Aylin Akkaya

Aylin Akkaya
Marine Mammals Research Association, Turkey · Marine Mammal

PhD

About

71
Publications
36,732
Reads
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291
Citations
Additional affiliations
February 2016 - March 2017
Marine Mammals Research Association, Turkey
Position
  • Project Manager
February 2016 - September 2016
Archipelagos Marine Institute
Position
  • Marine Mammal Project Coordinator
January 2014 - March 2016
Marine Mammals Research Association, Turkey
Position
  • Project Manager

Publications

Publications (71)
Article
Lack of baseline knowledge is often the principal conservation barrier, especially if the species of concern shows steady decline. The primary goal of the current project is to fill the knowledge gaps in understudied cetacean populations through dedicated visual and acoustic surveys in the Eastern Mediterranean Sea of Turkey. The surveys were condu...
Article
Full-text available
Marine traffic is threatening cetaceans on a local and global scale. The Istanbul Strait is one of the busiest waterways, with up to 2,500 vessels present daily. This is the first study to assess the magnitude of short- and long-term behavioural changes of the endangered Black Sea harbour porpoises (Phocoena phocoena relicta) in the presence of mar...
Article
We investigated the short-term effects of non-targeted tourism on the behaviour of bottlenose dolphins (Tursiops truncatus) off the coast of Montenegro, South Adriatic, by comparing dolphin group behaviour during impact (the presence of non-targeted tourism vessels) and control (absence of all marine vessels) scenarios. Tourism vessel and dolphin b...
Article
Marine traffic has both short- and long-term effects on cetacean behaviour, yet fishing vessels present a unique situation as they disturb cetaceans whilst potentially offering alternative foraging opportunities. The Istanbul Strait is a key area for the study of anthropogenic disturbance on cetaceans due to heavy human pressure in a narrow space w...
Article
Full-text available
Insufficient data regarding abundance, distribution and movement patterns of bottlenose dolphins has contributed to lack of effective conservation strategies within the Levantine Sea. It has been inferred that the bottlenose dolphin population has decreased by 30 % in the last 60 years, thus a basin wide research effort on the population is an urge...
Article
Full-text available
Fisheries constitute a major threat to marine mammals globally. To evaluate the impact of small-scale fisheries (SSF) on regional under-studied marine mammal populations, we tested a novel and cost-effective approach at three data-limited locations of the central and eastern Mediterranean Sea. Using off-the-shelf GPS loggers to track SSF activities...
Article
Full-text available
Marine traffic has been identified as a serious threat to Mediterranean cetaceans with few mitigation strategies in place. With only limited research effort within the Eastern Basin, neither baseline species knowledge nor the magnitude of threats have been comprehensively assessed. Delineating the extent of overlap between marine traffic and cetace...
Conference Paper
Full-text available
Marine vessel disturbance is known to affect cetacean species. Montenegro's large artisanal fishing fleet and booming tourist industry emphasizes the importance of analysing the relationship between marine traffic and bottlenose dolphins in its waters. Data was collected from the shore, surveying at predetermined locations between 2016 and 2021. Do...
Article
The spatial–temporal distribution of cetacean species often overlaps with fishing practices in the Mediterranean, having direct and indirect consequences. This is the first long‐term study focusing on the effects of fisheries on the behavior of T. truncatus in Montenegro. Focal group scan sampling was used during surveys between September 2016 and...
Technical Report
Full-text available
Almost every cetacean species shows a worrying population decline in the entire Mediterranean Sea, which has resulted in their classification as either endangered, or vulnerable on the IUCN Red List. Currently, not only the coastal species but also the pelagic species of cetaceans show patchy and scarce distributions in locations where they were on...
Conference Paper
Common dolphins in the Mediterranean have seen declines in recent decades, with increased fragmentation and patchiness, generally attributed to a range of anthropogenic threats. Despite this, few attempts have been made to identify critical areas of dolphins. One such area with heavy overlap of human threats and cetaceans is the Istanbul Strait. Th...
