Integration of α, β and γ components of macroinvertebrate taxonomic and functional diversity to measure of impacts of commercial sand dredging

Meng, Xingliang; Cooper, Keith; Liu, Zhenyuan; Li, Zhengfei; Chen, Juanjuan; Jiang, Xuan-Kong; Ge, Yihao; Xie, Zhicai

doi:10.1016/j.envpol.2020.116059

Cited by 14 publications

(6 citation statements)

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“…However, previous studies of other shallow lakes (Da ¸bkowski et al, 2016;Meng et al, 2018Meng et al, , 2020Zou et al, 2019) showed that dredging can cause a significant reduction in the macrobenthos species richness, abundance, biomass, and taxonomic and functional diversity indices. These negative consequences could be due to the direct removal of macrobenthos in the sediment (Meng et al, 2018(Meng et al, , 2021Piló et al, 2019) combined with alterations of physical environmental conditions (e.g., water depth and turbidity), thereby making the environment less suitable for these organisms (Robinson et al, 2005;Meng et al, 2018). We therefore recommend that dredging be stopped until studies can be conducted to confirm that this activity will not adversely affect the macrobenthos community in the long term.…”

Section: Management Insightsmentioning

confidence: 99%

“…Therefore, we recommend that if dredging continues, managers define an appropriate dredging depth to protect the macrobenthos and maintain high water transparency, thereby mitigating the consequences for the macrobenthos community composition. Furthermore, most studies indicated that macrobenthos species richness, abundance, and taxonomic diversity can eventually recover after dredging, and may even surpass the pre-dredging levels during the recovery period (Aldridge, 2000;Da ¸bkowski et al, 2016;Zawal et al, 2016;Piló et al, 2019;Meng et al, 2021). Thus, it will be necessary to provide a recovery period to promote restoration of the macrobenthos taxonomic and functional diversity.…”

Section: Management Insightsmentioning

confidence: 99%

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Spatial patterns of macrobenthos taxonomic and functional diversity throughout the ecotones from river to lake: A case study in Northern China

Yang

et al. 2022

Front. Ecol. Evol.

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Macrobenthos taxonomic and functional diversity are key indicators of ecosystem health. River–lake ecotones are key macrobenthos habitats. However, we don’t fully understand macrobenthos biodiversity patterns in these ecotones. We studied water environment, sediment heavy metal contents, and macrobenthos community, which we sampled simultaneously from 29 sampling sites along the Fu River–Baiyangdian Lake gradient in Northern China with five field surveys from 2018 to 2019. Six trait classes resolved into 25 categories were allocated to macrobenthos through a binary coding system. We used the RLQ framework (R, environmental variables; L, species of taxa; Q, traits) and fourth-corner analyses to evaluate the relationship between environmental variables and macrobenthos traits. Finally, we carried out variance partitioning to assess the contributions of environmental variables to variation of macrobenthos diversities. As the results, TN and TP contents in the river and lake mouths were lower than those in the adjacent river and lake, indicating that the river–lake ecotones played a role in purifying the water and buffering pollution. High taxonomic diversity of macrobenthos in the lake mouth and the presence of unique taxa in the two ecotones revealed edge effects, but the macrobenthos abundance and biomass were extremely low compared with those in the adjacent river and lake. We found no significant correlation between the taxonomic and functional diversity indices in the river and lake mouths. Water depth, water transparency, TN, and TP were the main water environmental drivers of macrobenthos taxonomic and functional diversity, explaining up to 45.5% and 56.2% of the variation, respectively. Sediment Cd, Cr, Cu, Pb, and Zn contents explained 15.1% and 32.8%, respectively, of macrobenthos taxonomic and functional diversity. Our results suggest that functional diversity approaches based on biological traits can complement taxonomic approaches in river–lake ecotones. Furthermore, improving water depth, transparency, eutrophication, and heavy metal pollution will improve macrobenthos diversity in these ecotones and maintain ecosystem health.

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Section: Management Insightsmentioning

confidence: 99%

Section: Management Insightsmentioning

confidence: 99%

Spatial patterns of macrobenthos taxonomic and functional diversity throughout the ecotones from river to lake: A case study in Northern China

Yang

et al. 2022

Front. Ecol. Evol.

