaj thela [[fishingfiŝkapta industryindustrio]] isestas thatke theambaŭ twogrupoj groupshavas havediferencajn differentvidpunktojn viewspri onla theadaptokapablo resiliencyde ofla fisheriesfiŝkaptejoj toal intensivela fishingintensiva fiŝkaptado. InEn placeslokoj suchkie as ScotlandSkotlando, Newfoundland,Novtero andkaj AlaskaAlasko thela [[commercialkomerca fishingfiŝkaptado|fishingfiŝkaptada industryindustrio]] is aestas majorgrava employerdunganto, sokaj governmentstiel arela predisposedregistaroj topretas supportsubteni itĝin.<ref>{{cite news |url=http://news.bbc.co.uk/1/hi/uk/6112352.stm |title=UK 'must shield fishing industry' |accessdate=1818a Januaryde januaro 2006 |work=BBC News |date=33a Novemberde novembro 2006 |url-status=live |archiveurl=https://web.archive.org/web/20061130055349/http://news.bbc.co.uk/1/hi/uk/6112352.stm |archivedate=3030a Novemberde novembro 2006 |df=dmy-all }}</ref><ref>{{cite news |url=http://news.bbc.co.uk/1/hi/world/europe/6197433.stm |title=EU fish quota deal hammered out |accessdate=1818a Januaryde januaro 2006 |work=BBC News |date=2121a de Decemberdecembro 2006 |url-status=live |archiveurl=https://web.archive.org/web/20061226234953/http://news.bbc.co.uk/1/hi/world/europe/6197433.stm |archivedate=2626a de Decemberdecembro 2006 |df=dmy-all }}</ref> On the other hand, scientists and conservationists push for stringent protection, warning that many stocks could be wiped out within fifty years.<ref>{{cite web |url=http://www.physorg.com/news81778444.html |title=Ocean study predicts the collapse of all seafood fisheries by 2050 |accessdate=13 January 2006 |url-status=live |archiveurl=https://web.archive.org/web/20070315014325/http://www.physorg.com/news81778444.html |archivedate=15 March 2007 |df=dmy-all }}</ref><ref>{{cite web |url=http://www.panda.org/about_wwf/where_we_work/europe/what_we_do/mediterranean/about/marine/bluefin_tuna/tuna_at_risk/index.cfm |title=Atlantic bluefin tuna could soon be commercially extinct |accessdate=18 January 2006 |archiveurl=https://web.archive.org/web/20070430205610/http://www.panda.org/about_wwf/where_we_work/europe/what_we_do/mediterranean/about/marine/bluefin_tuna/tuna_at_risk/index.cfm |archivedate=30 April 2007 |url-status=dead}}</ref>
 
===Habitat destruction===