Next Article in Journal
Spatial Variability of Soil Moisture in Newly Implemented Agricultural Bench Terraces in the Ethiopian Plateau
Next Article in Special Issue
Species Richness and Taxonomic Distinctness of Zooplankton in Ponds and Small Lakes from Albania and North Macedonia: The Role of Bioclimatic Factors
Previous Article in Journal
Optimization Difficulty Indicator and Testing Framework for Water Distribution Network Complexity
Previous Article in Special Issue
Cladoceran (Crustacea) Niches, Sex, and Sun Bathing—A Long-Term Record of Tundra Lake (Lapland) Functioning and Paleo-Optics
Open AccessArticle

Dynamics of Mesozooplankton Assemblage in Relation to Environmental Factors in the Maryland Coastal Bays

NSF CREST-Center for the Integrated Study of Coastal Ecosystem Processes and Dynamics in the Mid-Atlantic Region, and NOAA Living Marine Resources Cooperative Science Center, Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
*
Author to whom correspondence should be addressed.
Water 2019, 11(10), 2133; https://doi.org/10.3390/w11102133
Received: 16 August 2019 / Revised: 22 September 2019 / Accepted: 4 October 2019 / Published: 14 October 2019
The mesozooplankton composition and dynamics in coastal lagoons of Maryland, mid-Atlantic region, USA have received little scientific attention despite the fact that the lagoons have undergone changes in water quality in the past two decades. We compared mesozooplankton abundance and community structure among sites and seasons, and between 2012, a year of higher than average salinity (33.4), and 2013 with lower than average salinity (26.6). It was observed that the composition, diversity, and abundance of mesozooplankton in 2012 differed from those of 2013. Barnacle nauplii were abundant in 2012 contributing 31% of the non-copepod mesozooplankton abundance, whereas hydromedusae were more dominant in 2013 and contributed up to 83% of non-copepod zooplankton abundance. Gastropod veliger larvae were more abundant in 2013 than in 2012 while larvae of bivalves, polychaetes, and decapods, in addition to cladocerans and ostracods had higher abundances in 2012. The abundance and diversity of mesozooplankton were explained by variations in environmental factors particularly salinity, and by the abundance of predators such as bay anchovy (Anchoa mitchelli). Diversity was higher in spring and summer 2012 (dry year) than in 2013 (wet year). The reduction of salinity in fall 2012, due to high freshwater discharge associated with Hurricane Sandy, was accompanied by a decrease in mesozooplankton diversity. Spatially, diversity was higher at sites with high salinity near the Ocean City Inlet than at sites near the mouth of tributaries with lower salinity, higher nutrient levels and higher phytoplankton biomass. Perhaps, the relatively low salinity and high temperature in 2013 resulted in an increase in the abundance of hydromedusae, which through predation contributed to the reduction in the abundance of bivalve larvae and other taxa. View Full-Text
Keywords: Mesozooplankton; salinity; abundance; distribution; diversity; Maryland Coastal Bays Mesozooplankton; salinity; abundance; distribution; diversity; Maryland Coastal Bays
Show Figures

Figure 1

MDPI and ACS Style

Oghenekaro, E.U.; Chigbu, P. Dynamics of Mesozooplankton Assemblage in Relation to Environmental Factors in the Maryland Coastal Bays. Water 2019, 11, 2133. https://doi.org/10.3390/w11102133

AMA Style

Oghenekaro EU, Chigbu P. Dynamics of Mesozooplankton Assemblage in Relation to Environmental Factors in the Maryland Coastal Bays. Water. 2019; 11(10):2133. https://doi.org/10.3390/w11102133

Chicago/Turabian Style

Oghenekaro, Efeturi U.; Chigbu, Paulinus. 2019. "Dynamics of Mesozooplankton Assemblage in Relation to Environmental Factors in the Maryland Coastal Bays" Water 11, no. 10: 2133. https://doi.org/10.3390/w11102133

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop