scholarly journals Structure, Composition and Diversity of Tree Species at Inobonto Poigar I Production Forest, Forest Management Unit of Poigar, North Sulawesi

Jurnal Wasian ◽  
2016 ◽  
Vol 3 (1) ◽  
pp. 45
Author(s):  
Nurlita Indah Wahyuni ◽  
Hendra Susanto Mokodompit
Keyword(s):  
Forest Management ◽  
Tree Species ◽  
Secondary Forest ◽  
Basal Area ◽  
Wiener Index ◽  
Management Unit ◽  
Primary Forest ◽  
Composition Analysis ◽  
North Sulawesi ◽  
Shaped Pattern

Most of primary forest after exploitation era in Indonesia was converted into secondary forest including Forest Management Unit of Poigar. On the other hand the understanding of forest vegetation will help ecology restoration efforts. This study aims to analyze the structure, composition and tree species diversity of Inobonto Poigar I. In order to accomplish the proposed objectives, 31 plots of 20 m x 20 m were randomly established in the forest area where number and name of tree species in each plot was identified and counted. The research was conducted on September 2014 and recorded a total of 78 species within measured plot. The average basal area of the forest was 16,77 m2/ha and the size class distribution was different from primary forest which is resembled a reserved J-shaped pattern. Trema orientalis was found as the dominant species among tree and pole levels, whereas Piper sp. dominated sapling level respectively. The Shannon-Wiener index showed that sapling has the higher diversity than tree and poles. The result of structure and composition analysis of vegetation has indicated that Inobonto I forest is secondary forest.

scholarly journals Integrated Analysis of Forest Policies and Their Impacts on Landscape and Lifescape Dynamics: A Case Study in The Walanae Forest Management Unit, Indonesia

2018 ◽  
Vol 11 (3) ◽  
pp. 155-174 ◽  
Author(s):  
◽  
Darmawan Salman ◽  
Yusran Yusran ◽  
Muhammad Alif K. Sahide ◽  
Keyword(s):  
Land Use ◽  
Forest Management ◽  
Secondary Forest ◽  
Quantitative Description ◽  
Management Unit ◽  
Forest Composition ◽  
Primary Forest ◽  
Integrated Analysis ◽  
The Past ◽  
Forest Policies

Abstract In the past few decades, forest policies have caused changes in forest landscape and community lifescape in the study area of Walanae Forest Management Unit (KPH Walanae), South Sulawesi Province. This research aims to analyze forest policy dynamics and their impacts on landscape and lifescape dynamics. We quantify landscape dynamics using land use and land cover change and landscape metrics in interpreting remote sensing results of four data sets obtained in 1990, 2000, 2009, and 2016. Furthermore, we investigate lifescape dynamics using qualitative/quantitative description. We found a rapid land use change in forest landscapes within the past 26 years. A significant change showed that, in 1990–2000, the primary forest that changed into the secondary forest and shrubs has changed into dry land agriculture mix shrubs. The decreased area of the forest brought an increase in economic income for people on one side and large disturbances and forest fragmentation on the other. Various forest policies influenced the forest composition and cover but were insufficiently successful in protecting the natural forest. Results showed that several forest policies that considerably impact the landscape and lifescape conditions include forest land designation, industrial forest plantation, and restoration activities. The policies on establishing KPH and social forest program have not shown the maximum result on the landscape and lifescape improvements and, therefore, must be supported.

scholarly journals Successional age and forest structure in a Costa Rican upper montane Quercus forest

1996 ◽  
Vol 12 (5) ◽  
pp. 681-698 ◽  
Author(s):  
Maarten Kappelle ◽  
Thorwald Geuze ◽  
Miguel E. Leal ◽  
Antoine M. Cleef
Keyword(s):  
Tree Species ◽  
Secondary Forest ◽  
Basal Area ◽  
Diversity Indices ◽  
Costa Rican ◽  
Canopy Height ◽  
Primary Forest ◽  
Stem Density ◽  
Neotropical Forests ◽  
Structural Recovery

ABSTRACTChanges in structure of a Costa Rican upper montane Quercus forest were studied in twelve 0.1 ha plots along a chronosequence including 8- to 20-year-old Early Secondary Forest (ESF), 25- to 32-year-old Late Secondary Forest (LSF) and mature Primary Forest (PF). In 1.2 ha 2854 stems ≥ 3.0 cm dbh belonging to 42 tree species were recorded. Tree species richness per 0.1 ha ranged from 15 to 30. Diversity indices did not change significantly during succession. Stem density did not differ significantly among successional phases, while basal area was significantly higher in PF than in ESF and LSF. Maximum canopy height and basal area increased linearly during the first three decades of recovery. Height and dbh showed a significant, logarithmic regression for all forest phases. A period of 84 y was estimated as the theoretically minimum time needed for structural recovery. The maximum canopy height and basal area recovered two to five times slower in upper montane than in lower montane or lowland Neotropical forests.

