scholarly journals Structure, physiognomy and floristic composition of a Schinopsis balansae (Anacardiaceae) forest in the Southern Chaco, Argentina

2018 ◽  
pp. 1013-1020
Author(s):  
Juan Pablo Lewis ◽  
Eduardo F. Pire ◽  
Ignacio M. Barberis
Keyword(s):  
Complex Structure ◽  
Floristic Composition ◽  
Woody Species ◽  
Leaf Size ◽  
Santa Fe ◽  
Crown Diameter ◽  
Gran Chaco ◽  
Open Forest ◽  
Layer 2 ◽  
Schinopsis Balansae

Amazonia and the Gran Chaco are the largest phytogeographic units of tropical and subtropical South America. The Santa Fe Forest Wedge is the southernmost portion of the Eastern Chaco, where the Schinopsis balansae forest (Quebrachal) is the most widespread and characteristic community. A detailed analysis of the floristic composition, physiognomy and vegetation structure was carried out in 32 10x10 m contiguous plots sampled along two transects in one of the these forests near Vera. Province of the Santa Fe, Argentina. All woody individuals 0.6 m present in the plots were recorded, identified and there their height and crown diameter measured. With These data, cartographic diagrams and vegetation profiles were drawn. Woody species were classified according to leaf size, leaf texture, presence of spines and phenology. This quebrachal is an open forest of very complex structure and heterogeneous floristic composition. The majority of woody species in this forest are deciduous, with small leaves and often with spiny structures. It has two high arboreal strata of S. balansae and Acacia praecox. and one arboreal low of Achatocarpus praecox with juvenile individuals of the species of the upper strata. There is also a shrub layer 2 m high. The arboreal canopy is discontinuous and has openings that can be quite large, where the ground is covered by a dense, grainy layer. This forest is similar to other S balansae forests of the Santa Fe Forest, but very different from most forests in other areas of the Gran Chaco.

scholarly journals Spatial heterogeneity and woody species distribution in a Schinopsis balansae (Anacardiaceae) forest of the Southern Chaco, Argentina

2015 ◽  
pp. 515-524
Author(s):  
I M Barberis ◽  
E F Pire ◽  
J P Lewis
Keyword(s):  
Spatial Heterogeneity ◽  
Species Distribution ◽  
Woody Species ◽  
Santa Fe ◽  
Schinopsis Balansae

El objeto de esle trabfljo es analizarla ,heterogeneidad espacial de un bosque de Schinopsis balansae ("Quebrachal") cerca de Vera (Santa Fe, Argentina) y establecer sí ,hay correlaCión entre la distribución de las especies leñosas y los factores ambient,ales.Este tipo de bosque es la comunidad vegetal más importante de la Cuña Boscosa. de Santa Fe, que es la. porción más austral del Chaco Oriental. En un stand, parcialmente recuperado se instalaron 32 parcelas contiguas de 10 x 10 m a lo largo de dos transectas. Se cartografiaron todos los individuos de las distintas especies de leñosas, así como los distintos micrositios caracterizados por el microrelieve, humedad del suelo y presencia de bromeliáceas terrestres. El 54% del suelo es plano, la mitad del cual es barroso o está .frecuentemente inundado, y algo más del JI % es cóncavo y está casi siempre inundado, La mayor parte de las leñosas crecen en micro sitios bien drenados mientras ,que en suelos ,muy húmedos solamente crecen Geoffroea decorticans, Prosopis spp. y S. balansae, Los resultados obtenidos sugieren que la heterogeneidad del suelo, (microrrelieve y humedad) es el factor más importante que determina la distribuc:ión de las especies leñosas sobre el terreno.

scholarly journals ESPACE BOISE DE LECOFERME DE LOKOLI (SINEMATIALI, NORD DE LA COTE DIVOIRE) : UN CAS DE COMPENSATION ECOLOGIQUE

2021 ◽  
Vol 9 (09) ◽  
pp. 466-473
Author(s):  
Pagadjovongo Adama Silue ◽  
◽  
Kouadio Arsene Dieudonne Koffi ◽  
Konan Edouard Kouassi ◽  
Amani Abell Mike Kouakou ◽  
...  
Keyword(s):  
Economic Value ◽  
Floristic Composition ◽  
Woody Species ◽  
Total Biomass ◽  
Carbon Markets ◽  
Young Tree ◽  
Carbon Sequestration Potential ◽  
Open Forest ◽  
Wooded Area ◽  
Sequestration Potential

When ecosystems are well managed, they are carbon sinks. The objective of this study is to know the state of the plant biodiversity of the wooded area of the Lokoli Ecofarm and its contribution to the regulation of the climatic regime, with a view to better conservation decision-making.A floristic inventory made it possible to determine the diversity and the floristic composition of the ligneous plants in the different Ecofarm habitats. Dendrometric measurements were carried out to determine the structural profile and the sequestered carbon stock of each habitat. The floristic study made it possible to identify 63 woody species divided into 251 classified into 22 families. The open forest has proven to be the richest in species and the most diverse. The structure in diameter classes reveals that the different biotopes are dominated by young tree stems, with a strong tendency to regenerate. The amount of carbon contained in the total biomass was found to be greater in the fallow (8.87 t / ha) than in the open forest (6.53 t / ha) and savannah (6.88 t / ha). The sequestered atmospheric carbon is estimated at 108.98 t / ha in total, for an economic value varying from 27,799.34 to 124,279.41 euros depending on the different carbon markets. In addition, this study showed that fallow significantly contributes to increasing the carbon sequestration potential of the Ecofarm.

scholarly journals Floristic composition of the Montane Forest in the Almadina-Barro Preto axis, Southern Bahia, Brazil

2014 ◽  
Vol 14 (1) ◽  
Author(s):  
Macielle Macedo Coelho ◽  
André Márcio Amorim
Keyword(s):  
Species Richness ◽  
Tropical Forests ◽  
Atlantic Forest ◽  
Floristic Composition ◽  
Woody Species ◽  
Life Forms ◽  
Montane Forest ◽  
Forest Remnants ◽  
Southern Bahia ◽  
Arboreal Habit

The aim of this study is to survey the angiosperms of two montane forest remnants in the southern Bahia, Brazil: Corcovado (SCO) and Pedra Lascada (SPL). Both fragments are located in the municipality of Almadina and Barro Preto, respectively, and are 18 km distant from each other. We sampled 899 species of angiosperms distributed in 437 genera and 116 families. The SCO was the richest area with 678 species, distributed in 367 genera and 100 families. SPL showed 466 species in 269 genera and 88 families. The percentage of species identified was 85.8% and of this total, 37.7% are endemic to the Atlantic Forest, 11.2% are endemic to southern Bahia and northern Espírito Santo and 7% are disjunct between the Atlantic Forest and Amazon. The remaining percentages (44.3%) were of species widely distributed. The richest families in the two areas were Orchidaceae (10%), Rubiaceae (7%), Bromeliaceae (5.5%), Melastomataceae (4.2%) and Poaceae (4%). The richest genera were Psychotria (2%),Piper (1.8%), Ocotea (1.6%),Vriesea (1.5%) and Peperomia (1.4%). More than half of the recorded species showed non-arboreal habit, regarding life forms documented. That comes against the assertion that many authors in the tropical forests, where species richness in angiosperms is expected for non-woody species, especially in montane forests. Twelve species have been identified as new, but seven others already described from collections previously obtained in these two areas. Orchidaceae, Rubiaceae, Poaceae and Bromeliaceae showed significant richness in this study these families are commonly reported as the richest in other inventories in the Atlantic Forest in southern Bahia reinforcing their importance to the regional flora. The high levels of richness, endemism, and the growing numbers of new taxonomic discoveries from the SPL and SCO sites indicate the biological importance of these two forest remnants. The implementation of parks or other protected environmental reserves would be essential to the conservation of its species.

scholarly journals The Generality of Leaf Size versus Number Trade-off in Temperate Woody Species

