Effect of sediment particle size on recruitment of Owenia fusiformis in the Bay of Blanes (NW Mediterranean Sea): an experimental approach to explain field distribution

Pinedo, Susana; Sardá, Rafael; Rey, C.; Bhaud, Michel

doi:10.3354/meps203205

Cited by 54 publications

(32 citation statements)

References 32 publications

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“…Because of the limited experimental box size, motion activity is considered as equivalent to swimming activity. Within active motion periods, vertical and horizontal velocity components were derived from larval trajectories and filtered out by eliminating unrealistic acceleration (>1 mm s In addition, discontinuous populations with restricted coverages have been clearly identified from the Italian Thyrrenian coast to the Spanish Catalan coast (Guille 1971, Massé 1971, Maron-Ramos 1973, Amouroux 1974, Gambi & Giangrande 1986, Pinedo et al 2000. These population locations are plotted in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Projections of larval positions on a vertical plane were recorded every second. The spatial resolution for position-tracking ranged from 64 to 76 μm vertically and from 78 to 93 μm horizontally, depending on the distance between the box and the camera.This procedure allowed the swimming behaviour of Owenia fusiformis larvae to be measured with respect to both their ontogenic stages (Stages 2 to 4) and light exposure (nycthemeral and depth variations) over the duration given in Mar Ecol Prog Ser 311: [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66] 2006 In addition, discontinuous populations with restricted coverages have been clearly identified from the Italian Thyrrenian coast to the Spanish Catalan coast (Guille 1971, Massé 1971, Maron-Ramos 1973, Amouroux 1974, Gambi & Giangrande 1986, Pinedo et al 2000. These population locations are plotted in Fig.…”

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confidence: 99%

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Dispersal of Owenia fusiformis larvae by wind-driven currents: turbulence, swimming behaviour and mortality in a three-dimensional stochastic model

Guizien¹,

Brochier²,

Duchêne³

et al. 2006

Mar. Ecol. Prog. Ser.

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A Lagrangian stochastic larva tracking model based on a 3-dimensional (3D) high resolution wind-driven coastal circulation model is used to study the dispersal of benthic larvae. The larva tracking model includes 3D advection and turbulence, and a species-specific larval swimming behaviour that accounts for ontogenic changes, sensitivity to light exposure and inter-individual variability. Larval mortality can also be included. The dispersal model is applied to Owenia fusiformis larvae, whose swimming behaviour description is based on both existing data and new complementary measurements. Larval velocities (resulting from both settling and swimming behaviour) were measured with actographic equipment and ranged between -1 and 0.9 mm s -1. Measured swimming activity rates were lower than 50%. The sensitivity study of larval dispersal in March-April 1999 showed that: (1) the dispersal of neutrally buoyant passive larvae is more sensitive to the physical forcings resolution, because of both advection and diffusion processes, than to the variability of spawning locations within neighbouring grid cells (up to 1 km apart) in Banyuls Bay (France, NW Mediterranean); and (2) a physical barrier, located at 20 m deep in Argelès (France, NW Mediterranean) and 30 m deep in Banyuls Bay, separated nearshore and offshore larval dispersal in 1999. The final positions and local retention of larvae released in Banyuls Bay and Argelès result from: (1) the balance between the 3D turbulence, larval settling velocity (~0.8 mm s -1 ) and swimming activity rate; and (2) natural mortality, although the effect is not proportional to survival rates. High resolution larvae dispersal patterns for O. fusiformis in Banyuls Bay suggest that self-recruitment was low in the Banyuls population during spring 1999 and confirm that post-settlement deposit patterns observed there in May 1999 were insignificant. In addition, interconnections between the Argelès and Banyuls populations can exist. KEY WORDS: Larval dispersal · 3D numerical modeling· Lagrangian/Eulerian models · Owenia fusiformis · Wind-driven currents Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 311: [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66] 2006 behaviour, what population dynamics emerge? Benthic population dynamics is a major issue in the management of nearshore regions. Some benthic species are fished directly and others are used to assess the biochemical quality of the environment since their sedentary adult stage integrates bio-chemical environmental changes throughout their lifetime. The use of some of these populations as bio-indicators is questionable if their dynamics are unstable due to larval dispersal.Pioneering larval dispersal studies have tried to identify physical retention structures (which are generally highly predictable) relative to the duration of the animal's larval stage, e.g. tidal estuaries for a short larval stage (de Wolf 1974, Chen et al. 1997 or a general ther...