Effects of tree species heterogeneity on leaf fall in primary and logged dipterocarp forest in the Ulu Segama Forest Reserve, Sabah, Malaysia

1994 ◽  
Vol 10 (1) ◽  
pp. 1-26 ◽  
Author(s):  
T. B. A. Burghouts ◽  
E. J. F. Campbell ◽  
P. J. Kolderman
Keyword(s):  
Tree Species ◽  
Basal Area ◽  
Primary Forest ◽  
Forest Plot ◽  
Pioneer Species ◽  
Leaf Fall ◽  
Forest Reserve ◽  
Dipterocarp Forest ◽  
Canopy Trees ◽  
Logged Forest

ABSTRACTEffects of tree species heterogeneity on leaf fall were studied in a primary (4 ha) and in a selectively logged forest plot (2.5 ha) in the Ulu Segama Forest Reserve, Sabah, Malaysia, from April 1988 to December 1989. Leaf fall was collected at 30 sampling points in each plot, and identified to species.Dipterocarpaceae, Euphorbiaceae, Lauraceae, Fagaceae and Meliaceae are important tree families in both plots with regard to their contribution to total basal area, tree density and annual leaf fall. The total number of tree species was higher in the primary forest plot (267) than in the logged forest plot (218), although the number of climber species was higher in the logged forest (44) than in the primary forest plot (33). The overlap in species composition between the two forest plots was relatively small (49%) compared with that in family composition (88%).In the primary forest plot, the Dipterocarpaceae contributed 29% of the total basal area and 34% of the annual leaf fall. In the logged forest plot these contributions were much lower, 11% and 15%. The contribution to annual leaf fall made by climbers and pioneer trees was higher in the logged forest plot (34%) than in the primary forest plot (8%).In the primary forest plot, leaf fall was dominated My large emergent and main canopy trees, mainly dipterocarps, and occurred as regular large peaks. In the logged forest leaf fall was dominated by climbers and many, relatively small trees of pioneer species, such as Macaranga hypoleuca, and was more evenly distributed in time.

scholarly journals Floristic and structure of the arboral community of a regenerating fragment of Atlantic Forest, Igarassu, Pernambuco, Brazil

2018 ◽  
Vol 12 (2) ◽  
pp. 145
Author(s):  
Andréa Vasconcelos Freitas Pinto ◽  
Maria Amanda Menezes Silva ◽  
Ana Virginia De Lima Leite ◽  
Ladivania Medeiros Do Nascimento ◽  
Ana Carolina Borges Lins-e-Silva ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Secondary Forest ◽  
Basal Area ◽  
Floristic Composition ◽  
Pollination Syndrome ◽  
Composition Analysis ◽  
Forest Fragment ◽  
Species Dispersal ◽  
Structure Dispersion ◽  
Effective Use

Understanding secondary forest structure and functioning is essential for future planning of effective use and/or recompositioning of such areas. The secondary succession process is influenced by the characteristics of componente species, their interaction with other species and with abiotic components. Thus, the objective of the current study was to evaluate the vegetation structure, dispersion syndromes and pollination of a secondary forest fragment with 5 years of regeneration in the Atlantic Forest landscape of Pernambuco, northern Brazil. A total of 30 permanent 10 x 10 m plots with 10 m separations were used for canopy sampling (i.e., all woody individuals with stem diameter at 1.30 m (DBH) greater than 5 cm. Floristic composition analysis recorded 32 species from 21 families. Absolute density was 150 individuals with basal area of 4.787 m² ha-1, and the Shannon-Weaver index (H ‘) was 2.960. The family with the highest number of species was Melastomataceae, while those with greatest abundance were Malpighiaceae (26) and Cecropiaceae (14). Species with the highest Importance Values included Byrsonima sericea (49.28%), Cecropia pachystachya (38.49%) and Bowdichia virgilioides (37.19%). The predominant tree species dispersal syndrome was zoochory (72 species), and the predominant pollination syndrome was melitophilia. Arboreal individuals were mostly recorded in the initial diameter and height classes, indicating that the study area is in the initial stage of succession.

