The Princeton Guide to Ecology

By Simon A. Levin | Go to book overview

IV.9
Seascape Microbial Ecology:
Habitat Structure, Biodiversity,
and Ecosystem Function
David M. Karl and Ricardo M. Letelier
OUTLINE
1. Introduction
2. Seascape structure, variability, and function
3. Assessments of microbial “species” diversity and function
4. The ocean genome
5. Ecotype variability and resource competition
6. The streamlined genome of SAR 11
7. Station ALOHA: A microbial observatory in the open sea
8. Conclusion

Seascapes are marine analogs of landscapes in the terrestrial biosphere, namely the physical, chemical, and biological elements that collectively define a particular marine habitat. The field of seascape ecology, also referred to as ecological geography of the sea, seeks fundamental understanding of spatial and temporal variability in habitat structure and its relationships to ecosystem function, including solar energy capture and dissipation, trophic interactions and their effects on nutrient dynamics, and patterns and controls of biodiversity. Implicit in the study of seascape ecology is an interest in the management of global resources through the development of new theory, the establishment of long-term ecological observation programs, and the dissemination of knowledge to society at large.


GLOSSARY

euphotic zone. Upper portion of the ocean where there is sufficient light to support net photosynthesis, usually the upper 0–200 m in the clearest ocean water

genome. The complete assembly of genes present in a given organism, coded by specific nucleotide se quences of DNA, that determines its taxonomic structure, metabolic characteristics, behavior, and ecological function

microorganism. The smallest form of life (<2 mm) on our planet and the most abundant in the open sea, sometimes reaching cell densities of 1 million cells per cubic centimeter

nitrogen fixation. The process whereby relatively inert gaseous nitrogen (N2) is reduced to ammonia (NH3) and thus converted into a biologically available form

nutrient. One of several organic or inorganic raw materials that are required for the growth of an organism, for example, nitrogen, phosphorus, iron, and vitamins

oligotrophic. A condition of low nutrient concentration and low standing stock of living organisms, for example, the open ocean

primary production. Metabolic process during which carbon dioxide is incorporated into organic matter by bacteria and eukaryotic algae using any of a variety of energy sources, but usually solar energy

remote sensing. The indirect measurement of habitat characteristics, for example by Earth-orbiting satellites

water mass. A portion of the marine environment that has a characteristic average value of temperature and salinity that is related to its origin and global circulation pattern


1. INTRODUCTION

The global ocean covers 71% of the surface of the Earth to a mean depth of approximately 4 km. In contrast to its terrestrial counterpart, where biomes are associated with characteristic landscapes, differences

-488-

Notes for this page

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Default project is now your active project.
Project items

Items saved from this book

This book has been saved
Highlights (0)
Some of your highlights are legacy items.

Highlights saved before July 30, 2012 will not be displayed on their respective source pages.

You can easily re-create the highlights by opening the book page or article, selecting the text, and clicking “Highlight.”

Citations (0)
Some of your citations are legacy items.

Any citation created before July 30, 2012 will labeled as a “Cited page.” New citations will be saved as cited passages, pages or articles.

We also added the ability to view new citations from your projects or the book or article where you created them.

Notes (0)
Bookmarks (0)

You have no saved items from this book

Project items include:
  • Saved book/article
  • Highlights
  • Quotes/citations
  • Notes
  • Bookmarks
Notes
Cite this page

Cited page

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited page

Bookmark this page
The Princeton Guide to Ecology
Table of contents

Table of contents

Settings

Settings

Typeface
Text size Smaller Larger Reset View mode
Search within

Search within this book

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

Full screen
/ 810

matching results for page

Cited passage

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited passage

Welcome to the new Questia Reader

The Questia Reader has been updated to provide you with an even better online reading experience.  It is now 100% Responsive, which means you can read our books and articles on any sized device you wish.  All of your favorite tools like notes, highlights, and citations are still here, but the way you select text has been updated to be easier to use, especially on touchscreen devices.  Here's how:

1. Click or tap the first word you want to select.
2. Click or tap the last word you want to select.

OK, got it!

Thanks for trying Questia!

Please continue trying out our research tools, but please note, full functionality is available only to our active members.

Your work will be lost once you leave this Web page.

For full access in an ad-free environment, sign up now for a FREE, 1-day trial.

Already a member? Log in now.