Year: 1996
Type: article
Abstract: Thc proccs\cs that gcncrate spatial patterns of organism\ rre often infened f|om analysis of the patterns themseh,es.To te\t the rulirbihr) of such irlirc.cc\.$c exanrined spatial patierrr\ of tree monality over l6 )er|s in a permanent l-hr study afea whefe c|uscsol modalit) arc rcaso ablywcllkno$n.Ihe area is an old-growrh stand in the Cascade \,lountains ofOfegon, dominated b}tl,l.,.r.J,lr,,i/i!(60c.ofstenlsbuton|'l2.'iofblsa|atea).A}ieJ2l,,.e/.a(52'?ofb.l\alarea),andPseu(1o|sug|ne.itsii\22./.ol bilal arca).\'{onalit,v !l as dominated b,v the two Arier specie\.D}ing,.l..rr.r,,/lr occupied b$er crDopy stftta and olien hrd bcen suppressed or drmrged by falling limbs of tfees.DlingA.2,?.ez occupied upper canop) slrrt,r and oflcn had becn atlacked by parhoge n s. t he po\ itions of dy i ng trees rncl causes of Dortrlit)-suggested thut dyirg A. .rrarilirshould bc ibu nd near canopy rrccs and !lra! d!ing,1.ttrr drd should be aggfegrted.These hypotheses \\'ere tested b) quadrat und distance based nethods.On r!crlgc.d,"-ing.,1.rl,rll'il/r were nol significantl,v closef to c.rnopr-tfees than e\pected fbf r fardorn distribution or closer than f|ndon sclcclion!ol lrcc\ lion thc entire population ofA.dndrili!.D) irrg ,.{. 1)/r.r.,rd $ere aggregated at a scale of.rbout20 nlr ho$e\,er.the dcgrcc ol aggrcgation $as nol significant cornpared with dre distr ibntion of the entire populatldr.The potential for krge l.rlling rrecs lo ![ikc olhcr trccs al somc distance irorr theirhaies.and the underl,ving non-random disiribution ofsome ree fopulalions.nra) linril lhc c\tcnt to $hich causes of lree monalit! can be infered from sprtial pattefns.
Language: English
Subfield: Global and Planetary Change
Field: Environmental Science
Domain: Physical Sciences
SDG: Life on land
Open Access status: green
Funder: Oregon State University
OpenAlex ID: W2286682180