Vertical migration of copepods
نویسندگان
چکیده
منابع مشابه
Interspecific Differences in the Diel Vertical Migration of Marine Copepods: The Implications
Samples collected by continuous plankton recorders (CPRs) between 1948 and 1992 were used to describe the diel vertical migration (DVM) behavior of 41 copepod taxa in the northeast Atlantic between 45 and 55?N and 11 and 31?W. A total of 13,622 samples, each representing 18.5 km (10 nm) of tow, were analyzed. Since CPRs are towed in near-surface waters, taxa that exhibit DVM occur predominantly...
متن کاملVertical distribution and population dynamics of copepods by dynamic optimization
Vertical distribution and population dynamics of copepods are viewed as a consequence of individual maximization of reproductive value (RV). RV for all individuals of all size classes (stages) and conditions (physiological states) is found by dynamic programming, and specifies a trajectory of optimal habitats in time and space. The optimal habitat is found by balancing the risk of predation and...
متن کاملOntogenetic and Seasonal Variation in the Diel Vertical Migration of the Copepods Metridia lucens and Metridia longa
Plankton samples collected and analyzed by the Continuous Plankton Recorder survey were used to examine the length of time spent near the surface in the North Atlantic and the North Sea by three closely related groups of zooplankton (copepodite stages 1-4 Metridia spp., copepodite stages 5-6 Metridia lucens, and copepodite stages 5-6 Metridia longa). For all three groups, the mean daily length ...
متن کاملDiel vertical migration
In this Quick Guide, Brierley provides a brief overview of a pervasive aspect of aquatic ecosystems, the daily movement of organisms up and down the water column.
متن کاملfourier migration for vertical velocity variations
the stolt (f-k) migration algorithm is a direct (i.e. non-recursive) fourier-domain technique based on a change of variables (or equivalently, a mapping) that converts the input spectrum to the output spectrum. the algorithm is simple and efficient but limited to constant velocity. a v(z)(f-k) migration method, capable of very high accuracy for vertical variations of velocity, can be formulated...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Plankton Research
سال: 1998
ISSN: 0142-7873,1464-3774
DOI: 10.1093/plankt/20.4.787