DOI: 10.1016/j.foreco.2014.02.010
Scopus记录号: 2-s2.0-84918768416
论文题名: Coqui frog populations are negatively affected by canopy opening but not detritus deposition following an experimental hurricane in a tropical rainforest
作者: Klawinski P.D. ; Dalton B. ; Shiels A.B.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 332 起始页码: 118
结束页码: 123
语种: 英语
英文关键词: Detritus addition
; Eleutherodactylus coqui
; Forest canopy gap
; Frog density dynamics
; Hurricane disturbance
; Tropical rainforest windstorm
Scopus关键词: Debris
; Deposition
; Floors
; Hurricanes
; Storms
; Tropics
; Canopy disturbance
; Detritus addition
; Eleutherodactylus coqui
; Forest canopies
; Interactive effect
; Temporal and spatial scale
; Tropical rain forest
; Vertebrate species
; Forestry
; detritus
; disturbance
; forest canopy
; frog
; hurricane
; population density
; population dynamics
; rainforest
; Forest Canopy
; Forest Litter
; Moisture
; Luquillo Experimental Forest
; Puerto Rico
; Amphibia
; Anura
; Eleutherodactylus coqui
; Hexapoda
; Vertebrata
英文摘要: Hurricanes, cyclones, and typhoons are common disturbances in many island and coastal forests. There is a lack of understanding of the importance to forest biota of the two major physical aspects that occur simultaneously during a hurricane: canopy disturbance and detritus (debris) deposition onto the ground. Using a replicated factorial design, our study involved experimentally determining the independent and interactive effects of canopy opening and debris additions to the forest floor on densities of coqui frogs (Eleutherodactylus coqui). Coquies are the dominant amphibian, and second most common vertebrate species, in the Luquillo Experimental Forest (LEF), a montane, tropical rainforest in northeastern Puerto Rico that frequently experiences hurricanes. Frogs were sampled in all twelve 30. ×. 30. m plots at three periods prior to installing treatments (July 2003, January 2004, July 2004), and at months 1, 3, 6, and 12 post-treatment. The degree of canopy opening and amount of debris deposited onto the forest floor by our experimental treatments closely mimicked conditions resulting from Hurricane Hugo, a severe hurricane that passed over the LEF in 1989. Based on findings from past studies involving natural hurricanes in the LEF, we predicted that coqui densities would increase in response to debris additions, and decrease or remain unchanged in response to canopy disturbance. However, we found that debris deposition had no significant effect on coqui density and that the opening of the canopy was the dominant aspect affecting coqui by significantly reducing their densities. We identified several possible explanations for the decreased coqui densities in open-canopy plots, including decreased litter moisture and insect prey, and temporal and spatial scales associated with disturbance that may have influenced coqui behavior. Following natural hurricanes, and in light of our findings from experimental hurricane impacts, we expect that coquies benefit from patches of intact canopy while suffering reduced densities in open-canopy settings. Furthermore, based on our study and other experimental forest studies involving frogs, future forest practices that remove significant canopy should probably be viewed as having an initially (up to 1. year) negative effect on the frog community. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65729
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology, William Jewell College, 500 College Hill, WJC Box 1040, Liberty, MO, United States; Institute for Tropical Ecosystems Studies, University of Puerto Rico-Rio Piedras, P.O. Box 70377, San Juan, PR, United States; Department of Biology, Missouri State University, Springfield, MO, United States; USDA, National Wildlife Research Center, Hawaii Field Station, P.O. Box 10880, Hilo, HI, United States
Recommended Citation:
Klawinski P.D.,Dalton B.,Shiels A.B.. Coqui frog populations are negatively affected by canopy opening but not detritus deposition following an experimental hurricane in a tropical rainforest[J]. Forest Ecology and Management,2014-01-01,332