scholarly journals Floristic composition of a conservation area in the Federal District of Brazil

2012 ◽  
Vol 35 (4) ◽  
pp. 377-384 ◽  
Author(s):  
Juliana Silvestre Silva ◽  
Jeanine Maria Felfili
Keyword(s):  
Floristic Composition ◽  
Federal District ◽  
Conservation Area

Transgenic proteins in maize in the Soil Conservation area of Federal District, Mexico

2007 ◽  
Vol 5 (5) ◽  
pp. 247-252 ◽  
Author(s):  
José-Antonio Serratos-Hernández ◽  
José-Luis Gómez-Olivares ◽  
Noé Salinas-Arreortua ◽  
Enrique Buendía-Rodríguez ◽  
Fabián Islas-Gutiérrez ◽  
...  
Keyword(s):  
Soil Conservation ◽  
Federal District ◽  
Conservation Area

scholarly journals Structure and composition of trees in Mount Tilu Nature Reserve, West Java, Indonesia

2020 ◽  
Vol 21 (6) ◽  
Author(s):  
Tri Cahyanto ◽  
Muhammad Efendi ◽  
DIAN MUHAMAD RAMDAN
Keyword(s):  
Tree Species ◽  
Nature Reserve ◽  
Basal Area ◽  
Principal Component ◽  
Floristic Composition ◽  
Diversity Indices ◽  
Species Structure ◽  
West Java ◽  
Conservation Area ◽  
Regeneration Status

Abstract. Cahyanto T, Efendi M, Ramdan DM. 2020. Structure and composition of trees in Mount Tilu Nature Reserve, West Java, Indonesia. Biodiversitas 21: 2674-2680. An understanding of the structure and composition of stands in a conservation area is needed to support sustainable management strategy. However, this information in the Mount Tilu Nature Reserve, Bandung District, West Java area is still lacking. This research was aimed to analyze the structure and composition of tree species in the block of Malagembol forest, Mt. Tilu NR. Data collection was carried out through vegetation analysis using sampling plot method with size of 10x100 m2 at three-level altitudes of 1530 m, 1745 m, and 1950 m asl. Observation parameters included species names, number of individuals, and diameter at breast height (dbh). Data were analyzed to determine the floristic composition, species structure based on their diameter class, relative basal area, diversity indices, and analysis of the importance of the main components of trees species through Principal Component Analysis (PCA). A total of 32 tree species from 23 families was found in the observation plots which was dominated by Fagaceae, Lauraceae, and Myrtaceae families. Some pioneer plants covered the gap in vegetation due to minor disturbance and residual damage in the past. Nonetheless, the dominance of stands with small diameters indicated good regeneration status following such disturbance. Based on these findings, we recommend protecting the vegetation in Mt. Tilu NR by limiting community activities that can disturb the forest.

scholarly journals Species-environment relationship in the herb-subshrub layer of a moist Savanna site, Federal District, Brazil

2008 ◽  
Vol 68 (1) ◽  
pp. 25-35 ◽  
Author(s):  
CBR. Munhoz ◽  
JM. Felfili ◽  
C. Rodrigues
Keyword(s):  
Organic Matter ◽  
Spatial Distribution ◽  
Soil Moisture ◽  
Species Distribution ◽  
Floristic Composition ◽  
Federal District ◽  
Moisture Variation ◽  
The Relationship ◽  
Textural Analyses ◽  
Soil Moisture Variation

The soils are seasonally or permanently saturated in the moist grassland savanna, locally known as Campo Limpo Úmido. Soil moisture variation seems to determine spatial distribution of communities. The objective of this study is to analyse the relationship between environmental variables and the patterns of spatial distribution of species in the herbaceous-subshrub layer of an area of moist grassland at the Água Limpa Farm, Brasília, DF (15° 56’ to 15° 59’ S and 47° 55’ to 47° 58’ W Gr.). An area of 400 x 400 m was divided into four sections of 200 x 200 m where four transects were randomly sampled. A line intercept method was adopted for the phytossociological study. Superficial soils samples (0-20 cm) were collected for chemical and textural analyses. Gravimetric soil moisture was measured quarterly during the study-year. A total of 85 species in 67 genera and 24 families were found. The diversity was high, Shannon’s index, H’, was 2.60 nats.cover-1. Floristic composition of the transects in soils with a high gravimetric soil moisture and high content of organic matter and sand differed from those transects in soils with a lower gravimetric soil moisture indicating seasonal variation. A Canonical Correspondence Analysis (CCA) showed significant correlations between soil texture and soil moisture features and species distribution. Gravimetric soil moisture, organic matter, clay, silt and sand were significantly correlated to species distribution in the moist grassland determining mosaics in the vegetation.

