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Floresta e Ambiente

Print version ISSN 1415-0980On-line version ISSN 2179-8087

Floresta Ambient. vol.25 no.4 Seropédica  2018  Epub Sep 13, 2018 

Original Article

Conservation of Nature

Vegetative and Environmental Components in a Secondary Riparian Forest in the Southern Plateau of Santa Catarina, Brazil

Lilian Iara Bet Stedille1  * 

Juliano Pereira Gomes2 

Newton Clóvis Freitas da Costa3 

Paula Iaschitzki Ferreira4 

Pedro Higuchi1 

Adelar Mantovani1 

1 Grupo de Pesquisa Uso e Conservação dos Recursos Florestais, Universidade do Estado de Santa Catarina – UDESC, Programa de Pós-graduação em Engenharia Florestal, Lages/SC, Brasil

2 Grupo de Pesquisa Uso e Conservação dos Recursos Florestais, Universidade do Estado de Santa Catarina – UDESC, Programa de Pós-graduação em Produção Vegetal, Lages/SC, Brasil

3 Núcleo de Pesquisas em Florestas Tropicais, Universidade Federal de Santa Catarina – UFSC, Programa de Pós-graduação em Recursos Genéticos Vegetais, Florianópolis/SC, Brasil

4 Departamento Ensino, Pesquisa e Extensão, Instituto Federal de Santa Catarina – IFSC, Lages/SC, Brasil


This study investigated the vegetation and environmental variable of fragments at different successional stages in a secondary riparian forest in the municipality of Ponte Alta, Santa Catarina state, Brazil (27°29’00” S and 50°17’11” W, WGS84), aiming to list priority variables for monitoring forest succession in riparian forests. For this, two areas were identified: “Reference” (conserved secondary forest) and “Restoration” (secondary forest under passive restoration). The Principal Component Analysis (PCA) indicated the existence of differences in the arboreal community diversity with lower values for the “Restoration” synthesized by PC1. The ground coverage by Ocellochloa rudis (Nees) Zuloaga & Morrone (Poaceae) was mainly in places with higher pH values and ability for effective cation exchange, with no preference of occurrence in either evaluated site. The composition of arboreal diversity was a relevant variable for monitoring passive restoration in this environment.

Keywords:  araucaria forest; shannon index; Ocellochloa rudis


Monitoring forest succession is a complex process since it involves the successional characteristics of the species and several interactions with biotic and abiotic ecosystem factors. Many ecological processes facilitate successional advancement. However, in some cases thye can act as barriers or strong filters, delaying the balance and services of the system ( Rydgren et al., 2013 ).

The existence of propagule sources, active participation of the soil’s seed bank, the seedling bank and the absence of certain species such as superabundant grasses and allochthonous species are highlighted among biotic factors mainly related to the vegetative variables ( Martins et al., 2012 ; Magnago et al., 2012 ; Rodrigues et al., 2015 ).

Thus, the remaining floristics of a forest has an important ecological role, creating a structure capable of maintaining environmental services such as the propagule supply ( Daronco et al., 2013 ). The soil seed bank can be determinant in the future of the vegetation of an area, since it is primordial in reestablishing tropical forests, in maintaining and restoring diversity richness after natural or anthropic disturbances, and being mostly composed of pioneer species ( Uhl et al., 1988 ; Matías et al., 2010 ).

On the other hand, species of late succession naturally have seeds with shorter natural viability, which often present absence or little dormancy germinating soon after dispersion, without remaining in the seed bank ( Vale et al., 2009 ). These species instead remain in the seedling bank comprising the forest's regenerating stratum, awaiting favorable conditions for their development ( Chami et al., 2011 ), and when they are often more vulnerable to abiotic and biotic conditions ( Milhomem et al., 2013 ).

