Peer-Reviewed Journal Details
Mandatory Fields
Maria McGuinness Hannah Brownlow Rob McAllen Luke Harman Damien Haberlin Thomas K. Doyle
Aquatic Ecology
Abundance and seasonality of phoronid larvae in coastal temperate waters: More abundant than previously thought?
Optional Fields
Phoronida Biodiversity Marine protected area Larval abundance Plankton sampling
In zooplankton surveys, many smaller taxa or species considered less important are often overlooked. One such example is the actinotrocha larvae of phoronid worms that are rarely quantifed in zooplankton samples yet may play important roles in marine food webs. To gain a better understanding of phoronid ecology in coastal waters, we retrospectively analysed 145 plankton samples collected from two coastal sites in Ireland (Lough Hyne and Bantry Bay). Samples were collected using plankton nets from depths of 20 and 40 m. Phoronids were present in 37.7% and 38.2% of samples, with mean abundances of 0.30.5 ind. m−3 and 1.22.8 ind. m−3, respectively, and were identifed as Phoronis muelleri and Phoronis hippocrepia. Phoronids were present consistently each year from April to October at Lough Hyne and from February to October at Bantry Bay. Comparisons with other taxa in Lough Hyne show that abundances are similar to those of fsh larvae (1.11.8 ind. m−3) and echinoderm larvae (2.34.4 ind. m−3). Examination of these samples from Irish waters suggests that phoronids are more abundant in temperate waters than previously reported.
Grant Details