Composition, community structure, and vertical distribution of epiphytic ferns on Cyathea junghuhniana in Gede-Pangrango National Park, Indonesia

Abstract. Hasanah U, Hadisunarso, Praptosuwiryo TN. 2021. Composition, community structure, and vertical distribution of epiphytic ferns on Cyathea junghuhniana in Gede-Pangrango National Park, Indonesia. Biodiversitas 22: 4968-4976. Epiphytic ferns are a significant component of tropical forests worldwide and contribute significantly to the high species diversity found in tropical regions. Tree ferns are important phorophytes for the establishment and occurrence of epiphytic fern species in tropical forests. The first detailed description of the diversity and abundance of epiphytic ferns on the tree fern Cyathea junghuhniana (Kunze) Copel. in a natural forest of Indonesia is provided. This study aimed to determine the species composition, richness, abundance, community structure, and vertical distribution of epiphytic ferns growing on the tree fern C. junghuhniana in the mountain forest of Gede-Pangrango National Park, West Java, Indonesia. The 35 tree fern caudices of at least 3 m height were selected by purposive random sampling. Each tree fern was divided into intervals of 1 meter from ground level to a height of three meters, thus obtaining 105 one-meter samples of the epiphytic fern community on tree fern caudices stratified according to height. The Importance Value Index (IVI) was estimated for each species of epiphyte based on the frequency of occurrence on caudices. The 35 tree fern caudices hosted 760 fern epiphytes belonging to 12 species of 9 genera and 6 families. The highest species richness occurred in Polypodiaceae. The species with the highest Importance Value Index (IVI = 1.24 %) was Nephrolepis davallioides (Sw.) Kunze, with increasing frequency from bottom to top of the caudex.

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Population status of the tree Sacoglottis holdridgei (Humiriaceae) at Isla del Coco National Park, Costa Rica

Revista de Biología Tropical ◽

10.15517/rbt.v64i1.23455 ◽

2016 ◽

Vol 64 (1) ◽

pp. 263

Author(s):

Luis Guillermo Acosta-Vargas

Keyword(s):

National Park ◽

Basal Area ◽

Forest Monitoring ◽

Diameter Distribution ◽

Population Status ◽

Importance Value Index ◽

Importance Value ◽

Data Points ◽

Using Data ◽

Annual Mortality

Isla del Coco is the only oceanic island in the Eastern Pacific with humid tropical climate. Its forests have a particular structure with a unique array of plant species and high endemism. There are few studies on the flora or forest monitoring on the island. The population structure of Sacoglottis holdridgei was analyzed using data from six years with data points taken in 2006 and 2012, including sampling of regeneration in 2012. Sacoglottis holdridgei was the most important tree species, presenting in 2012 the highest Importance Value Index (190.7±21.8), abundance (158.5±40.3 Nha-1 or 39.5 % of the forest) and basal area (15.6 m2ha-1 or 72.9 % of the forest). It was present in all three height strata with dominance in the highest. Annual mortality was reported at 3.3 % and recruitment at 1.2 %. The diameter distribution of forest fits the inverted J model, but not for the reported species of which only S. holdridgei tends to adjust for DBH>40 cm. Regeneration fitted the inverted J model with values below those reported for continental forests. Even though it was the dominant species, S. holdridgei showed low regeneration values. This particular condition, give way hypotheses related to the introduction of species, species biology and climate change which could influence the future development of S. holdridgei and forests of Isla del Coco.<div> </div>

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Reproduction and community structure of fish from winter catch sites from industrial shrimp bycatch from the northeast and southeast Mexican Pacific

PeerJ ◽

10.7717/peerj.4460 ◽

2018 ◽

Vol 6 ◽

pp. e4460

Author(s):

Jorge de Jesus Tirado-Ibarra ◽

Mariany Loya-Rodriguez ◽

Jose Carlos Morales-Arevalo ◽

Isabel Rosario Muñoz-Garcia ◽

Francisco Martinez-Perez ◽

...

