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Implications of desert rodent seed preferences for range remediation
Author
Longland, W. S.
Bateman, S. L.
Publisher
Society for Range Management
Publication Year
1998-11-01
Body

Many desert plants germinate and establish from seed caches made by granivorous rodents. As a preliminary test of the feasibility of using rodent seed-caching activities to enhance seedling emergence of native desert plants, we tested desert heteromyid rodents for preferential consumption and/or caching of native ("target") seeds versus a commercial ("decoy") seed. The target/decoy seed concept relies on rodents caching both seeds, and preferentially consuming an inexpensive decoy seed as a sacrifice to reduce consumption of less preferred target seeds. We used cafeteria-style, paired seed choice trials to test 2 potential target seeds known to germinate from rodent scatterhoard caches (Indian ricegrass, Achnatherum hymenoides [R. & S.] Barkworth, and four-wing saltbush, Atriplex canescens [Pursh] Nutt.) against a potential decoy seed (millet, Panicum miliaceum L.). Millet was highly preferred to saltbush, and may indeed be a useful decoy seed when saltbush is the target of range restoration. Also consistent with the target/decoy seed concept, more Indian ricegrass than millet seeds were cached in laboratory trials, and all seeds were cached in scatterhoards more than in larderhoards, where the probability of seedling emergence is negligible. However, millet seed may not always be a good candidate for a decoy seed, as it was not preferred to Indian ricegrass and was cached more frequently than saltbush. Overall, we find results of these choice tests to be encouraging for applying the target/decoy seed idea. We consider the relative merits of this idea versus traditional revegetation techniques. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020

Language
en
Resource Type
Text
Document Type
Journal Issue/Article
Digital Object Identifier (DOI)
10.2307/4003612
Additional Information
Longland, W. S., & Bateman, S. L. (1998). Implications of desert rodent seed preferences for range remediation. Journal of Range Management, 51(6), 679-684.
ISSN
0022-409X
OAI Identifier
oai:repository.arizona.edu:10150/643959
Journal Volume
51
Journal Number
6
Journal Pages
679-684
Collection
Rangeland Ecology & Management (REM)
Journal Name
Journal of Range Management
Keywords
millets
choice of species
Dipodomys merriami
dipodomys panamintinus
chaetodipus formosus
caching
Heteromyidae
Dipodomys
Perognathus
arid grasslands
Achnatherum hymenoides
foraging
seed dispersal
Atriplex canescens
animal behavior
feeding preferences