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Dispersal of Owenia fusiformis larvae by wind-driven currents: turbulence, swimming behaviour and mortality in a three-dimensional stochastic model

Guizien¹,

Brochier²,

Duchêne³

et al. 2006

Mar. Ecol. Prog. Ser.

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“…It is uncertain whether dredging caused the observed loss of fine sediments, and past studies have found no effect of pump-scoop dredging on sediment composition in Poole (McIlquham, unpubl.). Longterm or chronic fishing can nonetheless cause permanent shifts in habitat characteristics and community structure (Pauly, 1995;Handley et al, 2014), with implications for settlement and recruitment patterns (Wilson, 1990;Pinedo et al, 2000;Sebesvari et al, 2006). No significant change in sediment composition was evident at the site where settlement appeared the greatest however.…”

Section: Discussionmentioning

confidence: 99%

Impacts of a novel shellfishing gear on macrobenthos in a marine protected area: pump-scoop dredging in Poole Harbour, UK

Clarke

Esteves

Stillman

et al. 2017

Aquat. Living Resour.

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-Understanding the impact of bottom-fishing gears at various scales and intensities on habitats and species is necessary to inform management. In Poole Harbour, UK, a multiple use marine protected area, fishermen utilise a unique "pump-scoop" dredge to harvest the introduced Manila clam Ruditapes philippinarum. Managers need to balance the socio-economic benefits of the fishery with ecological concerns across the region, which has required a revision of by-laws that include both spatial and temporal measures. Within an operational fishery, we used a Before-After-Control-Impact sampling design to assess the impacts of pump-scoop dredging on benthic physical characteristics and community structure in an area where there was no dredging, an area newly opened to dredging and an area subject to high levels of historic dredging. A sampling grid was used in each area to best capture any fishing effort in the newly opened area. Core samples were taken to a depth of 30 cm within intertidal mudflats. A significant loss of fine sediments was observed in the site subject to high intensity dredging and a significant change in community structure also occurred in both dredged sites throughout the study period. In the newly opened site this was characterised by a relative increase in species richness, including increased abundance of annelid worms, notably Hediste diversicolor and Aphelochaeta marioni and a decline in the abundance of the bivalve mollusc Abra tenuis. These changes, albeit relatively small, are attributed to physical disturbance as a direct result of pump-scoop dredging, although no difference in the classification of the biotope of the site was observed. This is of particular interest to managers monitoring site condition within areas under the new bylaws as the Manila clam is spreading to other protected estuaries in the region.

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“…Esta selección también se observa en otros invertebrados infaunales, los cuales seleccionan el sustrato en función a su tamaño y peso corporal (Pinedo et al 2000, Robson et al 2005.…”

Section: Discussionunclassified

“…La relación que existe entre un organismo bentónico y un ambiente en particular se ha documentado para diferentes tipos de invertebrados (Méndez-Ubach et al 1986, Snelgrove & Butman 1994, Pinedo et al 2000, Iken et al 2001, Gray 2002, Challener et al 2009, Boos et al 2010, Aslan-Cihangir & Pancucci-Papadopoulou 2012. Esta afinidad generalmente se asocia únicamente a la cantidad de materia orgánica presente en el medio o con la textura del sedimento, pero es evidente que existen otras variables ambientales que determinan los patrones de distribución espacial de un animal dentro de su hábitat (Freeman & Rogers 2003) y muchos rasgos de las especies bentónicas, como tasas de supervivencia o reproducción, niveles tróficos, morfologías o desarrollo de adaptaciones particulares (Pulliam 2000, Ramírez-Llodra et al 2002, Guzmán & Guevara 2002.…”

Section: Introductionunclassified

Influencia de las variables fisicoquímicas en la estructura de tallas y distribución de Meoma ventricosa grandis (Echinodermata: Brissidae) dentro del canal Boca Chica, Acapulco, México

Torres-Martínez

Solís-Marín

Laguarda-Figueras

et al. 2016

Rev. biol. mar. oceanogr.