scholarly journals Distribusi Dan Diversitas Serangga Tanah Di Taman Hutan Raya Gunung Tumpa Sulawesi Utara

Jurnal MIPA ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 36 ◽  
Author(s):  
Mailani Basna ◽  
Roni Koneri ◽  
Adelfia Papu
Keyword(s):  
Secondary Forest ◽  
Diversity Index ◽  
Chemical Properties ◽  
Pitfall Trap ◽  
Primary Forest ◽  
North Sulawesi ◽  
Physical Chemical ◽  
Insect Distribution ◽  
Soil Insects ◽  
Positive Effect

Serangga tanah merupakan jenis dari serangga yang seluruh atau sebagian hidupnya berada di tanah. Serangga tanah berperan penting dalam ekosistem yaitu membantu proses pelapukan bahan organik dan keberadaan serta aktivitasnya berpengaruh positif terhadap sifat kimia fisik tanah. Penelitian ini bertujuan untuk mengkaji distribusi dan diversitas serangga tanah di Gunung Tumpa, Sulawesi Utara. Lokasi pengambilan sampel terdiri dari tiga tipe habitat yaitu, hutan primer, hutan sekunder dan lahan perkebunan. Teknik pengambilan sampel menggunakan perangkap sumuran (Pitfall trap). Hasil penelitian  ditemukan serangga tanah sebanyak 10 ordo, 23 famili, 28 genus, 33 morfospesies dan 21100 individu.  Ordo Hymenoptera didominasi oleh famili Formicidae. Pola distribusi serangga tanah di Gunung Tumpa berkelompok. Indeks diversitas spesies di Gunung Tumpa tergolong sedang (H = 2,62). Kelimpahan spesies dan indeks diversitas spesies serangga tanah tertinggi ditemukan pada hutan primer, sedangkan yang terendah pada lahan perkebunan dan hutan sekunder.Soil Insects is a type of insect that all or part of his life was on the ground. Soil insects plays an important role in the ecosystem that is helping the process of weathering and the presence of organic matter as well as its activities towards the positive effect of physical chemical properties of the soil. This research aims to identify, examine the distribution and diversity of insects land on Mount Tumpa, North Sulawesi. Location of sampling consists of three types of habitat i.e., primary forest, secondary forest and plantations. The technique of sampling using Pitfall trap. Results of the study found as many as 10 soil insect orders, 23 families, 28 genera, 33 morfospesies and 21100 individuals. The order of Hymenoptera is dominated by the Formicidae. The pattern of soil insect distribution in Gunung Tumpa is clumped. Index of species diversity in Mt. Tumpa belongs to moderate (H = 2.62). The highest abudance and diversity index of soil insect species were found in primary forest, while the lowest was on plantation and secondary forest.

Distribution of primary forest plant species in a 19-year old secondary forest in French Guiana

1998 ◽  
Vol 14 (3) ◽  
pp. 323-340 ◽  
Author(s):  
D. TORIOLA ◽  
P. CHAREYRE ◽  
A. BUTTLER
Keyword(s):  
Distribution Pattern ◽  
Tree Species ◽  
French Guiana ◽  
Forest Canopy ◽  
Secondary Forest ◽  
Primary Forest ◽  
Pioneer Species ◽  
Forest Species ◽  
Mature Forest ◽  
Height Class

Secondary succession in a 19-y old tropical rainforest of French Guiana was investigated through the distribution pattern of primary forest species. The experimental plot of 25 ha was logged to simulate conditions of a paper pulp cut. Enumeration of all plants of height ≥ 50 cm in 52 subplots 10 m × 10 m indicated the number of species and individuals in five species categories; short-lived pioneer species, pioneer species that persist in mature forest, primary forest species capable of germinating in shade, primary forest species that indicate a preference for clearings (small gaps) in mature forest and understorey primary forest species. Change in proportion of the most abundant species (≥ 1 cm dbh) over the last 15 y indicated a decrease in short-lived pioneer species and an increase in pioneers that can persist in the mature forest. Proportion of species categories per height class indicated that primary forest species were mainly found in the lower height class in this forest which is largely dominated by secondary forest tree species forming a canopy that rarely exceeds 20 m. Individuals of primary forest species were encountered on ARBOCEL as sprouts from large stumps, sprouts from juveniles or as untraumatised saplings or juveniles. The distribution pattern in a 4-ha area of 11 selected primary forest canopy tree species revealed an overall trend in recolonisation of this species category in the secondary forest. Considered individually, the clustered distribution of stems of Eperua grandiflora showed the importance of regeneration through sprouting or remaining individuals. The gradient distribution, oriented from the edge to the centre of the studied plot, and displayed by the stem densities of Virola michelii, suggested a recent progressive dispersal of seeds. A more dynamic recolonisation front was observed for the primary forest understorey species Cassipourea guianensis and was probably linked to both the initial logging conditions and the fact that this species fruits when relatively young.

