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Full-Text Articles in Life Sciences

Influence Of Climate Change And Postdelisting Management On Long‐Term Population Viability Of The Conservation‐Reliant Kirtland's Warbler, Donald J. Brown, Deahn M. Donner, Christine A. Ribic, Carol I. Bocetti Jan 2019

Influence Of Climate Change And Postdelisting Management On Long‐Term Population Viability Of The Conservation‐Reliant Kirtland's Warbler, Donald J. Brown, Deahn M. Donner, Christine A. Ribic, Carol I. Bocetti

Faculty & Staff Scholarship

Rapid global climate change is resulting in novel abiotic and biotic conditions and in‐ teractions. Identifying management strategies that maximize probability of long‐term persistence requires an understanding of the vulnerability of species to environmen‐ tal changes. We sought to quantify the vulnerability of Kirtland's Warbler (Setophaga kirtlandii), a rare Neotropical migratory songbird that breeds almost exclusively in the Lower Peninsula of Michigan and winters in the Bahamian Archipelago, to pro‐ jected environmental changes on the breeding and wintering grounds. We devel‐ oped a population‐level simulation model that incorporates the influence of annual environmental conditions on the breeding and wintering grounds, …


Analytical Cpg Model Driven By Limb Velocity Input Generates Accurate Temporal Locomotor Dynamics, Sergiy Yakovenko, Anton Sobinov, Valeriya Gritsenko Jan 2018

Analytical Cpg Model Driven By Limb Velocity Input Generates Accurate Temporal Locomotor Dynamics, Sergiy Yakovenko, Anton Sobinov, Valeriya Gritsenko

Faculty & Staff Scholarship

The ability of vertebrates to generate rhythm within their spinal neural networks is essential for walking, running, and other rhythmic behaviors. The central pattern generator (CPG) network responsible for these behaviors is well-characterized with experimental and theoretical studies, and it can be formulated as a nonlinear dynam- ical system. The underlying mechanism responsible for locomotor behavior can be expressed as the process of leaky integration with resetting states generating appropriate phases for changing body velocity. The low-dimensional input to the CPG model generates the bilateral pattern of swing and stance modulation for each limb and is consistent with the desired …


Nitrogen Removal In A Horizontal Subsurface Flow Constructed Wetland Estimated Using The First-Order Kinetic Model, Lijuan Cui, Wei Li, Yaqiong Zhang, Jiaming Wei, Yinru Lei, Manyin Zhang, Xu Pan, Xinsheng Zhao, Kai Li, Wu Ma Jan 2016

Nitrogen Removal In A Horizontal Subsurface Flow Constructed Wetland Estimated Using The First-Order Kinetic Model, Lijuan Cui, Wei Li, Yaqiong Zhang, Jiaming Wei, Yinru Lei, Manyin Zhang, Xu Pan, Xinsheng Zhao, Kai Li, Wu Ma

Faculty & Staff Scholarship

We monitored the water quality and hydrological conditions of a horizontal subsurface constructed wetland (HSSF-CW) in Beijing, China, for two years. We simulated the area-based constant and the temperature coefficient with the first-order kinetic model. We examined the relationships between the nitrogen (N) removal rate, N load, seasonal variations in the N removal rate, and environmental factors—such as the area-based constant, temperature, and dissolved oxygen (DO). The effluent ammonia (NH4 + -N) and nitrate (NO3 −-N) concentrations were significantly lower than the influent concentrations (p < 0.01, n = 38). The NO3 −-N load was significantly correlated with the removal rate (R 2 = 0.96, p < 0.01), but the NH4 + -N load was not correlated with the removal rate (R 2 = 0.02, p > 0.01). The area-based constants of NO3 −-N and NH4 + -N at 20 ◦C were …