The impacts of dumping sites on the marine environment: a system dynamics approach

Mousavi, S. Hooman; Kavianpour, Mohammad Reza; Alcaráz, Jorge Luis García

doi:10.1007/s13201-023-01910-9

Cited by 13 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For example, predation pressure and waste dumping at the mangroves [78] and sediment hardening and mangrove extension towards the mudflats [17,75] had caused habitat use shifts (from mangroves and mudflats to sand beaches) and reduced shorebird populations on the west coast [2,3,6]. Subsequent wall construction, waste dumping, and other adverse conditions [18,79] have resulted in dwindling beach areas, causing a gradual switching of foraging/roosting grounds to nearby agroecosystems [80][81][82]. There appears to be an increasing trend of shorebird diversity at agricultural lands (Figure 3) pointing towards the suitability of these as alternate habitats [83].…”

Section: Slow Switching Trends Of Shorebird Species To Agroecosystems...mentioning

confidence: 99%

Transitioning Wintering Shorebirds to Agroecosystem: A Thorough Evaluation of Habitat Selection and Conservation Concern

Byju,

Rubeena,

Shifa

et al. 2023

Diversity

View full text Add to dashboard Cite

Habitat fragmentation and degradation in natural wetlands has resulted in declines in the populations of shorebirds in the Indian subcontinent. Shorebirds rely on these wetlands as wintering or stop-over sites along the southern extent of the Central Asian Flyway. Shorebirds are known to utilize agroecosystems as alternate foraging habitats. The suitability of agroecosystems as foraging areas for overwintering migratory shorebirds has not been well studied in the Indian subcontinent. We conducted a comprehensive assessment of published literature and compiled field observations to investigate the importance of inland and coastal agroecosystems for shorebirds in India. We assessed the shorebird populations at natural wetlands: mudflats and mangroves of Kadalundi Vallikkunnu Community Reserve (KVCR) and Puthuvypu sand beach, as well as adjacent agroecosystems on the west coast of India, including Sanketham Wetlands, Manthalakkadavu, Vazhakkad, Elamaram, Kodinhi, and Kooriyad. On the east coast, we assessed the natural wetland habitats of Valinokkam, Point Calimere, and Pichavaram and evaluated inland agroecosystems in regions, such as Jammu and Kashmir, Punjab, Rajasthan, Gujarat, Uttar Pradesh, Tamil Nadu, and Kerala. Fifty-three shorebird species utilize diverse agroecosystems from various parts of India. While studies on the use of agroecosystems by shorebirds are limited on the east coast, evidence suggests that major wintering sites are adjacent to paddy fields, fostering substantial shorebird diversity. In Pichavaram, Point Calimere, and Gulf of Mannar regions, 22 shorebird species utilize agroecosystems, including the notable near-threatened Eurasian Curlew. Seventeen of these species are winter arrivals, highlighting the crucial role agroecosystems play as stopover areas. On the west coast, 19 shorebird species appear to utilize agroecosystems in Kooriyad, Manthalakkadavu, Vazhakkad, Sanketham Wetlands, Elamaram, and Kodinhi. Few species use agricultural fields in the north (Jammu and Kashmir). Paddy fields, that are flooded as part of the cropping cycle, support diverse prey species, such as macroinvertebrates, amphibians, and small fish, that could attract and support migratory shorebirds. Agricultural practices like fallowing, flooding, and ploughing could further increase the abundance and accessibility of prey for shorebirds, drawing them in greater numbers. It is crucial to recognize that unsustainable and unethical agricultural methods could detrimentally affect shorebird numbers. The accumulation of pesticide residues and the contamination from heavy metals could also threaten shorebirds. As a result, there is an urgent need for detailed research to better evaluate the importance of agroecosystems in supporting resident or migratory shorebirds. Systematic studies that explain the population dynamics, habitat selection trends, habitat utilization, and the over-summering behavior of the migratory birds at agroecosystems are needed. Implementing sustainable conservation strategies and adopting environmentally friendly agricultural practices are essential to support the rich biodiversity of the region.

show abstract

Section: Slow Switching Trends Of Shorebird Species To Agroecosystems...mentioning

confidence: 99%

Transitioning Wintering Shorebirds to Agroecosystem: A Thorough Evaluation of Habitat Selection and Conservation Concern

Byju,

Rubeena,

Shifa

et al. 2023

Diversity

View full text Add to dashboard Cite

show abstract

“…Coastal areas have been and continue to be used as dumping grounds in which heavy metal contaminants have become a serious issue and one of the main drivers of ecological degradation in marine ecosystems (Yasuhara et al, 2012;Mousavi et. al., 2023).…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of Tolerance in Metal-exposed Brown Algae and the Importance of Monitoring Studies: A Review

Montenegro

2024

Ecotoxicol. Environ. Contam.