scholarly journals FLORISTIC COMPOSITION AND STRUCTURE OF A PEAT SWAMP FOREST IN THE CONSERVATION AREA OF THE PT NATIONAL SAGO PRIMA, SELAT PANJANG, RIAU, INDONESIA

REINWARDTIA ◽  
2014 ◽  
Vol 14 (1) ◽  
pp. 193 ◽  
Author(s):  
Yusi Rosalina ◽  
Kuswata Kartawinata ◽  
Nisyawati Nisyawati ◽  
Erwin Nurdin ◽  
Jatna Supriatna
Keyword(s):  
Diversity Index ◽  
Strong Association ◽  
Similarity Index ◽  
Floristic Composition ◽  
Primary Forest ◽  
Conservation Area ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Peat Swamp ◽  
Composition And Structure

We studied the floristic composition and structure of the logged-over peat swamp forest in the  PT National Sago Prima of PT Sampoerna Agro Tbk. group for future management of the conservation area that has been  set aside by the company.  In January - February 2012, 25 quadrats of 20 m x 20 m were laid out systematically along a transect,  thus covering a sampled area of 1-ha.  The results showed that the study site was a regenerating and developing secondary peat swamp forests having high plant species richness.  The total number of species recorded was 73 species of 38 families, consisting of 49 species (30 families) of trees (DBH? 10 cm ), 42 species (24 families) of saplings (H > 1.5 m and DBH < 10 cm), and 41 species (27 families) of seedlings and undergrowth.  Tree density was 550 individuals/ha, and total tree basal area was 18.32 m2. The Shannon-Wiener’s Diversity Index for trees was high  (3.05)  Two tree species with the highest Importance Values (IV) were Pandanus atrocarpus (IV= 45.86 %) and Blumeodendron subrotundifolium (22.46  %).  The tree families with the highest IV were Pandanaceae (45.86), Myrtaceae (40.37), and Dipterocarpaceae (39.20). Forest structure dominated by trees with a diameter below 20 cm amounting to 408 trees/ha (74.05%). and  D and E strata with height of less than 20 m, and density of 431 trees/ha (78.36%). Jaccard Similarity index among species, showed  strong association between Pandanus atrocarpus and Blumeodendron subrotundifolium  and based on this association combined  with high IVs, the two parameters of species  characterized the forest, hence the forest could be designated as the Pandanus atrocarpus--Blumeodendron subrotundifolium association. Primary forest species with high economic values were still present in the forest. Eleven species can be included in the IUCN Red List, of which Shorea rugosa is in the category of Critically Endangered), Shorea tesymanniana Endangered and  Gonystylus bancanus vulnerable, hence they should  be protected.

scholarly journals Floristic composition of two wetland forests in Araguaian Plain, State of Tocantins, Brazil, and comparison with other areas

2008 ◽  
Vol 32 (1) ◽  
pp. 129-141 ◽  
Author(s):  
Sebastião Venâncio Martins ◽  
Elizabeth Rodrigues Brito ◽  
Ary Teixeira de Oliveira Filho ◽  
Alexandre Francisco da Silva ◽  
Elias Silva
Keyword(s):  
Land Use ◽  
Water Saturation ◽  
Floristic Composition ◽  
Federal District ◽  
Rice Cultivation ◽  
Native Forest ◽  
Forest Fragments ◽  
Floristic Similarity ◽  
Floristic Inventory ◽  
Wetland Forests