Conference Paper
Full-text available
The Mediterranean subpopulation of common bottlenose dolphins (Tursiops truncatus) is classed as vulnerable with a decreasing population trend. Yet, research effort in the Mediterranean varies with relatively little being known of the Southern Adriatic Sea's bottlenose dolphins, which face increasing numbers of anthropogenic threats, mainly marine...
Article
Fin whales (Balaenoptera physalus) are the most commonly observed mysticetes within the Mediterranean Sea, however their status remains vulnerable (VU) and their population in decline mainly due to increasing anthropogenic activities. Sightings of fin whales in the eastern Mediterranean are negligible relative to the central and western basins whic...
Article
Fin whales (Balaenoptera physalus) are the most commonly observed mysticetes within the Mediterranean Sea. Their IUCN red list status remains vulnerable (VU) with their population in decline, mainly due to increasing anthropogenic stressors. Sightings of fin whales in the eastern Mediterranean are negligible relative to the central and western basi...
Technical Report
Full-text available
Five cetacean species are known to inhabit the Adriatic Sea. While bottlenose dolphins (Tursiops truncatus) are the most commonly reported species of the Adriatic, they show mainly coastal distribution from its southern to the northern boundaries. On the other hand, striped dolphins (Stenella coeruleoalba), Risso’s dolphins (Grampus griseus) and Cu...
Poster
The common bottlenose dolphin (Tursiops truncatus) is the most regularly sighted cetacean in the Adriatic. However, anthropogenic and environmental pressures are accelerating the decline of this species. Prior to this study, there was a lack of long-term monitoring in Montenegrin waters; much like other Southern Adriatic countries which are conside...
Article
Full-text available
Marine top predators, such as sharks, teleosts and cetaceans, are great indicators of a healthy ecosystem. The primary goal of this paper is to fill the knowledge gaps on top predators in Gökçeada Island located in the North Aegean Sea. Data on marine top predators were collected through Local Ecological Knowledge. Besides, visual and acoustic fiel...
Presentation
Full-text available
In understudied regions, a common reason for lack of effective conservation or management plans is due to a lack of understanding of where cetaceans are and where they overlap with anthropogenic pressures. This presentation presents a cost-effective and simple method for assessing the overlap between cetaceans and fishing activities. Despite it's c...
Presentation
Full-text available
A lack of baseline knowledge is one of the biggest barriers in the way of effective conservation and management of endangered species. Montenegro is the only country in the Adriatic Sea apart from Bosnia and Herzegovina (coastline = 20 km) with no marine protected areas. Land- and boat-based surveys began in September 2016 to increase knowledge abo...
Presentation
Full-text available
The Turkish Straits System (TSS) is an important waterway that serves as a trade artery for a large part of Central and Eastern Europe, holds strategic importance as a gateway for world navies and is historically considered the divide between Europe and Asia. However the system is also important as it hosts a diverse array of marine mammals and was...
Presentation
Full-text available
Presentation on the results of research I conducted and a paper I co-authored while volunteering in the Eastern Mediterranean with Marine Mammals Research Association (DMAD). Only I presented, however the presentation was written with the help of those listed as Co-authors.
Conference Paper
Full-text available
Sperm whales Physeter macrocephalus show a steady population decline, yet despite their threatened status, there remains a dearth of knowledge in the Mediterranean Sea. The current study reports the preliminary results of sperm whales' acoustic patterns within the Gulf of Taranto and the Northwestern Levantine Sea. "Regular" clicks were recorded in...
Article
The reference Hartman et al. 2015 should have been cited as Hartman et al. 2016. The reference information is presented correctly. The original article has been corrected.
Article
Full-text available
The residency pattern and site fidelity of Risso’s dolphin Grampus griseus were studied using sightings data collected during standardized vessel-based surveys carried out from 2013 to 2018 in the Gulf of Taranto (Northern Ionian Sea, Central-Eastern Mediterranean Sea). The photo-identification of 91 individuals of G. griseus and the occurrence of...