Secondary forest succession in a tropical dry forest: patterns of development across a 50-year chronosequence in lowland Bolivia

2002 ◽  
Vol 18 (1) ◽  
pp. 53-66 ◽  
Author(s):  
DEBORAH K. KENNARD
Keyword(s):  
Species Richness ◽  
Tree Species ◽  
Stand Structure ◽  
Secondary Forest ◽  
Tropical Dry Forest ◽  
Basal Area ◽  
Forest Stand ◽  
Dry Forest ◽  
Stem Density ◽  
Mature Forest

Stand structure, species richness and population structures of tree species were characterized in 12 stands representing 50 y of succession following slash-and-burn agriculture in a tropical dry forest in lowland Bolivia. Estimates of tree species richness, canopy cover and basal area reached or surpassed 75% of mature forest levels in the 5-, 8-, and 23-y-old stands respectively. Total stem density of the 50-y-old stand was almost twice that of the mature forest stand. This rapid recovery may be due to a high percentage of sprouting tree species, potentially high seed fall into abandoned fields, or the disturbance history of the mature stand. The even-aged size-class structures, dominance of long-lived pioneers, and presence of charcoal and pottery shards in soils of the mature forest stand suggest it formed after a severe disturbance, possibly fire of anthropogenic origin.

scholarly journals Inventarisasi Jenis Pohon Pada Cagar Alam Gunung Ambang, Sulawesi Utara

Jurnal MIPA ◽  
2015 ◽  
Vol 4 (2) ◽  
pp. 115
Author(s):  
Akbar Arafah Embo ◽  
Roni Koneri ◽  
Saroyo . ◽  
Adelfia Papu
Keyword(s):  
Life Support ◽  
Secondary Forest ◽  
Primary Forest ◽  
Line Transect ◽  
Sampling Point ◽  
Secondary Forests ◽  
North Sulawesi ◽  
The People ◽  
Family Types

Pohon sebagai penyusun utama kawasan hutan berperan penting dalam pengaturan tata air, cadangan plasma nutfah, penyangga kehidupan, sumber daya pembangunan dan sumber devisa Negara. Peranan pohon-pohon dalam komunitas hutan semakin sulit dipertahankan mengingat tekanan masyarakat terhadap kelompok tumbuhan dari waktu ke waktu terus meningkat.Penelitian ini bertujuan untuk mengkaji jenis-jenis pohon yang berada di kawasan Cagar Alam Gunung Ambang, Sulawesi Utara. Metode penelitian yang digunakan yaitu metode garis berpetak yang merupakan modifiksi dari metode petak atau plot ganda dan metode jalur. Tipe habitat yang dijadikan titik pengambilan sampel adalah hutan primer dan hutan sekunder. Hasil pengamatan diperoleh sebanyak 38 jenis pohon penyusun hutan di Gunung Ambang yang termasuk dalam 22 suku. Pada hutan primer disusun oleh 37 jenis dan 22 suku, sedangkan pada hutan sekunder terdiri dari 28 jenis yang termasuk dalam 18 suku. Jenis pohon yang mendominasi setiap lokasi penelitian yaitu suku Magnoliaceae dan Arecaceae.Tree as the main constituent of forests play an important role in water regulation, germplasm reserves, life support, development resources and the country's foreign exchange resources. The role of trees in the forest communities are difficult to be sustained because the people pressure increase on the trees day by day. This study aims to assess the types of trees that are in the nature reserve area of ​​Gunung Ambang, North Sulawesi. The method used is the line transect plots that is modified  from the plot method or a double plot and track method. The type of habitat that is used as the starting sampling point is the  primary forests and secondary forests. Result of observations showed that Gunung Ambang is composed by 38 species of plant in 22 family. In the primary forest composed by 37 species and 22 Family, whereas in secondary forest consists of 28 species in 18 family. Types of trees that dominate each research location are Family Magnoliaceae and  Family Arecaceae.

