The Response of Litter-Associated Myxomycetes to Long-Term Nutrient Addition in a Lowland Tropical Forest.
Amoeba
Panama
Slime mold
fertilization
nutrient limitation
protist
Journal
The Journal of eukaryotic microbiology
ISSN: 1550-7408
Titre abrégé: J Eukaryot Microbiol
Pays: United States
ID NLM: 9306405
Informations de publication
Date de publication:
09 2019
09 2019
Historique:
received:
16
10
2018
revised:
31
01
2019
accepted:
11
02
2019
pubmed:
23
2
2019
medline:
17
6
2020
entrez:
23
2
2019
Statut:
ppublish
Résumé
Myxomycetes (plasmodial slime molds) are abundant protist predators that feed on bacteria and other microorganisms, thereby playing important roles in terrestrial nutrient cycling. Despite their significance, little is known about myxomycete communities and the extent to which they are affected by nutrient availability. We studied the influence of long-term addition of N, P, and K on the myxomycete community in a lowland forest in the Republic of Panama. In a previous study, microbial biomass increased with P but not N or K addition at this site. We hypothesized that myxomycetes would increase in abundance in response to P but that they would not respond to the sole addition of N or K. Moist chamber cultures of leaf litter and small woody debris were used to quantify myxomycete abundance. We generated the largest myxomycete dataset (3,381 records) for any single locality in the tropics comprised by 91 morphospecies. In line with our hypothesis, myxomycete abundance increased in response to P addition but did not respond to N or K. Community composition was unaffected by nutrient treatments. This work represents one of very few large-scale and long-term field studies to include a heterotrophic protist highlighting the feasibility and value in doing so.
Substances chimiques
Soil
0
Phosphorus
27YLU75U4W
Nitrogen
N762921K75
Potassium
RWP5GA015D
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
757-770Informations de copyright
© 2019 International Society of Protistologists.
Références
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