NDLI: The role of deterministic factors and stochasticity on the trophic interactions between birds and fish in temporary floodplain ponds

Content Provider	Springer Nature Link
Author	Keppeler, Friedrich Wolfgang Cruz, Danielle Ajala Dalponti, Guilherme Mormul, Roger Paulo
Copyright Year	2016
Abstract	Trophic interaction between contiguous habitats is an understudied area despite their ecological importance. We tested four hypotheses related to the visit of foraging birds in temporary ponds inhabited by fish: the local characteristics of ponds influence the (1) abundance and (2) composition of foraging birds; (3) the number of foraging bird visits increases in higher fish abundance; and (4) pond characteristics lead to a non-random spatial structure of fish assemblage. We studied 18 temporary ponds in the floodplain area of Pantanal (center-west Brazil), where we measured environmental variables (pond size, depth, macrophyte coverage, and forest canopy coverage), recorded the number of foraging birds and sampled fish. Foraging birds’ abundance and composition were mainly influenced by forest canopy coverage and pond size, corroborating our first and second hypotheses. The hypotheses 3 and 4 were rejected. Fish abundance was not correlated with higher number of visits of foraging birds and fish distribution was random. Local environmental variables did not affect significantly fish richness and composition. Our results suggest that the abundance of foraging birds and fish presence are determined by different assembly processes (deterministic vs. random), which may limit ponds selection by birds due to the uncertainty in fish distribution and ephemeral nature of temporary ponds.
Starting Page	225
Ending Page	240
Page Count	16
File Format	PDF
ISSN	00188158
Journal	Hydrobiologia
Volume Number	773
Issue Number	1
e-ISSN	15735117
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-03-10
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Intermittent wetland Predator–prey dynamic Metacommunity Pantanal Freshwater & Marine Ecology Ecology Zoology
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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