Warming and imidacloprid pulses determine macroinvertebrate community dynamics in experimental streams

2021 ◽  
Author(s):  
Samuel J. Macaulay ◽  
Kimberly J. Hageman ◽  
Jeremy J. Piggott ◽  
Noël P.D. Juvigny‐Khenafou ◽  
Christoph D. Matthaei
Keyword(s):  
Community Dynamics ◽  
Macroinvertebrate Community

Testing for temporal coherence across spatial extents: the roles of climate and local factors in regulating stream macroinvertebrate community dynamics

Ecography ◽  
2013 ◽  
Vol 37 (6) ◽  
pp. 599-608 ◽  
Author(s):  
Kaisa-Leena Huttunen ◽  
Heikki Mykrä ◽  
Ari Huusko ◽  
Aki Mäki-Petäys ◽  
Teppo Vehanen ◽  
...  
Keyword(s):  
Community Dynamics ◽  
Temporal Coherence ◽  
Macroinvertebrate Community ◽  
Local Factors ◽  
Stream Macroinvertebrate

scholarly journals Exploring the potential of metabarcoding to disentangle macroinvertebrate community dynamics in intermittent streams

2020 ◽  
Vol 4 ◽  
Author(s):  
Alex Laini ◽  
Arne J. Beermann ◽  
Rossano Bolpagni ◽  
Gemma Burgazzi ◽  
Vasco Elbrecht ◽  
...  
Keyword(s):  
Community Assembly ◽  
Beta Diversity ◽  
Community Dynamics ◽  
Macroinvertebrate Community ◽  
Taxonomic Resolution ◽  
Accurate Information ◽  
Morphological Identification ◽  
Intermittent Streams ◽  
Diversity Patterns ◽  
Taxonomic Sufficiency

Taxonomic sufficiency represents the level of taxonomic detail needed to detect ecological patterns to a level that match the requirement of a study. Most bioassessments apply the taxonomic sufficiency concept and assign specimens to the family or genus level given time constraints and the difficulty to correctly identify species. This holds particularly true for stream invertebrates because small and morphologically similar larvae are hard to distinguish. Low taxonomic resolution may hinder detecting true community dynamics, which thus leads to incorrect inferences about community assembly processes. DNA metabarcoding is a new, affordable and cost-effective tool for the identification of multiple species from bulk samples of organisms. As it provides high taxonomic resolution, it can be used to compare results obtained from different identification levels. Measuring the effect of taxonomic resolution on the detection of community dynamics is especially interesting in extreme ecosystems like intermittent streams to test if species at intermittent sites are subsets of those from perennial sources or if independently recruiting taxa exist. Here we aimed to compare the performance of morphological identification and metabarcoding to detect macroinvertebrate community dynamics in the Trebbia River (Italy). Macroinvertebrates were collected from four perennial and two intermittent sites two months after flow resumption and before the next dry phase. The identification level ranged from family to haplotype. Metabarcoding and morphological identifications found similar alpha diversity patterns when looking at family and mixed taxonomic levels. Increasing taxonomic resolution with metabarcoding revealed a strong partitioning of beta diversity in nestedness and turnover components. At flow resumption, beta diversity at intermittent sites was dominated by nestedness when family-level information was employed, while turnover was evidenced as the most important component when using Operational Taxonomic Units (OTUs) or haplotypes. The increased taxonomic resolution with metabarcoding allowed us to detect species adapted to deal with intermittency, like the chironomid Cricotopus bicinctus and the ephemeropteran Cloeon dipterum. Our study thus shows that family and mixed taxonomic level are not sufficient to detect all aspects of macroinvertebrate community dynamics. High taxonomic resolution is especially important for intermittent streams where accurate information about species-specific habitat preference is needed to interpret diversity patterns induced by drying and the nestedness/turnover components of beta diversity are of interest to understand community assembly processes.

