Fishing amplifies forage fish population collapses
نویسندگان
چکیده
منابع مشابه
Fishing amplifies forage fish population collapses.
Forage fish support the largest fisheries in the world but also play key roles in marine food webs by transferring energy from plankton to upper trophic-level predators, such as large fish, seabirds, and marine mammals. Fishing can, thereby, have far reaching consequences on marine food webs unless safeguards are in place to avoid depleting forage fish to dangerously low levels, where dependent...
متن کاملFishing for feed or fishing for food: increasing global competition for small pelagic forage fish.
At present, small pelagic forage fish species (includes anchovies, herring, mackerel, sardines, etc.) represent the largest landed species group in capture fisheries (27.3 million t or 29.7% of total capture fisheries landings in 2006). They also currently constitute the major species group actively fished and targeted for nonfood uses, including reduction into fishmeal and fish oil for use wit...
متن کاملOverfishing causes frequent fish population collapses but rare extinctions.
Burgess et al.’s report in PNAS, “Range contraction enables harvesting to extinction” (1), provides a highly valuable perspective on the consequences of species range contractions that maintain local densities of declining populations. The authors suggest that this densitydependent contraction maintains local harvesting yields and economic incentives that enable depleted natural populations of ...
متن کاملReply to Szuwalski and Hilborn: Forage fish require an ecosystem approach.
In response to our recent paper (1), Szuwalski and Hilborn (2) make several points about the timing of recruitment failures, the effect of fishing on productivity, and our choice of using biomass, not recruitment, as the indicator for collapses. We address these points here to show that not only do they not affect our conclusions, but that we are largely in agreement regarding the biological pr...
متن کاملForage fish and near - shore habitat associations
Pacific herring (Clupea pallasi) has been identified as a critical species for North Pacific marine ecosystems and historically has been a commercially important species. In order to improve understanding of this key species, datasets which describe herring spawn activities were integrated with known habitat information and analyzed to determine which habitat has been critical for herring survi...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2015
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1422020112