Assessment of the impact of anthropogenic airborne noise on the behaviour of Cape fur seals during the breeding season in Namibia

Martin, Mathilde; Gridley, Tess; Elwen, Simon Harvey; Charrier, Isabelle

doi:10.1016/j.jembe.2022.151721

Cited by 10 publications

(15 citation statements)

References 49 publications

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“…The number of seals in the focal groups was reported to decrease during the noise exposure (Martin et al, 2022). Energetically costly behaviours such as the time individuals spend awake, vigilant or in locomotion were increased to the detriment of vital activities like resting and nursing (Martin et al, 2022). The present study aimed to use the same experimental approach (playback experiments with broadcast of in-air boat motor noise) at two other sites located in South Africa: Lamberts Bay (LB, a breeding colony adjacent to a small harbour, low ambient noise) and Cape Town Harbour (CT, a haul-out site within the limits of a major commercial harbour, high ambient noise).…”

Section: Introductionmentioning

confidence: 99%

“…Little is known about the effect of anthropogenic airborne noise on the behaviour and/or physiology of colonial pinnipeds on land. A few studies have assessed the effect of extreme events (such as missile or rocket launches and military explosions, Demarchi et al, 2012;Holst et al, 2011Holst et al, , 2005Stewart, 1993Stewart, , 1981, but to date, only two studies have investigated the effect of chronic noise exposure on land-based pinnipeds: car and/or boat motor noise on Australian (Arctocephalus pusillus doriferus) and Cape fur seals (Arctocephalus pusillus pusillus) (Martin et al, 2022;Tripovich et al, 2012). Both studies were conducted at a single study site, limiting the potential for generalisation across the species range.…”

Section: Introductionmentioning

confidence: 99%

“…In a recent study, Martin and colleagues (2022) have evaluated the behavioural response of Cape fur seals to short-term boat motor noise exposure at Pelican Point breeding colony in Namibia. The number of seals in the focal groups was reported to decrease during the noise exposure (Martin et al, 2022). Energetically costly behaviours such as the time individuals spend awake, vigilant or in locomotion were increased to the detriment of vital activities like resting and nursing (Martin et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Inter-site variability in the Cape fur seal's behavioural response to boat noise exposure

Martin,

Gridley,

Elwen

et al. 2023

Marine Pollution Bulletin

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Inter-site variability in the Cape fur seal's behavioural response to boat noise exposure

Martin,

Gridley,

Elwen

et al. 2023

Marine Pollution Bulletin

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“…Pinnipeds (seals, sea lions, and walruses) are marine mammals that preserved a connection to the mainland [ 6 ], where they spend time to haul out and give birth during the reproductive period. The use of coastal, dry land territories exposed these species to anthropogenic impacts such as direct human disturbance and noise [ 7 ]. The Mediterranean monk seal progressively moved to occupy areas less accessible to mankind due to anthropic pressures, including direct and indirect killings, and the habitat loss.…”

Section: Introductionmentioning

confidence: 99%

First Documented Uses of Caves along the Coast of Albania by Mediterranean Monk Seals (Monachus monachus, Hermann 1779): Ecological and Conservation Inferences

Bundone

Hernández-Milian

Hysolakoj

et al. 2022

Animals

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Information on the habitat use of the Mediterranean monk seal (Monachus monachus) along the coast of Albania (Adriatic and Ionian Sea) has so far been limited to vague and generalised data. A survey conducted in the National Marine Park Karaburun-Sazan in the summer of 2019 identified two marine caves with morphological characteristics best suited for use by such species. The two caves were subsequently equipped with infrared camera traps in 2020. The recovery of a scat in one of the caves during the 2019 survey and the photographic material obtained confirmed the use of the cave. This research provides the first documentation of marine cave habitat use by the Mediterranean monk seal in Albania. Quantitative and qualitative assessment of specimens frequenting the area could not be performed due to the limited data obtained on seal presence along the Albanian coasts. Nevertheless, the retrieved information is relevant for Albania and for the species conservation. The collected scat was analysed for trophic and anthropogenic contamination data. Three species (gilthead sea bream, European sea bass, and garfish), as well as four anthropogenic items (including a piece of nylon net), were identified. The inferences resulting from the analyses of the data presented in this study provided additional information on the ecology of the species and its conservation priorities, which need to be contextualized at the Adriatic–Ionian regional scale.

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“…We discuss these and other predictors in the context of a national‐level understanding of potential HWI drivers on communal conservancies in Namibia. Although we recognize that humans and their activities can negatively impact wildlife at both local and global scales (Hauptfleisch et al, 2013; Hunninck et al, 2017; Kanga et al, 2012; Martin et al, 2022; Stoldt et al, 2020), in this article, we focus on negative impacts of wildlife on communities that are attempting to coexist with wildlife.…”

Section: Introductionmentioning

confidence: 99%

Multispecies study of patterns and drivers of wildlife impacts on human livelihoods in communal conservancies

Tavolaro

Woodgate

Brown³

et al. 2022

Conservat Sci and Prac

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Farmers in developing countries often work in challenging environments with poor infrastructure, marginal agricultural potential, and limited economic opportunities. These challenges are exacerbated when wildlife impact human livelihoods. Here, we analyze data quantifying the type and frequency of human‐wildlife impacts within communal conservancies across Namibia and explore possible drivers of temporal and spatial variation of these data. A total of 112,165 human‐wildlife impacts were reported between 2001 and 2019 at the national level, with livestock depredation the most common. Marked regional variation was however evident with crop raiding and attacks on humans more prevalent in the mesic North‐East, and both livestock depredation and infrastructure damage highest in the arid north‐western regions. Elephant, jackal, hyena, cheetah, and leopard (in descending order) were the species most frequently linked to reported damage. Distance to the nearest protected area and river, terrain ruggedness, conservancy size, and annual rainfall (amongst others) all had a significant impact on both the distribution and extent of human‐wildlife impact reports. Reports did not vary significantly with years but were significantly influenced by average monthly rainfall. Understanding spatial and temporal patterns of human‐wildlife impacts at a national scale, in addition to their potential drivers, allows for the identification of conflict hotspots and the allocation of resources and expertise to mitigate them. Ultimately, mitigating negative interactions between people and wildlife will allow for the continued sharing of space and with that the sustainability of a model that has seen a dramatic increase in both the distribution and abundance of wildlife in Namibia.

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Assessment of the impact of anthropogenic airborne noise on the behaviour of Cape fur seals during the breeding season in Namibia

Cited by 10 publications

References 49 publications

Inter-site variability in the Cape fur seal's behavioural response to boat noise exposure

Inter-site variability in the Cape fur seal's behavioural response to boat noise exposure

First Documented Uses of Caves along the Coast of Albania by Mediterranean Monk Seals (Monachus monachus, Hermann 1779): Ecological and Conservation Inferences

Multispecies study of patterns and drivers of wildlife impacts on human livelihoods in communal conservancies

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