Arid
DOI10.1111/j.1466-822X.2004.00111.x
Environmental control of flowering periodicity in Costa Rican and Mexican tropical dry forests
Borchert, R; Meyer, SA; Felger, RS; Porter-Bolland, L
通讯作者Borchert, R
来源期刊GLOBAL ECOLOGY AND BIOGEOGRAPHY
ISSN0960-7447
出版年2004
卷号13期号:5页码:409-425
英文摘要

Aim We analyse the proximate causes of the large variation in flowering periodicity among four tropical dry forests (TDF) and ask whether climatic periodicity or biotic interactions are the ultimate causes of flowering periodicity.


Location The four TDFs in Guanacaste (Costa Rica), Yucatan, Jalisco and Sonora (Mexico) are characterized by a 5-7 month long dry season and are located along a gradient of increasing latitude (10-30degreesN).


Methods To dissect the differences in flowering periodicity observed at the community level, individual tree species were assigned to ’flowering types’, i.e. groups of species with characteristic flowering periods determined by similar combinations of environmental flowering cues and vegetative phenology.


Results Large variation in the fraction of species and flowering types blooming during the dry and wet season, respectively, indicates large differences in the severity of seasonal drought among the four forests. In the dry upland forests of Jalisco, flowering of leafless trees remains suppressed during severe seasonal drought and is triggered by the first rains of the wet season. In the other forests, leaf shedding, exceptional rainfall or increasing daylength cause flowering of many deciduous species at various times during the dry season, well before the summer rains. The fraction of deciduous species leafing out during the summer rains and flowering when leafless during the dry season is largest in the Sonoran TDF.


Main conclusions In many wide-ranging species the phenotypic plasticity of flowering periodicity is large. The distinct temporal separation of spring flowering on leafless shoots and subsequent summer flushing represents a unique adaptation of tree development to climates with a relatively short rainy season and a long dry season. Seasonal variation in rainfall and soil water availability apparently constitutes not only the proximate, but also the ultimate cause of flowering periodicity, which is unlikely to have evolved in response to biotic adaptive pressures.


英文关键词Costa Rica flower induction flowering phenology Mexico photoperiodic control rainfall periodicity tropical deciduous forest tropical tree phenology
类型Article
语种英语
国家USA ; Mexico
收录类别SCI-E
WOS记录号WOS:000223112700003
WOS关键词DECIDUOUS FOREST ; SONORAN DESERT ; TREES ; PHENOLOGY ; RAIN ; INDUCTION ; LOWLANDS ; REGION ; CACTI ; WET
WOS类目Ecology ; Geography, Physical
WOS研究方向Environmental Sciences & Ecology ; Physical Geography
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/146902
作者单位(1)Univ Kansas, Div Biol Sci, Lawrence, KS 66045 USA;(2)Drylands Inst, Tucson, AZ 85719 USA;(3)Inst Ecol, AC, Xalapa 91070, Veracruz, Mexico
推荐引用方式
GB/T 7714
Borchert, R,Meyer, SA,Felger, RS,et al. Environmental control of flowering periodicity in Costa Rican and Mexican tropical dry forests[J],2004,13(5):409-425.
APA Borchert, R,Meyer, SA,Felger, RS,&Porter-Bolland, L.(2004).Environmental control of flowering periodicity in Costa Rican and Mexican tropical dry forests.GLOBAL ECOLOGY AND BIOGEOGRAPHY,13(5),409-425.
MLA Borchert, R,et al."Environmental control of flowering periodicity in Costa Rican and Mexican tropical dry forests".GLOBAL ECOLOGY AND BIOGEOGRAPHY 13.5(2004):409-425.
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