Poster
Full-text available
Natural elements of anomalous white hair or skin coloration are observed in many animals. These elements can be either small patches lacking pigmentation (piebaldism) or fully depigmented body surface. Such cases are relatively rare among cetaceans. Here we present the first report on one fully white and several piebald bottlenose dolphins Tursiops...
Poster
Full-text available
Introduction The delineation of critical habitats forms an important step in the implementation of marine protected areas (MPAs). Whilst MPAs have been shown to be an effective conservation strategy, they cover just 5% of the Adriatic, with no MPAs in Montenegro and a single MPA, Karaburun Sazani, in Albania. The Adriatic Sea has been identified a...
Poster
Full-text available
Scientific knowledge holds the most important warrior on the species protection. Yet, research effort is scarce in the Eastern Mediterranean while human food print increases in a pressure more than ever. Our project is the first dedicated seasonal survey effort in the area, targeting both coastal and deep-diving cetaceans with a goal to fill the kn...
Poster
Full-text available
The delineation of critical habitats forms an important step in the implementation of marine protected areas (MPAs). Whilst MPAs are known as one of the strongest conservation strategies, they cover only 6% of the Adriatic with a single MPA of KaraburunSazaniin the Southern Adriatic. Similarly, only 4% of Turkish waters have been designated MPAs. T...
Poster
Full-text available
Critical habitats form the essential base for the Marine Protected Areas (MPAs) implementation. While MPAs known as the strongest conservation strategies, they cover almost 6% of the Adriatic with a single MPA of Karaburun Sazani in Southern Adriatic. The Adriatic Sea, identified as a cetacean hotspot, is under the pressure of human activities, fro...
Technical Report
Full-text available
The Adriatic Sea is home to five cetacean species, classified as at risk by the IUCN. Bottlenose dolphins (Tursiops truncates), striped dolphins (Stenella coeruleoalba), Risso’s dolphins (Grampus griseus), Cuvier’s beaked whales (Ziphius cavirostris) and fin whales (Balaenoptera physalus), are all identified as species in which the community has a...
Technical Report
Full-text available
The Adriatic Sea is home to five cetacean species, classified as at risk by the IUCN. Bottlenose dolphins (Tursiops truncates), striped dolphins (Stenella coeruleoalba), Risso’s dolphins (Grampus griseus), Cuvier’s beaked whales (Ziphius cavirostris) and fin whales (Balaenoptera physalus), are all identified as species in which the community has a...
Article
Perhaps the world's best-known cetacean, the bottlenose dolphin shows considerable variation in behaviour between and within populations in relation to differences in natural and anthropogenic conditions. Drivers of behavioural variation need to be identified to understand the dynamics of wild dolphin populations. Little research has been published...
Technical Report
Full-text available
Despite of the direct and indirect environmental obligations of the coastal countries regarding the marine-life protection, the marine mammal fauna of the Levantine Sea still stays largely unknown. Hence, this insufficient scientific knowledge embodies one of the main barriers on the effective conservation in the Levantine Sea that holds the routes...
Article
Full-text available
The Istanbul Strait is an important cetacean habitat that is intensely used by humans. Yet little is known about their spatial-temporal distribution. To understand the encounter rates and residency patterns of bottlenose dolphins, photo-identification data were collected between 2011 and 2016 in the Istanbul Strait. The study showed that bottlenose...
Technical Report
Full-text available
The Montenegro Dolphin Project ran the first dedicated annual survey effort within the coastal and offshore waters of Montenegro between 2016 and 2017, with plans to keep the survey effort going until 2020. The results presented here contribute to fill the gaps in knowledge and provide baseline information on the cetaceans of Montenegro. We urge ma...
Article
Full-text available
The “New Mediterranean Biodiversity Records” series includes new records of marine species found in the Mediterranean basin and/or information on the spatial distribution of already established species of particular interest. The current article presents information on 21 marine taxa classified per country according to their geographic position in...
Article
The following information is missing from the Funding section: This work has been partly funded by the EC FP7 PERSEUS Project (Grant. Agr. 287600) and by the Scientific Research Projects Coordination Unit of Istanbul University (Project number FOA-2016-20530). © 2017 Akkaya Bas et al. This is an open access article distributed under the terms of th...
