Fenologia de uma comunidade arbórea em cerrado sentido restrito, Barra do Garças, MT, Brasil

Pirani, Flávia Richelli; Sanchez, Maryland; Pedroni, Fernando

doi:10.1590/s0102-33062009000400019

Cited by 87 publications

(96 citation statements)

References 33 publications

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“…Oliveira & De Paula (2001) reported a similar finding, stating that the fruit of most zoochorous plant species of gallery forests in central Brazil ripen in the rainy season. The same phenomenon has been observed in savanna formations (Silberbauer-Gottsberger 2001, Lenza & Klink 2006, Pirani et al 2009, Camargo et al 2013). Based on this information about fruiting phenology, we expected to record more numerous feeding events and interactions during the rainy season since, according to the above cited authors, more fruits ripen during this period.…”

Section: Discussionsupporting

confidence: 77%

“…The fruit production of most Cerrado sensu stricto zoochorous species follows a seasonal pattern, with a peak in fruit ripening in the rainy season (Silberbauer-Gottsberger 2001, Lenza & Klink 2006, Pirani et al 2009, Camargo et al 2013. The same pattern has been observed in Gallery Forests (Oliveira & De Paula 2001).…”

Section: Introductionmentioning

confidence: 66%

“…With an area of about 11,000 ha, this is an important Conservation Unit in the Cerrado containing a variety of phytophysiognomies typical to this biome, including savanna and forest formations (Ribeiro & Walter 2008). The average altitudes in the region range from 600 to 700 m and its soils are classified as clayey dystrophic redyellow latosol (oxisol) (Pirani et al 2009). …”

Section: Methodsmentioning

confidence: 99%

“…The average annual temperature is 25.56C and annual average rainfall is 1,528 mm (Pirani et al 2009). …”

Section: Methodsmentioning

confidence: 99%

“…We tested the hypothesis that forest formations have higher numbers of feeding records and interactions, since most of the zoochorous plants of the Cerrado are concentrated in forests (Pinheiro & Ribeiro 2001, Kuhlmann 2012, and that the records of feeding and interactions show higher values during the rainy season, because there is greater availability of ripe fruit in the Cerrado during this season (Silberbauer-Gottsberger 2001, Lenza & Klink 2006, Pirani et al 2009, Camargo et al 2013. Our second hypothesis is that the composition of frugivorous bird species does not differ between savanna and forest formations or between the dry and rainy seasons, since most of the bird species of the Cerrado occur in both vegetation formations (Silva 1997, Bagno & Marinho-Filho 2001.…”

Section: Introductionmentioning

confidence: 99%

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Interactions between frugivorous birds and plants in savanna and forest formations of the Cerrado

et al. 2014

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We recorded interactions between frugivorous birds and plants in the Cerrado and we assessed the role and importance of birds as potential seed dispersers. We analyzed the distribution of recorded feeding events, bird-plant interactions, and bird species composition between savanna and forest formations and between the dry and rainy seasons. Samplings were carried out from August 2009 to October 2010 and from November 2011 to August 2012 by means of line transects and focal observations. We recorded 348 feeding events and 187 interactions involving 44 plant species and 60 bird species. Most of the feeding events were observed in the forests and during the dry season (χ2 = 39.529; gl = 1; p < 0.001). However, no significant difference was found in the number of interactions (χ2 = 15.975; gl = 1; p = 0.06) between the two vegetation formations and between seasons. The bird species composition differed between savanna and forest formations (ANOSIM, R = 0.238; p < 0.001) and between the dry and rainy seasons (ANOSIM, R = 0.223; p < 0.001). Most of the potential seed dispersers were generalist birds that preferentially occupy forests during the dry season. Records of feeding events in forest formations increased in the dry season, indicating that birds use these sites as foraging areas during this period. We suggest that the preservation of forests in predominantly savanna-like ecosystems such as the Cerrado is extremely important for frugivorous birds and for frugivore-plant interactions.

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Section: Discussionsupporting

confidence: 77%

Section: Introductionmentioning

confidence: 66%

Section: Methodsmentioning

confidence: 99%

“…The average annual temperature is 25.56C and annual average rainfall is 1,528 mm (Pirani et al 2009). …”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Interactions between frugivorous birds and plants in savanna and forest formations of the Cerrado

et al. 2014

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Stem succulence controls flower and fruit production but not stem growth in the desert shrub ocotillo (Fouquieria splendens)

Killingbeck

2019

American J of Botany

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Premise of the Study The C3 desert shrub ocotillo (Fouquieria splendens) completely lacks xeromorphic leaves but is uncommonly both stem succulent and repetitively drought deciduous (documented to have produced many foliation–defoliation cycles during a growing season). Both adaptations conserve water in this xerophyte, but are the roles of succulence and deciduousness merely redundant? The observation that year‐to‐year reproductive effort was relatively consistent while vegetative growth was not offered a critical clue that, coupled with long‐term precipitation data, helped answer this question. Methods At two sites in the Chihuahuan Desert in southern New Mexico, United States, 22 ocotillos were studied annually for more than two decades to explore the relationships among reproductive effort, vegetative stem growth, and patterns of precipitation. Key Results Vegetative stem growth occurred in mid‐ to late summer (July–September), the season of maximum precipitation in the Chihuahuan Desert, and was significantly related to summer precipitation received in the year of growth. Reproductive effort occurred in early to late spring (April–June), which with winter account for minimum precipitation during the year, but was significantly related to summer precipitation received in the previous year, suggesting the importance of stem succulence and stored water. Conclusions While highly variable summer precipitation was responsible for enormous fluctuations in annual ocotillo stem growth, stem succulence insulated reproductive effort from such immense variability. Stem‐stored water allowed the production of flowers and fruits to proceed relatively consistently during the driest years and during the driest time of year in the Chihuahuan Desert.

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Woody Encroachment and Its Control in Periodically Flooded Grasslands of the Pantanal, a Large Brazilian Wetland

Cunha

Silva

Costa

et al. 2021

Flora and Vegetation of the Pantanal Wetland

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Fenologia de uma comunidade arbórea em cerrado sentido restrito, Barra do Garças, MT, Brasil

Cited by 87 publications

References 33 publications

Interactions between frugivorous birds and plants in savanna and forest formations of the Cerrado

Interactions between frugivorous birds and plants in savanna and forest formations of the Cerrado

Stem succulence controls flower and fruit production but not stem growth in the desert shrub ocotillo (Fouquieria splendens)

Woody Encroachment and Its Control in Periodically Flooded Grasslands of the Pantanal, a Large Brazilian Wetland

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