Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2017.03.028 |
Why mistletoes are more aggregated in disturbed forests? The role of differential host mortality | |
Fonturbel, Francisco E.1; Salazar, Daniela A.2; Medel, Rodrigo2 | |
2017-06-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2017 |
卷号 | 394 |
文章类型 | Article |
语种 | 英语 |
国家 | Chile |
英文摘要 | Mistletoes rely on biotic seed dispersal to ensure their recruitment on appropriate host plants, as their seeds must be deposited on safe sites to allow attachment. As most host-parasite systems, mistletoe's spatial distribution depends on the spatial arrangement of the hosts and on the seed disperser's behavior. We used the mistletoe Tristerix corymbosus, which is solely dispersed by the arboreal marsupial Dromiciops gliroides, and it is capable to parasitize a wide range of hosts. We previously found T. corymbosus mistletoes to be more abundant and densely aggregated in disturbed habitats, compared to neigh-boring native forests, at similar levels of disperser abundance and host availability. To explain this pattern, we tested two non-mutually exclusive hypotheses: (1) the larger resource availability in disturbed habitats modify the disperser behavior reducing its home range, and (2) plant species in disturbed habitats are better hosts and offer higher survival probabilities. We sampled 300 mistletoes (98 at the native forest and 202 at the disturbed habitat), which were followed from November 2011 to March 2015 for estimating survival rates and conducting point-pattern analyses. Besides, we tracked ten Dromiciops gliroides individuals using VHF telemetry at both habitats to estimate the home range areas in the two habitats. Mistletoes were aggregated in both habitat types, being stronger at the disturbed habitat with dense plant clumps. Besides, no differences were found on home range of individual D. gliroides between habitats despite structural and resource availability differences. However, mistletoe survival significantly differed between habitats, as mistletoes had a survival probability of 82.87% at the disturbed habitat, whereas survival probability at the non-disturbed habitat was 53.33%. The most common host species at the non-disturbed habitat is Pluchea absinthioides, a seasonal shrub where mistletoes had a survival probability of 29%. At the disturbed habitat, however, the most common hosts are the shade-intolerant shrubs Aristotelia chilensis and Rhaphithamnus spinosus, which had very low mortality rates. The aggregation pattern found at the disturbed habitat is likely to emerge from differential host mortality rather than behavioral changes on the seed disperser vector. (C) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Dromiciops gliroides Plant-animal interactions Plant -plant interactions Point-pattern analysis Spatial ecology Tristerix corymbosus |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401381500002 |
WOS关键词 | MONTE DROMICIOPS-GLIROIDES ; SEED-DISPERSAL ; PARASITIC PLANTS ; PATTERN ; POLLINATION ; BEHAVIOR ; SCALE ; HETEROGENEITY ; LORANTHACEAE ; RESOURCE |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24332 |
专题 | 气候变化 |
作者单位 | 1.Pontificia Univ Catolica Valparaiso, Fac Ciencias, Inst Biol, Ave Univ 330, Valparaiso 2340000, Chile; 2.Univ Chile, Fac Ciencias, Dept Ciencias Ecol, Las Palmeras 3425, Santiago 7800024, Chile |
推荐引用方式 GB/T 7714 | Fonturbel, Francisco E.,Salazar, Daniela A.,Medel, Rodrigo. Why mistletoes are more aggregated in disturbed forests? The role of differential host mortality[J]. FOREST ECOLOGY AND MANAGEMENT,2017,394. |
APA | Fonturbel, Francisco E.,Salazar, Daniela A.,&Medel, Rodrigo.(2017).Why mistletoes are more aggregated in disturbed forests? The role of differential host mortality.FOREST ECOLOGY AND MANAGEMENT,394. |
MLA | Fonturbel, Francisco E.,et al."Why mistletoes are more aggregated in disturbed forests? The role of differential host mortality".FOREST ECOLOGY AND MANAGEMENT 394(2017). |
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