자료유형 | 학위논문 |
---|---|
서명/저자사항 | The Role of Climate in Outbreaks of Larch Casebearer. |
개인저자 | Ward, Samuel Fahrner. |
단체저자명 | University of Minnesota. Entomology. |
발행사항 | [S.l.]: University of Minnesota., 2018. |
발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2018. |
형태사항 | 206 p. |
기본자료 저록 | Dissertations Abstracts International 81-04B. Dissertation Abstract International |
ISBN | 9781687924537 |
학위논문주기 | Thesis (Ph.D.)--University of Minnesota, 2018. |
일반주기 |
Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
Advisor: Aukema, Brian H. |
이용제한사항 | This item must not be sold to any third party vendors. |
요약 | Larch casebearer, Coleophora laricella Hubner (Lepidoptera: Coleophoridae), is an invasive insect in North America that was introduced from Europe in the late 1800s and defoliates larch trees. Once combatted successfully with an importation biological control program, it has resurged in several parts of its invaded range. This dissertation describes several laboratory, field, and landscape studies to examine the effects of photoperiod and temperature on survival and development of larch casebearer. First, I characterized patterns in defoliation. From 1997-2016, defoliation fluctuated synchronously between forests of western larch (Larix occidentalis) in Oregon/Washington and eastern larch (Larix laricina) in Minnesota, suggesting that climate acting across large spatial scales may drive similar patterns among allopatric casebearer populations. In Minnesota, I found that warmer minimum winter temperatures appeared to have contributed to the resurgence of larch casebearer in Minnesota. Spring phenological synchrony between bud break by eastern larch and larval activation did not appear to drive the resurgence |
일반주제명 | Ecology. |
언어 | 영어 |
바로가기 |
: 이 자료의 원문은 한국교육학술정보원에서 제공합니다. |