본문

서브메뉴

Indirect Effects of Invasive Shrubs on Small Mammal Seed Predation and Activity
Indirect Effects of Invasive Shrubs on Small Mammal Seed Predation and Activity
Indirect Effects of Invasive Shrubs on Small Mammal Seed Predation and Activity

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202104654
ISBN  
9798280771901
DDC  
574.5
저자명  
Fuka, Mark E.
서명/저자  
Indirect Effects of Invasive Shrubs on Small Mammal Seed Predation and Activity
발행사항  
[Sl] : The University of Wisconsin - Madison, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
151 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
주기사항  
Advisor: Orrock, John L.
학위논문주기  
Thesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
초록/해제  
요약Seeds play a fundamental role in plant recruitment and dispersal, and therefore, the survival, persistence, expansion, and extinction of plant populations may depend upon the fate of seeds. As such, animals that consume seeds have demonstrated the ability to modify plant communities across ecosystems. In temperate woodlands, although native trees provide crucial wildlife habitat and valuable ecosystem services, maintaining these systems hinges upon successful tree recruitment and establishment, which may be hindered by the activity of granivorous rodents. Moreover, the spread of non-native invasive woody shrubs throughout North America can modify understory structure in ways that can further exacerbate rodent activity and seed predation. Therefore, understanding how spatial and temporal aspects of habitat structure and local environmental conditions may interact to affect seed-eating animals and lead to changes in seed consumption and dispersal is vital to promoting successful restoration of temperate forests.The role of temporal variation in seed fate may be relevant in light of biological invasions, as widespread invasive woody shrubs (i.e., common buckthorn [Rhamnus cathartica]) are known to affect seed fate and are also known to exhibit leafing phenology that is different from native shrubs and could cause changes in seed predation by rodents (e.g., white-footed mice [Peromyscus leucopus]). By conducting an experiment that coupled an invasive shrub manipulation with a seasonal seed removal study, I found that both native tree seeds and R. cathartica seeds were at the greatest risk of consumption in habitats invaded by invasive shrubs regardless of the time of year. These findings help reveal the optimal window for seed survival for seed addition restoration projects following the removal of invasive shrubs by identifying both winter and spring as key times of year that seeds may be most likely to escape predation. In another experiment that used a large-scale invasive shrub manipulation across a rural-to-urban forest gradient spanning multiple seasons, I found that sites in highly urban environments had both high levels of eastern grey squirrel activity (Sciurus carolinensis) and high levels of oak acorn loss. Additionally, elevated P. leucopus activity during autumn in R. cathartica removal plots indicated the strength of resource pulses provided by seed depots. Together, the findings from these two experiments demonstrate seasonal variation in small mammal granivory and illustrate the spatial and temporal scale of seed loss linked to variability in local environmental conditions. Because the effectiveness of seed addition may be particularly reduced as forests become increasingly invaded by exotic woody shrubs that can amplify small mammal granivory, there is a growing need to develop novel, effective restoration practices focused on promoting native tree seed survival for maintaining sustainable forest regeneration. I explored a novel method of protecting seeds from granivory by conducting an experiment using capsaicin-extract coated black cherry (Prunus serotina) seeds. I found that the removal of invasive shrubs, not capsaicin coatings, reduced seed loss. During the course of the 5-month sampling period, I also found a significant reduction in the remaining capsaicin concentration found on seeds, indicating a need for longer-lasting coating techniques. In another experiment that measured both the rate of seed loss and fate of capsaicin coated red oak (Quercus rubra) acorns, I found that applying capsaicin on seed coats deterred rodent granivory, and that this deterrence was strengthened by the removal of invasive shrubs. Additionally, I observed no differences in dispersal distance between capsaicin and control acorns, indicating that capsaicin may be used to both deter granivores without hindering dispersal of Q. rubra. Together, these experiments reinforce the utility of invasive shrub removal as an effective restoration strategy as well as provide support for the use of chemical seed coatings to deter granivorous rodents.
일반주제명  
Ecology
일반주제명  
Plant sciences
일반주제명  
Wildlife management
일반주제명  
Animal sciences
키워드  
Invasive shrubs
키워드  
Rhamnus cathartica
키워드  
Seed predation
키워드  
Small mammals
키워드  
Peromyscus leucopus
기타저자  
The University of Wisconsin - Madison Integrative Biology
기본자료저록  
Dissertations Abstracts International. 86-12B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2025        us                              c    eng  d
■001000017358387
■00520260202104654
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798280771901
■035    ▼a(MiAaPQ)AAI32115635
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a574.5
■1001  ▼aFuka,  Mark  E.
■24510▼aIndirect  Effects  of  Invasive  Shrubs  on  Small  Mammal  Seed  Predation  and  Activity
■260    ▼a[Sl]▼bThe  University  of  Wisconsin  -  Madison▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a151  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-12,  Section:  B.
