Marine Debris Trends: 30 Years of Change on Ventura County and Channel Island Beaches

Miller, Michaela R.; Steele, Clare; Horn, Dorothy A.; Hanna, Cause

doi:10.3398/064.078.0308

Cited by 5 publications

(7 citation statements)

References 45 publications

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“…Abandoned, lost or discarded fishing gear (ALDFG) also known as 'ghost gear' has been widely recognised as one of the most important components of debris in our oceans (Watter et al 2010;Hardesty et al 2015;Stelfox et al 2016;Wilcox et al 2016;Consoli et al 2018;Miller et al 2018). Historically, the majority of fishing gear was made from natural materials such as cotton, coconut or hemp.…”

Section: Introductionmentioning

confidence: 99%

Minimum drift times infer trajectories of ghost nets found in the Maldives

Stelfox

Lett

Reid

et al. 2020

Marine Pollution Bulletin

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This study explores methods to estimate minimum drift times of ghost nets found in the Maldives with the aim of identifying a putative origin. We highlight that percentage cover of biofouling organisms and capitulum length of Lepas anatifera are two methods that provide these estimates. Eight ghost nets were collected in the Maldives and estimated drift times ranged between 7.5 to 101 days. Additionally, Lagrangian simulations identified drift trajectories of 326 historical ghost nets records. Purse seine and gill nets are found to fisheries that overlap ghost net drift trajectories between 30 and 120 days. However, ghost nets below 30 days remain inside the exclusive economic zone of the Maldivian archipelago highlighting potential illegal, unreported and unregulated fishing activity. This study highlights the urgent need for gear loss reporting by purse seine and gill net fisheries and improved data on spatial distribution in the area from large-and small-scale fisheries.

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Section: Introductionmentioning

confidence: 99%

Minimum drift times infer trajectories of ghost nets found in the Maldives

Stelfox

Lett

Reid

et al. 2020

Marine Pollution Bulletin

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“…The start and end points for each 100m transect were recorded, and the perimeter of the transect was mapped using GPS to calculate the area of each transect. All AMD greater than 5mm in diameter was collected and categorized according to the methods of Lippiatt et al (2013) except that we created subcategories within the broad 'plastics' category to enable comparison with a historic data set from the CINP (Cole, 1998;Miller et al, 2018), and added a category for ALDFG (Table 1). Lippiatt et al (2013) has one category of plastics, while the historic CINP database split plastic into three types: miscellaneous plastics, plastic packaging, and personal effects.…”

Section: Quantifying Initial Density Of Macro-debrismentioning

confidence: 99%

“…In coastal Southern California (Figure 1), marine macroand micro-debris is pervasive in coastal watersheds and epibenthic environments throughout the Southern California Bight (SCB) (McLaughlin et al, 2022), as well as on the more remote shorelines of the California Channel Islands, (Cole, 1998, Whitmire et al, 2017, Miller et al, 2018. In this region there are various harbors, storm drains, watersheds, vessels, dense urban populations, commercial and recreational fisheries, and international shipping lanes which all can contribute to marine debris entering the SCB and potentially depositing on island shorelines (Moore et al, 2011;Ribic et al, 2012;McLaughlin et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…The highly populated mainland coast, with 17.8 million inhabitants in 5 coastal counties (U.S. Census Bureau, 2020), and the vast stretches of isolated beaches in the Channel Islands National Park (population <10, U.S. Census Bureau, 2020) have variable types and abundances of marine debris on shorelines (Miller et al, 2018). Despite the proximity of the northern Channel Islands to urban centers on the California mainland, there are no permanent island residents, and these seldom-visited beaches are not easily accessible by vehicle or boat.…”

Section: Introductionmentioning

confidence: 99%

“…Beaches on the Channel Islands are vulnerable to accumulation of marine litter from nearby mainland sources and debris from fishing activities nearby, particularly lobster-fishing industry activities concentrated in nearshore habitats (Guenther et al, 2015). A previous study of four beaches on Santa Rosa Island (Arlington Canyon, Cluster Point Sandy Point, Skunk Point), one of the five islands in the Channel Islands National Park, found that the relative proportion of ALDFG had significantly increased on all beaches between surveys conducted 1989-1993(Miller et al, 2018.…”

Section: Introductionmentioning

confidence: 99%

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Temporal trends in anthropogenic marine macro-debris and micro-debris accumulation on the California Channel Islands

Steele

Miller

2022

Front. Mar. Sci.