Keyword(s):

Community Structure ◽

Fish Species ◽

Fish Diversity ◽

Target Species ◽

Importance Value Index ◽

Importance Value ◽

Mexican Pacific ◽

Shrimp Fishery ◽

Average Size ◽

First Maturity

The shrimp fishery is one of the most important fisheries in the world, although the low selectivity from trawling nets has led to the capture of a large number of non-target species. Shrimp-bycatch species include a large number of fish and invertebrate species, of which fish species are the most abundant. The present study aims to determine the community structure as well as the average sizes at first maturity of the fish species from shrimp-bycatch caught from industrial fisheries in the Mexican Pacific from Sinaloa to Guerrero, from January to March 2015. The shrimp-bycatch fish diversity value was found to be 2.22. A total of 37 species of finfish were found, of which five were considered rare. The fish species with the highest Importance Value Index (IVI) levels were Pseudupeneus grandisquamis, Paralichthys woolmani, Lutjanus peru and Diapterus peruvianus. The average size at first maturity was calculated for all species. Of the analysed organisms, 90% were in the juvenile stage, including species with riverine and artisanal fisheries. The present study demonstrates the risk within marine populations to different non-target species due to the poor selectivity of shrimp trawls.

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The Diversity of Rattan Types at Various Height of Growing Areas in Rompo Village Lore Lindu National Park Area, Central Sulawesi Province, Indonesia

International Journal of Design & Nature and Ecodynamics ◽

10.18280/ijdne.160215 ◽

2021 ◽

Vol 16 (2) ◽

pp. 239-244

Author(s):

Imran Rachman ◽

Adam Malik ◽

Naharuddin Naharuddin ◽

Andi Sahri Alam

Keyword(s):

National Park ◽

Forest Products ◽

Survey Method ◽

Importance Value Index ◽

Importance Value ◽

Non Timber Forest Products ◽

Park Area ◽

Index Value ◽

Central Sulawesi ◽

Lore Lindu National Park

Non-timber forest products were potential assets to generate foreign exchange. Some types of which had good prospects and were in demand in the world of trade were rattan, gondorukem, eucalyptus and cassava. The purpose of this study was to determine the rattan types diversity in Rompo Village, Lore Lindu National Park. The study was conducted in December 2018 to March 2019. This research used the "survey" method by making a plot measuring 20 m x 20 m along to 1000 m. The distance between one track to another was to 200 m. The results showed that the type of Lambang Rattan (Calamus ornatus var celebicus Becc) had the highest density of 563.75 individuals/ha, then Pai Rattan (Calamus koordersianus Becc) 229 individuals/ha, Batang Rattan (Calamus zollingeri Becc) 183 individuals/ha, Ibo Rattan (Calamus ahlidurii) 52 individuals/ha, Rattan Tohiti Botol (Calamus sp) 46.25 individuals/ha, Pute Rattan (Calamus leiocaulis Becc ex. Heyne) 11.75 individuals/ha, Karuku Rattan (Calamus macrosphaerica Becc) 10 individuals/ha and the smallest was the type of Tohiti Wulo Rattan (Calamus sp) 9.75 individuals/ha. Rattan which had the highest Importance Value Index was the Lambang Rattan (Calamus ornatus var celebicus Becc) with an Importance Value Index value of 72.14% while the rattan that had the lowest Importance Value Index was Tohiti Wulo Rattan (Calamus sp) with an INP value of 5.02%. The level of species diversity (H ') of the rattan types found in the research location was classified as moderate with an H value of 1.75. The higher the area where the rattan is grown, the fewer types of rattan that can grow and only small rattan can grow on high ground, especially Tohiti rattan and large rattan cannot be found any more like Lambang rattan.

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Weed population dynamics in rice crops resulting from post-emergent herbicide applications

Revista Facultad Nacional de Agronomía Medellín ◽

10.15446/rfna.v70n1.61762 ◽

2017 ◽

Vol 70 (1) ◽

pp. 8035-8043

Author(s):

Javier Ramírez ◽

Verónica Hoyos ◽

Guido Plaza

Keyword(s):

Population Dynamics ◽

Community Structure ◽

Relative Frequency ◽

Importance Value Index ◽

Importance Value ◽

Weed Population ◽

Weed Communities ◽

Weed Population Dynamics ◽

Importance Index ◽

Before And After

Studies on weed population dynamics are based on observing and recording changes in weed communities in response to effects of disturbances in crop management. The present study aimed to evaluate weed population dynamics in rice crops in Tolima, Colombia, resulting from post-emergent herbicide applications. Sampling was carried out in 0.1% of the cultivated area, marking out a 1 ha area in each commercial lot. Samples were taken before and after post-emergent applications. Evaluated variables were frequency, density, and cover. The data were analyzed using the Importance Value Index (IVI). Results demonstrated that Echinochloa colona was the most important weed of all of the evaluated zones, before and after post-emergent herbicide applications. Other notable species included Digitaria ciliaris, Cyperus iria and Ischaemum rugosum. Relative frequency variable was the most influential on the importance index of the species. Furthermore, herbicide applications generated changes in the community structure in the evaluated zones and in each evaluation.