Seasonally inundated native forest fragments ("ipucas") located in natural landform depression swales of the Araguaian Plain are currently under land use pressure. Their composition needs to be better understood to guarantee their protection. This comparative study of fragments under different land use conditions was carried out at Lago Verde Farm, Lagoa da Confusão,Tocantins, Brazil. The location coordinates are UTM 643586 and 644060 East and 8792795 and 8799167 North. This study aimed to first analyze and compare the floristic composition of two seasonally inundated forest fragments of approximately one hectare each. The first is located in an intact (without human intervention) Gramineous-Woody Savanna region and the second in a rice cultivation region. The floristic composition of both fragments was then compared to that of other wetland forests located in the Northern, Central Western and Southeastern regions of Brazil.All the floristic compositions are affected by seasonal flooding and soil water saturation. The floristic inventory used a census method that sampled all trees and shrubs with perimeter at 1.30 m from soil (PAP) = 15cm; 665 individuals, 33 families and 49 species were recorded for the intact region and 807 individuals, 35 families and 70 species for the altered region fragment. The values of H' = 0.806 (Shannon-Weaver) and J = 3.44 nats /individual (equability) for the fragment in the region affected by rice cultivation are considered high compared to the intact region fragment values (H' = 0.761 and J = 2.97). Families contributing to floristic richness in the altered region fragment were Fabaceae (9 species), Vochysiaceae (6) and Annonaceae (4). In the intact region fragment, Fabaceae also presented the largest number of species (8) followed by Arecaceae, Chrysobalanaceae and Vochysiaceae (3 each). When comparing the forests from various regions in Brazil, floristic similarity was found to be small. Greater similarity was found when indices for the two Lagoa da Confusão fragments were compared to riparian forests located in the Federal District of Brasilia.

Analysis of the floristic composition of the Brazilian cerrado vegetation II: Comparison of the woody vegetation of 98 areas

1996 ◽  
Vol 53 (2) ◽  
pp. 153-180 ◽  
Author(s):  
J. A. Ratter ◽  
S. Bridgewater ◽  
R. Atkinson ◽  
J. F. Ribeiro
Keyword(s):  
Hierarchical Classification ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Federal District ◽  
Minas Gerais ◽  
Specific Level ◽  
Mato Grosso ◽  
Cerrado Vegetation ◽  
Species Analysis ◽  
Mato Grosso Do Sul

An analysis was made of the floristic composition of 98 areas of cerrado and Amazonian savanna, encompassing most of the area of such vegetation in Brazil. A total of 534 species of trees and large shrubs were recorded for these areas, of which 158 (30%) occurred at a single site only. Such unicates and taxa without determinations to specific level were excluded from the study since they provide no basis for comparison. The data were analysed by three techniques of multivariate analysis: (a) a divisive hierarchical classification by Two-way Indicator Species Analysis (TWINSPAN). (b) an agglomerative hierarchical classification by UPGMA (Unweighted Pair-Groups Method using Arithmetic Averages) using the Sørensen Coefficient of Community (CC) as a measure of similarity, and (c) an ordination by Detrended Correspondence Analysis (DCA). The results from all three methods showed great similarity, demonstrating a strong geographic pattern in the distribution of the flora of the cerrado biome and allowing the recognition of southern (Sâo Paulo and S Minas Gerais), southeastern (largely Minas Gerais), central (Federal District, Goiás and parts of Minas Gerais), central-western (largely Mato Grosso, Goiás and Mato Grosso do Sul) and northern groups (principally Maranhão, Tocantins and Pará), as well as a disjunct group of Amazonian savannas. Soil type (mesotrophic or dystrophic) is an important factor in determining floristic composition. The study demonstrated that cerrado vegetation is extremely heterogeneous: none of the 534 species occurred at all sites and only 28 species were present at 50% or more.

Medicaid & Medicare: D.C. Appellate Court Denies Claim for Medicare Reimbursement of GME Cost

1999 ◽  
Vol 27 (2) ◽  
pp. 205-205
Author(s):  
choeffel Amy
Keyword(s):  
Medical Center ◽  
Federal District ◽  
Federal Court ◽  
University Of Pennsylvania ◽  
District Court ◽  
Appellate Court ◽  
Court Of Appeals ◽  
Department Of Health ◽  
Administrative Proceedings ◽  
Summary Judgment

The U.S. Court of Appeals for the District of Columbia upheld, in Presbyterian Medical Center of the University of Pennsylvania Health System v. Shalala, 170 F.3d 1146 (D.C. Cir. 1999), a federal district court ruling granting summary judgment to the Department of Health and Human Services (DHHS) in a case in which Presbyterian Medical Center (PMC) challenged Medicare's requirement of contemporaneous documentation of $828,000 in graduate medical education (GME) expenses prior to increasing reimbursement amounts. DHHS Secretary Donna Shalala denied PMC's request for reimbursement for increased GME costs. The appellants then brought suit in federal court challenging the legality of an interpretative rule that requires requested increases in reimbursement to be supported by contemporaneous documentation. PMC also alleged that an error was made in the administrative proceedings to prejudice its claims because Aetna, the hospital's fiscal intermediary, failed to provide the hospital with a written report explaining why it was denied the GME reimbursement.

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