Macroecotoxicological approaches to emerging patterns of microplastic bioaccumulation in crabs from estuarine and marine environments

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 870, P. 161912 - 161912

Published: Jan. 31, 2023

Language: Английский

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Effects of Ecological Restoration Using Non-Native Mangrove Kandelia obovata to Replace Invasive Spartina alterniflora on Intertidal Macrobenthos Community in Maoyan Island (Zhejiang, China)

Journal of Marine Science and Engineering, Journal Year: 2021, Volume and Issue: 9(8), P. 788 - 788

Published: July 22, 2021

Spartina alterniflora has extensively invaded the coastline of China, including in Maoyan Island Zhejiang Province. Ecological restoration been conducted using non-native mangrove Kandelia obovata to replace S. an attempt restore impacted intertidal zones. To illustrate ecological effectiveness projects, macrobenthos communities were studied among different habitats within restored areas, one non-restored marsh (SA) and three differently-aged K. stands planted 2003, 2009, 2011 respectively (KF14, KF8, KF6). Besides, unvegetated mudflat (MF) adjacent forest transplanted 2006 (RKF) at a previously barren without invasion history set as reference sites. A total 69 species collected from Island, richness was dominated by gastropoda (23 species), polychaeta (18 malacostraca (16 species). There no significant difference between six sites terms abundance macrobenthos, with average values peaking KF6 (734.7 ind m−2) being lowest RKF (341.3 m−2). The had differences biomass macrobenthos. KF8 site contained highest (168.3 g m−2), whereas MF (54.3 Shannon-Wiener diversity index Pielou’s evenness did not exhibit However, results permutational multivariate analysis variance (PERMANOVA) revealed spatial community structure Since KF14 shared similar RKF, while representing strikingly SA, we infer that can resemble normally about 15 years after restoration.

Language: Английский

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Nutrient Detection Sensors in Seawater Based on ISI Web of Science Database

Journal of Sensors, Journal Year: 2022, Volume and Issue: 2022, P. 1 - 12

Published: March 7, 2022

Marine ecosystem is increasingly deteriorating. In order to assess anthropogenic influence and instigate appropriate remedial actions, it still of great significance develop the technology sensors applied for nutrient detection (e.g., nitrate, phosphate, silicate) in seawater. This brief review shows an important direction development seawater also limitations challenges based on data from ISI Web Science database. Being different previous papers, this short critical paper (1) we unified unit limit (LOD) making comparison within researches possible; (2) only literatures focusing technological were used; (3) not methods but detected analytes publication years discussed supply more valuable information total, 109 collected with regard development. The quantity has increased most during 2011-2020. For analytes, related ammonium, phosphate will continue increase accurate data. methods, spectrophotometry, colorimetry, fluorimetry, electrochemistry are widely used sensors. LODs show thousands orders. general, there lower LOD nitrite ammonium fluorimetry method. Now, nitrate 1.0983 > silicate 0.5495 phosphate 0.4823 ammonium 0.1324 nitrite 0.0568 . microfluidics 1.7617 > electrochemistry 1.2607 colorimetry 0.4462 spectrophotometry 0.2941 fluorimetry 0.0558 result indicated that level closer nitrite, silicate. spectrophotometry significantly than ( p < 0.05 ), p < 0.05 ). Our results imply should be developed future. addition, considered by future

Language: Английский

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Drivers of the spatiotemporal patterns of the mangrove crab metacommunity in a tropical bay

Ecology and Evolution, Journal Year: 2023, Volume and Issue: 13(6)

Published: June 1, 2023

Abstract Revealing community patterns and driving forces is essential in ecology a prerequisite for effective management conservation efforts. However, the mangrove ecosystem its important fauna group such as crabs, still lack multi‐processes research under metacommunity framework, resulting evidence theorical application gaps. To fill these gaps, we selected China's most representative bay reserve tropical zone stable experimental system conducted seasonal investigation (July 2020, October January 2021, April 2021) of crabs. We performed multi‐approach analysis using both pattern‐based mechanistic method to distinguish processes crab metacommunity. Our results showed that exhibits Clementsian pattern bay‐wide but influenced by local environmental heterogeneity spatial processes, thus representing combined paradigm species sorting mass effect. Moreover, long‐distance constraints are more pronounced compared factors. This reflected greater importance broad‐scale Moran's Eigenvector Maps, distance‐decay similarity, difference beta diversity dominated turnover component. changes throughout year, mainly due dominant functional groups caused stress water salinity temperature induced air precipitation. provides multi‐dimension data relevant analysis, offering clear understanding related mangroves, verifies applicability some general laws system. Future studies can address diverse spatiotemporal scales, gaining clearer serve ecosystems economically fishery species.

