Partial migration in diadromous fishes drives the allocation of subsidies across the freshwater-marine ecotone

Animal Migration, Journal Year: 2021, Volume and Issue: 8(1), P. 40 - 55

Published: Jan. 1, 2021

Abstract Migratory animals can act as cross-boundary subsidies sustaining ecosystem functioning, such diadromous fishes that migrate between fresh water and seawater carry nutrients energy across the freshwater-marine ecotone. Frequency timing of migration are however highly variable within among populations. We hypothesized in catadromous (i.e., grow freshwater spawn sea, eels), import by migratory juveniles could outweigh export adults due to skipped spawning migration. used diamond mullet Planiliza ordensis, a model species, determined life-history traits using combination length-to-age data, acoustic telemetry otolith (fish ear stone) microchemistry. mass balance approach individual acquisition allocation, extended our other strategies. Our results showed high intra-population variation behaviour P. ordensis , with few individuals migrating every year spawn. estimated an acted net 42.6g biomass subsidy water, representing retention more than 50% juvenile at entry. predicts is likely alter allocation highlighting important effects on fluxes nutrient scales. encourage future studies consider how affect direction magnitude ecotone boundaries.

Language: Английский

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Historical analysis reveals ecological shifts in two omnivorous fish after the invasion of Limnoperna fortunei in the Uruguay river

Biological Invasions, Journal Year: 2023, Volume and Issue: 25(6), P. 1935 - 1954

Published: Feb. 18, 2023

Language: Английский

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Jornadas de Ciencia y Tecnología Agraria 2023

Revista de Investigaciones de la Facultad de Ciencias Agrarias - UNR, Journal Year: 2023, Volume and Issue: 41, P. e033 - e033

Published: Sept. 11, 2023

Las Jornadas de Ciencia y Tecnología Agraria 2023, VIII la Facultad Ciencias Agrarias UNR II Reunión Argentina-Chile se realizaron desde el 26 al 29 junio.Como año anterior participó en su organización Agronomía Universidad Concepción, Chile. La virtualidad permitió a ambas instituciones compartir nuevamente diversas experiencias además discutir avances investigaciones junto otros profesionales Argentina, Chile más países región. Se consolidaron como un espacio para visibilizar los trayectos recorridos nuestras disciplinas profundizar colaboraciones académicas formación profesional con otras Latinoamérica.Las incluyeron tres conferencias magistrales, una mesa redonda, 64 trabajos presentados formato poster 17 secciones orales. Aquí compendian resúmenes 81 presentados.

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Biodiversity conservation and ecosystem service promotion are different but compatible objectives : Relationships between environmental factors and natural enemies and natural pest control

Published: Jan. 1, 2024

Wildflower strips have been heralded as a promising way to enhance ecosystem services by providing organisms which may help make farming less dependent on external inputs.However, recent studies show inconsistent effects delivery of and crop yield, warranting more detailed analysis the factors determining wildflower strips.We examined how natural enemy groups spider, carabid beetle staphylinid beetle, well aphid pest yield respond furthermore determined whether response enemies, aphids depends flower cover species richness, this is influenced fertilizer insecticide applications in 16 winter wheat fields Netherlands.We used an experimental approach with nested design that included all combinations (present/absent), application (yes/no) (yes/no).Presence did not affect ground-dwelling or yield.However, availability across control margins was positively related abundance pooled number spiders beetles.Positive were observed over limited distances; up 5 m from edge for yield.The on-field management practices interact suggesting that, our study, flowers but mainly additive.Our study indicates richness wildflowers field margin habitat, rather than establishment per se, drove increases enemies yield.This suggests attention should be given optimization success seed mixtures enhancing diversity.Furthermore, biodiversity herbaceous vegetation linear landscape elements represent cost-effective alternative boost regulating production agricultural landscapes.

Language: Английский

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Beneath the Surface: A Scientometric Review of Edaphic Fauna of Agricultural Landscapes

Journal of soil science and plant nutrition, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 27, 2024

Language: Английский

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