|
J
<br />Conceptual Models and Nypotheses
<br />for the Trinity River Restoration Program
<br />Table 6.2a. Aggregate hypothesis statements describing the conceptual modcl of bank rehabilitarion effects on
<br />fledgling success and survival for riparian b'uds. Linkage numbers refer to those illustrated in the
<br />hypothesis diagram (Figure 6.2) and described in ?'able 6.1. Bolded hypotheses (i.e., Hypotheses
<br />1, 6 and 7) aze those considered to be both important and tughly feasible to evaluate.
<br />Links Nypothesis Perfunnance M(asures Class
<br />
<br />Nest success (H1) ., _ --- -- -- - -- -
<br />Rernoval of 50SS of nparian hal,itat at bank • -
<br />1) - - , - -
<br />Number of juveniles and ratio cf jutitnilcs fo' ;-
<br />1,19111t
<br />
<br />Link?y?s: 1, 7 5b
<br />,' rc?habilitr,ticn sites will iediice the total ?
<br />; dults incasuic?d at b.:ni'ing st3lionsL:; ?
<br />nutnbcr of brc cding adullS and juvenilcs. G, ia, ic, 8a, £r., 9, 2) F.,cst <ucccss cvaluated using rcproductivc inclex F
<br />`
<br />16, 12?1-1. 14b
<br />, . . ' .. . . . .. .fdfl}If1g S."_ty?
<br />? , !j'_-4
<br />?
<br />'
<br />? ,
<br /> , 3) , .•
<br />Number of adults and nurnbet o( brceding?dults ?
<br />
<br />?...? ..bL,l. __ ._...:
<br />.. ... :1.....?..u_. ... ._:?__......r._...«
<br />...
<br />_ ...>.. . . ._... .._.?:?w.? rw
<br />_ _?.??
<br />(r?.!i Mgmt
<br />linkages: 7a, 7c, increase nsk of nest predation. to cjaui; ratio.
<br />10 21 Increzsed rate o( predation o( observed nests.
<br />Nest success (1-14) Replanting, channel and pond development, 1) Fledging rale: inaeased juvenile/aduft ratio from Mgmt
<br />Linkages: 2, 3, Sa and riparian initiation increases vegetation demographic study.
<br />cover, plant species diversity, and tood 2) Nest success evaluated usinq reproductive index
<br />availability and will increase nesl success r;;nkings.
<br />MwTrmR?? ?!ti.-w na+w .. F*"Y.w?';:'??+?' rey mC7
<br />ry1Vd{?ft ?? .• .' -. C?t fl JiiS Ijte ?!CsIlIi Of Ufl Ifl f'i. 5hll a .•.. 1) r f.-.:? ?Uf 'b11n08f1LC''.ffCnl(r Iflt (nl1111S,
<br />?'7; Ili ?•y Ifl ?E '?E+ ?d! 'i 3f0( it Uf'? iflC ? f10i 1??) f II?( S,?
<br />'?I'1F r)i Cyy?
<br />r It ? ?. c I! Il ?? Uf I'f Cf5 lUY:,fIIl(S '1,J " r{
<br />f -<ra+.
<br />,73. !L? _ ? , y •? ? 11, l, f?? ?('[1 ? J?c?l(ifl fi I? t?? fl t l"3? s ? ,
<br />?.:+ t+? -' ,-... ??, y} f( <i ? . r,' • - i i :,. -
<br />r?? q .-.-;k
<br />th'.?tti:?.•_?..iw:._.? :?._._an?_:air?l,_..z.tis?uu?YisaS?a:....?.::.c.?_ ?.,s?--? -t??i??u'ti.?f±?:.r?`PsS^
<br />Survival (H6) Habitat chanyes following bank 1) Number of juveniles and ratio of juvcniles to Mgmt,
<br />Linkages:l, 2, 3, rehabilitation construction and riparian adufts measured at banding stations Natural
<br />5a, 5c, 6, 8, 9, 13 initiatlon will increase food resulting In y) Nest success evaluated using reproductive index
<br />(latet eHect than increased total number of breeding adults rankinga
<br />H1) and juvenflea.
<br />3) Number of adults and number of breeding adufts.
<br />.:_.. . . ,
<br />,
<br />? SLIfVI\'8I tN'? . H3I)It3t Cll?illy[5 fUIIp4?ring hank 1) Species cr.niposition (number of pecies ind: hlqnit;?t
<br />T ' rchabilitation coristruction and iiparisn , ; 7 . divcisity indicc5). Nafural?
<br />, Linkaycs: same ,, , . _ . ..,
<br />as H6 (but latcr i??itiation ?vill incrcasc plant and food.
<br />. (ifect Ihan fi6), cliversity iesultiny in a diverse bird ? .-
<br />. „ . cornmin;ity. .
<br />?Lir.?
<br />91
|