-chore, -choric, -chorous, -chory
(Greek: a suffix; to spread, to disperse; to withdraw, to advance, to go; a means or agency for distribution)
Harvesting ants do not manage to carry all the seeds they collect back to their nests, and they do not eat all of the seeds stored in their granaries.
The result is that ants are a major and fortuitous dispersal agent for plants. They are especially effective in deserts and grasslands, but many species, not necessarily specialized harvesters, play some role even in tropical forests.
2. A plant that has a restricted distribution.
2. The conditoin of an organism that is dispersed through the agency of several animals.
2. Distribution of plants or seeds by the agency of living animals.
- Extremely long seed dispersal distances occur as a result of several processes; such as, ocean drift and tornadoes.
- Large numbers of seeds with different morphologies are frequently dispersed equivalent distances while attached to migrating ungulates.
- Seeds attached to the fleece of traditional nomadic, or transhumant, sheep are transported distances of up to several hundred kilometers in substantial numbers.
- Ecologists have long been frustrated by the logistical problems of gathering hard data on such dispersal and of performing useful experiments to verify their assumptions.
- Marked seeds of several common animal-dispersed (zoochory) herbaceous species were pressed onto the fleece of sheep as they passed through central Spain, and seeds still adhering to the animals were counted at regular intervals on the journey south.
- Retention patterns varied for different species:
It is well known that many plant species have seeds that are capable of dispersing over long distances, borne on the wind or carried in the gut of migrating birds or on the hides of migrating mammals.
- After 28 days and 400 km, five percent of Plantago lagopus (plantain) were still attached to the sheep.
- Fourty-seven percent of Trifolium angustifolium (clover) seeds were still attached to the sheep.
These were the longest dispersal distances recorded for these species, by two orders of magnitude, and confirm the potential for migrating ungulates to facilitate plant dispersals.
