Stable mean trophic level and decreasing fish size in Central Amazonian fishery landings

被引：2

作者：

de Matos, Octavio Ferreira ^{[1
,5
]}

Pereira, Diego Valente ^{[2
]}

Lopes, Giulia Cristina dos Santos ^{[3
]}

Mereles, Marcos de Almeida ^{[1
]}

Batista, Vandick da Silva ^{[4
]}

Freitas, Carlos Edwar de Carvalho ^{[3
]}

Siqueira-Souza, Flavia Kelly ^{[3
]}

机构：

[1] Fed Univ Amazonas UFAM, Fac Agr Sci, Grad Program Anim Sci & Fishery Resources PPGCARP, Manaus, Amazonas, Brazil

[2] Natl Inst Res Amazon INPA, Grad Program Freshwater Biol & Inland Fisheries, Manaus, Amazonas, Brazil

[3] Fed Univ Amazonas UFAM, Fac Agr Sci, Dept Fishery Sci, Manaus, Amazonas, Brazil

[4] Fed Univ Alagoas UFAL, Lab Management & Conservat Renewable Resources LAC, Maceio, Alagoas, Brazil

[5] Fed Univ Amazonas UFAM, Fac Agr Sci, Grad Program Anim Sci & Fishery Resources PPGCARP, Ave Gen Rodrigo Octávio Jordao Ramos,3000 U, BR-69077000 Manaus, Amazonas, Brazil

来源：

FISHERIES MANAGEMENT AND ECOLOGY | 2024年 / 31卷 / 02期

关键词：

body size; fisheries; limited data; trophic level; MARINE FOOD WEBS; STOCK ASSESSMENT; MADEIRA RIVER; DIVERSITY; IMPACT; NORTH; BASIN;

D O I：

10.1111/fme.12667

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Evaluating trends in fisheries, especially data-limited small-scale fisheries, is challenging. We used fish landings to evaluate changes in composition of fish landings in rivers of the Central Amazon, from a discontinuous historical 28-year series of landings from different data collection systems in main ports of the city of Manaus, the largest consumer market in the region. Annual mean trophic level (MTL), fishing-in-balance index (FiB), and mean landed size (MSL) were estimated. MTL did not decline, FiB was positive in most years, and MSL declined. Relative catches of certain fish species were replaced by others at a similar trophic level, but mean body size declined over time. We conclude that fishing in the Central Amazon is not sustainable and would benefit from better management strategies.

引用

页数：11

共 48 条

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