Ecology

Genotyping-By-Sequencing for Plant Genetic Diversity Analysis: A Lab Guide for SNP Genotyping
Genotyping-by-sequencing (GBS) has recently emerged as a promising genomic approach for exploring plant genetic diversity on a genome-wide scale. However, many uncertainties and challenges remain in the application of GBS, particularly in non-model species. Here, we present a GBS protocol we developed and use for plant genetic diversity analysis. It uses two restriction enzymes to reduce genome...


Scenario-Based Impacts of Land Use and Climate Change on Land and Water Degradation from the Meso to Regional Scale
Scale-dependent parameter models were developed and nested to the Soil and Water Assessment Tool-SWAT to simulate climate and land use change impacts on water-sediment-nutrient yields in Benin at a regional scale (49,256 km²). Weighted contributions of relevant landscape attributes characterizing the spatial pattern of ongoing hydrological processes were used to constrain the model parameters ...
The influence of socioeconomic factors on traditional knowledge: a cross scale comparison of palm use in northwestern South America
We explored the power of 14 socioeconomic factors for predicting differences in traditional knowledge about palms (Arecaceae) at the personal, household, and regional levels in 25 locations in the Amazon, Andes, and Choc? of northwestern South America. Using semistructured interviews, we gathered data on palm uses from 2050 informants in 53 communities and four countries (Colombia, Ecuador, Per...


Effect of plant density on phytoremediation of polycyclic aromatic hydrocarbons contaminated sediments with Vallisneria spiralis
A 54-day-long study was conducted to investigate the effect of plant density (260, 780, 1300 and 2080plantsm−2) of Vallisneria spiralis on the remediation of sediments contaminated by polycyclic aromatic hydrocarbons (PAHs). Dissipation ratios of phenanthrene and pyrene in sediments were initially the highest in treatment of 2080plantsm−2. However, after a 54-day incubation, no statistical ...
An ecological assessment of rehabilitated bauxite residue
Assessment of soil biological communities and activity may be a valuable indicator of ecological stress and ecosystem function in rehabilitated bauxite residues. Establishment of keystone species and evidence of processes such as decomposition have been demonstrated on a number of mine spoil types but not on alkaline, sodic bauxite residue. Using the litterbag technique the spatial and temporal...


Eradicating invasive Spartina alterniflora with alien Sonneratia apetala and its implications for invasion controls
The smooth cordgrass (Spartina alterniflora) has invaded coastal areas throughout the world, including China, in the past decades. Scientists of China and other countries are trying all means to control its invasion, including physical removal, chemicals, and biological control by herbivores. The present research chose a small island (the Qi’ao Island) to study biocontrol of S.alterniflora wi...
The substantial influences of non-resource conditions on recovery of plants: A case study of clipped Spartina alterniflora asphyxiated by submergence
Because non-resource factors, which can not be utilized by organisms but can influence biological growth, are important growing conditions for species, the study of the effect of these factors on the recovery of disturbed plants can contribute to the management of vegetation. Spartina alterniflora (smooth cordgrass), having invaded many marshes, was clipped to test the effects of submergence ti...

Great swamp natural effluent management system – a summary of thirteen years of operations
Beaufort-Jasper Water Sewer Authority has discharged reclaimed wastewater continuously for thirteen years to a 194ha natural swamp forest in coastal South Carolina (USA). Wastewater inputs have increased from an average of 363m3/d in 1999 to an average of 8823m3/d in 201Natural inflows of rainfall and runoff to the swamp forest, averaging 9757m3/d exceed anthropogenic inputs. Wastewater inputs ...
Retrofitting pool-and-weir fishways to improve passage performance of benthic fishes: Effect of boulder density and fishway discharge
Retrofitting, or the addition of features to existing fishways to make them more suitable for upstream fish passage, is an issue of increasing interest in fishway science. Despite its potential for aiding fish passage, few studies are available on retrofitting of pool-and-weir fishways by adding boulders at the bottom of each pool of these facilities. The aim of this study was to assess the per...

Significance and estimation of oxygen mass transfer coefficient in simulated waste stabilization pond
In this paper an effort has been made to theoretically estimation of overall oxygen mass transfer coefficient (K L) in field conditions by applying wind correction to the oxygen mass transfer coefficient (K Lphy) estimated in a simulated pond in laboratory conditions using physical absorption method. The value of K Lphy (8.44×10−6 m/s) was estimated experimentally by three well-mixed reactor...
Cultivation of Chlorella sp. IM-01 in municipal wastewater for simultaneous nutrient removal and energy feedstock production
Current study assesses the potential of indigenously isolated microalgae Chlorella sp. IM-01 for nutrients removal from sewage wastewater and also usability of this wastewater for mass cultivation of microalgae for biofuels production. Growth of Chlorella sp. IM-01 is studied in BG-11 nutrient media and wastewater samples (inlet and outlet from primary treatment point designated as S1 and S2, r...

Nitrogen transformation in horizontal and vertical flow constructed wetlands applied for dairy cattle wastewater treatment in southern Brazil
The aim of this study was to evaluate the nitrogen transformations in horizontal and vertical flow constructed wetlands (HFCW and VFCW), working in parallel and applied for dairy cattle wastewater treatment. Both HFCW (26.50m2 of surface area) and VFCW (14.30m2 of surface area) were filled up with sand (d10 of 0.3mm and uniformity coefficient of 2.50) as bed media and planted with Typha dominge...
Algal community analysis in a waste stabilisation pond
Our knowledge on the algal community structure in waste stabilisation ponds is limited and it is unclear how physical–chemical changes affect the algal community structure and the treatment performance of waste stabilisation ponds. In the present paper we studied the spatial distribution of the algal community in a waste stabilisation pond in Cuenca (Ecuador) and found that the distribution w...
Effect of combinations of aquatic plants (Hydrilla, Ceratophyllum, Eichhornia, Lemna and Wolffia) on arsenic removal in field conditions
A field experiment was conducted in a combinatorial approach to evaluate the performance of five aquatic plants, singly and in all possible combinations of two plants, for as removal from 4L of 2500μgL−1 as in 30 days. Under as stress, Hydrilla showed an increase in growth rate (19%) in comparison to control, while other plants demonstrated a decline. among different combinations, Ceratophyl...
Arbuscular mycorrhizal fungi improve growth and mineral uptake of olive tree under gypsum substrate
In Tunisian dry land soils, the gypsum is ubiquitous with water scarcity and represents a major limitation for olive and several other fruit tree cultures. However, the effect of gypsum on this species is little understood. One-year old olive plants cv. “Chemlali”, which were obtained from semi hardwood cuttings, were inoculated in a nursery with an endomycorrhizae (Glomus intraradices) and...