Comparação da morfologia foliar de espécies arbóreas de três estádios sucessionais distintos de floresta ombrófila densa (Floresta Atlântica) no Sul do Brasil

Boeger, Maria Regina Torres; Wisniewski, Celina

doi:10.1590/s0100-84042003000100007

Cited by 69 publications

(61 citation statements)

References 31 publications

(42 reference statements)

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“…According to Boeger et al (1997), all species with xeromorphic characteristics are heliophytes occuring at early stages of succession, and have wide geographic distributions (Reitz et al, 1987). This suggested that the xeromorphic features observed were strategies for survival under adverse environmental conditions, as observed at the early stages of the successional process in sand oligotrophic soils (Boeger et al, 2003). The morphological parameters of leaves from the most studied species were similar to those of species from other lowland rain forests (Grubb et al, 1975;Pyykko, 1979;Roth, 1984;Bongers and Popma, 1990).…”

Section: Resultsmentioning

confidence: 56%

Leaf morphology of 89 tree species from a lowland tropical rain forest (Atlantic forest) in South Brazil

Boeger

Alves

Negrelle

2004

Braz. arch. biol. technol.

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Section: Resultsmentioning

confidence: 56%

Leaf morphology of 89 tree species from a lowland tropical rain forest (Atlantic forest) in South Brazil

Boeger

Alves

Negrelle

2004

Braz. arch. biol. technol.

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“…Pioneer species commonly present a higher Mg content in green leaves than nonpioneer species (Boeger et al, 2005) because they have higher photosynthetic activity due to the increased exposure to solar radiation, which increases Mg requirement, an essential element for photosynthesis (Larcher, 2000). Moreover, species in the early stages of succession usually present larger amounts of tissue with secondary walls in the leaves, where Mg accumulates, than do plants that feature the more advanced stages of succession (Boeger & Wisniewski, 2003). P. decussata was the only pioneer species that did not fit this pattern.…”

Section: Resultsmentioning

confidence: 98%

“…Agronomy Maringá, v. 38, n. 1, p. 93-101, Jan.-Mar., 2016 certain species to low-fertility soils (Magalhães & Blum, 1999). Pioneer species colonize infertile soils likely through the combination of two characteristics, low nutrient requirements and the efficient use of these elements (Boeger & Wisniewski, 2003), by increasing internal retranslocation, which is influenced by the continuous growth of these plants (Fife & Nambiar, 1997). Thus, pioneer species with fast growth may have higher nutrient retranslocation rates than the non-pioneer species in low-fertility soils.…”

Section: Introductionmentioning

confidence: 99%

<b>Nutrient retranslocation in forest species in the Brazilian Amazon

et al. 2016

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ABSTRACT.Internal retranslocation is an important mechanism for nutrient conservation in plants, which depends on different factors. However, there are little data about this subject, especially on tropical forest species. This study aimed to evaluate the macronutrient retranslocation dynamic and the influence of ecological (P: pioneer x NP: non-pioneer) and phenological (ND: non-deciduous x D: semideciduous / deciduous) characteristics on the macronutrient content of leaves of five tree species on monospecific plantations in the Brazilian Amazon: Acacia mangium Willd., Parkia decussata Ducke, Dipteryx odorata (Aublet) Willd., Jacaranda copaia (Aubl.) D. Don and Swietenia macrophylla King. Photosynthetically active green leaves and senescent leaves (leaf litter) were collected. Retranslocation was estimated through an equation proposed by Attiwill, Guthrie and Leuning (1978). The pioneer species presented higher foliar contents of N; the non-pioneer species presented higher contents of K, Ca and S; and the results were inconclusive for P and Mg. The deciduous species presented higher foliar contents of K and of P, whereas the foliar contents of N, Ca, Mg and S were virtually identical between the phenological groups. The internal retranslocation of foliar nutrients in pioneer and non-deciduous species was higher than that of nonpioneer and deciduous species.Keywords: ecological groups, litterfall, nutrient cycling, phenological groups, plant nutrition. Retranslocação de nutrientes em espécies florestais na Amazônia Brasileira RESUMO.A retranslocação interna é um importante mecanismo de conservação de nutrientes nas plantas, que depende de diferentes fatores. Contudo, ainda são incipientes os dados desta natureza, principalmente para espécies florestais tropicais. O presente trabalho objetivou avaliar a dinâmica de retranslocação de macronutrientes e a influência dos grupos ecológico (P: pioneiras x NP: não-pioneiras) e fenológico (ND: não-decíduas x D: semidecíduas / decíduas) nas concentrações foliares de macronutrientes em cinco espécies arbóreas em monocultivo na Amazônia brasileira: Acacia mangium Willd., Parkia decussata Ducke, Dipteryx odorata (Aublet) Willd., Jacaranda copaia (Aubl.) D. Don e Swietenia macrophylla King. Para tanto, foram coletadas folhas verdes fotossinteticamente ativas e folhas da serapilheira. A retranslocação foi estimada segundo a equação de Attiwill, Guthrie e Leuning (1978). As espécies pioneiras apresentaram maiores concentrações foliares de N; as não-pioneiras apresentaram maiores concentrações de K, Ca e S; e os resultados foram inconclusivos para P e Mg. As concentrações foliares de K e de P foram maiores nas espécies decíduas, enquanto que as de N, Ca, Mg e S foram praticamente idênticas entre os grupos fenológicos. No geral, as espécies pioneiras e as não-decíduas foram mais eficientes na retranslocação de nutrientes.Palavras-chave: grupos ecológicos, serapilheira, ciclagem de nutrientes, grupos fenológicos, nutrição de plantas.

