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Related Concept Videos

Migration00:53

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
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Conservation of Small Populations

Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less likely to...
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Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
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Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
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There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
What is Conservation Biology?01:57

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Conservation biology is a scientific field that focuses on the preservation of biodiversity in order to protect ecosystems while meeting the needs of the human population. Humans require properly functioning ecosystems to maintain our supply of natural resources, including food, medicines, and building materials.

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Related Experiment Video

Updated: Jul 3, 2026

Using Pharmacological Manipulation and High-precision Radio Telemetry to Study the Spatial Cognition in Free-ranging Animals
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Persistent leatherback turtle migrations present opportunities for conservation.

George L Shillinger1, Daniel M Palacios, Helen Bailey

  • 1Hopkins Marine Station, Stanford University, Pacific Grove, California, USA.

Plos Biology
|July 18, 2008
PubMed
Summary
This summary is machine-generated.

Satellite tracking reveals endangered eastern Pacific leatherback turtles migrate through a consistent corridor to the South Pacific Gyre. This identifies key high seas areas for international conservation efforts to reduce fisheries bycatch.

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Area of Science:

  • Marine Biology
  • Conservation Science
  • Animal Migration

Background:

  • Eastern Pacific leatherback turtle populations have declined over 90% in two decades.
  • Threats include unsustainable egg harvesting and fisheries bycatch.
  • Oceanic habitat use and migration pathways remain poorly understood for this population.

Purpose of the Study:

  • To characterize the oceanic habitat use and migration pathways of eastern Pacific leatherback turtles.
  • To identify critical high seas areas for conservation and bycatch mitigation.

Main Methods:

  • Utilized the largest multi-year satellite tracking dataset for leatherback turtles (12,095 days).
  • Tracked 46 female leatherbacks tagged at Playa Grande, Costa Rica, from 2004-2007.

Main Results:

  • Leatherbacks exhibited rapid, directed southward movements post-nesting, following equatorial currents.
  • A persistent migration corridor was identified from Costa Rica to the South Pacific Gyre.
  • The South Pacific Gyre, a low-energy region, was utilized for dispersal.

Conclusions:

  • Ocean currents predictably influence leatherback migration corridors.
  • Identified specific high seas locations within the South Pacific Gyre for targeted conservation.
  • Findings support multinational conservation frameworks and inform bycatch mitigation strategies.