The interspecific competition is one of the main ecological processes involved in forest succession, with emphasis on ruderal species that are cited as ecological filters for the reestablishment of native species ( Brancalion et al., 2010 ), for example, representatives of the Poaceae family, which are superabundant in altered forests ( Schmidt & Longhi-Wagner, 2009 ).

The canopy cover is another factor that interferes in the successional dynamics since it represents a filter to the energetic flow for the lower sectors of the forest, thereby determining the spatial distribution of species, forest dynamics, and biomass production among other processes ( Vilani et al., 2007 ). Places with little canopy cover favor the presence of species with pioneering characteristics ( Martins, 2001 ).

In addition to the aforementioned factors, the chemical and physical characteristics of the soil should also be considered for monitoring the succession since they form microhabitats that influence the floristic composition ( Baylão et al., 2013 ; Holl, 2013 ). Besides to biotic and abiotic factors, external factors are also involved in the reestablishment of the communities such as ecological flow, regional species composition and landscape connectivity ( Suding & Hobbs, 2009 ).

Considering the performance of the different factors involved in forest succession, the complexity of performing “artificial” regeneration of a forest by planting seedlings is highlighted. Therefore, the passive restoration is important as an efficient way of recomposing degraded areas. In order to verify the efficiency of passive restoration in recomposing riparian forests in the Southern Plateau region of Santa Catarina, this study aimed to characterize and investigate some vegetative and environmental variables of preserved secondary forest fragments and those under passive restoration, determining the priority variables for monitoring forest succession.


2.1. Study site

The study was conducted in areas of riparian forests of the Poço Grande silvicultural farm ( Figure 1 ). The study site was an area of Araucaria Forest ( IBGE, 2012 ) in the municipality of Ponte Alta, Santa Catarina, Brazil (27°29’00” S and 50°17’11” W, WGS84) under an average altitude of 880 m. The small tributaries and springs that permeated the farm contribute to the Canoas river basin ( Santa Catarina, 1997 ). The relief of the region is classified as wavy/hilly to slightly wavy/hilly relief of hapless cambisol soil with a clay texture ( Morales et al., 2012 ). The climate of the region is classified as humid subtropical mesothermic of “Cfb” type according to Köppen-Geiger, with cool summers and no dry season, frequent severe frosts, average temperature of the hottest months below 22°C and annual rainfall ranging from 1600 to 1900 mm ( Alvares et al., 2014 ).

Figure 1 Location of riparian forests (areas “Reference” and “Restoration”) and other native areas of the Poço Grande farm, Ponte Alta municipality, Santa Catarina state, Brazil.  

Two historically defined sites were used ( Ferreira, 2011 ) ( Figure 1 ): 1) “Reference” - a riparian forest of 176 ha under conserved secondary succession for approximately 40 years without anthropic intervention and with previous selective exploitation in the past; 2) “Restoration” - a secondary riparian forest under passive restoration for 10 years since the removal of forest plantations, seeking environmental adequacy and with a total area of 88 ha. The Southern Plateau of Santa Catarina is characterized by small forest remnants under secondary formation and expressive forestry activity ( Rochadelli et al., 2008 ).

2.2. Data collection

For the arboreal stratum sampling, 20 sample units with dimensions of 10 x 20 m (200 m2 ) were randomly allocated, 10 in each area. All individuals with diameter at breast height (DBH) measured at 1.30 m above ground ≥15.7 cm were identified. For the regenerating stratum sampling, six subunits of 1 m2 were systematically allocated in each 200 m2 sampling unit totaling 60 subunits per area, in which tree individuals with height ≥ 0.1 and ≤ 1.5 m were evaluated. The sampling sufficiency of the arboreal and regenerating strata was verified by species accumulation curves, using the permutation method for each area ( Efron & Tibshirani, 1993 ).

Specialized literature was used and/or specialists were consulted for the species identification. Scientific names were based on the MOBOT Tropicos® ( MOBOT, 2017 ). The species belonging to the arboreal stratum were categorized into dispersal syndromes: zoochorous, anemochorous and autochorous, proposed by Van der Pijl (1972) , based on propagule observations and citations in scientific works (e.g. Rondon et al., 2001 ; Giehl et al., 2007 ), as well as into ecological groups: pioneer, secondary initial, late secondary and climax, according to the descriptions proposed by Budowski (1965) after consulting the literature ( Reitz, 1971 ; Reitz et al., 1978 ).

Along with a survey of the tree community in each 200 m2 plot, quantification of Merostachys multiramea Hack (popularly known in Brazil as taquara) was conducted according to an adaptation of the Fournier index ( Fournier, 1974 ), assigning scores to different intensities of the event “occupation by taquara”. According to this method, soil cover measurement of Ocellochloa rudis (Nees) by Zuloaga & Morrone was also carried out as well as height, performed together with the forest regenerating stratum.

The soil seed bank evaluation was performed with collections in the center of the units (200 m2) using a template (0.3m×0.3m×0.05m (0.0125 m3 )). The substrate was placed in trays stimulating the seed bank germination under 50% shading. Germination monitoring was conducted biweekly (every 14 days) over a period of six months by counting and identifying the arboreal species seedlings.

Determining the chemical and physical variables of the soil, there were 100g of soil samples systematically collected from four points of the sample unit in the superficial layer (up to 20 cm) and then sent to the Soil Analysis Laboratory (Centre of Agroveterinary Sciences, State University of Santa Catarina, Lages, SC, Brazil) according to Tedesco's methodology ( Tedesco et al., 1995 ) for clay determination using the densimeter method. The Canopy cover assessment was carried out according to the methodology proposed by Lemmon (1956) , using a convex spherical densitometer placed systematically at two points of the sample unit (200 m2).

2.3. Data analysis

After the sufficiency of the sampling strata to estimate floristic diversity, the Shannon index ( Ludwig & Reynolds, 1988 ), the basal area (m2. ha-1) and percentage of zoochorous and pioneer individuals per sampling unit were calculated. A mean comparison was carried out for all variables obtained in the “Reference” and “Restoration” areas according to the nature of the data (parametric and non-parametric), and then, the Student's t-test and Mann-Whitney U test were used, respectively,with the exception of the diversity index, which was compared by the Hutcheson t-test ( Hutcheson, 1970 ).

The variables were subsequently standardized and submitted to the Principal Component Analysis (PCA), allowing visualization of the dispersion of the sample units as a function of the Principal Component scores (PC) ( Kent & Coker, 1992 ). A Scree Plot graph was generated to determine the axes to be used in interpreting the results. For the interpretation of the diagram, significant PC scores were considered as those that synthesize a number of variables superior to a model of random distribution (broken-stick ). Then, selection of the most important variables in the formation of the PC axis was verified by the loading values (Pearson correlation between the scores of each axis and the variables), where loading values higher than 0.3 were considered as significant in the analysis ( Mcgarigal et al., 2000 ). The Vegan library version 2.3-0 ( Oksanen et al., 2015 ) and R software version 3.2.2 were used for data analysis ( R Development Core Team, 2015 ).


The arboreal stratum of the “Reference” area had 39 species with 33 genera and 18 botanical families. The family with the highest specific richness was Myrtaceae (8 spp.) followed by the Myrcia genus (3 spp.). Regarding this stratum in the “Restoration” area, the samples of 28 species belonging to 25 genera and 15 botanical families were found, in which the Lauraceae family (3 spp.) and the Ilex genus had the highest specific richness (2 spp.) ( Table 1 ).

Table 1 Arboreal and regenerative floristic components, “Reference” (ref) and “Restoration” (res) areas, presence (+) or absence (-) of the species, followed by ecological grouping (EG) (Where: Pio= pionner; Sei = initial secondary; Sel= late secondary and Cli= climax) and dispersal syndrome (DS) (Where: Ane=anemochorous; Aut= autochorous; Zoo= zoochorous) in riparian forests, Ponte Alta, SC, Brazil.  

Families Species Arboreal Regenerative EG DS
ref res ref res
Anacardiaceae Schinus terebinthifolia Raddi + - - - Sei Zoo
Aquifoliaceae Ilex microdonta Reissek - - - + Sei Zoo
Ilex paraguariensis A. St.-Hill. + + + - Pio Zoo
Ilex theezans Mart. ex Reissek + + - - Sei Zoo
Araucariaceae Araucaria angustifolia (Bertol.) Kuntze + - - - Pio Zoo
Arecaceae Syagrus romanzoffiana (Cham.) Glassman - - + - Sei Zoo
Asteraceae Piptocarpha angustifolia Dusén ex Malme + + - + Pio Ane
Symphyopappus compressus (Gardner) B.L.Rob. - + - - Pio Ane
Vernonanthura discolor (Spreng.) H.Rob. + + - - Pio Ane
Bignoniaceae Jacaranda puberula Cham. - + - + Pio Aut
Cannabaceae Celtis iguanaea (Jacq.) Sarg. - - - + Sei Zoo
Clethraceae Clethra scabra Pers. + + - + Pio Aut
Cunoniaceae Weinmannia paulliniifolia Pohl ex Ser. - - + - Sei Aut
Cyatheaceae Alsophila setosa Kaulf. + + - - Cli Ane
Dicksoniaceae Dicksonia sellowiana Hook. + + + + Cli Ane
Euphorbiaceae Gymnanthes klotzschiana Müll. Arg. + + - - Sei Aut
Fabaceae Dalbergia frutescens (Vell.) Britton + - + + Sei Ane
Inga lentiscifolia Benth. + - + - Sei Zoo
Inga virescens Benth. - - + - Sei Zoo
Mimosa scabrella Benth. + + - - Pio Aut
Lauraceae Cinnamomum amoenum (Nees) Kosterm. + - - - Sei Zoo
Cinnamomum glaziovii (Mez) Kosterm - + - - Cli Zoo
Cryptocarya aschersoniana Mez + - - - Set Zoo
Ocotea puberula (Rich.) Nees + + - + Pio Zoo
Ocotea pulchella (Nees & Mart.) Mez + - - - Pio Zoo
Nectandra lanceolata Nees + + - - Sei Zoo
Nectandra megapotamica (Spreng.) Mez - - - + Sei Zoo
Meliaceae Cedrela fissilis Vell. + + - - Sei Ane
Myrtaceae Calyptranthes concinna DC. + - + - Sei Zoo
Campomanesia rhombea O.Berg - - + - Sei Zoo
Campomanesia xanthocarpa Mart. ex O. Berg + - + - Sei Zoo
Eugenia pluriflora DC. - - + - Sei Zoo
Eugenia subterminalis DC. + - - - Sei Zoo
Myrcia hatschbachii D.Legrand + - + - Sei Zoo
Myrcia palustris DC. + - - - Sei Zoo
Myrcia splendens (Sw.) DC. + + - - Sei Zoo
Myrceugenia miersiana (Gardner) D. Legrand & Kausel + - + - Sei Zoo
Myrceugenia myrcioides (Cambess.) O.Berg + - - - Cli Zoo
Myrtaceae sp1 - - + - - -
Pinaceae Pinus taeda L. - + - - Pio Ane
Primulaceae Myrsine coriacea (Sw.) R.Br. ex Roem. & Schult. + + + - Pio Zoo
Myrsine lorentziana (Mez) Arechav. - - + + Sei Zoo
Proteaceae Roupala montana Aubl. - + - - Sei Ane
Rhamnaceae Rhaminus sphaerosperma Sw. - - - +
Rosaceae Prunus myrtifolia (L.) Urb. - - - + Sei Zoo
Rutaceae Zanthoxylum sp. - - - + Sei Zoo
Salicaceae Banara tomentosa Clos - - + + Sel Zoo
Casearia decandra Jacq. + + + - Sei Zoo
Casearia obliqua Spreng. + - - - Sei Zoo
Sapindaceae Allophylus edulis (A.St.-Hil. et al.) Hieron. ex Niederl. + - + - Sei Zoo
Cupania vernalis Cambess + - - - Sel Zoo
Matayba elaeagnoides Radlk. + + + + Sei Zoo
Solanaceae Aureliana fasciculata (Vell.) Sendtn. + + - - Pio Zoo
Cestrum corymbosum Schltdl. - + - - Pio Zoo
Solanum sp1 - - + - Pio Zoo
Solanum pseudoquina A. St.Hill - + - - Pio Zoo
Solanum variabile Mart. + + - - Sei Zoo
Styracaceae Styrax leprosus Hook. & Arn. + - + - Sei Zoo
Symplocaceae Symplocos tenuifolia Brand + + - - Sei Zoo
Undetermined Not identified 1 + - - - - -
Not identified 2 + - - - - -
Winteraceae Drimys brasiliensis Miers + - - - Sel Zoo

