Ida Carlén

Ida Carlén
Stockholm University | SU · Department of Zoology

MSc

About

19
Publications
6,762
Reads
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244
Citations
Citations since 2017
12 Research Items
166 Citations
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20172018201920202021202220230102030405060
20172018201920202021202220230102030405060

Publications

Publications (19)
Article
Full-text available
Based on the Baltic Earth Assessment Reports of this thematic issue in Earth System Dynamics and recent peer-reviewed literature, current knowledge of the effects of global warming on past and future changes in climate of the Baltic Sea region is summarised and assessed. The study is an update of the Second Assessment of Climate Change (BACC II) pu...
Article
Full-text available
Abstract Knowing the abundance of a population is a crucial component to assess its conservation status and develop effective conservation plans. For most cetaceans, abundance estimation is difficult given their cryptic and mobile nature, especially when the population is small and has a transnational distribution. In the Baltic Sea, the number of...
Preprint
Full-text available
Based on the Baltic Earth Assessment Reports of this thematic issue in Earth System Dynamics and recent peer-reviewed literature, current knowledge about the effects of global warming on past and future changes in climate of the Baltic Sea region is summarized and assessed. The study is an update of the Second Assessment of Climate Change (BACC II)...
Preprint
Knowing the abundance of a population is a crucial component to assess its conservation status and develop effective conservation plans. For most cetaceans, abundance estimation is difficult given their cryptic and mobile nature, especially when the population is small and has a transnational distribution. In the Baltic Sea, the number of harbour p...
Technical Report
Full-text available
The species status assessment for the Marine Strategy Framework Directive is structured around five Good Environmental Status (GES) criteria, i.e., by-catch rate, population abundance, population demographic characteristics, species distribution and habitat for the species. The MSFD Biodiversity theme for species includes, among others, some highly...
Article
To test our hypothesis that people can't recognise a harbour porpoise, we created an online survey in the form of a Google forms quiz, in which we asked people to name eight different mammals from a photo and, in the cases of the marine mammals, an illustration. The quiz was available in English and Swedish and promulgated via social media. Results...
Article
Full-text available
The conservation of harbor porpoises (Phocoena phocoena) appears to be failing in Europe. There are particular concerns about this species in the Baltic Proper, Black, and Mediterranean Seas, as well as in the Northeast Atlantic, including the Iberian population, off the Spanish and Portuguese coasts. The Baltic Proper porpoise is “critically endan...
Conference Paper
The Baltic Sea harbour porpoise is listed by IUCN and HELCOM as critically endangered. Today its geographical range is significantly smaller than its historical one, and there are only a few hundred animals left. While pollution and disturbance through underwater noise may be contributing to the population failing to recover, bycatch is the one acu...
Conference Paper
Full-text available
Within Europe there are various Conventions and legislation that set out general provisions for the protection and conservation of migratory species such as cetaceans. The focus of the present report is on the North East Atlantic, the North Sea and the Baltic Sea, and the main conventions and legislation and how they are assessed are outlined in An...
Article
Knowledge on spatial and seasonal distribution of species is crucial when designing protected areas and implementing management actions. The Baltic Proper harbour porpoise (Phocoena phocoena) population is critically endangered, and its distribution is virtually unknown. Here, we used passive acoustic monitoring and species distribution models to d...
Technical Report
Full-text available
The harbour porpoise is protected by the Habitats Directive Annexes II and IV. This means that a system of strict protection shall be established throughout its natural range (Annex IV), and that sites of significant importance to the species should be designated and protected (special areas of conservation) (Annex II). Preferred foraging habitats...
Article
Full-text available
Cetacean monitoring is essential in determining the status of a population. Different monitoring methods should reflect the real trends in abundance and patterns in distribution, and results should therefore ideally be independent of the selected method. Here, we compare two independent methods of describing harbour porpoise (Phocoena phocoena) rel...
Data
C-POD recording periods. Successful data acquisition of the 36 C-POD stations included in the study. Data coverage is variable due to loss of equipment, malfunctioning equipment or loss of battery power. Also, the day of deployment/retrievement of equipment was excluded from the analysis, to only include full days. (TIFF)
Poster
Full-text available
t is not generally possible to determine acoustically how far a vocalising cetacean is from from a single hydrophone, but landmark sequences do make this possible. These sequences occur in the click trains made by porpoises, and show a linear reduction over time in the interval between the clicks as the animal swims towards a target of interest to...
Conference Paper
SAMBAH (Static Acoustic Monitoring of the Baltic Sea Harbor Porpoise) is an EU LIFE + -funded project with the primary goal of estimating the abundance and distribution of the critically endangered Baltic Sea harbor porpoise. From May 2011 to April 2013, project members in all EU countries around the Baltic Sea undertook a static acoustic survey us...
Technical Report
Full-text available
A common constraint within marine spatial planning is a lack of documenta-tion on the distribution of marine habitats and key species. The aim of this project was to develop and evaluate the use of GIS-based methods to create maps on the distribution of fish in shallow offshore areas. Such maps are useful for assesseing the relative importance of d...
Technical Report
Full-text available
Knowledge about presence and distribution of marine species and habitats is requested by many sectors. During the 20th hundreds, the demand has risen with national and international priorities to protect the marine environment. For counties and municipalities, there is a great need for improved knowledge about the marine environment, for regional a...
Article
Indo-Pacific bottlenose (Tursiops aduncus) and humpback dolphins (Sousa chinensis) off the south coast of Zanzibar, East Africa, have been subject to both direct and indirect takes as well as disturbance from local dolphin tourism during the last decade. Meanwhile, little or no information on population parameters exists for these animals. In order...

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Cited By

Projects

Projects (4)
Archived project
Investigate the distribution, density and abundance of harbour porpoises in the Baltic Sea.
Project
Use the agent-based harbour porpoise model DEPONS to look at the effects of construction of windfarms and use of pingers in fisheries on the Baltic Proper harbour porpoise population.
Archived project
Extracting high-repetition rate clicks, so called feeding buzzes, from acoustic data collected during the SAMBAH project to investigate the spatial and temporal distribution of these events.