scholarly journals The Claims and the Use of Land by Local Communities and by the FMU of 50 Kota District in Jorong Landai, Nagari Harau, 50 Kota District, West Sumatra, Indonesia

2020 ◽  
Vol 1 (2) ◽  
pp. 111-121
Author(s):  
Uswatul Hasana ◽  
Mahdi ◽  
Wilson Novarino ◽  
Farid Azel
Keyword(s):  
Forest Management ◽  
Qualitative Method ◽  
Secondary Forest ◽  
Local Communities ◽  
Primary Forest ◽  
Community Members ◽  
Protection Forest ◽  
West Sumatra ◽  
Management Plans ◽  
The Government

Forest Management Unit (FMU) of 50 Kota district, whose appointment by the Decree of the Minister of Forestry No. 44 / Menhut-II / 2012 on February 2, located in the 50 Kota district of West Sumatra Province, Indonesia with wide ± 117 552 ha. FMU of 50 Kota district try to make some forest management plans in certain areas such as the development for forest conservation function, production function and protected function. Local communities in 50 Kota district, some of them still dependent on the forest, and Location FMU of 50 Kota district is in the West Sumatera, that famous with the Minangkabau people with their long-existing village management system, known as Nagari. The Nagari established, to settle disputes based on customary principles as well as to protect the rights of the community members. These rights include communal land (ulayat land). In this study, has identification and attempts to describe the claims and the use of land in Jorong Landai, Nagari Harau, 50 Kota District, West Sumatra, by local communities and FMU of 50 Kota District. This research uses the descriptive qualitative method. In the Jorong Landai with a total area of 1388 Ha with each has ulayat area as follows: Bodi: 344 Ha, Pitopang 477 Ha, Sambilan 135 Ha and Melayu 427 Ha. The clan has used the ulayat land of 198,02 Ha for settlement, rice field, and gambir fields. The new boundaries for the area protected forest in Jorong Landai make overlapping claims of 57,01 Ha. Overlapping claims land use makes the activities local communities like blocked in their own land by the government. The primary forest in Jorong Landai of 1051 Ha (267 Ha in APL/Ulayat land and 784 Ha in protection forest). Secondary forest of 63,6 Ha (in APL/Ulayat land of 56,5 Ha and 7,1 Ha in protection forest).

scholarly journals Tree Species Diversity, Richness, and Similarity in Intact and Degraded Forest in the Tropical Rainforest of the Congo Basin: Case of the Forest of Likouala in the Republic of Congo

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Suspense Averti Ifo ◽  
Jean-Marie Moutsambote ◽  
Félix Koubouana ◽  
Joseph Yoka ◽  
Saint Fédriche Ndzai ◽  
...  
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Secondary Forest ◽  
Diversity Index ◽  
Shannon Index ◽  
Congo Basin ◽  
Primary Forest ◽  
Species Structure ◽  
Republic Of Congo ◽  
The Republic

Trees species diversity, richness, and similarity were studied in fifteen plots of the tropical rainforests in the northeast of the Republic of Congo, based on trees inventories conducted on fifteen 0.25 ha plots installed along different types of forests developed on terra firma, seasonally flooded, and on flooded terra. In all of the plots installed, all trees with diameter at breast height, DBH ≥ 5 cm, were measured. The Shannon diversity index, species richness, equitability, and species dominance were computed to see the variation in tree community among plots but also between primary forest and secondary forest. A total of 1611 trees representing 114 species and 35 families were recorded from a total area of 3.75 ha. Euphorbiaceae was the dominant family in the forest with 12 species, followed by Fabaceae-Mimosoideae (10 species) and Phyllanthaceae (6 species) and Guttiferae (6 species). The biodiversity did not vary greatly from plot to plot on the whole of the study area (3.75 ha). The low value of Shannon index was obtained in plot 11 (H′=0.75) whereas the highest value was obtained in plot 12 (H′=4.46). The values of this index vary from 0.23 to 0.95 in plots P11 and P15, respectively. Results obtained revealed high biodiversity of trees of the forest of Impfondo-Dongou. The information on tree species structure and function can provide baseline information for conservation of the biodiversity of the tropical forest in this area.

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