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Related Concept Videos

Types of Selection01:46

Types of Selection

Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
Inclusive Fitness00:57

Inclusive Fitness

Most altruistic behavior—in which one animal helps another at a cost to themselves—occurs between relatives. Scientists think these altruistic behaviors evolved because they increase the inclusive fitness of the animal providing help.
Systematic Sampling Method01:17

Systematic Sampling Method

Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
Systematic sampling is one of the simplest methods...
Optimal Foraging00:48

Optimal Foraging

How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
Sampling Plans01:23

Sampling Plans

Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
Natural Selection and Mating Preferences01:06

Natural Selection and Mating Preferences

The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...

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Related Experiment Video

Updated: Jun 5, 2026

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
11:53

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Published on: December 9, 2012

Beyond opportunism: Key principles for systematic reserve selection.

R L Pressey1, C J Humphries, C R Margules

  • 1New South Wales National Parks and Wildlife Service, PO Box 1967, Hurstville, NSW 2220, Australia.

Trends in Ecology & Evolution
|January 18, 2011
PubMed
Summary
This summary is machine-generated.

Conservation reserve selection often fails to protect biodiversity due to opportunistic practices. Systematic approaches and planning principles are crucial for effective biodiversity conservation and linking conservation goals with real-world implementation.

Related Experiment Videos

Last Updated: Jun 5, 2026

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
11:53

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Published on: December 9, 2012

Area of Science:

  • Ecology
  • Conservation Biology
  • Environmental Management

Background:

  • The primary goal of conservation reserves is to sustain biological diversity by protecting a wide range of natural features.
  • Current reserve selection practices often diverge from this intention, rarely prioritizing feature representation.
  • Opportunistic reserve development can lead to inefficient resource allocation, jeopardizing comprehensive biodiversity protection.

Purpose of the Study:

  • To highlight the discrepancy between the intended purpose and actual practice in conservation reserve selection.
  • To emphasize the need for systematic approaches in reserve design to ensure effective biodiversity conservation.
  • To introduce emerging principles from systematic reserve selection procedures that can bridge the gap between intention and practice.

Main Methods:

  • This study is primarily a conceptual analysis and synthesis of existing conservation planning principles.
  • It reviews the challenges and shortcomings in current reserve selection methodologies.
  • It identifies emerging systematic procedures for reserve selection.

Main Results:

  • A significant gap exists between the ideal of comprehensive feature representation and the reality of opportunistic reserve selection.
  • Inefficient resource allocation due to ad-hoc selection compromises the goal of protecting all natural features.
  • Systematic approaches are essential for efficient and effective biodiversity conservation through reserve systems.

Conclusions:

  • Conservation reserve selection requires a shift from opportunistic practices to systematic planning.
  • Emerging principles in systematic reserve selection offer a pathway to align conservation intentions with practical implementation.
  • Adopting these principles is vital for reserves to fulfill their role in protecting global biodiversity.