2000
DOI: 10.1006/jmsc.2000.0917
|View full text |Cite
|
Sign up to set email alerts
|

Mortality in megafaunal benthic populations caused by trawl fisheries on the Dutch continental shelf in the North Sea in 1994

Abstract: We estimated the direct mortality of benthic fauna caused by one single passage of commercial beam and otter trawls in field experiments. The benthos dredge Triple-D was used to sample megafauna (>1 cm), while macrofauna (>1 mm) were sampled by means of a Reineck boxcorer and, in some cases, a van Veen grab. Direct mortalities ranging from about 5 up to 40% of the initial densities were observed for a number of gastropods, starfishes, small and medium-sized crustaceans, and annelid worms. For bivalve species, … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1
1

Citation Types

2
77
0
2

Year Published

2000
2000
2018
2018

Publication Types

Select...
9
1

Relationship

0
10

Authors

Journals

citations
Cited by 127 publications
(85 citation statements)
references
References 15 publications
2
77
0
2
Order By: Relevance
“…We assumed a 40-fold difference (s ÂŒ 40) in trawling vulnerability between susceptible and resistant benthos groups. This is in line with direct beam trawl mortality estimates of 20-30% for susceptible and less than 0.5% for resistant species, particularly annelids [30]. However, trawling vulnerability between susceptible and resistant benthos groups may vary dependent on type of trawl and habitat [7].…”
Section: (D) Asymmetry In Prey Profitabilitysupporting
confidence: 79%
“…We assumed a 40-fold difference (s ÂŒ 40) in trawling vulnerability between susceptible and resistant benthos groups. This is in line with direct beam trawl mortality estimates of 20-30% for susceptible and less than 0.5% for resistant species, particularly annelids [30]. However, trawling vulnerability between susceptible and resistant benthos groups may vary dependent on type of trawl and habitat [7].…”
Section: (D) Asymmetry In Prey Profitabilitysupporting
confidence: 79%
“…Trawling leads to mortality in benthic invertebrates and fishes, but the rates may be lower for the smallest individuals within and among species, as small organisms may be pushed aside by the pressure wave in front of the trawl (Gilkinson et al 1998), or escape from the trawl through the mesh. Larger individuals usually suffer higher mortality when they are in the path of the trawl (Bergman & van Santbrink 2000). Hence, fishing activity may change the community size spectrum structure (Rice & Gislason 1996, Bianchi et al 2000, Duplisea et al 2002.…”
Section: Methodsmentioning
confidence: 99%
“…It is of crucial importance that there is general agreement among the involved stakeholders that the constraints under which they are asked to operate are valid and sensible. The direct effects of the most prevalent types of fishing gear on the North Sea seafloor habitat and its ecosystem have been shown (van Denderen et al, 2014, Bergman and van Santbrink, 2000, Depestele et al, 2015, but the recovery after fishing stops is less obvious. For example, five years after the establishment of an offshore wind farm, which is off limits to all vessels, no difference in the development of benthic communities between the effective MPA and surrounding area could be established (Bergman et al, 2015).…”
Section: Introductionmentioning
confidence: 99%