Germination niche breadth differs in two co-occurring palms of the Atlantic Rainforest

Braz, Maria Isabel Guedes; Portela, Rita de Cássia Quitete; Cosme, Luiza Helena Menezes; Marques, Veronica Guimarães Coutinho; Mattos, Eduardo Arcoverde de

doi:10.1016/j.ncon.2014.09.003

Cited by 18 publications

(36 citation statements)

References 17 publications

(19 reference statements)

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“…Shade might then be gradually eliminated, exposing plants to full sun around the third year after planting (Martins and Souza 2009). Braz et al (2014) report that juçara seeds are insensitive to light in conditions of high water saturation (overflow). Thus water availability might even be more important than luminosity during the germination phase.…”

Section: Resultsmentioning

confidence: 99%

Emergencia y vigor de plántulas de Euterpe edulis bajo niveles de sombreado y presencia y ausencia del pericarpio

Guimarães

Souza

Dan

et al. 2018

Idesia

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Section: Resultsmentioning

confidence: 99%

Emergencia y vigor de plántulas de Euterpe edulis bajo niveles de sombreado y presencia y ausencia del pericarpio

Guimarães

Souza

Dan

et al. 2018

Idesia

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“…The influence of microhabitat conditions on the distribution of S. weddelliana was expected because the species has a narrow germination niche with respect to water and light availability (Braz, Portela, Cosme, Marques, & Mattos, 2014). Species with restricted distributions are very dependent on the specific conditions of their microhabitat (Peterson, 2003) and less tolerant of environmental change (Cochrane et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Micro‐ or macroscale? Which one best predicts the establishment of an endemic Atlantic Forest palm?

Oda

Siqueira

Pires

et al. 2019

Ecology and Evolution

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Historically, macroecology and microecology have diverged with regard to the niche concept. A better understanding of functioning ecological systems, however, depends on an integrative approach to this concept at different spatial scales. A mixed approach, merging macro‐ and microscale by validating ecological niche modeling (ENM) with the results of in situ experiments and environmental data collection was used to understand if areas identified by ENM as highly suitable for adult palms are also adequate for seedling establishment. Syagrus weddelliana's (Arecaceae) distribution range falls within the Atlantic Rain Forest, and more specifically Serra dos Órgãos region (Rio de Janeiro state), southeastern Brazil. The following steps were performed: (a) ENM to delimit the area of occurrence of S. weddelliana and locate experimental areas; (b) a seed sowing experiment in areas with presence or absence of the species in areas of high or low environmental suitability at 36 experimental stations; and (c) characterization of each microhabitat which was related back to the macroscale results of ENM. Evidence of biotic and abiotic limitations was found for S. weddelliana distribution. Areas of higher suitability had lower seed predation rates and, consequently, higher seed germination rates. On the other hand, areas with low environmental suitability at the macroscale were divided into two types: areas with microhabitat similar to that of areas with high environmental suitability that had some germination despite high predation and areas with different environmental conditions that had no germination and high predation rates. Seedlings and adults had different abiotic requirements. Microhabitat conditions were more important for the initial establishment of S. weddelliana than macroclimatic variables. This finding demonstrates that macro‐ and microecological information works in a complementary way to a better understanding of the distribution of S. weddelliana.

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“…The measurement of GT 50 seems plausible to illustrate inhibition of seed germination by the herbicides. Indeed, GT 50 has been employed to study plant germination under various environmental conditions [14][15][16]. Despite the fact that the investigated herbicides are usually applied on the seedlings, one objective of the study was to explore an effective way to eradicate P. juliflora by targeting seeds.…”

Section: Effect Of P Juliflora Extracts On Seed Germination and Seedmentioning

confidence: 99%

Preliminary Investigations of Allelopathic Effects and Herbicide-based Eradication of Mesquite (Prosopis juliflora)

Al-Abdali

Al-Dhuhli

Al-Reasi

2019

SQU Journal for Science

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Velvet mesquite, locally known as al-ghaf bahri (Prosopis juliflora), is a well-known invasive alien plant species in several regions around the world, including Oman, with various environmental effects. The allelopathic effect of P. juliflora leaves and seed pods on native ghaf (P. cineraria) and a crop species, mung bean (Vigna radiata) was demonstrated. Results indicated that P. juliflora extracts have inhibitory effects on seed germination and seedling growth of both species, particularly on P. cineraria when exposed to pod extracts. For eradication experiments, three herbicides (tribenuron methyl, clethodim and 2,4-D & MCPA) were investigated to determine their inhibitory properties on seed germination, and on the growth and development of young seedlings of P. juliflora. Generally, germination time (GT50, time required for 50% of seeds to germinate) and germination percentage (%) indicated that only 2,4-D & MCPA treatment showed a significant effect on inhibiting seed germination and stopping seedling growth relative to the other two herbicides. The effect of 2,4-D & MCPA was supported by significant reduction in above-ground fresh biomass. The data clearly illustrate the potential negative effects of P. juliflora on other plant species and its tolerance of herbicide treatment. On a farm scale, limited application of 2,4-D & MCPA on young P. juliflora seedlings would be recommended as an effective way to limit further spread and distribution and consequently to successfully eliminate this invasive alien plant.

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Germination niche breadth differs in two co-occurring palms of the Atlantic Rainforest

Cited by 18 publications

References 17 publications

Emergencia y vigor de plántulas de Euterpe edulis bajo niveles de sombreado y presencia y ausencia del pericarpio

Emergencia y vigor de plántulas de Euterpe edulis bajo niveles de sombreado y presencia y ausencia del pericarpio

Micro‐ or macroscale? Which one best predicts the establishment of an endemic Atlantic Forest palm?

Preliminary Investigations of Allelopathic Effects and Herbicide-based Eradication of Mesquite (Prosopis juliflora)

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