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The results of the measurements of the body size showed a higher percentage of adults in workstation 1 and 2 (13 and 5%, respectively); however, in workstation 3 the percentage was of 51%. The variance pointed a significance in the size of the individuals from the workstation Palmitas, showing the largest specimens throughout the study. The sediment texture in workstations La Playa and El Jardín was characterized by asymmetric clasts of coarse sand and gravel of different sizes, with a sediment layer with a depth of layer of 20-30 cm. Unlike workstation of Palmitas wich was distinguished by almost symmetrical gravel clasts, similar in size and with depth of 50 cm; in all workstations juveniles were buried between 10 and 20 cm and adults between 15 and 40 cm of depth. The gonadal index was asynchronous, presenting the highest reproductive peaks in Palmitas. Regression Trees analysis established that the organic matter deposited in the sediment acts as the primary physicochemical variable in the distribution of the echinoid within the channel, locating until 6,571 individuals in direct relation to it. The largest number of specimens (11,330) was obtained in the presence of organic matter, nitrates and phosphates. This is the first time that genus Meoma is related to a specific substrate according to the body size. Key words: Meoma ventricosa grandis, physicochemical variables, size structure, distribution, AcapulcoResumen.-En este trabajo se examinaron diferentes variables fisicoquímicas (textura del sedimento, temperatura, salinidad, oxígeno disuelto, turbidez, nitrito, nitrato, amonio, fosfato, materia orgánica de nieve marina, materia orgánica del sedimento y materia orgánica del tracto digestivo) y su influencia en la estructura de tallas y la distribución de Meoma ventricosa grandis. El estudio fue realizado en 3 estaciones de trabajo (E1: La Playa, E2: El Jardín, E3: Palmitas) localizadas a través del canal Boca Chica, Acapulco, México, durante 2006 y 2007. Los resultados de las mediciones del tamaño corporal mostraron un menor porcentaje de individuos adultos en las estaciones 1 y 2 (13 y 5%, respectivamente), por el contrario en la estación 3 el porcentaje fue de 51%. El análisis de varianza señaló una diferencia significativa en el tamaño de los individuos de la estación Palmitas con respecto a las otras dos, presentando los ejemplares más grandes a través de todo el estudio. La textura del sedimento en la estación 1, La Playa y en la estación 2, El Jardín se caracterizó por clastos asimétricos de arena gruesa y grava, de diversos tamaños, con una profundidad de la capa de sedimentos de 20 a 30 cm, en contraste con la estación 3, Palmitas, la cual presentó clastos casi simétricos de arena gruesa, de tamaño similar, con profundidad de 50 cm; en todas las estaciones los individuos juveniles estaban enterrados entre los 10 y 20 cm de profundidad y los adultos entre 15 y 40 cm. El índice gonádico fue de tipo asincrónico durante el estudio, presentando los picos reproductivos más altos en Palmitas. El análisis...

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Effect of sediment particle size on recruitment of Owenia fusiformis in the Bay of Blanes (NW Mediterranean Sea): an experimental approach to explain field distribution

Cited by 54 publications

References 32 publications

Dispersal of Owenia fusiformis larvae by wind-driven currents: turbulence, swimming behaviour and mortality in a three-dimensional stochastic model

Dispersal of Owenia fusiformis larvae by wind-driven currents: turbulence, swimming behaviour and mortality in a three-dimensional stochastic model

Impacts of a novel shellfishing gear on macrobenthos in a marine protected area: pump-scoop dredging in Poole Harbour, UK

Influencia de las variables fisicoquímicas en la estructura de tallas y distribución de Meoma ventricosa grandis (Echinodermata: Brissidae) dentro del canal Boca Chica, Acapulco, México

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