View full text Add to dashboard Cite

Marine habitats are under threat from the continued release of contaminants into waterways, and monitoring becomes crucialto future management decisions and regulations to protect these environments. A key aspect of this monitoring is the choiceof a marine species that is able to cope with this pollution, and the tolerant species exhibit more relevant ecological responses.These species-responses are called biomarkers of tolerance and are tested using a variety of measurements that reflect exposureto chemicals. Marine brown macroalgae can be found in a wide range of marine environments, including those with high metalpollution and they are widely used in monitoring programs. Mechanisms of tolerance are vital to the survival of this group ofmacroalgae in polluted habitats, but these mechanisms have not yet been reviewed. The aim of this critical review article isto summarize the historical information available regarding metal tolerance in marine brown macroalgae. We review studiesabout tolerance mechanisms in marine brown macroalgae exposed to metals, conducted both under experimental conditionsand in the field. Also, bibliometric analyses are used to identify the most relevant investigations, country contributions andgaps in knowledge on the topic. Results showed that the principal extracellular tolerance mechanisms described for marinebrown macroalgae are physical exclusion, exudated ligands, and metal-binding to the cell wall. Epiphytic microorganismswere also found to be capable of accumulating a given metal. Internally, metallothioneins and phytochelatins were importantchelators; furthermore, antioxidant responses may increase metal tolerance. Omics analyses were used to reveal the internalmechanisms used by these macroalgae. Biomarkers of tolerance have occasionally been used in monitoring studies, providingadditional information regarding tolerance to complex chemical mixtures found in the field. Future studies should make use ofthese biomarkers to improve our understanding of metal-tolerance strategies.

show abstract

“…Up to now, most common management method for dredged marine sediments is sea dumping, i.e. the immersion at sea of the extracted sedimentary material (Mousavi, Kavianpour, et Alcaraz 2023). The second main destination is onshore management, where they require prior treatment before eventually being reclaimed or stored in special containment facilities (Achour et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Management of dredged marine sediments in southern France: main keys to large-scale beneficial re-use

DORLEON,

Rigaud,

Techer

2023

Preprint

View full text Add to dashboard Cite

Each year fifty million cubic meters of marine sediments are dredged in France to maintain and develop harbor activities and sustain the economy of littoral territories. Because of anthropogenic activities in and around harbours, bottom sediments can contain more or less significant amounts of chemical and organic pollutants whose behavior during dredging must be addressed in order to avoid releasing and risks for human and environment. French regulations come to govern the management of dredged marine sediments, considering them ‘safe’ and possibly to be dumped at sea or ‘contaminated’ and needed to be treated on land as waste. These last years, new constraints are pushing towards a management on land. This management is however challenging as few channels are proposed to promote or reuse marine sediments, and elimination appears to be economically and environmentally unsustainable. This study provides an overview of the technical and regulatory aspects related to dredged marine sediment management in France and aims to identify and discuss the limits or barriers of their valorization. Dredged sediments are mainly composed of particles with heterogeneous grain size, some being known for many applications such as building materials and growing media. However, several reasons have been put forward to explain why these particles are not reused when extracted from dredged sediments. Several technical, socio-economic and regulatory obstacles explain the low demand for dredged sediments. This demand can be stimulated by government incentives and a good regulatory framework. National regulations could help streamline the reuse of dredged sediments by standardizing sediment composition tests, removing the "waste" status attributed to dredged sediments and creating a regulated market for dredged sediment-based products, thus creating a promising economic sector.

show abstract

The impacts of dumping sites on the marine environment: a system dynamics approach

Cited by 13 publications

References 41 publications

Transitioning Wintering Shorebirds to Agroecosystem: A Thorough Evaluation of Habitat Selection and Conservation Concern

Transitioning Wintering Shorebirds to Agroecosystem: A Thorough Evaluation of Habitat Selection and Conservation Concern

Mechanisms of Tolerance in Metal-exposed Brown Algae and the Importance of Monitoring Studies: A Review

Management of dredged marine sediments in southern France: main keys to large-scale beneficial re-use

Contact Info

Product

Resources

About