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Accumulation of anthropogenic marine debris on shorelines is an issue of global concern, even impacting areas that are remote, uninhabited, or have protected area status. On islands in Southern California, USA, within the boundaries of a National Park and National Marine Sanctuary, we collected macro-debris on beaches and assessed micro-debris in beach sediment seasonally between 2016-2020. Macro-debris (>5mm) was collected from seven beaches on two California Channel Islands and two sites on the mainland. We assessed both the number of items collected and total mass of debris. Composition of macro-debris items was dominated by plastics, particularly fragmented hard and foamed plastics and food packaging. A substantial quantity of lost or discarded fishing gear was collected, with the most fishery-related debris found at sites with historically highest spiny lobster fishing effort. The initial density of debris items ranged from 0.01-0.13 items m-2 and the initial density of debris mass ranged from 0.01-0.02 kg m-2. Mean accumulation rates of debris were strongly site-dependent and ranged from 0.03-0.34 items m-2 yr-1 and 0.01-0.05 kg m-2 yr-1, and tended to be highest in the fall and winter months. Anthropogenic micro-debris (<5mm) was found in beach sediment at all sites. Micro-debris had no statistically significant relationship with accumulation rates of total macro-debris items, or plastic macro-debris items. There were, however, statistically significant relationships between accumulation rates of total macro-debris mass and plastic macro-debris mass. We compared the rate of accumulation of fishing debris items and mass during the lobster season (October-March) for the years 2017 to 2020. The accumulation of fishery-related debris differed significantly among sites, with apparent declines over time, likely reflecting declining effort in the fishery and trap-limit regulations implemented in the 2017-2018 season. Our assessment of marine debris accumulation on California Channel Island beaches has provided detailed information on the types of debris and patterns of accumulation. Unfortunately, remoteness from direct human impact and protected-area status does not protect these habitats against the onslaught of marine litter. Assessments of marine debris are critical to identify sources, to inform policy and to support efforts to reduce the impact of marine litter on vital coastal ecosystems.

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Investigating sustainability tensions and resolution strategies in the plastic food packaging industry—A paradox theory approach

Farrukh,

Sajjad

2023

Bus Strat Env

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Increasing food waste, natural resource depletion, and climate change issues have forced plastic food packaging (PFP) companies to align their business strategies with sustainability aspects. At the same time, however, companies operating in the food packaging industry continue to face tensions while pursuing divergent sustainability goals simultaneously. Drawing on paradox theory, this study aims to examine paradoxical sustainability tensions in the PFP industry and propose potential resolution strategies to resolve diverse tensions arising from addressing competing social, economic, and environmental concerns simultaneously. To this end, we employed a qualitative research methodology and interviewed 15 senior corporate managers and consultants in the PFP industry. Based on the empirical data, we develop categories of sustainability tensions related to operations and supply chain, recycling, and external stakeholders associated with performing, organizing, learning, and belonging paradoxes. Further, we propose resolution strategies including multi‐stakeholder collaboration, research and innovation, circular economy, and use of integrated business strategies which are aligned with the acceptance, spatial separation, temporal separation, and synthesis approaches of the paradox theory. To the best of our knowledge, it is one of the early studies that embrace a paradox lens to investigate the sustainability tensions and resolution strategies in the PFP industry. Further, the study results could guide practitioners and policymakers in the PFP industry to comprehend underlying paradoxical sustainability tensions and promote resolution strategies to address divergent yet desirable economic, social, and environmental considerations simultaneously.

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Marine Debris Trends: 30 Years of Change on Ventura County and Channel Island Beaches

Cited by 5 publications

References 45 publications

Minimum drift times infer trajectories of ghost nets found in the Maldives

Minimum drift times infer trajectories of ghost nets found in the Maldives

Temporal trends in anthropogenic marine macro-debris and micro-debris accumulation on the California Channel Islands

Investigating sustainability tensions and resolution strategies in the plastic food packaging industry—A paradox theory approach

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