The regenerating stratum composition of the “Reference” area had 24 species belonging to 19 genera and 12 families, where the Myrtaceae family had highest specific richness (7 spp). Fifteen (15) species were found in the “Restoration” area, distributed into 15 genera and 14 families, in which the Lauraceae family (2 spp.) had the highest specific richness. Considering the floristic composition of soil seed bank, Mimosa scabrella Benth. was the only tree species sampled in both areas.

Most of the evaluated variables were similar between the areas, with the exception of the average values of zoochorous tree abundance (zoo), Shannon index of trees species (H.arb), tree richness (arbR), available potassium (K) and organic carbon (OC), which were higher for the “Reference” area. Only the percentage of clay (cla) was lower in this area ( Table 2 ).

Table 2 Average values of the analyzed variables followed by the mean test, Ponte Alta, SC, Brazil.  

Acronym Variable Reference Restoration p
Mean ± standard deviation
Non-parametric variables (Mann-Whitney U test)
arbA arboreal abundance (n° ind.) 22.6±7.9 20.5±11.6 0.925ns
G basal area arboreal (m2/ha) 31.4±19.5 18.8±10.3 0.143ns
T effective cation exchange capacity (cmolc.dm3)1 5.5±1.6 6.7±1.8 0.196ns
zoo abundance of zoochorous arboreal (%) 63.2±21.4 26.9±16.7 0.003*
Parametric variables (t-test)
H.arb H’ arboreal (nats.ind-1) (Hutcheson t-test) 1.9±0.4 1.4±0.4 <0.001*
cov coverage by Ocellochloa rudis (%) 30.2±29.6 41.1±36.6 0.474ns
pH potential of hydrogen2 3.5±1.1 3.8±0.3 0.366ns
hGra average height of Ocellochloa rudis (cm) 23.5±20.1 40.8±51.3 0.333ns
Mer occupation by Merostachys multiramea (%) 24.5±24.5 30.3±36.1 0.682ns
arbR arboreal richness (n° spp.) 9.3±2.6 6.3±2.7 0.022*
regR regenerating richness (n° spp.) 3.6±3.2 2.4±1.8 0.314ns
regA regenerating abundance (n° ind.) 5.6±6.0 3.1±2.5 0.239ns
can canopy opening (%) 7.4±4.9 23.0±30.1 0.139ns
K available potassium (mg/dm3)3 0.8±0.2 0.4±0.1 <0.001*
Ca exchangeable calcium (cmolc.dm3)4 0.8±0.8 0.4±0.3 0.197ns
Mg exchangeable magnesium (cmolc.dm3)5 1.0±2.1 0.2±0.2 0.246ns
Al exchangeable aluminum (cmolc.dm3) 6 4.5±1.6 5.7±1.9 0.147ns
OC organic carbon (mg/dm3)7 1.5±0.3 1.0±0.2 0.002*
SB saturation by bases (%)8 5.7±3.1 3.4±2.3 0.070ns
OM organic matter (%)9 1.5±0.3 1.8±0.4 0.131ns
pio abundance of pioneer arboreal (%) 26.5±22.8 80.6±26.1 0.691ns
banA seed bank abundance (n° ind.) 0.4±1.0 0.4±0.7 0.930ns
cla clay (%)10 23.1±3.8 28.7±5.5 0.010*