Poster
Full-text available
The Adriatic Sea is highlighted as a marine biodiversity hot spots1 and is inhabited by numerous cetacean species². The lack of baseline data on cetaceans, specifically in the Southern Adriatic Sea, is overdue to conservation and management actions that need to be taken. The current project represents the first long-term study in the Montenegrin co...
Poster
Full-text available
Once widely distributed, the Mediterranean subpopulation of bottlenose dolphins is now assumed to be less than 10,000 individuals and is currently classified as ‘vulnerable’ (VU) under A2cde categories, due to a range of anthropogenic activities. The current study conducted the first multiyear dedicated surveys in the north-western Levantine Sea. I...
Article
Full-text available
Remora australis (Bennett, 1840), is distributed worldwide in tropical and warm waters. Although the species was recorded in the Mediterranean Sea, the cases carry some doubts due to the lack of photographic proofs. Current study reports the four specimens of R. australis in association with two delphinidae species, bottlenose dolphins and striped...
Poster
Once widely distributed, the Mediterranean subpopulation of bottlenose dolphins is now assumed to be less than 10,000 individuals and is currently classified as ‘vulnerable’ (VU) under A2cde categories, due to a range of anthropogenic activities. The current study conducted the first multiyear dedicated surveys in the north-western Levantine Sea. I...
Poster
Resultados preliminares de foto identificación del delfín nariz de botella (Tursiops truncatus) en Montenegro Introducción El delfín nariz de botella (Tursiops truncatus) ha sido foco del estudio sobre cetáceos del Mar Adriático durante las últimas dos décadas. La falta de información sobre su abun-dancia, distribución y patrón de movimiento dificu...
Article
Full-text available
The non-lethal impacts of marine vessels on cetaceans are now a globally recognised threat. This study is the first to investigate the effect of marine traffic on the behaviour of bottlenose dolphins (Tursiops truncatus) in the Istanbul Strait, Turkey. Istanbul Strait is one of the busiest international waterways in the world and has been exposed t...
Data
Original data on the swimming directional changes of porpoises. (XLS)
Data
R codes for directional changes on porpoise swimming under the vessel speed, distance and density. (R)
Data
Original data used during Markov Chain analysis and model selections. (XLS)
Data
R codes for Markov Chain analysis. (R)
Article
Full-text available
Mediterranean monk seals (Hermann, 1779) were once widely and continuously distributed in the Mediterranean Sea, Black Sea and North Atlantic waters (Aguilar 1999). The species is considered to be one of the world’s most endangered pinnipeds, with the global population estimated to be around 500 individuals (Karamanlidis & Dendrinos 2015), only 50-...
Article
Full-text available
Cuvier’s beaked whales were sighted once on each of three different surveys over Antalya Canyon, in June and September 2015. Sightings took place in waters between 600 and 1000 m in depth and at 8 km from the closest shore. While the first sighting was positively identified as Cuvier’s beaked whale (Ziphius cavirostris (G. Cuvier, 1823)), latter si...
Poster
Full-text available
The Istanbul Strait is an important corridor for both marine vessels and cetaceans. As it is a very confined space, the route of vessels and cetaceans often coincide. To understand the marine vessels’ effect on cetacean in the Strait (bottlenose dolphins, common dolphins, harbour porpoises), behavioural reactions were analysed. Vessel type, speed,...
Article
Full-text available
Marine traffic is a significant source of disturbance to the bottlenose dolphin population in the Istanbul Strait, Turkey. To determine the importance of this threat, behavioral data together with sighting data of both dolphins and marine vessels were assessed for 2012. The current study suggests that the Istanbul Strait is used mostly as a foragin...
Poster
Full-text available
Bow-riding behaviour of bottlenose dolphins (Tursiops truncatus) was studied in the Istanbul Strait, Turkey, from September 2011 to October 2013, to determine if this behaviour was for energy saving, enjoyment, or related to foraging. We studied bow-riding behaviour in detail in terms of behavioural budget, area preference, marine vessel density, p...