Invertebrate Richness and Hatching Decrease with Sediment Depth in Neotropical Intermittent Ponds

Invertebrate Richness and Hatching Decrease with Sediment Depth in Neotropical Intermittent Ponds

Some groups of invertebrates from intermittent wetlands produce dormant stages in response to environmental fluctuations. Dormancy is a strategy to survive such fluctuations and to persist in extreme aquatic habitats, such as temporary habitats. We investigated the hatching responses of invertebrate...

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Bibliographic Details
Published in:Wetlands (Wilmington, N.C.) Vol. 43; no. 3; p. 24
Main Authors: de Oliveira Hoffmann¹, Pedro Henrique, Adolfo², Andressa, Piu², Allana Gonçalves, Vendramin², Daiane, Martins², Lidiane, Weber¹, Vinicius, Maltchik¹, Leonardo, Stenert, Cristina
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01-03-2023
Springer Nature B.V
Subjects:
Abundance
Aquatic ecosystems
Aquatic habitats
Aquatic organisms
Biomedical and Life Sciences
Coastal plains
Coastal Sciences
Composition
Dormancy
Drought
Ecology
Environmental Management
Experiments
Fluctuations
Freshwater & Marine Ecology
Generalized linear models
Hatching
Hydrogeology
Hypotheses
Invertebrates
Juveniles
Landscape Ecology
Life Sciences
Ponds
Sediments
Taxonomy
Variables
Wetland Ecology
Wetlands
Brazil
Dormant stages
Viability
Sediment column
Invertebrate hatchlings
Temporary wetlands
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Summary:Some groups of invertebrates from intermittent wetlands produce dormant stages in response to environmental fluctuations. Dormancy is a strategy to survive such fluctuations and to persist in extreme aquatic habitats, such as temporary habitats. We investigated the hatching responses of invertebrate dormant stages across different depths of sediment in intermittent ponds. Our hypotheses were: (1) the richness and abundance of invertebrate hatchlings decrease as the depth of the sediment column increases, and (2) the composition of invertebrate hatchlings varies over the wetland sediment depth. Four intermittent ponds were sampled in southern Brazil. One sediment column of 30 cm depth was collected in each pond and stratified into 1 cm thick slices for analysis of the dormant stages. A total of 1,931 hatchlings distributed among 31 taxa were collected from the sediment columns over the experiment. The total richness and abundance of hatchlings (after bdelloid taxa exclusion) were negatively related with the sediment depth. The composition of aquatic invertebrates varied among the different strata over the sediment depth. As intermittent wetlands are ecosystems extremely susceptible to climate variations, the results help to understand the resilience of aquatic resistant communities from different sediment strata after drought events.
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ISSN:0277-5212
1943-6246
DOI:10.1007/s13157-023-01675-6