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“…Rao's quadratic diversity index (Q) (Rao, 1982) is one of the most important FD metrics (Mouchet et al, 2010) that has been widely used to measure the effects of anthropogenic activities on the FD of aquatic organisms. In general, the observed pattern is a reduction in Q values for impacted areas (Desrosiers et al, 2019;Magliozzi et al, 2020;Meng et al, 2021).…”

Section: Calculating Functional Diversitymentioning

confidence: 93%

“…Rao's quadratic diversity index (Q) (Rao, 1982) is one of the most important FD metrics (Mouchet et al., 2010) that has been widely used to measure the effects of anthropogenic activities on the FD of aquatic organisms. In general, the observed pattern is a reduction in Q values for impacted areas (Desrosiers et al., 2019; Magliozzi et al., 2020; Meng et al., 2021). Nevertheless, Q suffers from some pitfalls (Chen et al., 2018; Liu & Rao, 1995; Pons & Petit, 1996), among which the fact that its range of values depends on the scale of the dissimilarities between the compared data sets is one of the most relevant.…”

Section: Methodsmentioning

confidence: 99%

Implications of macroinvertebrate taxonomic resolution for freshwater assessments using functional traits: The Paute River Basin (Ecuador) case

Sotomayor

Hampel

Vázquez

et al. 2021

Diversity and Distributions

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Aim:This study aimed at investigating the taxonomic resolutions (TRs) of benthic macroinvertebrates for freshwater assessments in the scope of the functional trait approach (FTA).Location: Macroinvertebrate samples were collected in 22 locations within the Paute River Basin (PRB), Ecuador, over three years (2010, 2011 and 2012).Methods: Biological traits were allocated as scores to the macroinvertebrate data (at genus level) through fuzzy coding, using published data. The scores of each genus were used to derive scores for the corresponding family. These two sets of scores were standardized and compared, they were similar in 82% of the cases. Functional diversity (FD) was described by the rRao index, which showed no significant differences between coarse (family level) and fine (genus level) TRs. Cluster analyses using the K-means algorithm were performed to determine similarities between both rRao data sets. The WQ cluster number (K) was varied between 2 and 5 to determine a threshold K value (K th ), after which a WQ assessment differed as a function of the TR being used.Results: K th was 3. Family-level identification in the framework of the FTA in the PRB was suitable in detecting changes of macroinvertebrate assemblages (until K th = 3). Main conclusions:The proposed methodology could be implemented in other basins where decision-makers could decide whether the level of functional trait data similarity is sufficient for WQ management purposes and whether the defined K th is acceptable. The reliability of the key methodological steps was assessed using performance statistics that have rarely been applied to ecological studies. Despite related research performed in other regions, the present study is the first South American attempt to investigate the effects of TR of benthic macroinvertebrates on freshwater bioassessments using functional traits.

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“…Unfortunately, studies on the effects of these receptors in the myocardium are very few and far between. One very recent study reported that intermedin, a CGRP‐like calcitonin‐related peptide, may protect cardiomyocytes against sarcoplasmic reticulum stress and cardiac apoptosis via, in part, PKA and subsequent SERCA activation [134]. Finally, the hormone calcitonin itself was very recently reported to be released by atrial cardiomyocytes to induce, in a paracrine manner, proliferation of and extracellular matrix protein secretion from closely associated fibroblasts [135].…”

Section: Cardiac Nanc Receptor Signalingmentioning

confidence: 99%

Signaling and function of cardiac autonomic nervous system receptors: Insights from the GPCR signalling universe

et al. 2021

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The two branches of the autonomic nervous system (ANS), adrenergic and cholinergic, exert a multitude of effects on the human myocardium thanks to the activation of distinct G protein-coupled receptors (GPCRs) expressed on the plasma membranes of cardiac myocytes, cardiac fibroblasts, and coronary vascular endothelial cells. Norepinephrine (NE)/epinephrine (Epi) and acetylcholine (ACh) are released from cardiac ANS terminals and mediate the biological actions of the ANS on the heart via stimulation of cardiac adrenergic or muscarinic receptors, respectively. In addition, several other neurotransmitters/hormones act as facilitators of ANS neurotransmission in the heart, taking part in the so-called nonadrenergic noncholinergic (NANC) part of the ANS's control of cardiac function. These NANC mediators also use several different cell membrane-residing GPCRs to exert their effects in the myocardium. Cardiac ANS dysfunction and an imbalance between the activities of its two branches underlie a variety of cardiovascular diseases, from heart failure and hypertension to coronary artery disease, myocardial ischemia, and arrhythmias. In this review, we present the main well-established signaling modalities used by cardiac autonomic GPCRs, including receptors for salient NANC mediators, and we also highlight the latest developments pertaining to cardiac cell type-specific signal transduction, resulting in cell type-specific cardiac effects of each of these autonomic receptors.

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Integration of α, β and γ components of macroinvertebrate taxonomic and functional diversity to measure of impacts of commercial sand dredging

Cited by 14 publications

References 50 publications

Spatial patterns of macrobenthos taxonomic and functional diversity throughout the ecotones from river to lake: A case study in Northern China

Spatial patterns of macrobenthos taxonomic and functional diversity throughout the ecotones from river to lake: A case study in Northern China

Implications of macroinvertebrate taxonomic resolution for freshwater assessments using functional traits: The Paute River Basin (Ecuador) case

Signaling and function of cardiac autonomic nervous system receptors: Insights from the GPCR signalling universe

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