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Rehnstam-Holm, Ann-SofiORCID iD iconorcid.org/0000-0002-8059-0156
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Publications (10 of 48) Show all publications
Holm, I. & Rehnstam-Holm, A.-S. (2017). Samverkansinlärning: en modell för att öka genomströmningen i svåra kurser. Högskolepedagogisk debatt (1), 56-70
Open this publication in new window or tab >>Samverkansinlärning: en modell för att öka genomströmningen i svåra kurser
2017 (Swedish)In: Högskolepedagogisk debatt, ISSN 2000-9216, no 1, p. 56-70Article in journal (Other academic) Published
Place, publisher, year, edition, pages
Kristianstad: Kristianstad University Press, 2017
National Category
Pedagogy
Identifiers
urn:nbn:se:hkr:diva-16863 (URN)
Available from: 2017-06-12 Created: 2017-06-12 Last updated: 2017-06-12Bibliographically approved
Rehnstam-Holm, A.-S. (2016). Prorektors krönika: tankar kring breddad rekrytering och breddat deltagande. Högskolepedagogisk debatt (1), 6-9
Open this publication in new window or tab >>Prorektors krönika: tankar kring breddad rekrytering och breddat deltagande
2016 (Swedish)In: Högskolepedagogisk debatt, ISSN 2000-9216, no 1, p. 6-9Article in journal (Other (popular science, discussion, etc.)) Published
National Category
Pedagogy
Identifiers
urn:nbn:se:hkr:diva-15425 (URN)
Available from: 2016-04-28 Created: 2016-04-28 Last updated: 2016-04-28Bibliographically approved
Kaur-Kahlon, G., Kumar, S., Rehnstam-Holm, A.-S., Rai, A., Bhavya, P. S., Edler, L., . . . Godhe, A. (2016). Response of a coastal tropical pelagic microbial community to changed salinity and temperature. Aquatic Microbial Ecology, 77(1), 37-50
Open this publication in new window or tab >>Response of a coastal tropical pelagic microbial community to changed salinity and temperature
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2016 (English)In: Aquatic Microbial Ecology, ISSN 0948-3055, E-ISSN 1616-1564, Vol. 77, no 1, p. 37-50Article in journal (Refereed) Published
Abstract [en]

Studies on the responses of tropical microbial communities to changing hydrographic conditions are presently poorly represented. We present here the results from a mesocosm experiment conducted in southwest (SW) coastal India to investigate how changes in temperature and salinity may affect a coastal tropic microbial community. The onset of algal and bacterial blooms, the maximum production and biomass, and the interrelation between phytoplankton and bacteria were studied in replicated mesocosms. The treatments were set up featuring ambient conditions (28 °C, 35 PSU), hyposalinity (31 PSU), warming (31 °C) and a double manipulated treatment with warming and hyposalinity (31 °C, 31 PSU). The hyposaline treatment had the most considerable influence manifested as significantly lower primary production, and the most dissimilar microphytoplankton species community. The increased temperature acted as a catalyst in the double manipulated treatment and higher primary production was maintained. We investigated the dynamics of the microbial community with a structural equation model approach, and found a significant interrelation between phytoplankton biomass and bacterial abundance. Using this methodology, it became evident that temperature and salinity changes, individually and together, mediate direct and indirect effects that influence different compartments of the microbial loop. In the face of climate change, we suggest that in relatively nutrient replete tropical coastal zones, salinity and temperature changes will affect nutrient assimilation with subsequent significant effects on the quantity of microbial biomass and production.

Keyword
Phytoplankton, bacteria, climate change, temperature, salinity, structural equation modeling, tropical microbial community, heterotrophic seawater mesocosms, Arabian Sea, Vibrio-Parahaemolyticus; marine-phytoplankton, ocean acidification, bacteria, dynamics, monsoon, algae
National Category
Microbiology
Identifiers
urn:nbn:se:hkr:diva-15424 (URN)10.3354/ame01785 (DOI)000379249000004 ()
Funder
Sida - Swedish International Development Cooperation Agency, 2009-1949Swedish Research Council, 2009-6499
Available from: 2016-04-28 Created: 2016-04-28 Last updated: 2017-11-30Bibliographically approved
Rehnstam-Holm, A.-S. (2015). Verksamhetsförlagd utbildning: VFU – nu, då och i en framtid. Högskolepedagogisk debatt (2), 5-7
Open this publication in new window or tab >>Verksamhetsförlagd utbildning: VFU – nu, då och i en framtid
2015 (Swedish)In: Högskolepedagogisk debatt, ISSN 2000-9216, no 2, p. 5-7Article in journal (Other (popular science, discussion, etc.)) Published
Keyword
VFU
National Category
Pedagogy
Identifiers
urn:nbn:se:hkr:diva-15426 (URN)
Available from: 2016-04-28 Created: 2016-04-28 Last updated: 2016-04-28Bibliographically approved
Rehnstam-Holm, A.-S., Atnur, V. & Godhe, A. (2014). Defining the niche of Vibrio parahaemolyticus during pre- and post-monsoon seasons in the coastal Arabian Sea. Microbial Ecology, 67(1), 57-65
Open this publication in new window or tab >>Defining the niche of Vibrio parahaemolyticus during pre- and post-monsoon seasons in the coastal Arabian Sea
2014 (English)In: Microbial Ecology, ISSN 0095-3628, E-ISSN 1432-184X, Vol. 67, no 1, p. 57-65Article in journal (Refereed) Published
Abstract [en]