An experimental analysis of crayfish (Orconectes rusticus) effects on a Dreissena-dominated benthic macroinvertebrate community in western Lake Erie

1998 ◽  
Vol 55 (4) ◽  
pp. 1043-1050 ◽  
Author(s):  
Timothy W Stewart ◽  
Jeffrey G Miner ◽  
Rex L Lowe
Keyword(s):  
Great Lakes ◽  
Trophic Interactions ◽  
Lake Erie ◽  
Community Dynamics ◽  
Macroinvertebrate Community ◽  
Trophic Levels ◽  
Benthic Macroinvertebrate ◽  
Orconectes Rusticus ◽  
Western Lake ◽  
Western Lake Erie

Quantitative descriptions of trophic interactions between Dreissena (zebra and quagga mussels) and other organisms are needed for an understanding of Dreissena's effects on energy flow and community dynamics in the Great Lakes. We used a field experiment to quantify effects of crayfish (Orconectes rusticus) predation on a Dreissena-dominated benthic macroinvertebrate community in western Lake Erie. Rocks colonized by Dreissena and associated macroinvertebrates were placed in cages and cageless reference plots located at a depth of 4 m. Crayfish (0, 8.3, and 20.8 individuals ·m-2) placed in cages were allowed to graze for 28 days. Dreissena had a greater effect than crayfish on the macroinvertebrate community, with positive relationships observed between Dreissena densities and both total macroinvertebrate biomass and densities of the amphipod Gammarus fasciatus. However, crayfish at densities of 20.8 individuals ·m-2 still reduced non-Dreissena macroinvertebrate biomass and Gammarus densities by 33 and 37%, respectively, relative to crayfish exclosures. Crayfish had negligible effects on Dreissena densities or shell length frequency distribution. Because crayfish and amphipods are prey for several fish species, trophic interactions among Dreissena, amphipods, and crayfish may be important in channeling energy from Dreissena to higher trophic levels in the Great Lakes.

Macroinvertebrate production in a headwater stream during recovery from anthropogenic disturbance and hydrologic extremes

1995 ◽  
Vol 52 (11) ◽  
pp. 2402-2422 ◽  
Author(s):  
Matt R. Whiles ◽  
J. Bruce Wallace
Keyword(s):  
Organic Matter ◽  
Anthropogenic Disturbance ◽  
Community Dynamics ◽  
Life Cycles ◽  
Headwater Stream ◽  
Macroinvertebrate Community ◽  
Insecticide Treatment ◽  
Coarse Particulate Organic Matter ◽  
Reference Stream ◽  
Hydrologic Extremes

Recovery of the macroinvertebrate community inhabiting a headwater stream (catchment 54; C54) that received 3 years of seasonal insecticide treatment was investigated. Estimates of abundance, biomass, and production in C54 during 1989 and 1990 were compared with those of a nearby undisturbed reference stream (catchment 55; C55), and those of C54 during a pretreatment year (1985). Total macroinvertebrate abundance was similar throughout pretreatment, treatment, and recovery periods of C54. In contrast, biomass and production, which decreased during treatment, increased to levels similar to those of C54 in the pretreatment year and those of the reference stream during recovery. By 1990, the functional structure of C54 was similar to that of C55 and that of C54 before the treatment. However, taxonomic and developmental stage differences within some functional groups, particularly shredders, persisted. Despite poor recovery of some larger shredder taxa, rapid recovery of a relatively small trichopteran shredder, Lepidostoma spp., contributed significantly to recovery of ecosystem processes associated with shredders. Relationships between shredder biomass and coarse particulate organic matter differed during treatment and recovery periods. Invertebrate taxa with shorter life cycles recolonized rapidly, while those with life cycles > 1 year generally displayed limited recovery. Hydrologic extremes during treatment (drought) and recovery (wet) periods affected organic matter and macroinvertebrate community dynamics in both streams, and may have influenced observed recovery patterns.

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