Population dynamics of a fragmented subtidal Zostera marina population affected by shell fishing

Barañano, Carlota; Fernández, Emilio; Morán, Paloma; Urbieta, Pablo; Méndez, Gonzalo

doi:10.1016/j.ecss.2022.107818

Cited by 8 publications

(5 citation statements)

References 71 publications

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“…Previous research has identified cases of seagrass fragmentation linked to human activities (Larkum & West, 1990; Montefalcone et al, 2010; Cuttriss, Prince & Castley, 2013; Santos, Lirman & Pittman, 2016; Barañano et al, 2022); however, this has not been quantified in relation to multiple disturbances or human population density. For example, Montefalcone et al (2010) reported that the fragmentation of P. oceanica meadows in the Mediterranean was lower in areas adjacent to undisturbed coastlines in comparison with those containing human developments.…”

Section: Discussionmentioning

confidence: 99%

“…Seagrass loss has also been reported from physical destruction or shading caused by urban and industrial development (Yaakub et al, 2014;Holon et al, 2015;Unsworth et al, 2018), boating activities or infrastructure (Burdick & Short, 1999;Fyfe & Davis, 2007;West, 2011;Glasby & West, 2018), fishing practices (Dunic et al, 2021;Turschwell et al, 2021;Barañano et al, 2022) and aquaculture (Cabaço, Alexandre & Santos, 2005;Howarth et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…For example, land‐use changes alter nutrient and sediment inputs into adjacent waters which can cause seagrass losses via eutrophication or turbidity and reduced light availability (Walker & McComb, 1992; Duarte, 2002; Thrush et al, 2004; Ralph et al, 2007). Seagrass loss has also been reported from physical destruction or shading caused by urban and industrial development (Yaakub et al, 2014; Holon et al, 2015; Unsworth et al, 2018), boating activities or infrastructure (Burdick & Short, 1999; Fyfe & Davis, 2007; West, 2011; Glasby & West, 2018), fishing practices (Dunic et al, 2021; Turschwell et al, 2021; Barañano et al, 2022) and aquaculture (Cabaço, Alexandre & Santos, 2005; Howarth et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have highlighted that seagrass meadows subjected to anthropogenic disturbances experience not only habitat loss, but also fragmentation (Hernández‐Cruz, Purkis & Riegl, 2006; Montefalcone et al, 2010; Santos, Lirman & Pittman, 2016; Barañano et al, 2022). For instance, seagrass fragmentation has been reported to be greater in seascapes adjacent to anthropized coastlines (Montefalcone et al, 2010), close to canals discharging fresh water and effluents (Hernández‐Cruz, Purkis & Riegl, 2006; Santos, Lirman & Pittman, 2016), subjected to shellfish fishing (Barañano et al, 2022) and with high densities of boat moorings (Hastings, Hesp & Kendrick, 1995; La Manna et al, 2015; Colomer et al, 2017). It is also recognized that once a meadow becomes fragmented it has an elevated risk of becoming lost, even after the disturbance has ceased (Larkum, 1976; Hastings, Hesp & Kendrick, 1995).…”

Section: Introductionmentioning

confidence: 99%

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Don't go breaking apart: Anthropogenic disturbances predict meadow fragmentation of an endangered seagrass

Swadling

West

Gibson

et al. 2022

Aquatic Conservation

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1. Although it is well established that human activities are linked to the loss of seagrasses worldwide, the influence of anthropogenic disturbances on the habitat fragmentation of seagrass meadows is less understood. This information is essential to identify how humans are modifying seascapes and what disturbances pose the greatest risk to seagrasses, which is pertinent given the rapid urbanization occurring in coastal areas. This study examined how the habitat fragmentation of an endangered seagrassPosidonia australis varied in relation to several anthropogenic disturbances (i.e. human population, marine infrastructure, terrestrial run-off and catchment land-usage) within 10 estuaries across 620 km of coastline in New South Wales, Australia.3. When comparing between estuaries, the fragmentation of P. australis meadows was significantly greater in estuaries adjacent to highly populated metropolitan centresgenerally in the Greater Sydney region. At sites within estuaries, the density of boat moorings was the most important predictor of habitat fragmentation, but there was also evidence of higher fragmentation with increased numbers of jetties and oyster aquaculture leases.4. These results suggest that the fragmentation of seagrass meadows will become more pervasive as the human population continues to grow and estuarine development increases. Strategies to mitigate anthropogenic disturbances on seagrass meadow fragmentation could include prohibiting the construction of boat moorings and other artificial structures in areas where seagrasses are present or promoting environmentally friendly designs for marine infrastructure. This knowledge will support ongoing management actions attempting to balance coastal development and the conservation of seagrasses.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Don't go breaking apart: Anthropogenic disturbances predict meadow fragmentation of an endangered seagrass

Swadling

West

Gibson

et al. 2022

Aquatic Conservation

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“…Protected by international, European, and local acts, Zostera marina L. meadows, made up of a marine flowing plant (angiosperm), are subject to considerable human pressure related to their geographical distribution: abrasion of anchor chains tied to recreational boat fishing [2], trawling due to professional fishing, and trampling due to foot fishing at low tide [3].…”

Section: Introductionmentioning

confidence: 99%

Drone-Based Spatio-Temporal Assessment of a Seagras Meadow: Insights into Anthropogenic Pressure

James,

Collin,

Bouet

2023

Ecrs 2023

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Population structure and habitat assessment for two commercial clam species exploited in small-scale fisheries

Román

Olabarria

Weidberg

et al. 2023

Rev Fish Biol Fisheries

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Small-scale fisheries play a crucial role in providing food and jobs in local communities worldwide. Nonetheless, their environmental impact remains poorly understood. To assess the effect of different levels of harvesting pressure on clam population dynamics, we selected three areas for study within each of three intertidal shellfish beds (in NW Spain) on the basis of historical harvesting pressure. The abundance (up to 149 ind m−2) of the introduced clam Ruditapes philippinarum of marketable size was much greater than that of the native R. decussatus (up to 20 ind m−2) in all three beds, which is consistent with the low level of recruitment of the native species. Our results suggest that the harvesting pressure did not significantly affect reproduction, which was asynchronous across beds, and that the reproductive period was longer in R. philippinarum than in R. decussatus. Nonetheless, the intertidal system was strongly affected by harvesting, as bare sediment was typical in frequently harvested areas, while sparse or dense patches of the seagrass Zostera noltei occurred in areas where harvesting pressure was scarce or null. The abundance and diversity of non-commercial infaunal species were greatest in unharvested areas. However, commercial clams were not abundant in these areas, possibly due to natural habitat preferences or artificial seeding and movement of clams along the beds. Management plans based on local knowledge of ecosystems are needed to maintain sustainable stocks of R. decussatus and also to limit the effects of harvesting on the systems.

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Population dynamics of a fragmented subtidal Zostera marina population affected by shell fishing

Cited by 8 publications

References 71 publications

Don't go breaking apart: Anthropogenic disturbances predict meadow fragmentation of an endangered seagrass

Don't go breaking apart: Anthropogenic disturbances predict meadow fragmentation of an endangered seagrass

Drone-Based Spatio-Temporal Assessment of a Seagras Meadow: Insights into Anthropogenic Pressure

Population structure and habitat assessment for two commercial clam species exploited in small-scale fisheries

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