The bacteria Vibrio parahaemolyticus is an important component of coastal ecosystems worldwide, and in recent years, V. parahaemolyticus has caused several cases of food-borne gastroenteritis. However, research investigating which parameters are important in regulating V. parahaemolyticus abundance in tropical areas with relatively stable temperatures and salinity are largely lacking. The objective here was to investigate which environmental forces are driving elevated abundances of V. parahaemolyticus in a tropical oligotrophic coastal area in the Arabian Sea. We analysed a large number of environmental parameters in parallel with cell densities of V. parahaemolyticus and Vibrio spp. Abundance data was obtained using real-time PCR, during two different sampling periods, representative for two distinct seasons. Water temperature and salinity were stable during and between sampling periods, but V. parahaemolyticus abundances were on average six times higher during the first sampling period in December, compared to the second period in February–March. V. parahaemolyticus abundance was found to be positively correlated to inorganic phosphate concentration and copepod abundance. We thus hypothesise that these are important factors regulating V. parahaemolyticus abundance in coastal tropical areas during these periods.

National Category
Microbiology
Identifiers
urn:nbn:se:hkr:diva-11210 (URN)10.1007/s00248-013-0311-3 (DOI)000330982500006 ()24158690 (PubMedID)
Funder
Sida - Swedish International Development Cooperation Agency, SWE-2006-022Formas, 2007-17
Available from: 2013-10-29 Created: 2013-10-29 Last updated: 2017-12-06Bibliographically approved
Edfors, E., Freij, M., Ljung-Djärf, A., Umans, T. & Rehnstam-Holm, A.-S. (2014). Pedagogisk karriärstege vid Högskolan Kristianstad – några reflektioner från beredningsgruppens arbete. In: : . Paper presented at Lärarlärdom, 20 augusti 2014, Blekinge Tekniska Högskola.
Open this publication in new window or tab >>Pedagogisk karriärstege vid Högskolan Kristianstad – några reflektioner från beredningsgruppens arbete
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2014 (Swedish)Conference paper, Oral presentation only (Other academic)
National Category
Humanities
Identifiers
urn:nbn:se:hkr:diva-14807 (URN)
Conference
Lärarlärdom, 20 augusti 2014, Blekinge Tekniska Högskola
Available from: 2015-09-25 Created: 2015-09-25 Last updated: 2017-05-08Bibliographically approved
Collin, B., Rehnstam-Holm, A.-S., Ehn Börjesson, S.-M., Mussagy, A. & Hernroth, B. (2013). Characteristics of potentially pathogenic vibrios from subtropical Mozambique compared with isolates from tropical India and boreal Sweden. FEMS Microbiology Ecology, 83(2), 255-264
Open this publication in new window or tab >>Characteristics of potentially pathogenic vibrios from subtropical Mozambique compared with isolates from tropical India and boreal Sweden
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2013 (English)In: FEMS Microbiology Ecology, ISSN 0168-6496, E-ISSN 1574-6941, Vol. 83, no 2, p. 255-264Article in journal (Refereed) Published
Abstract [en]

Reported outbreaks of Vibrio parahaemolyticus have increased worldwide, particularly in regions of high seafood consumption. In Mozambique, seafood constitutes an important food resource and diarrheal diseases are common among its inhabitants. Edible clams were collected in Maputo Bay during both the dry and rainy seasons, with the results showing the number of viable counts of vibrios in clams to peak during the latter. Vibrio parahaemolyticus was the predominant species identified among the isolated strains. Although only one of 109 total strains carried the tdh virulence gene, 69% of isolates showed evidence of hemolytic capacity when subjected to a functional test. Similar virulence patterns and biochemical properties were found in strains isolated from Indian and Swedish marine waters. Antibiotic resistance was, however, more pronounced in strains isolated from these latter two environments.

