Reproductive biology of woody species in Caatinga, a dry forest of northeastern Brazil

Leite, Ana Virgínia; Machado, Isabel Cristina

doi:10.1016/j.jaridenv.2010.05.029

Cited by 29 publications

(5 citation statements)

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“…These differences among tropical environments reinforce the views of Richards (1986) and Freeman et al (1997) suggesting a polyphyletic origin of dioecy during the evolution of the angiosperms. Dioecy is only found among woody species in Caatinga vegetation (Machado et al, 2006;Leite and Machado, 2010), supporting previous studies associating this sexual system to shrub and tree habit (Flores and Schemske, 1984;Matallana et al, 2005;Parra-Tabla and Bullock, 2002).…”

Section: Discussionsupporting

confidence: 87%

Pollination syndromes in a Caatinga plant community in northeastern Brazil: seasonal availability of floral resources in different plant growth habits

Quirino

Machado

2014

Braz. J. Biol.

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To describe plant phenological patterns and correlate functioning for the quantity and quality of resources available for the pollinator, it is crucial to understand the temporal dynamics of biological communities. In this way, the pollination syndromes of 46 species with different growth habits (trees, shrubs, herbs, and vines) were examined in an area of Caatinga vegetation, northeastern Brazil (7° 28' 45″ S and 36° 54' 18″ W), during two years. Flowering was monitored monthly in all the species, over two years (from January 2003 to December 2004). Pollination syndromes were characterised based on floral traits such as size, colour, morphology, symmetry, floral resources, as well as on direct visual observation of floral visitors on focal plants and published information. We observed differences among the plant growth habits with respect to floral traits, types of resources offered, and floral syndromes. The flowering periods of the species varied among floral syndrome groups. The majority of the melittophilous species flowered during the rainy season in the two study years, while the species of the other pollination syndroms flowered at the end of the dry season. An asynchrony of flowering was noted among the chiropterophilous species, while the phalenophilous group concentrated during the rainy season. The overall availability of floral resources was different during the rainy and the dry seasons, and also it varied among plants with different growth habits. The availability of oil-flowers coincided with the period of low nectar availability. We observed a relationship between the temporal distribution of the pollination syndromes and the availability of floral resources among each growth habits in this tropical ecosystem. Resource allocation in seasonal environments, such as the Caatinga, can function as a strategy for maintaining pollinators, facilitating therefore the reproductive success of plant species. The availability of floral resources during all the year, specially in seasonal environments such as the Caatinga, may function as a strategy to maintain pollinator populations ensuring the reproductive success of the plants.

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Section: Discussionsupporting

confidence: 87%

Pollination syndromes in a Caatinga plant community in northeastern Brazil: seasonal availability of floral resources in different plant growth habits

Quirino

Machado

2014

Braz. J. Biol.

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“…Only one study examined two herbaceous species [ 175 ]. Several other studies dealt exclusively with aspects of reproduction [ 155 , 157 , 169 , 176 – 180 ]. In total, these studies considered only a small proportion (<10%) of the Caatinga flora, which contains more than 1500 species, even when only considering the most typical vegetation types [ 154 ].…”

Section: Plant Ecologymentioning

confidence: 99%

“…The few phenological studies undertaken in the Caatinga region have indicated that precipitation is the major driving factor of phenophases [ 181 ]. Precipitation controls the phenology of numerous species, although other species initiate their phenophases independent of the occurrence of rainfall [ 157 ]. Amorim et al [ 156 ] demonstrated that different species show different responses to soil water availability, with some budding in response to sporadic rainfall during the dry season, while others remain dormant.…”

Section: Plant Ecologymentioning

confidence: 99%

Caatinga Revisited: Ecology and Conservation of an Important Seasonal Dry Forest

Albuquerque

Araújo

El-Deir

et al. 2012

The Scientific World Journal

221

128

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Besides its extreme climate conditions, the Caatinga (a type of tropical seasonal forest) hosts an impressive faunal and floristic biodiversity. In the last 50 years there has been a considerable increase in the number of studies in the area. Here we aimed to present a review of these studies, focusing on four main fields: vertebrate ecology, plant ecology, human ecology, and ethnobiology. Furthermore, we identify directions for future research. We hope that the present paper will help defining actions and strategies for the conservation of the biological diversity of the Caatinga.

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“…Souza et al, 2014;Medeiros et al, 2022). Todavia, em alguns casos, a precipitação parece ser menos importante para a floração de espécies arbóreas, mesmo no regime semiárido da Caatinga (Leite & Machado, 2010), ou em floresta pluvial como a Mata Atlântica (Júnior & Moura, 2012;Santana et al, 2018). Nossos A frutificação da comunidade sucedeu a floração, ocorrendo principalmente no período de transição entre as estações, similar aos achados para a Mata Atlântica em Pernambuco (Lima et al, 2008), no entanto, variações são possíveis, por exemplo: picos no meio da estação chuvosa (Santana et al, 2018), ou mesmo em ambas as estações (Fortunato & Quirino, 2016) em outros fragmentos no Nordeste.…”

Section: Fenofases Vegetativasunclassified

Fenologia da vegetação arbórea em remanescente de Mata Atlântica no estado da Paraíba

Nobre,

Silva Neto,

Quirino

2023

CLCS

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Esse estudo foi desenvolvido visando o acompanhamento fenológico dos padrões vegetativos e reprodutivos de espécies arbóreas em um fragmento de Mata Atlântica na RPPN Gargaú, Santa Rita-PB. As observações fenológicas foram realizadas mensalmente de outubro de 2010 a setembro de 2011. Para a seleção dos indivíduos foi montado uma parcela de 100m2 e selecionado os indivíduos com Circunferência à Altura do Peito (CAP) ≥ 63 cm. O número total de indivíduos amostrados foi de 151, distribuídos em 16 espécies de 14 famílias. Foi observado picos de 76% dos indivíduos em brotamento e 100% com queda foliar, para as fenofases reprodutivas 56% dos indivíduos foram observados em floração; 44% em frutificação. A espécie que apresentou maior período de frutificação foi Protium heptaphyllum, com duração de cinco meses, de dezembro a abril, correspondendo ao final do período seco a início do chuvoso. Padrão encontrado para todas as espécies zoocóricas. As espécies foram caracterizadas quanto a sua dispersão, 11 são zoocóricas (68%), duas são anemocóricas (12%) e uma é autocórica (6%). A floresta tropical se mostra muito sazonal e bastante influenciada pelo clima e precipitação local, principalmente pelas fenofases de brotamento e floração.

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Reproductive biology of woody species in Caatinga, a dry forest of northeastern Brazil

Cited by 29 publications

References 50 publications

Pollination syndromes in a Caatinga plant community in northeastern Brazil: seasonal availability of floral resources in different plant growth habits

Pollination syndromes in a Caatinga plant community in northeastern Brazil: seasonal availability of floral resources in different plant growth habits

Caatinga Revisited: Ecology and Conservation of an Important Seasonal Dry Forest

Fenologia da vegetação arbórea em remanescente de Mata Atlântica no estado da Paraíba

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