Man Qi

• PhD
• Marie Curie Fellow at University of Oxford

Exceptions to the generality of the stress-gradient hypothesis (SGH) may be reconciled by considering species-specific traits and stress tolerance strategies. Studies have tested stress tolerance and competitive ability in mediating interaction outcomes, but few have incorporated this to predict how species interactions shift between competition an...

Sea level rise is reshaping the coasts, allowing coastal habitats such as tidal marshes to migrate inland. To predict where changes will occur, it is critical to understand the factors that influence land cover transition. Here, we test the influence of land cover type on land cover transition. We hypothesized that marsh migration may vary by uplan...

Resource competition theory (R* theory) predicts that the species with the highest efficiency (lowest resource requirements) will exclude all other species when competing over a single resource. This prediction contrasts the vast diversity in natural systems where there are often few limiting resources. We conjecture that this prediction is derived...

Marsh plants regulate marsh surface elevation through organic matter accumulation and sediment capturing, thus feedback loops and relationships between vegetation and marsh elevation form the basis of numerical models that estimate and predict marsh vulnerability to Sea Level Rise (SLR). However, with interior portions of shallow-sloping microtidal...

Resource competition theory predicts coexistence and exclusion patterns based on species' R*s, the minimum resource values required for a species to persist. A central assumption of the theory is that all species have equal access to resources. However, many systems are characterized by preemption exploitation, where some species deplete resources...

In salt marshes, abiotic factors, interspecific competition or facilitation, and herbivory have been discussed extensively as important drivers of marsh plant distribution patterns. However, the relative importance of various regeneration processes across stress gradients received little attention, despite their importance in explaining plant commu...

Terrestrial laser scanning (TLS) is an important part of urban reconstruction and terrain surveying. In TLS applications, 4-point congruent set (4PCS) technology is widely used for the global registration of point clouds. However, TLS point clouds usually enjoy enormous data and uneven density. Obtaining the congruent set of tuples in a large point...

Interior marsh pond formation has been commonly observed in tidal marshes affected by high rates of relative sea level rise (RSLR). However, it is difficult to conclude whether an accretion deficit (accretion which does not keep pace with RSLR) or natural ice and wrack disturbance has driven pond formation. We propose that marsh deterioration cause...

Estuary protection is a fundamental part of watershed management. However, land reclamation activities affect species distribution patterns and cause ecological degradation. To improve watershed management, we studied the distribution patterns of three typical salt marsh species and their interspecific interactions along groundwater table depth and...

Spartina spp. (cordgrasses) often dominates intertidal mudflats and/or low marshes. The landward invasion of these species was typically thought to be restrained by low tidal inundation frequencies and interspecific competition. We noticed that the reported soil salinity levels in some salt marshes were much higher than those at the mean higher hig...

This study attempted to remove an organic from an aqueous solution (wastewater) using submerged plasma irradiation (SPI) process. N, N-Dimethyl-4-nitrosoaniline (RNO) was used as a target material. Effect of electrode materials, applied voltage, initial concentration, and two types of buffer solutions were studied with the purpose of monitoring the...

The present study examined the critical effects of artificial hydrological alterations to ecological processes in estuarine ecosystems. We integrated an open-water method of net ecosystem metabolism (NEM) with a system dynamics model of dissolved oxygen (DO) to understand responses of ecosystem function to variation in river flow. Turbidity pulse e...

After tidal restriction in salt marshes, the composition of the vegetation changes from predominance of halophyte species to predominance of glycophytes. However, little is known about how different plant traits and stress types influence these vegetation changes. In this study, we propose the use of relative stress tolerance curves to couple stres...