DOI: 10.1016/j.foreco.2014.06.040
Scopus记录号: 2-s2.0-84918839502
论文题名: Divergent responses of leaf herbivory to simulated hurricane effects in a rainforest understory
作者: Prather C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 332 起始页码: 87
结束页码: 92
语种: 英语
英文关键词: Canopy detritus
; Hurricane disturbance
; Light gap
; Pioneer plant
; Tropical rainforest
; Understory herbivory
Scopus关键词: Conservation
; Debris
; Floors
; Hurricane effects
; Nutrients
; Storms
; Trimming
; Canopy conditions
; Canopy detritus
; Different mechanisms
; Herbivory
; Natural disturbance
; Nutrient availability
; Pioneer plant
; Tropical rain forest
; Forestry
; disturbance
; divergence
; environmental disturbance
; forest canopy
; herbivory
; hurricane
; phytodetritus
; pioneer species
; rainforest
; understory
; Puerto Rico
英文摘要: Hurricanes are major disturbances in many forests, but studies showing effects of natural hurricanes on herbivory rates have yielded mixed results. Forest managers could benefit from a better understanding of the effects of disturbances on herbivory to manage for particular recovery or restoration goals after anthropogenic or natural disturbances, such as logging and windstorms. I measured herbivory on eight understory plant species that are common pioneer and non-pioneer species in a rainforest in Puerto Rico, following experimental manipulation of forest plots to simulate the two major effects of a hurricane (canopy opening and a detrital pulse). I expected that greater leaf production and leaf quality would result from canopy trimming and detritus (debris) addition to the forest floor, respectively, and that both treatments would enhance herbivory rates independently and especially in combination. I found a significant interaction of trim and debris treatments that affected plant species within pioneer and non-pioneer plant groups differently: a debris pulse or canopy trimming alone stimulated understory herbivory over time on non-pioneer and pioneer plants, respectively, but the combination of these two treatments had no effect on herbivory rates. Specifically, herbivory was higher on pioneer plants in plots where the canopy was trimmed but debris had not been added, whereas herbivory was higher on non-pioneer plants in plots where debris was added to the forest floor under intact canopy conditions. Therefore, different mechanisms apparently controlled herbivory of pioneer and non-pioneer species. Pioneer plants likely experienced enhanced herbivory in trimmed plots in part because of the increased densities of pioneer plants responding to canopy trimming; pioneer plants were temporarily less abundant in debris addition plots. Non-pioneer species may have experienced greater herbivory in debris addition plots in part because of increased foliar quality resulting from enhanced nutrient availability associated with the debris pulse. Future, complementary greenhouse and field mesocosm experiments that manipulate the factors likely contributing to these results would help to reconcile results from previous studies that have documented both increases and decreases in herbivory or certain herbivore taxonomic groups resulting from natural hurricanes. Understanding the mechanisms that affect herbivory after hurricanes is important because herbivory can affect nutrient cycling, plant community structure, and ultimately forest recovery after disturbance. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65721
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology and Biochemistry, University of Houston, Houston, TX, United States
Recommended Citation:
Prather C.. Divergent responses of leaf herbivory to simulated hurricane effects in a rainforest understory[J]. Forest Ecology and Management,2014-01-01,332