2008 ◽  
Vol 102 (4) ◽  
pp. 623-629 ◽  
Author(s):  
Dongmei Yang ◽  
Guoyong Li ◽  
Shucun Sun
Keyword(s):  
Woody Species ◽  
Leaf Size ◽  
Trade Off

Paronychia sanchez-vegae (Caryophyllaceae), a new woody species of Paronychia from North Peru

Phytotaxa ◽  
2018 ◽  
Vol 334 (1) ◽  
pp. 41 ◽  
Author(s):  
DANIEL B. MONTESINOS-TUBÉE ◽  
ASUNCIÓN CANO ◽  
LUIS F. GARCÍA-LLATAS ◽  
YINGZI JU ◽  
ANNELEEN KOOL
Keyword(s):  
New Species ◽  
Leaf Surface ◽  
Woody Species ◽  
Leaf Size ◽  
Molecular Data ◽  
Central Andes ◽  
A New Species

As part of botanical expeditions in the Amazonas region of North Peru, we found plants from the Central Andes (North Peru). Based on morphology and molecular data, the Peruvian population was described and illustrated here as a new species for Science, named Paronychia sanchez-vegae. The new species is compared with its most likely closest relative, P. andina from which differs by the larger size, its woody ramified stems, the glabrous leaf surface, shorter leaf size, shorter flowers and larger size of the ovary.

Vegetation of the Yellingbo Nature Conservation Reserve and its relationship to the distribution of the helmeted honeyeater, bell miner and white-eared honeyeater

2001 ◽  
Vol 28 (1) ◽  
pp. 41 ◽  
Author(s):  
Jennie Pearce ◽  
Peter R. Minchin
Keyword(s):  
Nature Conservation ◽  
Structural Characteristics ◽  
Floristic Composition ◽  
Open Forest ◽  
Floristic Characteristics ◽  
The Relationship

The structural characteristics of the habitat of the helmeted honeyeater, Lichenostomus melanops cassidix, the bell miner, Manorina melanophrys, and the white-eared honeyeater, Lichenostomus leucotis, within the Yellingbo Nature Conservation Reserve have been described elsewhere. The present study aimed to describe the floristic characteristics of the reserve, and explore the relationship between the floristic composition of the vegetation and the presence of each of the three honeyeater species. Six vegetation groups were described and mapped for the reserve. The bell miner and white-eared honeyeater were found to occupy all vegetation groups in proportion to their availability. The helmeted honeyeater was strongly associated with only one of the vegetation groups: E. camphora open forest. The helmeted honeyeater therefore appears to be the most floristically restricted of the three honeyeater species, and this dependence may lead to greater levels of competition for habitat with the more generalist bell miner and white-eared honeyeater.

Structure and Composition of the Abrupt Rain-Forest Boundary in the Herberton Highland, North Queensland

1989 ◽  
Vol 37 (5) ◽  
pp. 413 ◽  
Author(s):  
GL Unwin
Keyword(s):  
Structural Changes ◽  
Woody Species ◽  
Fire Regimes ◽  
Forest Edge ◽  
Permanent Sample Plots ◽  
Boundary Change ◽  
Eucalypt Forest ◽  
Open Forest ◽  
Closed Forest ◽  
Forest Boundary

Structural and floristic features of the rainforest-eucalypt forest boundary are described for two sites on the seasonally clouded eastern slopes of the Herberton Highland, north Queensland. Permanent sample plots, transects and canopy profiles were used to analyse variations across the narrow ecotone. The forest ecotone was found highly variable, spatially and temporally. Within rainforest, richness of woody species was maintained through to the closed forest edge. However, structural changes were more pronounced towards the boundary than were floristic variations and a fringe of immature rainforest varied in depth from 20-500 m. In the open forest margin, tall trees of Eucalyptus grandls were restricted to a narrow zone between the rainforest edge and the broad expanse of medium height Eucalyptus intermedia. Within this transition, young rainforest trees and some shrubs were observed, during a 12-year interval, to be establishing beneath tall E. grandis, displacing fire-prone grasses in the process. The distribution of old E. grandis within rainforest provides a record of recent boundary change. On evidence presented, the rainforest-eucalypt forest boundary is dynamic and parts of the rainforest are expanding due to favourable contemporary fire regimes.