p = probability of the test; ns = not significant; *= significant for α: 0.01. Interpretation of the results according to Tedesco et al. (2004): 1 high; 2 very low; 3 high; 4 low; 5 medium (Reference) and low (Restoration); 6 high; 7 low; 8 very low; 9 low; 10 class 3 (21 - 40% of clay).

The interpretation of the Scree plot graph considered the interpretation from PCA up to PC4 to be safe. PC1 was responsible for explaining 27.5% of the data variation. In this axis, the Shannon index of trees variable (H.arb) is considered significant (loading= -0.31), with the formation of an evident separation between the evaluated areas (p = 0.0009). PC2 had 14% of the total variation of the data, having the following significant variables: pH (loading= -0.33), cov (loading= -0.34) and T ( loading= -0.34).


The “Reference” and “Restoration” areas showed distinct floristic compositions, mainly reflected by the variable Shannon index of the tree community (H.arb). Myrtaceae, which presented greater specific richness for both strata of the “Reference” area, can be characterized as an important source of propagules for the “Restoration” area, as the species of this family present zoochory as an associated dispersion syndrome, enabling greater interaction with the fauna ( Gressler et al., 2006 ), and fundamental for advancement of the successional dynamics and an increase in the environmental richness in secondary succession. In the “Restoration” area, the Lauraceae family presented greater specific richness for the arboreal and regenerating strata, contributing to more advanced succession species such as Cinnamomum glaziovii, and with important species in the initial structuring of the Araucaria Forest such as Ocotea puberula, Nectandra lanceolata, and N. megapotamica. Myrtaceae and Lauraceae are commonly described as formers of this phytophysiognomy, and they can be found in the richest families and in several studies ( Reitz et al., 1978 ; Ferreira et al., 2012 ). Dicksonia sellowiana and Matayba elaeagnoides species are highlighted as they occur in the regenerating and arboreal strata of both areas, being common in both of these ecosystems.

The low representativeness of the species in the composition of the seed bank, confirmed by the restricted presence of Mimosa scabrella in both areas, corroborates the results by Chami et al. (2011) , in which the low diversity of the seed bank is described as an intrinsic ecological characteristic of this phytophysiognomy (Araucaria Forest). However, it can also be attributed to the peculiar microhabitat of riparian ecosystems, which often restricts the presence of trees and shrubs in tropical regions prioritizing herb colonization ( Araujo et al. 2004 ). Another relevant factor is the history of the evaluated site, which reflects the richness and historical diversity of the area's seed bank which may be poor where the vegetation has been suppressed or managed for long periods. In this case, plantations of exotic species carried out in the past in the “Restoration” area may negatively influence the seed bank.

Fragments of the “Reference” area were shown as an important source for successional advancement and maintenance of the “Restoration” environments, because the predominance of zoochory associated with greater richness and diversity of arboreal species in the “Reference” area may be able to promote functional connectivity between the two sites, allowing greater genetic flow through fauna action ( Liebsch & Antonio Acra, 2007 ).

Significant differences among the “Reference” and “Restoration” areas were found for some edaphic variables as being non-relevant according to the interpretations suggested by Tedesco et al. (2004) . Thus, “Reference” and “Restoration” areas had high values of available potassium (K), low organic carbon (OC) and a low percentage of class 3 clay (cla), which commonly characterizes dystrophic soils. Clay is a common characteristic for most soils found in the region of the Santa Catarina plateau ( Morales et al., 2012 ).

According to the principal components analysis (PCA), the separation between the plots of the two areas presented by PC1 shows a clear variation in the floristic-structural composition, predictably occurring along an environmental or successional gradient, as described by Ashton (1989) . This variation presented between the areas is of extreme relevance since there are “gains” in floristics and structure according to the time succession in established forests ( Liebsch et al., 2007 ). Such gains in vegetation richness and structure are important aspects for monitoring areas under passive restoration, since the evaluation of variables such as them have been indicated for monitoring the restoration of biodiverse forests, and monitoring the ecological processes involved (Ruiz-Jáen & Mitchell Aide 2005; Brancalion et al., 2010 ; Rodrigues et al., 2015 ).

PC2 demonstrated a significant correlation of cover by Ocellochloa rudis at sites with higher soil pH and T values. In this axis, a lack of substitution pattern of the sample units in the evaluated areas was observed and when evaluating the ordering vectors, and a slightly larger association was noticed with some portions of the “Restoration” area ( Figure 2 ). The occupation by Ocellochloa rudis (Poaceae) occurred at sites with higher soil pH and T values. However, a gradient with the presence of the species throughout the sampling is not evident. It is considered that grasses are generally able to form a dense biomass layer, making it difficult for sunlight to reach the soil surface, consequently hindering germination and recruitment of native species of the seed bank ( Hughes & Vitousek, 1993 ). This physical barrier can also influence propagules from seed rain reaching the soil ( Miriti, 1998 ).

Figure 2 Distribution of plots (“Reference” and “Restoration” areas) and vegetation and environmental variables, survey conducted in the Araucaria Forest, Poço Grande farm, Ponte Alta - SC, Brazil, according to principal components analysis - PCA. Where: PC1= Principal Component 1 and PC2= Principal Component 2.  

According to the vectors obtained in the PCA analysis ( Figure 2 ), there is a maximum angle formed between the vector coverage by Ocellochloa rudis (cov) with the variables regenerating abundance (arbR) and regenerating richness (regR), suggesting a strong negative association between these variables. Ocellochloa rudis is a native ruderal species, commonly sampled in the vegetation of the Planalto Catarinense region. According to Pastore et al. (2012) , they are part of a group of plants that play an important role in ecological succession considering that they are able to assist in establishing secondary vegetation in degraded areas or clearings due to natural or anthropic impacts. For this reason, we can consider that the species showed an association with more fertile and less acidic soils. However, it is not yet known if this relation is formed by the presence of the species in the site, or if the presence of the species is preferentially due to favorable soil characteristics (higher fertility and lower acidity). Nonetheless, this relationship can establish tree species considering a temporal scale, promoting the arrival of more demanding species regarding the micro-habitat. Moreover, this Poaceae is common both inside the forests as well as on its edges ( Zuloaga & Sendulsky, 1988 ); a fact confirmed in this study as the species did not present an evident relation with canopy opening (can) ( Figure 2 ).


The diversity of the tree community is highlighte among the priority vegetative variables for monitoring areas in passive restoration, followed by the coverage of Ocellochloa rudis (Nees) Zuloaga & Morrone (Poaceae). Regarding the evaluated environmental variables for monitoring passive restoration, they are not representative for the follow-up of successional progression.


The authors are grateful to the State University of Santa Catarina for granting a master's degree scholarship to the first author, to the Foundation for Research and Innovation of the State of Santa Catarina for the assistance, and to Dr. Rafael Trevisan for the identification of PoaceaeOcellochloa rudis(Nees) Zuloaga & Morrone.


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Received: October 06, 2017; Accepted: October 26, 2017

*Lilian Iara Bet Stedille Laboratório de Ecologia Florestal, Programa de Pós-graduação em Engenharia Florestal, Departamento de Engenharia Florestal, Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina – UDESC, Avenida Luiz de Camões, 2090, CEP 88508-640, Lages, SC, Brasil. e-mail:

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