Floral biology and phenological overlap of angiosperms from a flooded forest, lake Maracaibo basin, Venezuela
Abstract: Background and Aims: Floral biology in tropical communities under seasonal climate has shown a preponderance of floral characters related with generalist pollination. In this context, we described the floral biology of 48 species from a seasonally flooded community with the aim of explorin...
| Huvudupphovsmän: | , |
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| Materialtyp: | Online |
| Språk: | spa |
| Publicerad: |
Instituto de Ecología, A.C.
2020
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| Länkar: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1704 |
| _version_ | 1799771380672102400 |
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| author | Barrios Orozco, Yeni Celeste Ramírez, Nelson |
| author_facet | Barrios Orozco, Yeni Celeste Ramírez, Nelson |
| author_sort | Barrios Orozco, Yeni Celeste |
| collection | ABM |
| description | Abstract:
Background and Aims: Floral biology in tropical communities under seasonal climate has shown a preponderance of floral characters related with generalist pollination. In this context, we described the floral biology of 48 species from a seasonally flooded community with the aim of exploring the relationship between floral traits, examining the diversity of pollination syndromes and evaluating the effectiveness of this concept to predict pollinator classes. The overlap of flowering periods of species with the same pollination syndromes and/or pollinator classes was also explored in order to look for a pattern that could reflect the adverse effects of the pollinators overlap.
Methods: The sexual system, dichogamy and/or hercogamy, type of pollination unit, dimensions, form, symmetry and spatial orientation of the flower, floral attractants and rewards, time of anthesis, floral longevity, pollination syndromes and pollinator classes were described for each species. Interspecific overlap was estimated using Pianka’s index, and then contrasted with randomly generated values.
Key results: Most species were hermaphrodite, adichogamous and not hercogamous; showed individual pollination units, with small dimensions, open forms, radial symmetry, horizontal orientation, white color, and nectar as the principal reward. Flowers showed mainly diurnal anthesis and short longevity, generally of one day. Melittophily was the predominant pollination syndrome and bees were the principal class of pollinators, even though many species were pollinated by more than one type of agent. Temporal distribution of flowering periods did not differ from what is expected from a random arrangement.
Conclusions: The results allow us to conclude that beyond predictions from floral syndromes, in the community prevails a polyphilic system that possibly results in greater pollination opportunities for plant species. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1704 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2020 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-17042022-11-17T21:06:30Z Floral biology and phenological overlap of angiosperms from a flooded forest, lake Maracaibo basin, Venezuela Biología floral y solapamiento fenológico de las angiospermas de un bosque inundable, cuenca del lago de Maracaibo, Venezuela Barrios Orozco, Yeni Celeste Ramírez, Nelson fenología floral humedales polinización síndromes de polinización solapamiento interespecífico. floral phenology, interspecific overlap pollination pollination syndromes wetlands Abstract: Background and Aims: Floral biology in tropical communities under seasonal climate has shown a preponderance of floral characters related with generalist pollination. In this context, we described the floral biology of 48 species from a seasonally flooded community with the aim of exploring the relationship between floral traits, examining the diversity of pollination syndromes and evaluating the effectiveness of this concept to predict pollinator classes. The overlap of flowering periods of species with the same pollination syndromes and/or pollinator classes was also explored in order to look for a pattern that could reflect the adverse effects of the pollinators overlap. Methods: The sexual system, dichogamy and/or hercogamy, type of pollination unit, dimensions, form, symmetry and spatial orientation of the flower, floral attractants and rewards, time of anthesis, floral longevity, pollination syndromes and pollinator classes were described for each species. Interspecific overlap was estimated using Pianka’s index, and then contrasted with randomly generated values. Key results: Most species were hermaphrodite, adichogamous and not hercogamous; showed individual pollination units, with small dimensions, open forms, radial symmetry, horizontal orientation, white color, and nectar as the principal reward. Flowers showed mainly diurnal anthesis and short longevity, generally of one day. Melittophily was the predominant pollination syndrome and bees were the principal class of pollinators, even though many species were pollinated by more than one type of agent. Temporal distribution of flowering periods did not differ from what is expected from a random arrangement. Conclusions: The results allow us to conclude that beyond predictions from floral syndromes, in the community prevails a polyphilic system that possibly results in greater pollination opportunities for plant species. Antecedentes y Objetivos: La biología floral de comunidades tropicales bajo clima estacional ha mostrado el predominio de caracteres relacionados con la polinización generalista. En este contexto, se describe la biología floral de 48 especies de un bosque inundable con el propósito de explorar la relación entre atributos florales, examinar la diversidad de síndromes de polinización y evaluar la efectividad de este concepto para predecir clases de polinizadores. Además, se analizó el solapamiento de los períodos de floración de las especies con síndromes de polinización y/o clases de polinizadores comunes en búsqueda de un patrón que pudiese reflejar efectos adversos del solapamiento en cuanto a polinizadores. Métodos: En cada especie se describió el sistema sexual, la existencia de dicogamia y/o hercogamia, el tipo de unidad de polinización, las dimensiones, forma, simetría y orientación espacial de las flores, los atrayentes y recompensas florales, el horario de antesis, la longevidad floral, el síndrome de polinización y las clases de polinizadores. El solapamiento interespecífico fue estimado mediante el índice de Pianka y contrastado con valores generados aleatoriamente. Resultados clave: Las especies en su mayoría fueron hermafroditas, adicógamas y no hercógamas; mostraron unidades de polinización individuales, de dimensiones pequeñas, formas abiertas, simetría radial, orientación horizontal, color blanco y néctar como recompensa principal. La antesis fue principalmente diurna y la longevidad floral corta, generalmente de un día. La melitofilia fue el síndrome predominante y las abejas la principal clase de polinizadores, aunque muchas de las especies fueron polinizadas por más de un tipo de agente. La distribución temporal de los períodos de floración no difirió a la de un esquema aleatorio. Conclusiones: Los resultados permiten concluir que más allá de lo predicho por los síndromes florales, en la comunidad prevalece un sistema polifílico que posiblemente redunda en mayores oportunidades de polinización para las especies de plantas. Instituto de Ecología, A.C. 2020-07-23 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf application/epub+zip https://abm.ojs.inecol.mx/index.php/abm/article/view/1704 10.21829/abm127.2020.1704 Acta Botanica Mexicana; No. 127 (2020) Acta Botanica Mexicana; Núm. 127 (2020) 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/1704/3578 https://abm.ojs.inecol.mx/index.php/abm/article/view/1704/3579 Derechos de autor 2020 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Barrios Orozco, Yeni Celeste Ramírez, Nelson Floral biology and phenological overlap of angiosperms from a flooded forest, lake Maracaibo basin, Venezuela |
| title | Floral biology and phenological overlap of angiosperms from a flooded forest, lake Maracaibo basin, Venezuela |
| title_full | Floral biology and phenological overlap of angiosperms from a flooded forest, lake Maracaibo basin, Venezuela |
| title_fullStr | Floral biology and phenological overlap of angiosperms from a flooded forest, lake Maracaibo basin, Venezuela |
| title_full_unstemmed | Floral biology and phenological overlap of angiosperms from a flooded forest, lake Maracaibo basin, Venezuela |
| title_short | Floral biology and phenological overlap of angiosperms from a flooded forest, lake Maracaibo basin, Venezuela |
| title_sort | floral biology and phenological overlap of angiosperms from a flooded forest, lake maracaibo basin, venezuela |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1704 |
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