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<br />'Allen Whitaker ~. ;. r r;l-rr'='~7r'ra.' ~s,; •,~,r; , _. ., ,; .•o,~;. - rf, y{cr:.?;
<br />'.'. ..,,. '.~, .~V ,y'''i.7:n:{':Jr ,. S•vr ~: ,jJL ,-.ily :, :.r- '. c~,,;:."~.
<br />-';D December 1981 `..'r!. t.•i~ .-- ,+/Cr.;;".'a..;', ; i:-,.;:,,,.:,,, ;1~iti
<br />S'. .n__"'n ..,_. ,:9nn+i:i_ii,. ~'.ra,'.ab.~.p .j;F:'~::.*i..~J?iL~i •u:rf.~it,.. .. .. ... ,.
<br />.z v~'~iY?M+ifi ,)',%'r~';~"'ra~ `~71h.~"-.~.;:r,_,t„V~'. 1 .,.~~:".i":,.: ~~r `-~~ ~' i. n ~ 1
<br />qq ,.bl ~'.; ~(i:A~i$' f 1,~ iK~ r~F' :ui }}..{;:',.8~~ .~G~,'a" i'~J;' s1~. xrd',( r, "..~;'~j•'~ri Y•.. •.~•d;I~'~nti e,.'s,:,.. i}5~7
<br />• iTi{ r.~ ~(I.Y ~,.~ :a.l'. ,,fl„ f, J!r'. ~- .-.I~MY ,, a,!';~.{~~.:.,. t''.:'..l.~n. Fi'e ~~' •~°-~i'E~
<br />- r?.1 :lv _: /f9~r r: -,;+ ...,. .r:. i, ..U ":ar.: t• •,'f~':r.:_e:r v. .. .~`. ~'~.~,i ~
<br />, : . i' .4{ 1t .' .' ~' ':,~. ~~,r. :. T,':'~;. '• SIt ~F:~';; ~':'. ~c~ 1~':;.. ~,.',::: a::.:-y a, ~:. r,"J.. ly,:: ~ ~,".
<br />i' *~1K'r~t'""'St~"`5+4if° r•~'~`/s' r ~, 'it' ,:j: r ,'.~~. ;}^:r.~~a~'ld.,=dh~
<br />y'" •,.,. ;',r ' ~7(•1975)'study.correctly:kidentified;the:majotaa e t4• u~~~•
<br />g ~!+~',•
<br />~'~~:•'n' -. tis grouse wintering areas 'in North Park. However, ;because ~•:
<br />_ ,.t,. ;,radio-telemetry was not used, Beck failed to•identify.`j~"'#'~x~
<br />~~1;;,;"ri;,~~,<.`~?r.;.,•;;.,,.,_~, :,Ehe importance.of certain' sagebrush' habitats .within `~';'•.rj,y~r},,.
<br />.p i \'l, f., at a.: .fir, ¢i:.:'Sit. } ~ ~ -i,. ., .. .. ~, .,~'
<br />L..,,r.kck,. ti•aS;,:.r,=',•' x~'ahe winter use areas. `.`T. Schoenberg's work has clearly.'„'~•"
<br />4~'1`~°~¢~,LTV;~~'~:ty~4~,~i•I~~...:~:;~'-i~t;;~~~;{~identified the importance"'of,the,`sagebrush types„'within;'
<br />.~t~1 t ~~ yi t4 , , ;the winter use•area• and the area to be impac to by min~igm
<br />K Jl'1Fa{1,i.l/lSyrli+llt~y "'T ~ ~i,~. :..~+' i.S` :' .: 1. ,,,`d.. l,. •~~,'.i Fi..,~l'^ y~y r' .+l,rr''rJ+t n.!r;~~~.~I S~~7,i:' !~'~'r~}~~:~~iN _1 v=
<br />ar ;.,s. J"Pages 7-IS We find the obviously biased review of literature con- ~
<br />~ ~ r .t r~.,.. r ,.
<br />~,~,t~~"~rl.•`~t~`~. "''~6'4;o.+s=f;cernin effects of nitrogen,fertilizer on sagebrusli+~-'~,~r,
<br />~~ +~"`~~K-;;~`'~ ~~-' ,1'•r'he3 hts. densit and;;cover•contributin little,to,'the.
<br />3 ~~3 ~Y4`rr~ .. '^7r: .f c.. .,, ..ricer.(/
<br />t~ ~:~,.C~•{~F,; (t.•:::!,~:•,p{debate:;on" the . ,.relat`ive good "or bad of nitrogen ferti-.`.
