نتایج جستجو برای: plankton achievement

تعداد نتایج: 52290  

Journal: :CoRR 2012
Poulami Majumder Partha Pratim Ray

Plankton research has always been an important area of biology. Due to various environmental issues and other research interests, plankton hatching and harnessing has been extremely red-marked zone for bio-aqua scientists recently. To counter this problem, no wireless sensor assisted technique or mechanism has yet not been devised. In this literature, we propose a novel approach to pursue this ...

2015
Hussein A. Al-Barazanchi Abhishek Verma Shawn Wang

The study of plankton distribution is an important tool used for assessing the changes to marine ecosystem. Having a robust automated system for classification of plankton images plays an important role in advancing marine biology research. The images used in this study come from the SIPPER system. The challenges with SIPPER’s plankton image dataset are the high degree of similarities between d...

2008

• Some plankton, such as diatoms, grow better at cooler temperatures. Warming may cause other, less palatable, species to replace them, depriving zooplankton and menhaden of their primary food source. • Because phytoplankton are linked to freshwater and nutrient inputs, draught will likely decrease their abundance. Also, when nutrients are reduced, smaller phytoplankton replace diatoms, and the...

2013
Susanne Menden-Deuer

Localized concentrations of plankton (i.e. patches) alter the optical and acoustical properties of the water column and can have significant ramifications for the ecological dynamics of marine communities. The goal of this research is to develop a mechanistic understanding and predictive capability of the relative importance of biological versus physical processes in the formation, persistence,...

2014
Percy L. Donaghay

The long term goal is to increase our understanding of the biological biological, physical biological and chemical biological interactions that control the initiation, maintenance and dissipation of plankton patches. This goal can most readily be achieved by directly measuring processes thought to control plankton patch dynamics, experimentally testing their importance, incorporating those proc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1393

according to research, academic self-concept and academic achievement are mutually interdependent. in the present study, the aim was to determine the relationship between the academic self-concept and the academic achievement of students in english as a foreign language and general subjects. the participants were 320 students studying in 4th grade of high school in three cities of noor, nowshah...

2016
Korhan Özkan Erik Jeppesen Thomas A. Davidson Rikke Bjerring Liselotte S. Johansson Martin Søndergaard Torben L. Lauridsen Jens-Christian Svenning

A two-decade (1989–2008) time series of lake phytoand zooplankton, water characteristics and climate in 17 Danish lakes was analysed to examine the long term changes and the effects of lake restoration efforts. The analyses of the pair-wise correlations across time series revealed a strong synchrony in climatic variables among the lakes. A significant, but weak increase in air temperature was o...

Journal: :Neurocomputing 2001
Winfried Wojtenek M. H. Hofmann Lon A. Wilkens

The paddlefish detects electric fields of its planktonic prey. Each plankton particle, such as a moving Daphnia, is an electric dipole. Primary afferent neu-rons of the paddlefish electrosensory system were found to respond transiently to moving dipoles (i.e., Daphnia) within their receptive field. Positive plankton potential increases and negative potential decreases the primary afferent spike...

Journal: :Current Biology 2017

2000
M. Li A. Gargett K. Denman

A coupled biological–physical box model is developed to investigate the seasonal and interannual variability of marine plankton in strongly estuarine systems such as the semi-enclosed estuary of the Strait of Georgia and Juan de Fuca Strait on the west coast of Canada. The estuarine circulation not only supplies nutrients to the euphotic layer but also transports plankton between the straits, c...

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