scholarly journals Sample intensity in ombrophilous open forest at Verde Para Sempre Extractive Reserve, Porto de Moz, PA

2017 ◽  
Vol 12 (1) ◽  
pp. 68 ◽  
Author(s):  
Fábio Miranda Leão ◽  
Luiz Fernandes Silva Dionisio ◽  
Loirena Do Carmo Moura Sousa ◽  
Marlon Costa De Menezes ◽  
Marcelo Henrique Silva de Oliveira ◽  
...  
Keyword(s):  
Forest Management ◽  
Species Diversity ◽  
Sustainable Forest Management ◽  
Sampling Error ◽  
Economic Value ◽  
Floristic Composition ◽  
Extractive Reserve ◽  
Open Forest ◽  
Significant Difference ◽  
The Ideal

Determining the ideal sampling intensity is important to guarantee data closer to reality with less cost and time in the forest inventory. The objective of this paper was to evaluate the influence of different sample intensities to estimate the floristic composition, species diversity and the timber volume, beyond compare the results with their respective parameters obtained in the census of an ombrophilous open forest area in Verde Para Sempre Extractive Reserve. Was simulated a random sampling with sampling units of 1 ha and several sample intensities: 5%, 10%, 15% and 20% in an area of 200 ha that it was submitted to a forest census. It was evaluated the phytosociological parameters such as structure and diversity, and the estimated errors in the sampling intensities for the volume. The forest has a structure with high diversity and species of high economic value, indicating the existence of an aptitude for sustainable forest management. The treatment with 5% and 10% sample intensity were not enough to contemplate all the species in the area and estimate the volume inside to the required accuracy limit, maximum of 10% sampling error. The treatments of 15% and 20% resembled the parametric value regarding floristic composition, species diversity and volumetry of the forest census of the area, showing no significant difference between them. The analysis of the phytosociological structure showed the importance of using sample inventories to evaluate the economic potential of an area and its suitability for forest management.

scholarly journals Short Communication: Floristic composition and relationships between plant species abundance and soil properties in common hazel (Corylus avellana) mountainous forest of northern Iran

2018 ◽  
Vol 19 (5) ◽  
pp. 1835-1841
Author(s):  
GHADER POURRAHMATI ◽  
ASADOLLAH MATAJI ◽  
HASSAN POURBABAEI ◽  
ALI SALEHI
Keyword(s):  
Soil Properties ◽  
Plant Species ◽  
Short Communication ◽  
Species Abundance ◽  
Floristic Composition ◽  
Woody Species ◽  
Corylus Avellana ◽  
Herbaceous Species ◽  
Northern Iran ◽  
Total N

Pourrahmati G, Mataji A, Pourbabaei H, Salehi A. 2018. Short Communication: Floristic composition and relationships between plant species abundance and soil properties in common hazel (Corylus avellana) mountainous forest of northern Iran. Biodiversitas 19: 1835-1841. Mountainous forests are valuable terrestrial ecosystems because of their useful services for the human being. Here, we explored the floristic composition and the relationships between plant species abundance distribution and soil physical and chemical properties in common hazel (Corylus avellana L.) in the mountainous forest of northern Iran. Within the forest stand, 30 quadrats (20 m × 20 m and 1 m × 1 m for woody and herbaceous species, respectively) were selectively sampled along an altitudinal range from 1300 m to 1800 m a.s.l. to assess plant species composition and abundance, and soil samples were taken to perform chemical and physical analyses. The results showed that a total of 43 herbaceous and 15 woody species belonging to 23 and 8 families were identified. The abundance of herbaceous species was significantly correlated with soil properties (pH and total N). Furthermore, the abundance of woody species had a non-significant correlation with soil properties.

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