Interannual and seasonal variability of macroinvertebrates in monsoonal climate streams

Mesa, Leticia Mariana

doi:10.1590/s1516-89132012000300011

Cited by 35 publications

(21 citation statements)

References 39 publications

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“…Certain traits may confer initial resilience to extreme flooding (i.e., the community remains at state A; outcome 2) or following flooding and outcome 1 such traits may be more common in the alternative state community so that after further flooding, the community is more resilient to disturbance and less likely to shift to state C (i.e., outcome 1b). For example, the trait of small body size may confer or improve resilience in hydraulically turbulent conditions (Segura, Siqueira, & Fonseca‐Gessner, ; Snook & Milner, ) because smaller body size facilitates access to refugia during high flows following storm events (Mesa, ). The persistence of a number of the smaller chironomid species following the extreme events documented here supports this idea, and small body size could also account for the observed resilience in the meiofaunal community following the two flooding events (Robinson, ).…”

Section: Discussionmentioning

confidence: 99%

River ecosystem resilience to extreme flood events

Milner

Picken

Klaar

et al. 2018

Ecology and Evolution

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Floods have a major influence in structuring river ecosystems. Considering projected increases in high‐magnitude rainfall events with climate change, major flooding events are expected to increase in many regions of the world. However, there is uncertainty about the effect of different flooding regimes and the importance of flood timing in structuring riverine habitats and their associated biotic communities. In addition, our understanding of community response is hindered by a lack of long‐term datasets to evaluate river ecosystem resilience to flooding. Here we show that in a river ecosystem studied for 30 years, a major winter flood reset the invertebrate community to a community similar to one that existed 15 years earlier. The community had not recovered to the preflood state when recurrent summer flooding 9 years later reset the ecosystem back to an even earlier community. Total macroinvertebrate density was reduced in the winter flood by an order of magnitude more than the summer flood. Meiofaunal invertebrates were more resilient to the flooding than macroinvertebrates, possibly due to their smaller body size facilitating greater access to in‐stream refugia. Pacific pink salmon escapement was markedly affected by the winter flood when eggs were developing in redds, compared to summer flooding, which occurred before the majority of eggs were laid. Our findings inform a proposed conceptual model of three possible responses to flooding by the invertebrate community in terms of switching to different states and effects on resilience to future flooding events. In a changing climate, understanding these responses is important for river managers to mitigate the biological impacts of extreme flooding effects.

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Section: Discussionmentioning

confidence: 99%

River ecosystem resilience to extreme flood events

Milner

Picken

Klaar

et al. 2018

Ecology and Evolution

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“…(). Mesa () found an increased abundance of Chironomidae and Baetidae during the low flow period; the author attributed this to their fast life cycle and near‐continuous reproduction that allow them to rapidly colonize disturbed areas. Although an increased abundance in Chironomidae was evident in the Isábena, Baetidae densities were markedly reduced during the summer.…”

Section: Discussionmentioning

confidence: 99%

Effects of flow and fine sediment dynamics on the turnover of stream invertebrate assemblages

et al. 2013

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Interactions between flow regime, sediment dynamics and benthic invertebrates have seldom been studied in rivers experiencing naturally high suspended sediment loads. This paper examines invertebrate responses to hydrological and sedimentary processes over an annual cycle in a morphologically heterogeneous reach of a river that receives large volumes of fine sediment. Flow regime and sedimentary conditions showed a marked seasonal pattern, with fine sediment accumulating during low flows and after small flood events and not being removed until the large floods that occurred in autumn. The magnitude of sediment accumulation differed between habitats (e.g. being greater in pools than in riffles). The turnover in invertebrate assemblages, measured as beta diversity, was greatest in winter and decreased during summer as deposited fine sediment accumulated across the reach, suggesting that observed patterns of turnover were influenced by seasonal and habitat‐specific rates of sedimentation. Some of the spatial and temporal patterns in invertebrate assemblages were subtle, complex and difficult to interpret, but co‐inertia analysis indicated an overriding influence of low flows and associated sedimentation on their composition. Floods capable of entraining coarser bed material, along with smaller events accompanied by extensive mobilization of fine sediment, also influenced assemblages and resulted in immediate changes to assemblage composition and abundance. Assemblages appeared to exhibit resilience over the timescale of the study, with similar assemblages found at the beginning and at the end of the study period. Copyright © 2013 John Wiley & Sons, Ltd.

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“…The influence of hydrological factors on benthic macroinvertebrate communities received increasing attention in the last decade (Belmar et al, ; Chang, Tsai, Tsai, & Herricks, ; Mesa, ). Several studies have shown that the prior hydrological flow conditions affect the temporality of habitats and the distribution of aquatic flora and fauna (Kennen, Riva‐Murray, & Beaulieu, ; Poff et al, ; Rolls, Leigh, & Sheldon, ).…”

Section: Introductionmentioning

confidence: 99%

“…The studies on altered ecosystems focus particularly on the effects on fish (i.e., Freeman et al, ; Armstrong, Kemp, Kennedy, Ladle, & Milner, ; Macnaughton et al, ) and less on macroinvertebrates (Armanini et al, ; Miller, Judson, & Rosenfeld, ). However, in the tropical zones, most of the studies concentrate on the temporal variability of the aquatic communities as a function of the season in the year (Jacobsen & Encalada, ; Mesa, ; Ríos‐Touma et al, ) without considering flood and drought discharge (i.e., hydrological) thresholds and their impact on aquatic communities. Exceptions hereon are the studies in altered rivers of Castro, Hughes, and Callisto (), Miserendino (), and Herrera and Burneo () that examined the response of macroinvertebrates and Lima et al () and García, Jorde, Habit, Caamaño, and Parra () of fish.…”

Section: Introductionmentioning

confidence: 99%

“…Studies at medium altitude in the Andean region report a decrease in the density and species richness on the seasonal and annual timescales mainly due to an increase in shear stress (SS) during heavy floods in the rainy season (Jacobsen & Encalada, 1998;Mesa, 2012;Ríos-Touma, Encalada, & Prat Fornells, 2011). In the high Andes, only few of such studies have been carried out so far.…”

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confidence: 99%

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Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador

et al. 2018

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This study assessed the effects of hydrological events on aquatic communities at the mesohabitat scale (pool, run, and riffle) in the high Andean region. Four headwater sites located in the Zhurucay microcatchment (southern Ecuador), with elevations higher than 3,500 m, were selected and monitored considering in each site a 50‐m‐long reach and within each reach five cross sections. In each of these reaches, 19 sampling campaigns were conducted in the period December 2011–October 2013, collecting macroinvertebrates and physical characteristics. A total of 27 hydrological indices were calculated using the daily flow rate as input. Large peak flow, small peak flow, and low flow (LF) events were defined based on discharge thresholds. Multivariate statistics showed that 14 hydrological indices were significantly related to the aquatic community. Further, the study revealed that (a) peak events produced stronger effects on communities than LF events, (b) the observed effects of LF events were weaker than those encountered in other latitudes, and (c) local benthic communities have more resilience than similar communities studied in other latitudes.

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Interannual and seasonal variability of macroinvertebrates in monsoonal climate streams

Cited by 35 publications

References 39 publications

River ecosystem resilience to extreme flood events

River ecosystem resilience to extreme flood events

Effects of flow and fine sediment dynamics on the turnover of stream invertebrate assemblages

Hydrological influences on aquatic communities at the mesohabitat scale in high Andean streams of southern Ecuador

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