Effects of nutrients and planktivorous fish on the phytoplankton of shallow and deep aquatic systems.

From: Ecology | Date: July 1, 1996| Author: | Copyright information

The response of phytoplankton to nutrient (N, P) and planktivorous fish additions (Phoxinus sp.) was compared between two sets of enclosures (8 m in diameter) installed at different depths in a dimictic temperate lake. One set of eight enclosures was located in the deep part of the lake (12 m) where water thermally stratifies during the summer. The other set of eight enclosures was located in a shallow area of the lake (3.5 m) where the water does not thermally stratify. During the summer months, phytoplankton cell number and biomass increased significantly with both nutrient additions (P = ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Long-term sodar observations in Moscow and a new approach to potential mixing determination by radiosonde data
; ...The experimental data about thermal stratification of a low layer of atmosphere...efficiently explained in terms of a thermal stratification type. The statistics of the thermal stratification in the lowest 800-m air layer...
The Tropopause and the Thermal Stratification in the Extratropics of a Dry Atmosphere
; ...extratropical tropopause height and thermal stratification is derived by considerations of...extratropical tropopause height and thermal stratification and relates the tropopause potential...fluxes maintain a statically stable thermal stratification and, in interaction with large...
Community structure and forest invasion by an exotic herb over 23 years.
; ...Additional hypotheses related to community structure are: (1) communities with higher...with or override the influence of community structure (Pickard 1984, Rejmanek 1989). It...1989, DeFerrari and Naiman 1994); community structure changes both as an impact of disturbance...
Inertial and Buoyancy Driven Water Flows under Gas Bubbling and Thermal Stratification Conditions in a Tundish Model
; ...under gas bubbling and thermal stratification conditions, in a one-strand...curtain. I. INTRODUCTION THERMAL stratification in tundishes arises from the corresponding thermal stratification of steel in the ladle...
Phylogenetic perspectives on community ecology.
; ...proximate and ultimate causes of community structure. Proximate approaches to community...the effect these processes have on community structure. These approaches have been in the...investigation of ultimate causes of community structure to fall from favor in the late 1970s...
Protecting ponds: keep bodies of water healthy by incorporating aeration equipment.(Irrigation and Water)(Cover story)
; ...layers form. This process, called thermal stratification (temperature layering of the water...column by avoiding or eliminating thermal stratification. Although there are many methods...and induced wave action prevents thermal stratification and supports aerobic bacterial...
Transient flow and heat transfer in a steelmaking ladle during the holding period
; ...changed to examine their effect on thermal stratification in molten steel. A simplified model...history of mean steel temperature, thermal stratification, and heat loss rate are obtained...steel into the refractory, and thermal stratification in the melt will be formed during...
Numerical Study of the 10 January 1998 Lake-Effect Bands Observed during Lake-ICE
; ...effects of wind shear and weak or unstable thermal stratification. In the case of weak thermal stratification, Brown (1972) described a cross-roll shear effect. For unstable thermal stratification, Kuettner (1971) described along-roll...
Plant hybrid zones affect biodiversity: tools for a genetic-based understanding of community structure.(Hybridization and Resistance to Parasites)
; ...a genetic-based understanding of community structure. Two related factors support this...study of species interactions and community structure. Here we examine five issues. (1...Are there genetic components to community structure? (4) Although the direct effects...
Chicago Bridge and Iron Acquires Patent for Fluid.(Trigen Energy Corporation's SoCool thermal stratification fluid)(Brief Article)
; ...Trigen Energy Corporation's (TEC) SoCool low-temperature thermal stratification fluid. CBI said the agreement covers all related domestic...patents, both issued and pending. TEC's low temperature thermal stratification fluid provides stratified thermal energy storage (TES...