Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Formation of Species01:31

Formation of Species

46.1K
Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.
46.1K
Speciation Rates01:07

Speciation Rates

23.1K
Overview
23.1K
Osmoregulation in Fishes02:32

Osmoregulation in Fishes

54.0K
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
54.0K
Distribution and Dispersion00:54

Distribution and Dispersion

25.7K
To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement is known as the species distribution or dispersion. Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a...
25.7K
Hybrid Zones02:29

Hybrid Zones

22.1K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
22.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The age of rivalry: Eye lens stable isotopes reveal dynamic resource overlap throughout ontogeny in native and invasive fishes.

Oecologia·2026
Same author

Native and Non-Native Populations Respond Unevenly to River Barrier Removals.

Global change biology·2026
Same author

Predictions From Evolutionary Theory for Urban Environments.

Evolutionary applications·2026
Same author

Society's struggle with unwanted species: what centuries of history reveal about species bounty programs.

npj biodiversity·2026
Same author

A multi-trait analysis of the relationship between parasitism and female preference for orange ornaments in Trinidadian guppies (Poecilia reticulata).

Proceedings. Biological sciences·2026
Same author

Network Connectivity-based stream classification for the Conterminous United States.

Scientific data·2026

Related Experiment Video

Updated: Mar 1, 2026

Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools
09:32

Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools

Published on: November 20, 2017

9.9K

Spatial isolation and fish communities in drainage lakes.

Julian D Olden1, Donald A Jackson1, Pedro R Peres-Neto1

  • 1Department of Zoology, University of Toronto, 25 Harbord Street, Toronto, Ontario, M5S 3G5, Canada.

Oecologia
|May 27, 2017
PubMed
Summary

Lake isolation and watershed-scale environmental factors significantly shape fish communities in Ontario lakes. Understanding these connections aids in predicting fish assemblage structure and biodiversity conservation efforts.

Keywords:
ColonizationDispersalExtinctionIsolationLake connectivity

More Related Videos

Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout Salvelinus namaycush from Its Prey
12:24

Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout Salvelinus namaycush from Its Prey

Published on: August 29, 2014

11.4K
Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
07:41

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

8.1K

Related Experiment Videos

Last Updated: Mar 1, 2026

Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools
09:32

Development of New Methods for Quantifying Fish Density Using Underwater Stereo-video Tools

Published on: November 20, 2017

9.9K
Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout Salvelinus namaycush from Its Prey
12:24

Laboratory Estimation of Net Trophic Transfer Efficiencies of PCB Congeners to Lake Trout Salvelinus namaycush from Its Prey

Published on: August 29, 2014

11.4K
Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
07:41

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

8.1K

Area of Science:

  • Ecology
  • Aquatic Ecology
  • Conservation Biology

Background:

  • Fish community composition is influenced by various factors, including lake isolation and environmental conditions.
  • Understanding these influences is crucial for effective aquatic ecosystem management and conservation.

Purpose of the Study:

  • To investigate the association between lake isolation, environmental factors, and fish community composition in south-central Ontario drainage lakes.
  • To assess the utility of different lake isolation measures beyond simple straight-line distances.

Main Methods:

  • Examined 52 drainage lakes using eight quantitative measures of lake isolation.
  • Employed a Procrustean approach to analyze concordance between fish assemblage structure, lake isolation, and environmental data (morphology, water chemistry).

Main Results:

  • High concordance was found between fish community patterns and lake isolation/morphology at the watershed scale.
  • Relationships varied at the individual lake scale, with some communities strongly associated with spatial and abiotic conditions, while others showed weaker associations.
  • Alternative isolation measures provided greater insight than straight-line distances.

Conclusions:

  • Insular and habitat-related factors significantly influence fish community structure in drainage lakes.
  • The statistical methodology offers a robust framework for analyzing multivariate data at both landscape and local scales.
  • Considering nuanced measures of lake isolation is vital for a comprehensive understanding of fish community assembly.