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Komposisi Jenis, Struktur Komunitas, dan Keanekaragaman Mangrove Asosiasi Langge Kabupaten Gorontalo Utara-Provinsi Gorontalo

Jurnal Ilmu Lingkungan ◽

10.14710/jil.17.1.181-188 ◽

2019 ◽

Vol 17 (1) ◽

pp. 181

Author(s):

Sukirman Rahim ◽

Dewi Wahyuni K Baderan

Keyword(s):

Community Structure ◽

Species Diversity ◽

Relative Density ◽

Relative Frequency ◽

Diversity Index ◽

Mangrove Forests ◽

Chromolaena Odorata ◽

Importance Value Index ◽

Importance Value ◽

Nypa Fruticans

Hutan mangrove Langge yang terdapat di Kecamatan Anggrek Kabupaten Gorontalo Utara memiliki keunikan dari pola zonasi dan keanekaragaman jenis. Hal ini yang menjadikan hutan mangrove di kawasan tersebut sebagai objek wisata tracking mangrove yang dikenal dengan nama “mangrove in love. Hutan mangrove memiliki berbagai fungsi ekologis yang sangat kompleks yakni sebagai daerah pemijahan (spawing ground), tempat asuhan (nursery ground), dan tempat mencari makan (feeding ground) biota laut yang beraneka jenis dan memiliki fungsi ekonomis diantaranya buah mangrove dapat diolah menjadi berbagai produk kue dan sumber pangan alternatif pengganti beras. Penelitian ini bertujuan untuk : 1) untuk mengetahui komposisi jenis mangrove asosiasi; 2) untuk mengetahui struktur komunitas dari hutan mangrove Langge; dan 3) nilai Indeks Keanekaragaman. Adapun metode yang digunakan dalam penelitian ini adalah metode jalur berpetak (kombinasi plot dan transek). Jumlah spesies yang ditemukan akan dilihat untuk menjadi dasar penentuan komposisi jenis. Untuk pengkuran struktur komunitas mangrove dengan melakukan perhitungan terhadap Kerapatan Relatif (KR) dan Frekuensi Relatif (FR). Selanjutnya data yang didapatkan ditabulasikan untuk memperoleh nilai Indeks Nilai Penting (INP). Perhitungan keanekaragaman jenis menggunakan rumus (Sannon-wienner). Hasil penelitian menemukan 12 spesies tumbuhan mangrove asosiasi yakni Acanthus spinosus, Chromolaena odorata, Crassocephalum sp, Calotropis gigantean, Ipomea pes-caprae, Ricinus communis Excoecaria agallocha, Scaevola taccada, Spinifex littoreus, Terminalia catappa, Derris trifoliate dan Nypa fruticans. Struktur komunitas menunjukkan Chromolaena odorata memiliki nilai INP sebesar 33,2%, Kerapatan Relatif sebesar 24,91%, dan Frekuensi Relatif sebesar 8,33%. Spesies dengan nilai INP terendah dimiliki oleh Nypa fruticans yaitu sebesar 9,14%, Kerapatan Relatif sebesar 0,81%, dan Frekuensi Relatif sebesar 8,33%. Nilai Indeks Keanekaragaman (H’) mangrove asosiasi sebesar 2,175 dan termasuk dalam kriteria tingkat keanekaragaman sedang. Data yang diperoleh ini dapat digunakan dalam pengelolaan hutan mangrove di Gorontalo Utara serta dapat menjadi database dalam usaha konservasi mangrove guna mengurangi efek pemanasan global.Langge mangrove forest located in the District of North Gorontalo District Orchid has a uniqueness of zoning patterns and keanekragaman types. This is what makes the mangrove forests in the region as a tourist attraction tracking mangrove known as the "mangrove in love. Mangrove forests have a variety of ecological functions is very complex which is a spawning area (spawing ground), point of care (nursery grounds), and foraging (feeding ground) various types of marine life and has the economic function of which pieces of mangrove can be processed into various products cake and alternative food sources instead of rice. This study aims to: 1) to determine the association of mangrove species composition; 2) to determine the community structure of mangrove forests Langge; and 3) the value of diversity index. The method used in this study is a terraced path method (combination of plots and transects). The composition of the types of views based on the number of species found. For sizing mangrove community structure by calculating the Relative Density (KR) and Relative Frequency (FR). Then the data obtained are tabulated to get the value of Importance Value Index (IVI). Calculation of species diversity using the formula (Sannon-wienner). The study found an association of twelve species of mangrove plants and the relative dominance (DR), then the data obtained are tabulated to get the value of Importance Value Index (IVI). Calculation of species diversity using the formula (Sannon-wienner). The study found an association of eight species of mangrove plants and the relative dominance (DR), then the data obtained are tabulated to get the value of Importance Value Index (IVI). Calculation of species diversity using the formula (Sannon-wienner). The study found an association of twelve species of mangrove plantsnamely Acanthus spinosus, Chromolaena odorata, Crassocephalum sp, Calotropis gigantean, Ipomea pes-caprae, Ricinus communis Excoecaria agallocha, Scaevola taccada, Spinifex littoreus, Terminalia catappa, Derris trifoliate dan Nypa fruticans. Community structure showed Chromolaena odorata has a value of IVI of 33,2%, amounting to 24,91% Relative Density and Relative Frequency of 8,33%. The species with the lowest IVI owned by Nypa fruticans that is equal to 9,14%, 0,81% Relative Density and Relative Frequency of 8,33%. Values Diversity Index (H ') at 2.175 and mangrove associates included in the criteria for a medium level of diversity. The data obtained can be used in the management of mangrove forests in North Gorontalo and can be a database of mangrove conservation efforts to reduce the effects of global warming.

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Invasive Alien Species Plants in Sukaraja Atas Resort, Bukit Barisan Selatan National Park

Jurnal Sylva Lestari ◽

10.23960/jsl18109-120 ◽

2020 ◽

Vol 8 (1) ◽

pp. 109

Author(s):

Agus Sayfulloh ◽

Melya Riniarti ◽

Trio Santoso

Keyword(s):

Alien Species ◽

Native Species ◽

National Park ◽

Invasive Alien Species ◽

Imperata Cylindrica ◽

Calliandra Calothyrsus ◽

Importance Value Index ◽

Importance Value ◽

Open Land ◽

Negative Impacts

One of the problems encountered by the Bukit Barisan Selatan National Park (TNBBS) is the presence of invasive alien species. Invasive alien species are plants that grow outside their natural distribution and have the ability to cover the area; hence it could suppress the growth of the other plants. The presence of invasive alien species in the national park has been widely reported to cause negative impacts on the ecosystem, local biodiversity, socio-economic, and human health in the vicinity. This study was carried out in the rehabilitation zone of the Sukaraja Atas Resort of TNBBS that had shifted into open land. This study aimed to determine the species and dominance of invasive alien species that exist. The sampling method was used by laying plots consisted of the combination of the line and multiple plot methods with a total plot of 25 plots. Data analysis was performed by selecting invasive alien species observed based related-literature, while the dominance of invasive alien species was calculated by the importance value index (IVI). The results identified 121 species, of which 29 species or 35% of them were classified as invasive alien, which originating from 19 families. Three invasive alien species become the most dominating, namely: Clidemia hirta with an IVI of 22.61, Imperata cylindrica with an IVI of 18.03, and Calliandra calothyrsus with an IVI 17.96. The environmental conditions and species characteristics supported the three invasive alien species domination; hence it inhibited the growth of native species. Keywords: Bukit Barisan Selatan National Park, invasive alien species, rehabilitation zone

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Population structure, vegetation composition and economic potentials of Parkia timoriana in Meru Betiri National Park, East Java, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d210126 ◽

2019 ◽

Vol 21 (1) ◽

Cited By ~ 2

Author(s):

Anik Nur Hidayati ◽

ERVIZAL A.M. ZUHUD ◽

NURI ANDARWULAN

Keyword(s):

Population Structure ◽

National Park ◽

Local Community ◽

Economic Potential ◽

Vegetation Composition ◽

Importance Value Index ◽

Importance Value ◽

Economic Values ◽

Conservation Values ◽

Study Sites

Abstract. Hidayati AN, Zuhud EAM, Andarwulan N. 2020. Population structure, vegetation composition and economic potentials of Parkia timoriana in Meru Betiri National Park, East Java, Indonesia. Biodiversitas 21: 203-210. Kedawung (Parkia timoriana (DC.) Merr.) is one of rare medicinal plant species because it is only found in a small part of Indonesia. P. timoriana has high ecological and economic potential because it contains various active compounds such as anticancer. This study was aimed to investigate the population structure, vegetation community composition, and distribution, as well as the potential production and economic values of P. timoriana in rehabilitation zone in Meru Betiri National Park, East Java, Indonesia. The methods used were vegetation analysis, direct observation, and in-depth interviews with selected respondents using purposive sampling. We found that P. timoriana population at the study sites was only at tree and pole stages, while no sapling and seedling was found. This condition implies that regeneration of P. timoriana at the study sites was not happening which can threaten its sustainability in the future. P. timoriana dominated the vegetation at the studied sites which were indicated by the highest importance value index. Utilization of P. timoriana by the local community was by selling the seeds to medicinal industries or used as herbal medicine. While having conservation values, the management of P. timoriana stands in Andongrejo Resort also had the potential to generate economic values up to 17.6 billion rupiahs. Considering the great economic potential of P. timoriana and to ensure sustainability, so that nursery, breeding and regeneration of P. timoriana should be made in order to obtain the best quality seeds.

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Reproduction and community structure of fish from winter shrimp bycatch from the Southeast Gulf of California

10.7287/peerj.preprints.3274v1 ◽

2017 ◽

Author(s):

Jorge de Jesus Tirado-Ibarra ◽

Mariany Loya-Rodriguez ◽

Jose Carlos Morales-Arevalo ◽

Isabel Rosario Muñoz-Garcia ◽

Jorge Saul Ramirez-Perez ◽

...

Keyword(s):

Community Structure ◽

Fish Species ◽

Gulf Of California ◽

Target Species ◽

Importance Value Index ◽

Importance Value ◽

Shrimp Fishery ◽

Average Size ◽

First Maturity ◽

Size At First Maturity

Shrimp fishery is one of the most important fisheries of the world. However, the low selectivity from trawl nets leads the capture of a large number of non-target species. Shrimp bycatch include a large number of fish and invertebrate species; of which fish species are the most abundant. The present study aims to determine the community structure as well as the average sizes at first maturity of the fish species from shrimp bycatch caught from industrial fisheries at the southeast of the Gulf of California from Sinaloa to Guerrero, Mexico; from January to March 2015. A total of 37 species of finfish were found; of which five were considered rare. The fish species with the highest Importance Value Index (IVI) were Pseudupeneus grandisquamis, Paralichthys woolmani, Lutjanus peru y Diapterus peruvianus. The average size at first maturity of 12 fish species was determined; nine of which have not been previously reported. Of the analyzed organisms 90% were in juvenile stage; including species with riverine and artisanal fisheries. The present study demonstrates the risk in marine populations of different non-target species due to the low selectivity of shrimp trawls.

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Natural regeneration potential of Madhupur National Park, Bangladesh

Bangladesh Journal of Botany ◽

10.3329/bjb.v49i4.52515 ◽

2020 ◽

Vol 49 (4) ◽

pp. 989-996

Author(s):

Md Rayhanur Rahman ◽

MK Hossain ◽

Md Akhter Hossain ◽

Mohammad Emran Hasan

Keyword(s):

