Entanglement of Australian sea lions and New Zealand fur seals in lost fishing gear and other marine debris before and after Government and industry attempts to reduce the problem

Page, Brad; McKenzie, Jane; McIntosh, Rebecca R.; Baylis, Alastair M. M.; Morrissey, Adam Daniel; Calvert, Norna; Haase, T; Berris, Mel; Dowie, Dave; Shaughnessy, Peter D.; Goldsworthy, Simon

doi:10.1016/j.marpolbul.2004.01.006

Cited by 151 publications

(82 citation statements)

References 26 publications

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“…Marine mammals, such as pinnipeds, may be particularly susceptible to severe population depletion (Read et al 2006) because of their innate biological characteristics, being slow growing, long-lived animals, with low fecundity. Accidental entanglement has been reported to affect non-targeted populations of seals around the world (Baker et al 1998, Hanni & Pyle 2000, Page et al 2004.…”

Section: Introductionmentioning

confidence: 99%

Assessing accidental entanglement as a threat to the Mediterranean monk seal Monachus monachus

Karamanlidis¹,

Androukaki²,

Adamantopoulou³

et al. 2008

Endang. Species Res.

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The Mediterranean monk seal Monachus monachus is the most endangered seal in the world with < 600 ind. currently surviving. The species faces a number of threats to its survival: accidental entanglement has been identified as one of the most important amongst them. Here we made the first attempt to systematically describe the nature of this threat and assess its impact on Mediterranean monk seal populations. We based our study on information from an extensive literature review, questionnaires carried out in various locations in Greece and necropsies performed in Greece and in the Madeira Islands, Portugal. Our results indicate that accidental entanglement has been, and still is, a major threat to the species in its main distribution area in the northeastern Mediterranean, and that this threat may increase throughout the seal's range. Accidental entanglement occurs mainly with fishing nets, and affects mostly sub-adult seals. Short-term conservation actions should include the identification of critical pupping sites and their protection through the establishment and enforcement of protective measures. A long-term course of action will require detailed knowledge of the causes of accidental entanglement of Mediterranean monk seals in fishing gear.KEY WORDS: Endangered species · Mediterranean monk seal · Accidental entanglement · Conservation · Seal-fishery interactions · Greece · Madeira

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Section: Introductionmentioning

confidence: 99%

Assessing accidental entanglement as a threat to the Mediterranean monk seal Monachus monachus

Karamanlidis¹,

Androukaki²,

Adamantopoulou³

et al. 2008

Endang. Species Res.

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show abstract

“…Debris collected from other North Sea coastlines such as Germany, the Netherlands, Belgium, France, Norway and Denmark, has been largely attributed to shipping and fishing activity (Galgani et al, 2000;van Franecker et al, 2005;Vauck and Schrey, 1987). Furthermore, fishing gear, operational as well as floating fragments, has been shown to cause entangling and mortality of marine animals (Derraik, 2002) including seabirds (Bugoni et al, 2008;Simeone et al, 1999;Stempniewicz, 1994;Votier et al, 2011;Zador et al, 2008), cetaceans (Johnson et al, 2005;Neilson et al, 2009;Ramos et al, 2011;Robbins and Matilla, 2004), turtles (Carr, 1987), sharks (Sazima et al, 2002) and seals (Hanni and Pyle, 2000;Hofmeyr et al, 2006;Page et al, 2004).…”

Section: The Fishing Industry As a Source Of Marine Debris On Beachesmentioning

confidence: 99%

Fisheries as a source of marine debris on beaches in the United Kingdom

Unger

Harrison

2016

Marine Pollution Bulletin

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Marine debris from ships has persisted and remains a concern despite international agreements such as MARPOL. We report on an analysis of beach litter based on a data set established by the Marine Conservation Society (MSC) Beachwatch weekends. Debris collected around the UK was divided into three main types of debris: (1) plastic (2) fishing, (3) fishing related plastic and rubber. Correspondence analysis (CA) was used to examine patterns in the occurrence of debris types on a total of 1023 beaches and debris attributable to fishing was identified on clusters of beaches mainly located on the coasts of Scotland and along the English Channel. General Linear model (GLM) identified fishing as the highest explanatory factor when testing for relationships between litter and proximity to fishing ports and grounds. The results add to the growing body of evidence that the fishing industry is largely responsible for marine debris.

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“…During submersible dives images of marine debris, such as garbage and fishing gear, have been taken around the island. Estimates of baseline abundance and composition of litter are crucial to implement litter reduction policies (Page et al, 2004;Ryan et al, 2009). Here we present a percentage of immersions where marine debris was observed, and information about the places where it was found.…”

Section: Introductionmentioning

confidence: 99%

Observations of Litter Deposited in the Deep Waters of Isla del Coco National Park, Eastern Tropical Pacific

Naranjo‐Elizondo

Cortés

2018

Front. Mar. Sci.

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Marine debris is recognized as a major threat to biodiversity and can be found ubiquitously even in remote regions, including deep-sea environments. Isla del Coco National Park is known as one of the best protected areas around the world, a preferred diving destination, and is also renowned for large aggregations of pelagic species that attract illegal commercial fisheries. Despite its pristine reputation, this study demonstrates that anthropogenic debris can affect this remote and well protected area. Images of marine debris were taken using the DeepSee submersible, mainly plastic litter from fishing gear were found between 200 and 350 m depth. A total of 40 items of debris were found in 5.48% of 365 dives, 60% of the items were plastics, and local boat and fishing activities provided most of litter. Our aim with this research is to raise awareness about the potential problem of solid wastes and fishing gear deposited in the deep environments of Isla del Coco National Park and to explore the potential implications for the ecological integrity of this protected area, including ghost fishing and the possible ingestion of pollutants. These results provide useful management information for the area, especially if one considers the constant pressure of illegal fishing and tourism at Isla del Coco National Park.

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Entanglement of Australian sea lions and New Zealand fur seals in lost fishing gear and other marine debris before and after Government and industry attempts to reduce the problem

Cited by 151 publications

References 26 publications

Assessing accidental entanglement as a threat to the Mediterranean monk seal Monachus monachus

Assessing accidental entanglement as a threat to the Mediterranean monk seal Monachus monachus

Fisheries as a source of marine debris on beaches in the United Kingdom

Observations of Litter Deposited in the Deep Waters of Isla del Coco National Park, Eastern Tropical Pacific

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