نتایج جستجو برای: regeneration and shrub species

تعداد نتایج: 16915508  

2011
Francesc Montané Pere Casals Mark R. T. Dale

We used a multi-method approach to analyze the spatial patterns of shrubs and cover types (plant species, litter or bare soil) in grassland-shrubland ecotones. This approach allows us to assess how fine-scale spatial heterogeneity of cover types affects the patterns of Cytisus balansae shrub encroachment into mesic mountain grasslands (Catalan Pyrenees, Spain). Spatial patterns and the spatial ...

Journal: :Conservation 2023

Affem Boussou community forest (AFC) abounds in important biological resources. This study, which contributes to its better management, examines the spatiotemporal dynamics of vegetation and ecological structural characteristics propose a zoning plan for said forest. The analysis land use AFC from Google Earth images 2015, 2018, 2021 revealed regressive trend formations: crops fallows (−33.98%)...

2002

AB%rKA(:f.-Canopy gaps in southern Appalachian mixed-oak forests were assessed foxthe effects of topographic, gap and stand variables on density of wood seedlings. Seedling density was significantly correlated with percent slope and positively with gap age (l-5 yr). Density varied substantially among topographic positions and increased with gap size. Specirs richness decreased ovt’itime and inc...

2005
A. B. Frank J. F. Karn

Temperate grasslands are a species-rich ecosystem that may be important in mitigating the increase in atmospheric CO2. The effect of shrub invasion on CO2 fluxes in Northern Great Plains grasslands is not known. The objectives of this research were to determine CO2 and water vapor fluxes over a grazed mixed-grass prairie (prairie site) and a mixed-grass prairie that has extensive invasion of sh...

Journal: :Revista de biologia tropical 2013
Sanghamitra Samantaray Ashok Kumar Bishoyi Satyabrata Maiti

Vitex trifolia is a shrub species with popular use as a medicinal plant, for which leaves, roots and flowers have been reported to heal different distresses. The increasing exploitation of these plants has endangered its conservation, and has importantly justified the use of biotechnological tools for their propagation. Our aim was to present an efficient protocol for plant regeneration through...

Natural regeneration is one of the key aspects of forest sustainability and a tool to decide on restoration programs in forest areas. The purpose of this study was to investigate the quantity of natural regeneration of Acer campestre L. as one of the most important tree species in Arasbaran forests and its relationship with elevation changes and structural characteristics in the natural stands....

Journal: :Folia primatologica; international journal of primatology 2014
Barbara T Martinez Onja H Razafindratsima

Frugivorous primates can play a critical role in the regeneration of degraded habitats by dispersing seeds of their food plants. We studied the diet and seed dispersal patterns of 3 groups of habituated red-ruffed lemurs (Varecia rubra) in a rain forest restoration site in Masoala National Park, Madagascar, to assess the species' seed dispersal effectiveness. Fruits accounted for 61% of the die...

2006
Zalmen Henkin Marcelo Sternberg No’am G. Seligman Imanuel Noy-Meir

Changes in species richness and productivity in a Mediterranean dwarf-shrub community were documented during 5 years following treatments intended to improve soil fertility and reduce shrub cover. Five treatments, replicated five times, were tested: (a) shrub cover reduction by selective herbicide application; (b) application of medium levels of phosphorus; (c) application of high doses of phos...

Study of vegetation and environmental factors is considered as one of the important aspects in the management and conservation of natural ecosystems. This research investigates the effect of altitude from sea level (ASL) (in four classes: less than 1600 m, 1600-1800, 2000-1800 and more than 2000 m) and the direction of slope (in four main directions: north, south, east and west) on vegetative a...

2017
Yasmin Hageer Manuel Esperón-Rodríguez John B. Baumgartner Linda J. Beaumont

BACKGROUND Shrubs play a key role in biogeochemical cycles, prevent soil and water erosion, provide forage for livestock, and are a source of food, wood and non-wood products. However, despite their ecological and societal importance, the influence of different environmental variables on shrub distributions remains unclear. We evaluated the influence of climate and soil characteristics, and whe...

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