■500    ▼aAdvisor:  Orrock,  John  L.
■5021  ▼aThesis  (Ph.D.)--The  University  of  Wisconsin  -  Madison,  2025.
■520    ▼aSeeds  play  a  fundamental  role  in  plant  recruitment  and  dispersal,  and  therefore,  the  survival,  persistence,  expansion,  and  extinction  of  plant  populations  may  depend  upon  the  fate  of  seeds.  As  such,  animals  that  consume  seeds  have  demonstrated  the  ability  to  modify  plant  communities  across  ecosystems.  In  temperate  woodlands,  although  native  trees  provide  crucial  wildlife  habitat  and  valuable  ecosystem  services,  maintaining  these  systems  hinges  upon  successful  tree  recruitment  and  establishment,  which  may  be  hindered  by  the  activity  of  granivorous  rodents.  Moreover,  the  spread  of  non-native  invasive  woody  shrubs  throughout  North  America  can  modify  understory  structure  in  ways  that  can  further  exacerbate  rodent  activity  and  seed  predation.  Therefore,  understanding  how  spatial  and  temporal  aspects  of  habitat  structure  and  local  environmental  conditions  may  interact  to  affect  seed-eating  animals  and  lead  to  changes  in  seed  consumption  and  dispersal  is  vital  to  promoting  successful  restoration  of  temperate  forests.The  role  of  temporal  variation  in  seed  fate  may  be  relevant  in  light  of  biological  invasions,  as  widespread  invasive  woody  shrubs  (i.e.,  common  buckthorn  [Rhamnus  cathartica])  are  known  to  affect  seed  fate  and  are  also  known  to  exhibit  leafing  phenology  that  is  different  from  native  shrubs  and  could  cause  changes  in  seed  predation  by  rodents  (e.g.,  white-footed  mice  [Peromyscus  leucopus]).  By  conducting  an  experiment  that  coupled  an  invasive  shrub  manipulation  with  a  seasonal  seed  removal  study,  I  found  that  both  native  tree  seeds  and  R.  cathartica  seeds  were  at  the  greatest  risk  of  consumption  in  habitats  invaded  by  invasive  shrubs  regardless  of  the  time  of  year.  These  findings  help  reveal  the  optimal  window  for  seed  survival  for  seed  addition  restoration  projects  following  the  removal  of  invasive  shrubs  by  identifying  both  winter  and  spring  as  key  times  of  year  that  seeds  may  be  most  likely  to  escape  predation.  In another  experiment  that  used  a  large-scale  invasive  shrub  manipulation  across  a  rural-to-urban  forest  gradient  spanning  multiple  seasons,  I  found  that  sites  in  highly  urban  environments  had  both  high  levels  of  eastern  grey  squirrel  activity  (Sciurus  carolinensis)  and  high  levels  of  oak  acorn  loss.  Additionally,  elevated  P.  leucopus  activity  during  autumn  in  R.  cathartica  removal  plots  indicated  the  strength  of  resource  pulses  provided  by  seed  depots.  Together,  the  findings  from  these  two  experiments  demonstrate  seasonal  variation  in  small  mammal  granivory  and  illustrate  the  spatial  and  temporal  scale  of  seed  loss  linked  to  variability  in  local  environmental  conditions. Because  the  effectiveness  of  seed  addition  may  be  particularly  reduced  as  forests  become  increasingly  invaded  by  exotic  woody  shrubs  that  can  amplify  small  mammal  granivory,  there  is  a  growing  need  to  develop  novel,  effective  restoration  practices  focused  on  promoting  native  tree  seed  survival  for  maintaining  sustainable  forest  regeneration.  I  explored  a  novel  method  of  protecting  seeds  from  granivory  by  conducting  an  experiment  using  capsaicin-extract  coated  black  cherry  (Prunus  serotina)  seeds.  I  found  that  the  removal  of  invasive  shrubs,  not  capsaicin  coatings,  reduced  seed  loss.  During  the  course  of  the  5-month  sampling  period,  I  also  found  a  significant  reduction  in  the  remaining  capsaicin  concentration  found  on  seeds,  indicating  a  need  for  longer-lasting  coating  techniques.  In  another  experiment  that  measured  both  the  rate  of  seed  loss  and  fate  of  capsaicin  coated  red  oak  (Quercus  rubra)  acorns,  I  found  that  applying  capsaicin  on  seed  coats  deterred  rodent  granivory,  and  that  this  deterrence  was  strengthened  by  the  removal  of  invasive  shrubs.  Additionally,  I  observed  no  differences  in  dispersal  distance  between  capsaicin  and  control  acorns,  indicating  that  capsaicin  may  be  used  to  both  deter  granivores  without  hindering  dispersal  of  Q.  rubra.  Together,  these  experiments  reinforce  the  utility  of invasive  shrub  removal  as  an  effective  restoration  strategy  as  well  as  provide  support  for  the  use  of  chemical  seed  coatings  to  deter  granivorous  rodents.
■590    ▼aSchool  code:  0262.
■650  4▼aEcology
■650  4▼aPlant  sciences
■650  4▼aWildlife  management
■650  4▼aAnimal  sciences
■653    ▼aInvasive  shrubs
■653    ▼aRhamnus  cathartica
■653    ▼aSeed  predation
■653    ▼aSmall  mammals
■653    ▼aPeromyscus  leucopus
■690    ▼a0329
■690    ▼a0475
■690    ▼a0479
■690    ▼a0286
■71020▼aThe  University  of  Wisconsin  -  Madison▼bIntegrative  Biology.
■7730  ▼tDissertations  Abstracts  International▼g86-12B.
■790    ▼a0262
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358387▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

미리보기

내보내기

chatGPT토론

Ai 추천 관련 도서


    신착도서 더보기
    최근 3년간 통계입니다.

    소장정보

    • 예약
    • 소재불명신고
    • 나의폴더
    • 우선정리요청
    • 비도서대출신청
    • 야간 도서대출신청
    소장자료
    등록번호 청구기호 소장처 대출가능여부 대출정보
    TF15583 전자도서 대출가능 마이폴더 부재도서신고 비도서대출신청 야간 도서대출신청

    * 대출중인 자료에 한하여 예약이 가능합니다. 예약을 원하시면 예약버튼을 클릭하십시오.

    해당 도서를 다른 이용자가 함께 대출한 도서

    관련 인기도서

    로그인 후 이용 가능합니다.