Profundal Zone

Profundal Zone

Below the depth of effective light, beneath the thermocline, lie the profundal waters. Here, diversity and abundance of life are influenced by oxygen and temperature. The organisms depend upon the rain of organic material from the layers above as their energy source. In highly productive waters, decomposing organisms deplete the profundal waters of oxygen that little aerobic life can exist there.

The profundal zone of a deep lake is a relatively larger portion of the lake volume, so the highly productive water of the epilimnion is small in comparison to the volume of profundal water and decomposition does not deplete the oxygen. Here the profundal zone supports some life, particularly fish, some plankton and such organisms as certain cladocerans which live in the bottom ooze.

Other zooplankton may occupy this zone during some part of the day, but migrate upward to the surface to feed. Only during the spring and autumn overturns when organisms from the upper layers enter this zone is life abundant in the profundal waters.

Next Topics…

XXX
XXY
XXZ

Comments are closed

...more from Dr. Gordon Snyder
Dr. Gordon Snyder on Google


info@sciencefaircenter.com

Home | Privacy Policy | Customer Service | Contact Us | Links

Visa Master Card AmEx PayPal

Please visit our family of websites

Student water science projects
SchoolScienceKits.com
ScienceFairCenter.com
ScienceFairWater.com
ScienceFairCenter.com online store
SchoolScienceKits.com/environmental online store
SchoolScienceKits.com/drinking online store
Watercenter.org

Whales Without Borders
WhalesWithoutBorders.info

Water filters, water test kits, water equipment
Watercenter.com
Watercenterfilters.com
Watercenter.net

New Water Sciences Websites
Basic Water Science Topics
Student Water Kits
Photos, Videos No Fence Wetland Restoration

Scrapbook card making paper crafts
Urbanscrapbooker.com
Urbanscrapbooker.com online store
ScrappysNeighborhoodDesigns.com
Urban Paper Crafter Store Map
Urban Paper Crafter Videos

Music, music composition, restore vinyl records
BarrySebastian.com
SebastionAndTheDeepBlue.com
Cleanlp.com
Cleanlps.com online store
JonesTechServices.com
spam prevention


All our websites are different...
Website created by Gordon Snyder and hosted by: synergos.com
Last updated on:

Family Friendly Website Safe Surf Sites Water Friendly Website Award Internet Rating Content Assoc.
www.sciencefairwater.com © 1998 - 2020 Gordon Snyder & Consultants, Inc., All rights reserved .