<br />l5 .. '~i. r...t ~ , 4c..: .. :y..
<br />~` ~d qF,tr~~y: +' 1!tyFy''S.~~#i~~tft~;aizerjs'The facE'that!-nitrogen fertilizer has'ari.~enoimous "~
<br />'''^" '+ 'f`~1!%$~`!~~'•;`-AC"`effect"'on yields•~of~"sa ebrush cannot~be reasonably ques^;''m~~
<br />1 f..,.
<br />~4tr~~" "_'`'"" "~•~%}M1~~.,~t~;~tioned.~';;Literature``citations'.su ortin ~this;are~~le ion.~~'
<br />3:; ~,,5.+`a t:~'ti:'il~."~? .:t y~w: :',::'.j>•,'.;.; ~:t''t;':. ... PP g g
<br />4
<br />,• y;11'tSia~; ;tu;',R~.,~;iti~.`+y;,q~1_tAIn fact, .the entire Artemisia genus has been termed.,,nitro-
<br />r.~J~~.,rl.'';~tiq;;-- tn1;.;J~;,~rp;~~o;;.„jif;.philic'!: because -of'dts response'to"supplemen[al•niErogen.;j
<br />µ2x~~it~~~,l~pf4rra!~.~r~~~~?:,rS!•r~15;.Much of this increase .in biomass (yield) .results from ,: _;a;,j}
<br />~,~ h°t i,tt,, ~ t* wider leaves, thicker, leaves, longer leaves, more leaves, `+'
<br />~~~ 1,^{', ~;~~N~r~~,''~,~``~r~~~~'~'?r ,elongated stems,'and ~elonRated- seed heads, "`All of'these4 j'~
<br />:A'F?'~ , k,A tt Jw4Md;l#, j,ry factors influence shrub,~height to';some extent'but`,research`~:
<br />}~~:.~~,~yY,r,•,~,r~~~~'~t'~"t1,i~r-,1'has shown that :thislres onse.,in•hei h ~ '~' 1 ~t~
<br />.. ~ ~~ ,Y, ~..~.:~ ::.::...........y,°:;': P g [..is not'significant.;~,::
<br />~r4*^~`i;', ~;t,,~,•~ <,H?~'cJi~t?~}~~;.;;~with the subspecies of Artemisia tridentata-'in`.North .Park:!
<br />~1~ ~Ylpratj~~!,~;~}~;.;r?fzj~ jbF'fi,However, this,~is, not surprising considering the lack_of
<br />t,s,.;,,.:•,,_,. ,~t,.,,,n.;,.,; variability in heights''of sagebrush 'in even-aged stands.'''''
<br />a''~'f~~+`}Sl''i~.~j'`fj*lr•'S'~ ~•~~:'~'~`=~Hei ht'`a ears:;to be"a'~ arame,ter not Basil 'altered. in',•,~ "'
<br />'~`~~~fi'.J•',t~li~t:~~i;4n~!~~!biggsagebrush plants.r'~~When one" considers methods em 1 ~~ed~l.
<br />• ry ~n ~ ~ 9 a{4i~'JfyA'r.~.. P Y.
<br />?(," ~'~"s'''•7`S~'(''~4~t>>,et.+ w-~:;~;..,in deEerminin shrub hei hts•this lack of res onsezis even'.`
<br />'.'R,r !~r~'7'.:C15'LiY. i~.)~[~'i!I'1 ~L'1~~•.."(~j~R" •..'. p' g .,. p. f,1 ~t,•..x.y,~,t~
<br />~.:'`1~/pp ' + fa\;'.., more understar.d~ble. '!=io'~ts of plants are almost always':, ,i
<br />t{Mj'f~!'i 1, ',kt(ti ~,'{:'; i.:4:~T1 `,'y~;'N..:7 ::. „
<br />'~>'' d F >~J '~( ' ~,f,taken from tfie ground to the .highest point.'"':The highest;~C~~;
<br />Y':~:f: -I"i.t ,r}o,try. 1': ;!..:^Y~.}`Fl,.'•;~,:C .., ,.7 .~.. ..; ,.a... .J'~.