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“…Kieffer, 1913 (Diptera, Chironomidae) and Phylloicus bromeliarum Müller, 1880 (Trichoptera, Calamoceratidae) was higher when exposed to leaf detritus enriched with nutrients (N and P) and suggested that leaf quality is also important to the development of shredders in bromeliad tanks. Possibly, the xeromorphic characteristics of leaf detritus produced in restinga, such as thick cuticles, wax deposition and high tannin content (Rôças et al, 1997;Boeger and Wisniewski, 2003;Mantuano et al, 2006), are related to the absence of typical shredders in the bromeliads studied. However, even with refractory characteristics, leaf detritus may contribute indirectly to maintenance of phytotelmata in the study area because they can provide nutrients to the host plants (Benzing and Renfrow, 1974;Inselsbacher et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Assessing the role of canopy cover on the colonization of phytotelmata by aquatic invertebrates: an experiment with the tank-bromeliad Aechmea lingulata

et al. 2016

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The presence of canopy cover may influence the amount of organic detritus and stored water in bromeliad tanks and, consequently, the colonization of these ecosystems by aquatic invertebrates. The aim of this study was to determine the effects of canopy cover on the colonization of the tank-bromeliad Aechmea lingulata in the restinga, an ecosystem composed of a variety of plant communities in the sandy coastal plains of Brazil. We hypothesized that the taxonomic composition of invertebrate communities would differ between bromeliads covered and not covered by a dense canopy (shaded and unshaded bromeliads). Prior to the beginning of the experiment, bromeliads of similar size were carefully washed to remove all organisms and organic detritus, and their tanks were filled with 1.0 L of spring water. On days 7, 14, 21, 30, 45, 60 and 90, four bromeliad tanks of each shade treatment were sampled to determine invertebrate communities, stored water and organic detritus. Average daily values of water temperature and light intensity were higher in unshaded than in shaded bromeliads. The amount of fine particulate organic matter (FPOM) and stored water did not differ between treatments, but the amount of coarse particulate organic matter (CPOM) was higher in shaded bromeliads. Ostracoda, Hydracarina and Oligochaeta were the most abundant taxa in bromeliad tanks. Among insects, Culicidae, Chironomidae and Ceratopogonidae were the most representative. Invertebrate colonization occurred quickly and values of abundance were higher in unshaded bromeliads compared to shaded bromeliads. The values for biomass and richness did not differ between treatments or colonization times, and the taxonomic composition of invertebrate communities was similar throughout the experiment. Our results showed that canopy cover had a small influence on the colonization of tanks of A. lingulata in restinga, not corroborating the proposed hypothesis. These findings were likely due to the lack of variation in environmental conditions that are relevant to the colonization process, such as stored water and FPOM. However, because the amounts of CPOM were higher in shaded bromeliads, the taxonomic composition of invertebrate communities could have differed if typical shredders were present.

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Comparação da morfologia foliar de espécies arbóreas de três estádios sucessionais distintos de floresta ombrófila densa (Floresta Atlântica) no Sul do Brasil

Cited by 69 publications

References 31 publications

Leaf morphology of 89 tree species from a lowland tropical rain forest (Atlantic forest) in South Brazil

Leaf morphology of 89 tree species from a lowland tropical rain forest (Atlantic forest) in South Brazil

<b>Nutrient retranslocation in forest species in the Brazilian Amazon

Assessing the role of canopy cover on the colonization of phytotelmata by aquatic invertebrates: an experiment with the tank-bromeliad Aechmea lingulata

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