Language: Английский

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Diluted Seawater and Ammonia-N Tolerance of Two Mangrove Crab Species. New Insights to Understand the Vulnerability of Pristine Islands Ecosystems Organisms

Frontiers in Ecology and Evolution, Journal Year: 2022, Volume and Issue: 10

Published: March 3, 2022

Mangrove ecosystems are the primary receptors of anthropogenic pollution in tropical areas. Assessing vulnerability these can be expressed, among other indicators, by studying health ‘ecosystem engineers’. In this study, mangrove forests facing opposing pressures were studied (i) uninhabited island Europa (Mozambique Channel), considered as a pristine ecosystem, and, (ii) on Mayotte, regular domestic wastewater discharges. Using an ecophysiological approach, effects diluted seawater (DSW) and increased ammonia-N for two fiddler crab species: Gelasimus tetragonon (GT) Paraleptuca chlorophthalmus (PC) Mayotte. Osmoregulation curves osmoregulatory capacity determined along with O 2 consumption rates after 96 h exposure period. Histological analyses also carried out important metabolic organs: hepatopancreas posterior gills. Results indicate that both species good hyper-hypo-osmoregulators but only PC maintain its when exposed to ammonia-N. Oxygen is GT does not occur PC. Finally, thickening gill epithelium was observed ammonium GT. Therefore, do have same tolerance DSW shows physiological acclimation capacities order better manage nitrogenous enrichments. did show plasticity could more at risk kind stress. These results those from studies regarding effluents crabs discussed. greater organisms occupying induce major changes functioning if crabs, engineer about reduce their bioturbation activity or, even, disappear forests.

Language: Английский

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Individual metabolism and behaviour as complementary endpoints to better understand mangrove crab community variations linked to wastewater inputs

Ecotoxicology and Environmental Safety, Journal Year: 2022, Volume and Issue: 236, P. 113487 - 113487

Published: April 8, 2022

Mangrove forests are impacted by a large range of anthropogenic activities that challenge their functioning. For example, domestic wastewater (WW) discharges known to increase vegetation growth but recent studies indicate they have negative effects on benthic macrofauna, especially mangrove crabs, these ecosystem engineers playing key role the functioning mangrove. In experimental areas regularly receiving WW at low tide (Mayotte Island, Indian Ocean), drastic decrease in burrowing crab density has been reported. this context, individual behavioural and physiological responses fiddler Paraleptuca chlorophthalmus exposed short-term (6 h) pulse ammonia-N (as potential proxy WW) were investigated. This species is one most sensitive within community. experiment, crabs could choose between aquatic aerial environment. Individual metabolic rate (O2 consumption) was monitored after 6 h exposure or ammonia-N. Aerobic anaerobic markers (citrate synthase lactate dehydrogenase activities, respectively) also evaluated. Results more active mobile than controls 3 h. Crabs actively emersed from reduced activity mobility A higher occurred immediately (t = 0 h), exposure, with also, burst aerobic bacterial consumption WW, no effect No observed enzymatic markers. Therefore, pulses polluted trigger quick be deleterious if prolonged. These results contribute understanding community-scale changes macrofauna several years regular pollution pulses.

Language: Английский

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Population density and distribution patterns of Austruca annulipes (Ring-legged fiddler crab) in the mangrove of Bogowonto Estuary, Kulon Progo, Yogyakarta, Indonesia

International Journal of Bonorowo Wetlands, Journal Year: 2023, Volume and Issue: 13(1)

Published: Feb. 1, 2023

Abstract. Fadilah RN, Yulia IT, Alfitra ZS, Armadhan WS, Widyaningtyas R, Rahmayani D, Permatasari DP, Igustita, Kusuma Prambudi SA, Berlin GE, Triyanto A, Sutarno, Indrawan M, Dadiono MS, Rahim KABA, Setyawan AD. 2023. Population density and distribution patterns of Austruca annulipes (Ring-legged fiddler crab) in the mangrove Bogowonto Estuary, Kulon Progo, Yogyakarta, Indonesia. Intl J Bonorowo Wetlands 13: 1-8. The forest ecosystem is a with coastal plant characteristics that are influenced by tides tolerate high salt levels. Mangrove forests Indonesia contain about 89 species flora, around 18% their fauna keystone species. Keystone play an important role maintaining balance ecosystem. (H. Milne-Edwards, 1837), or Ring-legged crab one ecosystem, which has food chain nitrogen cycle, so study this very for sustainability area. This aimed to determine population A. Estuary Area, research method was purposive random sampling using 10m x square plot. Furthermore, identification morphology documentation activities carried out, data were examined calculations density. Based on finding, 0.9975 individuals/m2. Calculating Morisita Index obtained value 1.38 category clumped patterns. Various factors influence distribution, including abiotic such as soil moisture, temperature, air, salinity, pH. In addition, presence vegetation also affected because it used shelter foraging among its roots.

Language: Английский

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Grooming and agonistic behaviors in the semi-terrestrial crabsOcypode quadrata(Fabricius, 1787) andMinuca(Uca) burgersi(Holthuis, 1967) (Decapoda: Brachyura: Ocypodidae)

Journal of Crustacean Biology, Journal Year: 2023, Volume and Issue: 43(2)

Published: June 1, 2023

Abstract Grooming behaviors reduce body fouling and are well documented in crustaceans. There more detailed laboratory-based grooming studies on fully aquatic crabs compared to semi-terrestrial crabs. By contrast, predicted have different time budgets than because not constantly submerged water that can mechanically remove sedimentary fouling, whereas crustaceans increased from algae epibionts. We studied the of two crab species. Crabs (N = 50 ghost crabs, Ocypode quadrata (Fabricius, 1787); N fiddler Minuca (Uca) burgersi (Holthuis, 1967)) were observed isolation for 45-min trials. recorded frequency, location, appendage, time. Ghost also agonistic encounters determine how varied presence a conspecific individual. budgets, (0.526 0.895%, respectively) with both species having lower Some similarities differences between exist, frequently their eyes maxillipeds using brush or scrape mechanism, but as appendage males groom less females, females equally. In interactions budget decreased isolated observations individuals engaged “playing dead” behavior (thanatosis) after engaging fight. Semi-terrestrial found significantly

Language: Английский

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