<br />•~iA~7Un~~$~'•>p~;~~1~1j1,,(:~;fjj;t~~.;:iflthere~issonlbrlsseedaheadsthat exPendsa'above',theaplant
<br />~' +{"~ •:`-H 5'F "~ Y..,fv~`>5 r pit still is the hei ht recorded .° When fertilized there `~~~•'°
<br />' l., J tr. N. •Ji^;~,,gfj,^]t der e,Fy rt: ~. ,. K ....- .. ,.. .,
<br />4~jliyl~Rr''~,~{p,~rr~,ti7;,lXtis,~rr.r},O~a•~'p~will be•'a tremendous increase in number of~ seed heads`'~~"'~~.±°'
<br />~ but they will not exceed the height'of the seed heads~on
<br />.w'7 y1 ~ ;
<br />~I;~r~'1~ , t ir~> 1 +~ r; l 4 =~ .* the untreated plant and consequently a measure of height
<br />lM~arl l }r Y. ~~b' r `IJ u. does not tell you anything about the plant's response. t ~l
<br />'+~ r ' !'•:"Parameters such as densit and cover are also '~'~'J
<br />tr:rl~"•i-'.,;;:r,;..;,,,~:.4r'';.. ~ .. Y confusing. l,h.i
<br />' •;"; ~` ~•The have different meanings from ~study~ to study, and it~`'r"~aq
<br />~.Ir:.,.7=:~;!~;r:;-; fry'' ~;R. ;~' .
<br />'%~'r.r•'. , . .. ~.r;.:. ~. '' 'is important that these definitions be understood before;:.:."•t~?
<br />"~ :_ '`+'1'PiyS+'~-'='~~s''•~•`:: ~ : '.,the are discussed. ' The term "density" is a poor' term. ~:~(~~~7~
<br />~`'`.'•="~`+•`t4''``'~~y'% ''!' ~~''Its proper definition is number of stems per unit area. r"
<br />!i..p;;,,;}.tfS.,'.;t;u;,>,-"t:'.:...yj.r';,•;However, in many discussions the relative "thickness":of ~i~;~%
<br />. ••t .:. a
<br />°;:.~r-I,,,,wt.;:`•~• ~- " [he plant cover is referred to as density. ` In~the ` ~-;:~~';Y't'
<br />'r,`{ras(r~"":},,,~'•`f~,r}5i,^~.+:;~;+..,:_.r:~.research by Carpenter the term densit means number~tof .'~~~i
<br />`+~ i h+~..y~lhi ,Jt .. f,i
<br />1 1 /i.stems per unit area. It is not surprisin to us that r,~•
<br />'- ~ ,tC``i~~yl ,)' ,r`r 'densit of, sa e g .. .`;(;7o- s:
<br />•~.+~tr,.:,,,,,1,•.;~,.,gr!'~;;:.,:,:._-,:;;w Y g brush (number of stems) did not '.change;•.;f~%~~r;
<br />~'^-~"'~" ~ `~'; ~ in research re orted b Car enter 1976 S'' ~~'~`
<br />P Y P ( ):- We'beg to,::-'::y-.~o-,;
<br />!i.i4d;"~:. ~' .''~ ~~ °~ .• ~ ~'~differ with the statement on page 9 that [he Division'of !~~~;
<br />"f`rz.J!{?='%'~';;;''~;' r, csr:`a;i;`~;'}'Wildlife has consistently taken the position [hat ferti^
<br />+' ai V', ```}' ''-'4°rt:: f:e:.`s}" lization has a .positive influence on sagebrush densities' `'(~
<br />.f~Y:'L'Ra>•~rr<k.^`r'fr4~l~t.•~i.:il/,':';'n C~~N~:E r,':.:. sr~. fy .r,.`,. .;cT, ': :'\ +'
<br />T~:cd'.r~. .~9t:~ s, ,. ~Yi':~~flai._:•.~•.:..t..,';1`:c;; :'p w~. 4,'1yyr,'1,'.,'rdr~~•~
<br />:+r"~, „f~'.+..'i~y!~f.':f 1+t~~yt). K~ rry;:' 1• Y '1.' erg'. -U, -`,': ~.`i. i'. : ~'. • +r 'iJd, ~ fC.+~ila'J'•,.: :'ai }::,: n,',.
<br />, -y. ,Lr,In,F~, l.'r ,).: 'S.,u~AC'x41'CJ!.. .:,..: s wal%/.~ ~' ,-~"ik 4~•i i~.. ,~i-~.: ;o . •,y~:: ~. ~.'oi~. ~~'
<br />i-~tti:T,. :aln~~•}'. rti.-:.,r ..r.r..: l..: 'aC ','/,':.Li..t.. r, '.7. ::riy ., u_:i3 ,~4d_. .!'~.r!••~1.~••~.,3: i-qb^>;...
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