City Trees

November/December 2014

City Trees is a premier publication focused on urban + community forestry. In each issue, you’ll learn how to best manage the trees in your community and more!

Issue link: http://read.dmtmag.com/i/417159

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ÌÞÊ/Àiià )NTRODUCTION ,AST WINTER THE 5+ EXPERIENCED THE WETTEST WINTER EVER RECORDED WITH FLOODING WIDESPREAD ACROSS MANY PARTS OF SOUTHERN %NGLAND #ONSEQUENTLY MILLIONS OF TREES FACED PROLONGED PERIODS OF WATERLOGGING STRESS 4HE 5+S %NVIRONMENTAL !GENCY WAS QUICK TO POINT OUT THAT SOILS REMAIN FULLY SATURATED FOR UP TO TWO MONTHS EVEN WHEN THE RAIN STOPS AND THE FLOOD WATERS SLOWLY DRAIN 7HILST ALL TREES HAVE EVOLVED TO TOLERATE SOME DEGREE OF WATERLOGGING THE EXTENSIVE FLOODING LAST WINTER UNDOUBT EDLY NEGATIVELY IMPACTED TREE HEALTH AND POTENTIALLY LEFT TREES AT A GREATER RISK OF DISEASE ATTACK AND BY DEFAULT WINDTHROW 0ROBLEMS #AUSED BY 7ATERLOGGING 7HILST IT MAY APPEAR TO BE A RELATIVELY SIMPLE PROBLEM AT FIRST WATERLOGGING STRESS IS ACTUALLY A SERIES OF SIG NIFICANT EVENTS AND PROCESSES THE SEVERITY OF WHICH 7>ÌiÀ]Ê7>ÌiÀÊÛiÀÞÜiÀi\ 0HYSIOLOGICAL )MPACTS OF &LOODING ON 4REES 4UPSZBOE1IPUPTCZ-VLF)BJMFZ3FTFBSDI5FDIOJDJBOBOE1MBOU&DPMPHJTUBOE(MZOO1FSDJWBM)FBEPG3FTFBSDI#BSUMFUU5SFF 3FTFBSDI-BCPSBUPSZBUUIF6OJWFSTJUZPG3FBEJOH6OJUFE,JOHEPN 4HIS ARTICLE IS ADAPTED FROM ONE THAT APPEARED IN THE SUMMER EDITION OF !XE TO 'RIND THE QUARTERLY MAGAZINE OF THE -UNICIPAL 4REE /FFICERS !SSOCIATION -4/! WHICH IS BASED IN 7EST -IDLANDS 5+ WWW MTOACOUK 9OU CAN SEE THE MOST RECENT EDITION OF !XE HERE HTTPISSUUCOMMACTHETREEDOCS AXE??AUTUMN? >ÃÌÊÜÌiÀÊÜ>ÃÊÌiÊ1½ÃÊÜiÌÌiÃÌÊÜÌiÀÊiÛiÀÊÀiVÀ`i`]ÊÜÌÊv`}ÊÜ`iëÀi>`Ê>VÀÃÃÊ>ÞÊ«>ÀÌÃÊvÊÃÕÌiÀÊ}>`°

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