Tree species such as Shellbark Hickory are shade-tolerant and considered competitors in their respective ecosystems.
- Shade tolerance refers to a plant's capacity to withstand dim lighting.
- Depending on its history or stage of development, a particular plant may exhibit variable degrees of shade tolerance or even a necessity for light. This is because different plant species have different adaptations to shade.
- Species that can flourish in the shade and when there is natural competition from other plants are said to be shade-tolerant. Shellbark Hickory is a shade-tolerant plant. List of other shade tolerant plants include: Balsam Fir, Sugar Maple, Spruce and Red Mulberry.
- Species that can't tolerate shade need full sunlight and minimal to no competition. They are known as shade-intolerant species. Most Pines are shade-intolerant plants.
- Between the two are trees that can tolerate intermediate shade. Oaks are intermediate shade-tolerant plants along with Birch and Elm.
Hence, hickories are shade-tolerant species which are considered as competitors in their respective fields.
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