Tree Species ◽

Natural Regeneration ◽

National Park ◽

Alien Invasive Species ◽

Importance Value Index ◽

Importance Value ◽

Height Range ◽

Shorea Robusta ◽

Extensive Collection ◽

Litsea Glutinosa

Natural regeneration is an essential tool to evaluate the overall health of a forest ecosystem. Natural regeneration of the tree species in Madhupur National Park showed 47 regenerating tree species among which Shorea robusta has maximum density (18,046 seedlings per ha) followed by Aporosa sp., whereas minimum density (19 seedling per ha) was recorded for Cassia nodosa, Litsea glutinosa, Grewia asiatica and Syzygium cumini, respectively. Relative density, relative frequency and relative abundance were estimated to assess the Importance Value Index (IVI) of the seedlings of different tree species. IVI of S. robusta was highest (66.25 out of 300) followed by Mallotus philippensis (27.33). G. asiatica, Derris robusta, and L. glutinosa showed the lowest IVI (0.93) among the regenerating tree species. Distribution of seedlings into different height classes showed that maximum number (31.4%) of seedlings in the height range of 50 - <100 cm. Among the recorded seedlings, Protium serratum showed maximum (11%) recruitment success. Alien invasive species, pineapple and banana based participatory agroforestry, frequent occurrence of fire, extensive collection of fuelwood and litter are the potential threats to the natural regeneration of Madhupur National Park.

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SOBREVIVENCIA Y CRECIMIENTO DE PLÁNTULAS DE TRES ESPECIES ARBÓREAS EN ÁREAS DE BOSQUE MONTANO ANDINO DEGRADADAS POR GANADERÍA EN COLOMBIA

Acta Biológica Colombiana ◽

10.15446/abc.v20n2.46057 ◽

2014 ◽

Vol 20 (2) ◽

Author(s):

Deisy Johanna Moreno-Betancur ◽

Sandra Eugenia Cuartas Hernández

Keyword(s):

Ecological Restoration ◽

Seedling Survival ◽

Light Availability ◽

Mountain Forest ◽

Monthly Precipitation ◽

Importance Value Index ◽

Importance Value ◽

Drought Period ◽

Successful Establishment ◽

Quercus Humboldtii

En la Región Lechera del centro de Antioquia el paisaje ha sido ampliamente transformado de bosques montanos a pastizales para pastoreo de ganado vacuno, siendo la restauración del paisaje en esta zona una acción primordial que debe ser incorporada en el plan de uso de la tierra. El objetivo general de este estudio fue seleccionar tres especies arbóreas que promuevan el proceso de regeneración de bosques montanos y evaluar el efecto de diferentes estrategias de siembra sobre el establecimiento de las plántulas. Se consideró el efecto del tipo de fertilización, combinación de especies, disponibilidad lumínica y niveles de precipitación sobre la sobrevivencia y crecimiento de las plántulas. Quercus humboldtii, Weinmannia pubescens y Myrsine coriacea fueron las especies seleccionadas por presentar alto índice de valor de importancia ecológica y alta disponibilidad de semillas. La fertilización orgánica favoreció la sobrevivencia de las tres especies evaluadas y el crecimiento para W. pubescens. La combinación de especies no afectó la tasa de crecimiento pero si la sobrevivencia. Se detectó también mayor sobrevivencia en las plántulas de las tres especies que recibieron sombra en algún momento del día; al contrario, disminuyó en la época de sequía. El éxito en el establecimiento de Q. humboldtii, la tolerancia de W. pubescens a las heladas y la dispersión de semillas de M. coriacea por aves son características que en conjunto convierten a estas especies en promisoras para procesos de restauración ecológica en áreas de bosque montano.ABSTRACTMountain forest landscapes of the central region of Antioquia department (Colombia) have been largely transformed into pastures; therefore, ecological restoration must be included as a primordial strategy. The aim of this study was the selection of three tree species that help to improve natural regeneration of mountain forest and to evaluate the effect of different sowing strategies on the seedling`s establishment. We assessed the effect of fertilization type, combination of species, light availability and monthly precipitation on seedling survival and growth. Myrsine coriacea, Quercus humboldtii, and Weinmannia pubescens were selected on the basis of high importance value index and high seed availability. Survival of the three species was higher when seedlings were fertilized with organic matter. Also, growth was higher for W. pubescens. The combination of species had no effect on the growth rate of the three species, but it affected negatively the survival of Q. humboldtii and W. pubescens growing with M. coriacea. Survival was higher for seedlings of W. pubescens and M. coriacea out of the sun at some moment during the day. Also, survival diminished during drought period. Successful establishment of Q. humboldtii and tolerance of W. pubescens to frost and regrowth after freeze period and seed dispersal of M. coriacea by birds constitute a set of characteristics that make of these species promissory in the ecological restoration process in degraded mountain forest areas.

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