-
Literature Review of Freshwater Classification Frameworks
-
by
The Nature Conservancy
—
published
Nov 03, 2014
—
last modified
Aug 31, 2015 12:12 PM
—
filed under:
Streams,
Stream Classification,
Research
Identifying aquatic ecosystems requires a classification of stream and lake features into recognizable entities or categories. Although a number of nationally recognized terrestrial community classifications exist, the most accepted being the National Vegetation Classification System (Grossman et al. 1998), currently there is no national or international standard for classifying aquatic communities or ecosystems. Despite the lack of a national aquatic community classification, aquatic ecosystem classifications and frameworks have been developed at a variety of spatial scales. Their goal is often to reflect the distribution of aqutic biological communities. These assemblages recur across the landscape under similar habitat conditions and ecological processes (Higgins et al. 2005). The methods used to develop aquatic ecosystem classifications vary widely, as do the biotic and abiotic variables considered in the classifications. The classifications generally fall into two broad categories: 1) taxonomic or bio-ecosystem classifications and 2) environmental or geo-physical ecosystem classifications (Rowe and Barnes 1994); however some classifications combine aspects of both.
Located in
Projects
/
…
/
Stream Classification System for the Appalachian Landscape Conservation Cooperative
/
Background Materials: A Stream Classification System for the Appalachian LCC
-
Barrens Topminnow , Barrier Construction for Invasive Gambusia
-
by
Christin VanZant
—
published
Mar 13, 2017
—
last modified
Mar 14, 2017 03:14 PM
—
filed under:
Fish,
Management,
TRB,
Research
Reintroduction and management of a highly endemic and endangered species to the TN Barrens. Derived resources from this project include/will include data sets, general report, and news announcement.
Located in
Projects
-
Bear Creek Mussel Recovery
-
by
Christin VanZant
—
published
Mar 13, 2017
—
last modified
Mar 14, 2017 03:21 PM
—
filed under:
Management,
Communication,
TRB,
Amphibians,
Research,
Bivalves
Restoring mussel fauna
Located in
Projects
-
Alabama Statewide Crayfish Survey
-
by
Christin VanZant
—
published
Mar 13, 2017
—
last modified
Aug 29, 2017 03:28 PM
—
filed under:
Management,
Communication,
TRB,
Research,
Education and Outreach
Stuart McGergor - Geologial Survey of Alabama
Located in
Projects
-
Alabama Statewide Fish IBI
-
by
Christin VanZant
—
published
Mar 13, 2017
—
last modified
Mar 20, 2017 02:01 PM
—
filed under:
Communication,
Management,
TRB,
Research
Developing IBI's for strategic watersheds statewide. Derived resources will include data sets, imagery, maps, videos, and general and technical reports.
Located in
Projects
-
Alligator Snapping Turtle Surveys and Genetics - Lower TN and MS River
-
by
Christin VanZant
—
published
Mar 13, 2017
—
last modified
Mar 14, 2017 01:21 PM
—
filed under:
Reptile,
Genetics,
TRB,
Research,
Population size,
Distribution,
Projects
Dr. Josh Ennen, Aquatic Conservation Biologist, TN Aquarium Conservation Institute
Located in
Projects
-
Riparian Restoration Decision Support Tool Fact Sheet
-
by
Jessica Rhodes
—
published
Aug 14, 2015
—
last modified
Jun 02, 2025 01:11 PM
—
filed under:
Outreach,
Climate Change,
Aquatic,
Resilience,
Research
An innovative web-based tool - funded by the Appalachian Landscape Conservation Cooperative (LCC) and developed by researchers from the U.S. Forest Service and the University of Massachusetts - is allowing managers to rapidly identify high-priority riparian targets for restoration to make more resilient in preparation for changes in future climate. The Riparian Restoration Prioritization to Promote Climate Change Resilience (RPCCR) tool identifies vulnerable stream and riverbanks that lack tree cover and shade in coldwater stream habitats. By locating the best spots to plant trees in riparian zones, resource managers can provide shade that limits the amount of solar radiation heating the water and reduces the impacts from climate change. This well-established management strategy will benefit high-elevation, cold-water aquatic communities.
Located in
Resources
/
How-To Guides and Handouts
-
University of California, Davis
-
by
Rosanne Hessmiller
—
last modified
Jun 27, 2025 03:53 PM
—
filed under:
Universities,
Education,
Agricultural Studies,
Research
Davis is the ultimate college town. It’s green, laid back and friendly. You can walk or bike from the main campus to the main street in a few blocks. College students fill up the tables at nearby restaurants and coffee shops with their laptops, homework and friends. The town of Davis helps our students thrive.
Located in
LP Members
/
Organizations Search
-
American Black Duck Decision Support Tool
-
by
Rhishja Cota
—
published
Nov 09, 2022
—
last modified
Jul 26, 2023 12:14 PM
—
filed under:
Additional Resources,
American Black Duck,
Decision Support Tools,
Climate Change,
American Black Duck Additional Resources,
Watersheds,
Black Duck,
Research,
Urbanization,
Peer-reviewed Science,
Waterfowl,
Migration,
Aquatics,
Products,
Birds,
Resources,
Salt marshes
The Atlantic Coast Joint Venture Black Duck Decision Support Tool (DST) helps to identify the exact number of acres to protect, restore or maintain at the small watershed scale. Through this tool, land managers can determine the best way to contribute to achieving black duck goals anywhere on the landscape.
Located in
Information Materials
/
Research
/
Peer-reviewed Science
-
Population Genetics of the Eastern Hellbender (Cryptobranchus alleganiensis alleganiensis) across Multiple Spatial Scales
-
by
Shem D. Unger, Olin E. Rhodes Jr, Trent M. Sutton, Rod N. Williams
—
published
Feb 10, 2023
—
last modified
Jul 26, 2023 01:36 PM
—
filed under:
Additional Resources,
Eastern Hellbender Additional Resources,
Research,
Peer-reviewed Science,
Aquatics,
Resources
Conservation genetics is a powerful tool to assess the population structure of species and provides a framework for informing management of freshwater ecosystems. As lotic habitats become fragmented, the need to assess gene flow for species of conservation management becomes a priority. The eastern hellbender (Cryptobranchus alleganiensis alleganiensis) is a large, fully aquatic paedamorphic salamander. Many populations are experiencing declines throughout their geographic range, yet the genetic ramifications of these declines are currently unknown. To this end, we examined levels of genetic variation and genetic structure at both range-wide and drainage (hierarchical) scales. We collected 1,203 individuals from 77 rivers throughout nine states from June 2007 to August 2011. Levels of genetic diversity were relatively high among all sampling locations. We detected significant genetic structure across populations (Fst values ranged from 0.001 between rivers within a single watershed to 0.218 between states). We identified two genetically differentiated groups at the range-wide scale: 1) the Ohio River drainage and 2) the Tennessee River drainage. An analysis of molecular variance (AMOVA) based on landscape-scale sampling of basins within the Tennessee River drainage revealed the majority of genetic variation (∼94–98%) occurs within rivers. Eastern hellbenders show a strong pattern of isolation by stream distance (IBSD) at the drainage level. Understanding levels of genetic variation and differentiation at multiple spatial and biological scales will enable natural resource managers to make more informed decisions and plan effective conservation strategies for cryptic, lotic species.
Located in
Information Materials
/
Research
/
Peer-reviewed Science