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X-linked Traits01:19

X-linked Traits

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In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
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Ecological Disturbance02:26

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An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
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When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
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All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
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The term self-esteem is often used generically, to refer to how people feel about themselves. However, according to research, there are three distinct constructs that should not be used interchangeably (Brown & Marshall, 2006). 
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Relating Stomatal Conductance to Leaf Functional Traits
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Linking Traits across Ecological Scales Determines Functional Resilience.

Rebecca V Gladstone-Gallagher1, Conrad A Pilditch2, Fabrice Stephenson3

  • 1School of Science, University of Waikato, Hamilton, New Zealand; Institute of Marine Science, University of Auckland, Auckland, New Zealand.

Trends in Ecology & Evolution
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Maintaining ecosystem function amid global degradation requires understanding disturbance impacts and biodiversity resilience. Resilience depends on interactions between species traits and landscape attributes for ecosystem recovery and services.

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Area of Science:

  • Ecology
  • Environmental Science
  • Conservation Biology

Background:

  • Globally accelerating ecosystem degradation threatens vital ecosystem services.
  • Maintaining ecosystem function is a key conservation priority.
  • Disturbance regimes and ecosystem resilience are critical factors.

Purpose of the Study:

  • To understand how ecosystem function changes with disturbances of varying intensity, spatial extent, and frequency.
  • To identify how attributes at different scales of ecological organization confer resilience.
  • To determine the interactions between species attributes and landscape attributes in maintaining ecosystem resilience.

Main Methods:

  • The study synthesizes existing ecological research on disturbance and resilience.
  • It examines attributes of individual species and community-level properties.
  • It considers resilience at multiple scales, from species to landscapes.

Main Results:

  • Ecosystem resilience is influenced by both disturbance characteristics and the ecosystem's inherent capacity to respond.
  • Individual species attributes affect resistance to disturbances.
  • Landscape-scale attributes are crucial for the recovery of communities and ecosystem functions.

Conclusions:

  • Understanding the interplay between disturbance regimes and biodiversity resilience is essential for predicting ecosystem function.
  • Defining the characteristics of a resilient community across multiple scales is critical for effective conservation strategies.
  • Interactions between species traits and landscape structure mediate ecosystem responses to environmental change.