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Displaying Results 1 - 7 of 7 on page 1 of 1

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Ecophysiological performance of an urban strain of the aeroterrestrial green algaklebsormidiumsp. (klebsormidiales, klebsormidiophyceae) (2018)

Karsten, Ulf; Rindi, Fabio

Ecophysiological performance of an urban strain of the aeroterrestrial green algaklebsormidiumsp. (klebsormidiales, klebsormidiophyceae) (2018)

Karsten, Ulf; Rindi, Fabio

Abstract:

Aeroterrestrial green algae are among the most ubiquitous members of the microbial flora colonizing aerial surfaces. Filamentous green algae, in particular, produce large populations in several natural and artificial habitats. In recent years it has been shown that the bases of the walls of urban environments are frequently colonized by filamentous green algae. However, information concerning the physiology of these organisms and the factors that determine their distribution is extremely limited. We studied the physiological responses of a strain of Klebsormidium sp. (Klebsormidiales, Klebsormidiophyceae) collected in an urban area (Konstanz, Germany). Growth responses, photosynthetic performance, desiccation tolerance and accumulation of organic osmolytes were measured in several different combinations of environmental factors. Klebsormidium sp. exhibited optimal growth and highest photosynthetic efficiency under relatively low photon fluence rates, performing optimally between 15 ...

http://hdl.handle.net/10379/12157

Marked Mark

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- Final Summary Report. (2013)

Berrow, S.D.; O’Brien, J.; O’Connor, I.; McGrath, D.; Wall, D.

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- Final Summary Report. (2013)

Berrow, S.D.; O’Brien, J.; O’Connor, I.; McGrath, D.; Wall, D.

Abstract:

Irish waters are internationally important for cetaceans (whales, dolphins and porpoises), with 24 species recorded to date. These range from the harbour porpoise, the smallest species in European waters, to the blue whale, the largest animal to ever have lived on Earth. All cetaceans and their habitats are protected under Irish and international law. The research termed Marine Mammals and Megafauna in Irish Waters – behaviour, distribution and habitat use was delivered under six Work Packages. The deliverables under this project will provide data which could be used to address a wide range of issues, and will contribute to developing policy advice on meeting Ireland’s statutory obligations.

http://hdl.handle.net/10793/873

Marked Mark

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- WP 2: Developing Acoustic Monitoring Techniques (2013)

O’Brien, J.; Beck, S.; Wall, D.; Pierini, A.

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- WP 2: Developing Acoustic Monitoring Techniques (2013)

O’Brien, J.; Beck, S.; Wall, D.; Pierini, A.

Abstract:

All cetaceans and their habitats are protected under Irish and international law. The research termed Marine Mammals and Megafauna in Irish Waters – behaviour, distribution and habitat use was delivered under six Work Packages. Cetacean line transect surveys were conducted under Work Package 1 with the following goals: 1. Providing a baseline cetacean distribution and relative abundance data set for the Irish EEZ; 2. Filling spatial and temporal gaps identified in cetacean survey effort within the EEZ; 3. Preparing an Atlas of cetacean distribution and relative abundance for Irish waters; 4. Assessing the temporal use of marine habitats by cetaceans in Irish waters.

http://hdl.handle.net/10793/870

Marked Mark

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- WP1 Monitoring Spatial and Temporal Habitat Use and Abundance of Cetaceans. (2013)

Wall, D.

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- WP1 Monitoring Spatial and Temporal Habitat Use and Abundance of Cetaceans. (2013)

Wall, D.

Abstract:

http://hdl.handle.net/10793/869

Marked Mark

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- WP3 Biotelemetry of Marine Megafauna in Irish Waters (2013)

Berrow, S.D.; O’Connor, I.

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- WP3 Biotelemetry of Marine Megafauna in Irish Waters (2013)

Berrow, S.D.; O’Connor, I.

Abstract:

Biotelemetry is the transmission of information from biological organisms through the atmosphere by radio waves. It encompasses a wide range of devices that can record environmental variables while attached to an animal, such as depth, salinity and temperature, while permitting the recording and transmitting of the position of an animal, commonly referred to as tracking. A review of biotelemetry, with reference to relevant species in Ireland, is presented. Although a number of marine species have been tagged and tracked in Ireland, these studies were generally of short duration or involved small numbers of individuals. However, these studies have shown that tracking marine megafauna in Ireland can be successful and that there is great potential for biotelemetry.

http://hdl.handle.net/10793/871

Marked Mark

Marine Mammals and Megafauna in Irish Waters - Behaviour, Distribution and Habitat Use- WP4 Research into Ecosystem Links and Habitat Use between Cetaceans and Fisheries in the Celtic Sea (2013)

Healy, H.; Minto, C.; Wall, D.; O'Donnell, D.; O’Connor, I.

Abstract:

Visual line transect survey data for cetaceans were simultaneously collected during synoptic acoustic sampling surveys of small schooling pelagic fish, i.e. herring (Clupea harengus) and sprat (Sprattus sprattus) in the Celtic Sea, off the south coast of Ireland, from 2004 to 2009. These data were used to investigate the interactions of cetaceans with biological and environmental variables in the survey area. Geographic information systems and generalized linear and generalized additive models were used in this study.

http://hdl.handle.net/10793/872

Marked Mark

Using passive acoustic monitoring to investigate the occurrence of cetaceans in a protected marine area in northwest Ireland (2019)

Todd, Nicole R. E.; Cronin, Michelle; Luck, Cian; Bennison, Ashley; Jessopp, Mark; Kava...

Using passive acoustic monitoring to investigate the occurrence of cetaceans in a protected marine area in northwest Ireland (2019)

Todd, Nicole R. E.; Cronin, Michelle; Luck, Cian; Bennison, Ashley; Jessopp, Mark; Kavanagh, Ailbhe S.

Abstract:

Under the EU Habitats Directive, cetacean species must be maintained at favourable conservation status in European waters. Whether this is achieved via protected area designation, curtailment of activities such as fishing or construction, or time restrictions on noise, it is dependent on understanding the temporal patterns in occurrence. Our ability to study this is often limited by the relatively short time-series of data available to researchers. This study uses nine years of passive acoustic monitoring data paired with environmental covariates to better understand the spatio-temporal dynamics of harbour porpoise and dolphin species using generalised estimating equations-generalised linear models (GEE-GLMs). This long-term time-series included periods of increased disturbance due to construction of an underwater gas pipeline in the area, enabling us to investigate the effect of construction on species occurrence. Harbour porpoise and dolphins occurred in every season, with detecti...

http://hdl.handle.net/10468/9463

Displaying Results 1 - 7 of 7 on page 1 of 1