USGS Home
Contact USGS
Search USGS
Science Topics
Maps, Imagery, and Publications
Hazards
Newsroom
Education
Jobs
Partnerships
Library
About USGS
Podcasts/RSS
You are here:
Topics
>
Population and community ecology
Help
Ecosystems
The interacting populations of plants, animals, and microorganisms occupying a certain area, and their relationship to the environment.
Subtopics:
Aquatic ecosystems
(104 items)
Terrestrial ecosystems
(88 items)
Wetland ecosystems
(25 items)
Related topics:
Ecology
Habitats
Refine results by state:
Alaska
Arizona
Arkansas
California
Colorado
Florida
Hawaii
Idaho
Iowa
Louisiana
Maine
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Mexico
New York
North Carolina
North Dakota
Oklahoma
Oregon
South Dakota
Tennessee
Texas
Utah
Virgin Islands of the United States
Washington
West Virginia
Wisconsin
Wyoming
Results 1 - 10 of 220 listed by similarity [
list alphabetically
]
Ecosystems of South Florida
[
New Window
]
An overview with brief descriptions and photographs of some of South Florida's unique ecosystems.
Biological resource status and trends: Aquatic ecosystems
[
New Window
]
Information concerning status and trends of biological resources, focusing on aquatic ecosystems
Biological resource status and trends: Bay, delta, and estuarine ecosystems
[
New Window
]
Information concerning status and trends of biological resources, focusing on bay, delta, and estuarine ecosystems
Biological resource status and trends: Boreal forest ecosystems
[
New Window
]
Information concerning status and trends of biological resources, focusing on boreal forest ecosystems
Biological resource status and trends: Desert ecosystems
[
New Window
]
Information concerning status and trends of biological resources, focusing on desert ecosystems
Biological resource status and trends: Ecosystems
[
New Window
]
Information concerning status and trends of biological resources, focusing on Ecosystems
Biological resource status and trends: Forest ecosystems
[
New Window
]
Information concerning status and trends of biological resources, focusing on Forest ecosystems
Biological resource status and trends: Grassland ecosystems
[
New Window
]
Information concerning status and trends of biological resources, focusing on Grassland ecosystems
Biological resource status and trends: Inland water ecosystems
[
New Window
]
Information concerning status and trends of biological resources, focusing on inland water ecosystems
Biological resource status and trends: Lake ecosystems
[
New Window
]
Information concerning status and trends of biological resources, focusing on lake ecosystems
Result pages:
1
2
3
4
5
6
...
Next
Search USGS
Alphabetical Index of Topics
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
Find a topic in this index: