Derelict fishing gear persists for decades and impacts marine species and underwater habitats. Agencies and organizations are removing significant amounts of derelict gear from marine waters in the United States. Using data collected from repeated survey dives on derelict gillnets in Puget Sound, Washington, we estimated the daily catch rate of a given derelict gillnet, and developed a model to predict expected total mortality caused by a given net based on entanglement data collected upon its removal. We also generated a cost:benefit ratio for derelict gear removal utilizing known true costs compared to known market values of the resources benefiting from derelict gear removal. For one study net, we calculated 4368 crab entangled during the impact lifetime of the net, at a loss of 19,656 dollars of Dungeness crab to the commercial fishery, compared to 1358 dollars in costs to remove a given gillnet, yielding a cost:benefit ratio of 1:14.5.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.marpolbul.2009.10.016 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Assessing the scale and ecological impact of derelict and discarded fishing gear across Thailand via the MARsCI citizen science protocol.
Mar Pollut Bull
August 2024
Marine and Coastal Resources Research Center, Eastern Gulf of Thailand, 309 Moo 1, Paknam Prasae, Kleang, Rayong 21170, Thailand.
South-East Asia is among the least studied regions for the growing issue of marine debris pollution, despite being a major contributor towards global marine debris. In the present study, we provide the preliminary results from the MARsCI project, a survey protocol designed to utilise citizen science to facilitate data collection on the ecological impact of discarded fishing gear (DFG) in Thailand. Over a three-year period, 103 surveys were carried out across Thailand, resulting in impact assessment of 606 pieces of DFG.
View Article and Find Full Text PDFInterannual variability in marine debris accumulation on Hawaiian shores: The role of North Pacific Ocean basin-scale dynamics.
Mar Pollut Bull
June 2024
Surfrider Foundation, Kaua'i Chapter, United States of America.
Community-based marine debris removal efforts on the Hawaiian Islands of Kaua'i and Hawai'i, spanning 2013-2022, provided large datasets and documented remarkable variations in annual amounts of debris, mainly from abandoned, lost and derelict fishing gear. To test the hypothesis that the influx of marine debris on Hawaiian shores is determined by the proximity of the North Pacific garbage patch, whose pattern changes under the control of large-scale ocean dynamics, we compared these observational data with the output of an oceanographic drift model. The high correlations between the total mass of debris collected and the model, ranging between r = 0.
View Article and Find Full Text PDFA quantitative comparison of macro-plastic debris between undisturbed and populous coastal ecosystems of West Bengal, India.
Mar Pollut Bull
May 2024
Department of Environmental Science, University of Calcutta, Kolkata 700019, India. Electronic address:
Unmanaged plastic debris from both terrestrial and aquatic sources is causing havoc on Indian coastlines. Tajpur Beach and Haliday Island were selected as two distinct coastal ecosystems in West Bengal for inventorying sighted macro-plastics, aiming to assess their distribution and compare pollution levels. This study employs a comprehensive methodological approach, integrating field-based observations along with lab-based measurements, and information derived from geospatial analysis.
View Article and Find Full Text PDFRetrieval operations of derelict fishing gears give insight on the impact on marine life.
Mar Pollut Bull
April 2024
UiT The Arctic University of Norway, Tromsø, Norway.
Abandoned, lost and discarded fishing gear (ALDFG), significantly impacts marine ecosystems and biodiversity by incidental capture known as ghost fishing. Such impacts were quantified during the Norwegian Directorate of Fisheries' annual ALDFG cleanup operation in September 2023 by examining the characteristics of retrieved ALDFG and recording the taxonomically sorted catch abundance and biomass. A total of 307 specimens equaling 382 kg of biomass were caught in the recovered gillnets and king crab pots.
View Article and Find Full Text PDFEconomic impacts of marine debris encounters on commercial shrimping.
Mar Pollut Bull
March 2024
Mississippi Commercial Fisheries United, Inc., Long Beach, MS, United States.
The commercial shrimping industry is subjected to myriad stressors that have led to financial hardships among industry members. One of these stressors is marine debris; however, there is limited understanding of the type and magnitude of impacts. Quantitative methods of estimating the economic impacts of marine debris on the commercial shrimping industry were developed.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!