Keyword
Vibrio spp, Vibrio parahaemolyticus, qPCR, probe hybridization, TCBS-agar, persistence in clams, PhenePlate system, antibiotic resistance, hemolysis
National Category
Microbiology
Identifiers
urn:nbn:se:hkr:diva-9610 (URN)10.1111/j.1574-6941.2012.01471.x (DOI)000313252600001 ()
Available from: 2012-08-22 Created: 2012-08-22 Last updated: 2017-12-07Bibliographically approved
Ehn Börjesson, S.-M., Kühn, I., Hernandez, J., Olsen, B. & Rehnstam-Holm, A.-S. (2013). Enterococcus spp in wastewater and in mallards (Anas platyrhynchos) exposed to wastewater wetland. International Journal of Environmental Protection, 3(10), 1-12
Open this publication in new window or tab >>Enterococcus spp in wastewater and in mallards (Anas platyrhynchos) exposed to wastewater wetland
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2013 (English)In: International Journal of Environmental Protection, ISSN 2226-6437, Vol. 3, no 10, p. 1-12Article in journal (Refereed) Published
Abstract [en]

In this study, twelve Mallards living in an artificial wastewater wetland were exposed to treated wastewater containing 1 x 103- 4 x 103 enterococci 100 ml-1 for a period of 55 days. Faecal samples were collected before, during and after exposure and analysed for Enterococcus spp. The isolates were phenotyped using the PhenePlateTM system. 270 Enterococcus spp. of Mallard origin were analysed, together with 116 Enterococcus spp. isolates from treated wastewater and from incoming raw wastewater. In general, the Mallard and wastewater enterococci isolates belonged to different phenotypes, although several sharing identical phenotypic profiles were found. One E. faecalis phenotype was found in Mallards before, during and after exposure to treated wastewater, as well as in raw and treated wastewater. Our results indicate that there is a common source of enterococci for Mallards and humans. We propose an increased focus on emissions of human bacteria and on systems that mediate their transfer to wild animals.

Keyword
Enterococcus Faecalis, Enterococcus Faecium, Anas Platyrhynchos, Mallard, Urban Wastewater, Sewage, Wastewater Wetland
National Category
Biological Sciences
Identifiers
urn:nbn:se:hkr:diva-11446 (URN)
Available from: 2013-12-16 Created: 2013-12-16 Last updated: 2014-06-24Bibliographically approved
Jönsson, K. I., Rehnstam-Holm, A.-S., Thelaus, M. & Dahlblom, P. (2013). Hur kvalitetssäkrar vi framtida examensarbeten inom naturvetenskap och biomedicin?. Högskolepedagogisk debatt (1), 16-26
Open this publication in new window or tab >>Hur kvalitetssäkrar vi framtida examensarbeten inom naturvetenskap och biomedicin?
2013 (Swedish)In: Högskolepedagogisk debatt, ISSN 2000-9216, no 1, p. 16-26Article in journal (Other academic) Published
National Category
Pedagogy
Identifiers
urn:nbn:se:hkr:diva-11646 (URN)
Available from: 2014-01-15 Created: 2014-01-15 Last updated: 2014-06-24Bibliographically approved
Olofsson, M., Asplund, M. E., Karunasagar, I., Rehnstam-Holm, A.-S. & Godhe, A. (2013). Prorocentrum micans promote and Skeletonema tropicum disfavours persistence of the pathogenic bacteria Vibrio parahaemolyticus. Indian Journal of Geo-Marine Sciences, 42(6), 729-733
Open this publication in new window or tab >>Prorocentrum micans promote and Skeletonema tropicum disfavours persistence of the pathogenic bacteria Vibrio parahaemolyticus
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2013 (English)In: Indian Journal of Geo-Marine Sciences, ISSN 0379-5136, Vol. 42, no 6, p. 729-733Article in journal (Refereed) Published
Abstract [en]

Vibrio parahaemolyticus is a common pathogen causing food poisoning with lethal results. Composition of phytoplankton communities could be a possible source affecting survival, persistence and proliferation of V. parahaemolyticus in marine environments. In this experiment an environmental strain of V. parahaemolyticus, isolated from the southwest coast of India, was exposed to one dinoflagellate, Prorocentrum micans and one diatom, Skeletonema tropicum. Results show that P. micans facilitate and S. tropicum prevents persistence of V. parahaemolyticus.

Keyword
Phytoplankton, Associated bacteria, Vibrio parahaemolyticus, Prorocentrum micans, Skeletonema trop
National Category
Biological Sciences
Identifiers
urn:nbn:se:hkr:diva-11443 (URN)000330207000007 ()
Funder
Sida - Swedish International Development Cooperation Agency, SWE-2006-022Swedish Research Council Formas, 2007-179
Available from: 2013-12-16 Created: 2013-12-16 Last updated: 2016-04-28Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-8059-0156

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